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personalWork

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master
candy 2 years ago
parent 9b587932f5
commit ebded81d5b
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15
LinShopping/LinShopping/.gitignore vendored
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*.iml
.gradle
/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
.DS_Store
/build
/captures
.externalNativeBuild
.cxx
local.properties

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LinShopping/LinShopping/.idea/.gitignore vendored
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# Default ignored files
/shelf/
/workspace.xml

6
LinShopping/LinShopping/.idea/compiler.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<bytecodeTargetLevel target="11" />
</component>
</project>

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LinShopping/LinShopping/.idea/gradle.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GradleMigrationSettings" migrationVersion="1" />
<component name="GradleSettings">
<option name="linkedExternalProjectsSettings">
<GradleProjectSettings>
<option name="testRunner" value="GRADLE" />
<option name="distributionType" value="DEFAULT_WRAPPED" />
<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="gradleJvm" value="jbr-11" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
<option value="$PROJECT_DIR$/app" />
</set>
</option>
</GradleProjectSettings>
</option>
</component>
</project>

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LinShopping/LinShopping/.idea/misc.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DesignSurface">
<option name="filePathToZoomLevelMap">
<map>
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable-v24/ic_launcher_foreground.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/bottom_navigation_item_selector.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/ic_home_black_24dp.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/ic_launcher_background.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/ic_notifications_black_24dp.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/sharp_edit.xml" value="0.25729166666666664" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/sharp_edittext.xml" value="0.16770833333333332" />
<entry key="..\:/Android/LinShopping/app/src/main/res/drawable/text_view_tags.xml" value="0.13697916666666668" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/activity_main.xml" value="0.12083333333333333" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/bottom_navigation_item_selector.xml" value="0.2265625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/dialog_goods.xml" value="0.1" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/fragment_dashboard.xml" value="0.24114583333333334" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/fragment_goods.xml" value="0.1515625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/fragment_person.xml" value="0.1515625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/fragment_shopping.xml" value="0.1515625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/layout.xml" value="0.10625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/list_item_buying.xml" value="0.1192084942084942" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/list_item_goods.xml" value="0.25" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/list_item_history.xml" value="0.2259963768115942" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/list_item_shopping.xml" value="0.2259963768115942" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/login_layout.xml" value="0.15572916666666667" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/login_success_layout.xml" value="0.1703125" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/registered_layout.xml" value="0.15572916666666667" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/shopping_bottom.xml" value="0.20104754230459307" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/shpping_bottom.xml" value="0.2259963768115942" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/title.xml" value="0.2265625" />
<entry key="..\:/Android/LinShopping/app/src/main/res/layout/top_bar.xml" value="0.2" />
<entry key="..\:/Android/LinShopping/app/src/main/res/menu/bottom_nav_menu.xml" value="0.12083333333333333" />
</map>
</option>
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/build/classes" />
</component>
<component name="ProjectType">
<option name="id" value="Android" />
</component>
</project>

9
LinShopping/LinShopping/README.txt
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Android Studio版本 (Android Studio Arctic Fox 2020.3.1 Patch 3)
SDK版本(Android 7.0 API24 Revision 2)
Gradle版本(7.0.2)
Android Gradle Plugin版本(7.0.3)
RLShopping水果商城，android课程设计

1
LinShopping/LinShopping/app/.gitignore vendored
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/build

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LinShopping/LinShopping/app/build.gradle
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plugins {
id 'com.android.application'
}
android {
compileSdk 30
defaultConfig {
applicationId "com.ronglin.linshopping"
minSdk 24
targetSdk 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
buildFeatures {
viewBinding true
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1'
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
implementation 'androidx.navigation:navigation-fragment:2.3.5'
implementation 'androidx.navigation:navigation-ui:2.3.5'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

21
LinShopping/LinShopping/app/proguard-rules.pro vendored
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile

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LinShopping/LinShopping/app/release/app-release.apk
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LinShopping/LinShopping/app/release/output-metadata.json
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{
"version": 3,
"artifactType": {
"type": "APK",
"kind": "Directory"
},
"applicationId": "com.ronglin.linshopping",
"variantName": "release",
"elements": [
{
"type": "SINGLE",
"filters": [],
"attributes": [],
"versionCode": 1,
"versionName": "1.0",
"outputFile": "app-release.apk"
}
],
"elementType": "File"
}

26
LinShopping/LinShopping/app/src/androidTest/java/com/ronglin/linshopping/ExampleInstrumentedTest.java
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package com.ronglin.linshopping;
import android.content.Context;
import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;
/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
assertEquals("com.ronglin.linshopping", appContext.getPackageName());
}
}

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LinShopping/LinShopping/app/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ronglin.linshopping" >
<application
android:allowBackup="true"
android:icon="@drawable/photo"
android:label="@string/app_name"
android:roundIcon="@drawable/photo"
android:supportsRtl="true"
android:theme="@style/Theme.LinShopping" >
<activity
android:name=".RegisteredActivity"
android:exported="false" />
<activity
android:name=".MainActivity"
android:exported="true"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

7
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/AppCompatActivity.java
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package com.ronglin.linshopping;
import android.widget.RadioGroup;
public interface AppCompatActivity {
void onCheckedChanged(RadioGroup group, int checkedId);
}

55
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/GoodsDialog.java
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package com.ronglin.linshopping;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import androidx.annotation.NonNull;
import com.ronglin.linshopping.application.Goods;
import com.ronglin.linshopping.databinding.DialogGoodsBinding;
//弹框界面
public class GoodsDialog extends Dialog implements View.OnClickListener {
private Goods goods;
private Context context;
private DialogGoodsBinding binding;
public GoodsDialog(@NonNull Context context, Goods goods) {
super(context);
this.goods = goods;
this.context = context;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DialogGoodsBinding.inflate(LayoutInflater.from(context));
setContentView(binding.getRoot());
// binding.imageViewPreviewDialog
if (goods.getBitmaps().size() > 0){
binding.imageViewPreviewDialog.setImageBitmap(goods.getBitmaps().get(0));
}
binding.getRoot().setOnClickListener(this);
binding.textViewGoodsDescribeDialog.setText(goods.getDescribe());
binding.textViewGoodsNameDialog.setText(goods.getGoodsName());
binding.textViewGoodsTagsDialog.setText(goods.getTags().toString());
binding.textViewGoodsPriceDialog.setText(Goods.toPriceString(goods.getPrice()));
}
//随便点击隐藏卡片
@Override
public void onClick(View view) {
hide();
}
}

49
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/MainActivity.java
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package com.ronglin.linshopping;
import android.os.Bundle;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
import com.ronglin.linshopping.databinding.ActivityMainBinding;
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding binding;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar=getSupportActionBar();
if (actionBar != null) {
actionBar.hide();
}
binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
BottomNavigationView navView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_goods, R.id.navigation_shopping, R.id.navigation_person)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main);
NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
NavigationUI.setupWithNavController(binding.navView, navController);
}
}

30
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/OtherActivity.java
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package com.ronglin.linshopping;
import android.app.Activity;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import com.ronglin.linshopping.R;
public class OtherActivity extends AppCompatActivity implements View.OnClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.other_activity_layout);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.look:
Intent intent = new Intent(OtherActivity.this, MainActivity.class);
startActivity(intent);
break;
}
}
}

76
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/RegisteredActivity.java
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package com.ronglin.linshopping;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import com.ronglin.linshopping.application.Database;
import com.ronglin.linshopping.application.MySQLiteHelper;
import com.ronglin.linshopping.application.Person;
import com.ronglin.linshopping.databinding.RegisteredLayoutBinding;
public class RegisteredActivity extends AppCompatActivity{
private RegisteredLayoutBinding registeredLayoutBinding;
public static int RESULTCODE_NEWPERSON = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
registeredLayoutBinding = RegisteredLayoutBinding.inflate(getLayoutInflater());
setContentView(registeredLayoutBinding.getRoot());
registeredLayoutBinding.buttonCancelR.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
RegisteredActivity.this.finish();
}
});
registeredLayoutBinding.buttonRegistered.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String userName = registeredLayoutBinding.editTextUsernameR.getText().toString().trim();
String password = registeredLayoutBinding.editTextPasswordR.getText().toString().trim();
String password2 = registeredLayoutBinding.editTextPasswordR2.getText().toString().trim();
if (!password.equals(password2)) {
Toast.makeText(RegisteredActivity.this, "两次密码输入不一致!", Toast.LENGTH_SHORT).show();
return;
}
Database database = new Database(new MySQLiteHelper(RegisteredActivity.this));
Person person = database.findPersonFromSQLite(null, userName, password);
if (person != null) {
Toast.makeText(RegisteredActivity.this, "该账号已经注册过了!", Toast.LENGTH_SHORT).show();
return;
} else {
userName = registeredLayoutBinding.editTextUsernameR.getText().toString().trim();
password = registeredLayoutBinding.editTextPasswordR.getText().toString().trim();
person = new Person(userName, password);
person.setNum(database.getPersonMaxNumFromSQLite() + 1);
person.setId(String.valueOf(person.getNum()));
person.setMoney(0);
database.insertPersonToSQLite(person);
Toast.makeText(RegisteredActivity.this, "注册成功!", Toast.LENGTH_SHORT).show();
Intent intentRegisterSuccess = new Intent();
intentRegisterSuccess.putExtra("newPerson", person);
setResult(RESULTCODE_NEWPERSON, intentRegisterSuccess);
finish();
}
}
});
}}

73
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/BuyingListAdapter.java
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package com.ronglin.linshopping.application;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.ronglin.linshopping.GoodsDialog;
import com.ronglin.linshopping.R;
import java.util.ArrayList;
public class BuyingListAdapter extends BaseAdapter {
private ArrayList<Goods> list_goods ;
private final Context context;
public BuyingListAdapter(ArrayList<Goods> list,Context context){
this.list_goods = list;
this.context = context;
}
public void setListGoods(ArrayList<Goods> list){
this.list_goods = list;
}
@Override
public int getCount() {
return list_goods.size();
}
@Override
public Object getItem(int i) {
return list_goods.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@SuppressLint("ViewHolder")
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
@SuppressLint("ViewHolder") View item_view;
item_view = View.inflate(this.context, R.layout.list_item_buying,null);
ImageView imageViewPreviewBuying = item_view.findViewById(R.id.imageViewPreviewBuying);
TextView textViewGoodsNameBuying = item_view.findViewById(R.id.textViewGoodsNameBuying);
TextView textViewGoodsPriceBuying = item_view.findViewById(R.id.textViewGoodsPriceBuying);
//设置监听器
item_view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
dialog.show();
}
});
String t="-"+Goods.toPriceString(list_goods.get(i).getPrice());
textViewGoodsPriceBuying.setText(t);
textViewGoodsNameBuying.setText(list_goods.get(i).getGoodsName());
if (list_goods.get(i).getBitmaps().size() > 0){
imageViewPreviewBuying.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
}
return item_view;
}
}

183
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/Database.java
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package com.ronglin.linshopping.application;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
import java.util.ArrayList;
public class Database {
private MySQLiteHelper mySQLiteHelper;
private SQLiteDatabase database;
public Database(MySQLiteHelper mySQLiteHelper){
this.mySQLiteHelper = mySQLiteHelper;
}
public void insertPersonToSQLite(Person person){
database = mySQLiteHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("id",person.getId());
values.put("num",person.getNum());
values.put("username",person.getUsername());
values.put("password",person.getPassword());
values.put("money",person.getMoney());
long id = database.insert("person",null,values);
database.close();
}
public int getPersonMaxNumFromSQLite(){
database = mySQLiteHelper.getWritableDatabase();
int result;
Cursor cursor = database.rawQuery("SELECT MAX(num) FROM person",null);
if(cursor.getCount() ==0){
return 0;
} else {
cursor.moveToFirst();
result = cursor.getInt(0);
}
return result;
}
public int updatePersonToSQLite(Person person){
database = mySQLiteHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("num",person.getNum());
values.put("username",person.getUsername());
values.put("password",person.getPassword());
values.put("money",person.getMoney());
int number = database.update("person",values,"id=?",new String[]{person.getId()});
database.close();
return number;
}
public int deletePersonToSQLite(Person person){
database = mySQLiteHelper.getWritableDatabase();
int number = database.delete("person","id =?",new String[]{person.getId()});
database.close();
return number;
}
public Person findPersonFromSQLite(String id,String username,String password){
database = mySQLiteHelper.getReadableDatabase();
Person person = new Person(username,null);
Cursor cursor ;
if(id != null && (!id.isEmpty())){
cursor = database.query("person",null,"id=?",new String[]{id},null,null,null);
if (cursor.getCount() ==0){
database.close();
return null;
}
cursor.moveToFirst();
person.setId(cursor.getString(0));
person.setNum(cursor.getInt(1));
person.setUsername(cursor.getString(2));
person.setPassword(cursor.getString(3));
person.setMoney(cursor.getInt(4));
cursor.close();
database.close();
return person;
} else if(username != null && (!username.isEmpty())){
cursor = database.query("person",null,"username=?",new String[]{username},null,null,null);
if (cursor.getCount() ==0){
database.close();
return null;
} else if(cursor.getCount() ==1){
cursor.moveToFirst();
if (password != null){
if (password.equals(cursor.getString(3))){ //如果密码相等
person.setId(cursor.getString(0));
person.setNum(cursor.getInt(1));
person.setUsername(cursor.getString(2));
person.setPassword(cursor.getString(3));
person.setMoney(cursor.getInt(4));
} else { //如果密码不相等
person = null;
}
} else {
person.setId(cursor.getString(0));
person.setNum(cursor.getInt(1));
person.setUsername(cursor.getString(2));
person.setPassword(cursor.getString(3));
person.setMoney(cursor.getInt(4));
}
cursor.close();
database.close();
return person;
} else {
cursor.moveToFirst();
if (cursor.getString(3).equals(password)){
person.setId(cursor.getString(0));
person.setNum(cursor.getInt(1));
person.setUsername(cursor.getString(2));
person.setPassword(cursor.getString(3));
person.setMoney(cursor.getInt(4));
} else {
boolean isExist = false;
while(cursor.moveToNext()){
if (cursor.getString(3).equals(password)){
cursor.moveToFirst();
person.setId(cursor.getString(0));
person.setNum(cursor.getInt(1));
person.setUsername(cursor.getString(2));
person.setPassword(cursor.getString(3));
person.setMoney(cursor.getInt(4));
isExist = true;
break;
}
}
if(!isExist) {
person = null;
}
}
cursor.close();
database.close();
return person;
}
}else {
database.close();
return null;
}
}
public void insertGoodsToSQLite(Person person,Goods goods,long time){
database = mySQLiteHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("id",person.getId());
values.put("goodsName",goods.getGoodsName());
values.put("time",time);
long id = database.insert("shopping",null,values);
database.close();
}
public int deleteGoodsToSQLite(Person person,Goods goods){
database = mySQLiteHelper.getWritableDatabase();
int number = database.delete("shopping","id =? and goodsName =?",new String[]{person.getId(),goods.getGoodsName()});
database.close();
return number;
}
public ArrayList<String> findGoodsListFromSQLite(Person person){
database = mySQLiteHelper.getReadableDatabase();
ArrayList<String> list = new ArrayList<>();
Cursor cursor = database.query("shopping",null,"id=?",new String[]{person.getId()},null,null,null);
if (cursor.getCount() == 0){
cursor.close();
database.close();
return list;
} else {
cursor.moveToFirst();
list.add(new String(cursor.getString(1)));
while (cursor.moveToNext()){
list.add(new String(cursor.getString(1)));
}
cursor.close();
database.close();
return list;
}
}
}

139
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/Goods.java
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package com.ronglin.linshopping.application;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import com.ronglin.linshopping.R;
import java.util.ArrayList;
import java.util.Arrays;
public class Goods {
private ArrayList<Bitmap> bitmaps;
private String goodsName;
private String describe;
private ArrayList<String> tags;
private int price;
public static ArrayList<Goods> GOODSLIST =new ArrayList<>();
public static Goods DEULT_GOODS = new Goods();
public Goods(){
this.bitmaps = new ArrayList<>();
this.goodsName = "";
this.describe = "";
this.tags = new ArrayList<>();
this.price = -1;
}
public Goods(String goodsName, String describe, String[] tags, int price){
this();
this.goodsName = goodsName;
this.describe = describe;
this.price = price;
this.tags.addAll(Arrays.asList(tags));
}
public ArrayList<Bitmap> getBitmaps() {
return bitmaps;
}
public void setBitmaps(ArrayList<Bitmap> bitmaps) {
this.bitmaps = bitmaps;
}
public String getGoodsName() {
return goodsName;
}
public void setGoodsName(String goodsName) {
this.goodsName = goodsName;
}
public String getDescribe() {
return describe;
}
public void setDescribe(String describe) {
this.describe = describe;
}
public ArrayList<String> getTags() {
return tags;
}
public void setTags(ArrayList<String> tags) {
this.tags = tags;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public boolean equals(Goods goods){
return this.getGoodsName().equals(goods.getGoodsName())
&& this.getTags().equals(goods.getTags())
&& this.getDescribe().equals(goods.getDescribe())
&& this.getPrice() == goods.getPrice();
}
public static String toPriceString(int price){
StringBuffer sb = new StringBuffer(String.valueOf(price));
//小于2位数
if (sb.length()<=2)
{
if (sb.length() == 0){
sb.insert(0,"0.00");
} else if(sb.length() == 1){
sb.insert(0,"0.0");
} else if(sb.length() == 2){
sb.insert(0,"0.");
}
} else {
sb.insert(sb.length()-2,'.');
}
return sb.toString();
}
public static void getDefaultGoodsList(Context context){
GOODSLIST.clear();
Goods goods1 = new Goods("南方大橘子","美味多汁，清凉解渴",new String[]{"水果","南方橘子","大橘子"},5000);
goods1.setDescribe("美味多汁，清凉解渴，美味多汁，清凉解渴，美味多汁，清凉解渴，美味多汁，清凉解渴，美味多汁，清凉解渴");
Goods goods2 = new Goods("北方丑橘","长相出众，深得人心",new String[]{"丑陋","丑橘子"},1500);
goods2.setDescribe("长相出众，深得人心，长相出众，深得人心，长相出众，深得人心，长相出众，深得人心，长相出众，深得人心");
Goods goods3 = new Goods("东方少水橘","干涩难吃，买给朋友",new String[]{"少水"},1500);
goods3.setDescribe("干涩难吃，买给朋友，干涩难吃，买给朋友，干涩难吃，买给朋友，干涩难吃，买给朋友，干涩难吃，买给朋友");
Goods goods4 = new Goods("西方升天橘","下了泻药，便秘必备",new String[]{"有毒"},100);
goods4.setDescribe("下了泻药，便秘必备，下了泻药，便秘必备，下了泻药，便秘必备，下了泻药，便秘必备，下了泻药，便秘必备");
ArrayList<Bitmap> bitmaps1 = new ArrayList<>();
bitmaps1.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.orange1));
goods1.setBitmaps(bitmaps1);
ArrayList<Bitmap> bitmaps2 = new ArrayList<>();
bitmaps2.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.orange));
goods2.setBitmaps(bitmaps2);
ArrayList<Bitmap> bitmaps3 = new ArrayList<>();
bitmaps3.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.orange3));
goods3.setBitmaps(bitmaps3);
ArrayList<Bitmap> bitmaps4 = new ArrayList<>();
bitmaps4.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.orange4));
goods4.setBitmaps(bitmaps4);
GOODSLIST.add(goods1);
GOODSLIST.add(goods2);
GOODSLIST.add(goods3);
GOODSLIST.add(goods4);
}
}

151
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/GoodsListAdapter.java
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package com.ronglin.linshopping.application;
import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.ronglin.linshopping.GoodsDialog;
import com.ronglin.linshopping.R;
import com.ronglin.linshopping.ui.person.PersonFragment;
import com.ronglin.linshopping.ui.shopping.ShoppingFragment;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;
public class GoodsListAdapter extends BaseAdapter{
private ArrayList<Goods> list_goods;
private final Context context;
private boolean delay = false;
// private final ListItemGoodsBinding listItemGoodsBinding;
public GoodsListAdapter(ArrayList<Goods> list, Context context){
this.list_goods = list;
this.context = context;
// listItemGoodsBinding =ListItemGoodsBinding.inflate(LayoutInflater.from(context));
}
public void setListGoods(ArrayList<Goods> list){
this.list_goods = list;
}
@Override
public int getCount() {
return list_goods.size();
}
@Override
public Object getItem(int i) {
return list_goods.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@SuppressLint("ViewHolder")
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
@SuppressLint("ViewHolder") View item_view;
item_view = View.inflate(this.context, R.layout.list_item_goods,null);
// View item_view = listItemGoodsBinding.getRoot();
//设置列表的显示形式
ImageView imageViewPreview = item_view.findViewById(R.id.imageViewPreview);
TextView textViewGoodsName = item_view.findViewById(R.id.textViewGoodsName);
TextView textViewGoodsTags = item_view.findViewById(R.id.textViewGoodsTags);
TextView textViewPrice = item_view.findViewById(R.id.textViewPrice);
ImageButton imageButtonAdd = item_view.findViewById(R.id.imageButtonAdd);
imageViewPreview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
dialog.show();
}
});
textViewGoodsName.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
dialog.show();
}
});
textViewGoodsTags.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
dialog.show();
}
});
textViewPrice.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
dialog.show();
}
});
if (list_goods.get(i).getBitmaps().size() > 0){
imageViewPreview.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
}
textViewGoodsName.setText(list_goods.get(i).getGoodsName());
textViewGoodsTags.setText(list_goods.get(i).getTags().toString());
textViewPrice.setText(Goods.toPriceString(list_goods.get(i).getPrice()));
imageButtonAdd.setOnClickListener(new View.OnClickListener() {
@SuppressLint("UseCompatLoadingForDrawables")
@Override
public void onClick(View view) {
if(!PersonFragment.ISLOGIN){
Toast.makeText(context,"请先登录",Toast.LENGTH_SHORT).show();
}else{
if (!delay){
ShoppingFragment.shoppingList.add(Goods.GOODSLIST.get(i));
Toast.makeText(context,"添加成功",Toast.LENGTH_SHORT).show();
delay = true;
imageButtonAdd.setImageResource(R.drawable.ok);
@SuppressLint("HandlerLeak") Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
delay=false;
imageButtonAdd.setImageResource(R.drawable.shopping_add);
}
};
TimerTask task = new TimerTask(){
public void run() {
Message message = new Message();
mHandler.sendMessage(message);
}
};
Timer timer = new Timer();
timer.schedule(task, 1000);
}
}
}
});
return item_view;
}
}

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LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/MySQLiteHelper.java
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package com.ronglin.linshopping.application;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import androidx.annotation.Nullable;
public class MySQLiteHelper extends SQLiteOpenHelper {
public MySQLiteHelper(@Nullable Context context) {
super(context,"LinShopping.db", null, 1);
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
sqLiteDatabase.execSQL("create table person(id varchar(10) primary key,num integer,username varchar(30),password varchar(30),money integer)");
sqLiteDatabase.execSQL("create table shopping(id varchar(10),goodsName varchar(30),time bigint)");
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
}
}

66
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/Person.java
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package com.ronglin.linshopping.application;
import java.io.Serializable;
public class Person implements Serializable {
private String id;
private int num;
private String username;
private String password;
private int money = 0;
public Person(String name, String password) {
this.username = name;
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public void setNum(int num) {
this.num = num;
}
public int getNum() {
return num;
}
public int getMoney() {
return money;
}
public void setMoney(int money) {
this.money = money;
}
public String toString() {
String t;
t = "{id:%s,num:%s,username:%s,password:%s,money:%s}";
t = String.format(t, this.id, this.num, this.username, this.password, this.money);
return t;
}
}

133
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/application/ShoppingListAdapter.java
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package com.ronglin.linshopping.application;
import android.annotation.SuppressLint;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import com.ronglin.linshopping.GoodsDialog;
import com.ronglin.linshopping.R;
import com.ronglin.linshopping.databinding.FragmentShoppingBinding;
import com.ronglin.linshopping.databinding.ListItemGoodsBinding;
import com.ronglin.linshopping.databinding.ListItemShoppingBinding;
import java.util.ArrayList;
public class ShoppingListAdapter extends BaseAdapter {
private ArrayList<Goods> list_goods ;
private static ArrayList<Integer> list_select = new ArrayList<>();
private int allPrice = 0;
private final Context context;
private FragmentShoppingBinding binding;
public ShoppingListAdapter(ArrayList<Goods> list, Context context, FragmentShoppingBinding binding){
this.list_goods = list;
this.context = context;
this.binding = binding;
}
public void setListGoods(ArrayList<Goods> list){
this.list_goods = list;
}
public void setSelectList(ArrayList<Integer> list){
this.list_select = list;
}
public ArrayList<Integer> getSelectList(){
return this.list_select;
}
@Override
public int getCount() {
return list_goods.size();
}
@Override
public Object getItem(int i) {
return list_goods.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@SuppressLint("ViewHolder")
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
@SuppressLint("ViewHolder") View item_view;
item_view = View.inflate(this.context, R.layout.list_item_shopping,null);
CheckBox checkBoxSelect = item_view.findViewById(R.id.checkBoxSelect);
ImageView imageViewPreviewShopping = item_view.findViewById(R.id.imageViewPreviewShopping);
TextView textViewGoodsNameShopping = item_view.findViewById(R.id.textViewGoodsNameShopping);
TextView textViewGoodsPriceShopping = item_view.findViewById(R.id.textViewGoodsPriceShopping);
if (list_select.contains(i)){
checkBoxSelect.setChecked(true);
}
checkBoxSelect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (checkBoxSelect.isChecked()){
list_select.add(i);
} else {
list_select.remove(Integer.valueOf(i));
}
allPrice = 0;
for (int i=0;i<list_goods.size();i++){
if (list_select.contains(i)){
allPrice+=list_goods.get(i).getPrice();
}
}
binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
}
});
if (list_goods.get(i).getBitmaps().size() > 0){
imageViewPreviewShopping.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
}
imageViewPreviewShopping.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
dialog.show();
}
});
textViewGoodsNameShopping.setText(list_goods.get(i).getGoodsName());
textViewGoodsNameShopping.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
dialog.show();
}
});
textViewGoodsPriceShopping.setText(Goods.toPriceString(list_goods.get(i).getPrice()));
textViewGoodsPriceShopping.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
dialog.show();
}
});
return item_view;
}
}

139
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/goods/GoodsFragment.java
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package com.ronglin.linshopping.ui.goods;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.navigation.Navigation;
import com.ronglin.linshopping.R;
import com.ronglin.linshopping.application.Goods;
import com.ronglin.linshopping.application.GoodsListAdapter;
import com.ronglin.linshopping.databinding.FragmentGoodsBinding;
import java.util.ArrayList;
public class GoodsFragment extends Fragment {
private GoodsViewModel goodsViewModel;
private FragmentGoodsBinding binding;
private ArrayList<Goods> list;
private ArrayList<Goods> resultList;
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
goodsViewModel =
new ViewModelProvider(this).get(GoodsViewModel.class);
binding = FragmentGoodsBinding.inflate(inflater, container, false);
View root = binding.getRoot();
list = new ArrayList<>();
resultList = new ArrayList<>();
initListView();
initGoodsFragment();
return root;
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
private void initGoodsFragment(){
binding.topBar.imageButtonPhoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Navigation.findNavController(GoodsFragment.this.getView()).navigate(R.id.navigation_person);
}
});
binding.topBar.imageButtonShopping.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Navigation.findNavController(GoodsFragment.this.getView()).navigate(R.id.navigation_shopping);
}
});
binding.topBar.editTextSearch.addTextChangedListener(new TextWatcher() {
/*
beforeTextChanged(CharSequence s, int start, int count, int after)
s: 修改之前的文字。
start: 字符串中即将发生修改的位置。
count: 字符串中即将被修改的文字的长度。如果是新增的话则为0。
after: 被修改的文字修改之后的长度。如果是删除的话则为0。
onTextChanged(CharSequence s, int start, int before, int count)
s: 改变后的字符串
start: 有变动的字符串的序号
before: 被改变的字符串长度，如果是新增则为0。
count: 添加的字符串长度，如果是删除则为0。
afterTextChanged(Editable s)
s: 修改后的文字
*/
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String search = s.toString().trim();
if(search.isEmpty()){
goodsViewModel.setListGoods(list);
} else {
resultList.clear();
for (Goods t:list) {
if(t.getGoodsName().contains(search)){
resultList.add(t);
} else if (t.getTags().toString().contains(search)){
resultList.add(t);
} else if (t.getDescribe().contains(search)){
resultList.add(t);
}
}
goodsViewModel.setListGoods(resultList);
}
}
@Override
public void afterTextChanged(Editable editable) {
}
});
}
private void initListView(){
if (Goods.GOODSLIST.size() == 0){
Goods.getDefaultGoodsList(getContext());
}
list = new ArrayList<>(Goods.GOODSLIST);
goodsViewModel.setListGoods(list);
GoodsListAdapter goodsListAdapter = new GoodsListAdapter(list,this.getContext());
binding.listViewGoods.setAdapter(goodsListAdapter);
goodsViewModel.getListGoods().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>() {
@Override
public void onChanged(ArrayList<Goods> list) {
goodsListAdapter.setListGoods(list);
binding.listViewGoods.setAdapter(goodsListAdapter);
}
});
}
}

26
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/goods/GoodsViewModel.java
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package com.ronglin.linshopping.ui.goods;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
import com.ronglin.linshopping.application.Goods;
import java.util.ArrayList;
public class GoodsViewModel extends ViewModel {
private final MutableLiveData<ArrayList<Goods>> list_goods;
public GoodsViewModel() {
list_goods = new MutableLiveData<>();
}
public LiveData<ArrayList<Goods>> getListGoods() {
return list_goods;
}
public void setListGoods(ArrayList<Goods> list){
this.list_goods.setValue(list);
}
}

277
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/person/PersonFragment.java
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package com.ronglin.linshopping.ui.person;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import com.ronglin.linshopping.RegisteredActivity;
import com.ronglin.linshopping.application.BuyingListAdapter;
import com.ronglin.linshopping.application.Database;
import com.ronglin.linshopping.application.Goods;
import com.ronglin.linshopping.application.MySQLiteHelper;
import com.ronglin.linshopping.application.Person;
import com.ronglin.linshopping.databinding.FragmentPersonBinding;
import java.util.ArrayList;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class PersonFragment extends Fragment{
private PersonViewModel personViewModel;
private FragmentPersonBinding binding;
public static boolean ISLOGIN = false;
public static int REQUESTCODE_NEWPERSON = 1;
public static Person person;
private ArrayList<Goods> goodsArrayList = new ArrayList<>();
private BuyingListAdapter buyingListAdapter;
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
personViewModel =
new ViewModelProvider(this).get(PersonViewModel.class);
binding = FragmentPersonBinding.inflate(inflater, container, false);
View root = binding.getRoot();
if (!ISLOGIN){
binding.linearLayoutLogin.setVisibility(View.VISIBLE);
binding.linearLayoutLoginSuccess.setVisibility(View.GONE);
} else
{
binding.linearLayoutLogin.setVisibility(View.GONE);
binding.linearLayoutLoginSuccess.setVisibility(View.VISIBLE);
goodsArrayList.clear();
Database database = new Database(new MySQLiteHelper(getContext()));
ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
for (String t:goodsNameList
) {
for (Goods goods:Goods.GOODSLIST
) {
if (t.equals(goods.getGoodsName())){
goodsArrayList.add(goods);
}
}
}
}
personViewModel.getPerson().observe(getViewLifecycleOwner(), new Observer<Person>() {
@Override
public void onChanged(@Nullable Person person) {
if (person != null){
PersonFragment.person = person;
binding.includeLogin.editTextUsername.setText(person.getUsername());
binding.includeLogin.editTextPassword.setText(person.getPassword());
binding.includeLoginSuccess.textViewPersonName.setText(person.getUsername());
Database database = new Database(new MySQLiteHelper(getContext()));
ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
ArrayList<Goods> goodsArrayList = new ArrayList<>();
for (String t:goodsNameList
) {
for (Goods goods:Goods.GOODSLIST
) {
if (t.equals(goods.getGoodsName())){
goodsArrayList.add(goods);
}
}
}
personViewModel.setBuyingList(goodsArrayList);
}
}
});
personViewModel.setBuyingList(goodsArrayList);
buyingListAdapter = new BuyingListAdapter(goodsArrayList,getContext());
binding.includeLoginSuccess.buyingListView.setAdapter(buyingListAdapter);
personViewModel.getBuyingList().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>(){
@Override
public void onChanged(ArrayList<Goods> list) {
buyingListAdapter.setListGoods(list);
binding.includeLoginSuccess.buyingListView.setAdapter(buyingListAdapter);
}
});
initLayoutLogin();
initLayoutLoginSuccess();
return root;
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
// String result = (personViewModel.getPerson().getValue() == null)?"null":personViewModel.getPerson().getValue().toString();
// Log.i("TAG", "onDestroyView: "+result);
}
public void initLayoutLogin(){
if (personViewModel.getPerson().getValue() != null){
binding.includeLogin.editTextUsername.setText(personViewModel.getPerson().getValue().getUsername());
}
binding.includeLogin.buttonRegistered.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intentStartRegistered = new Intent(getActivity(), RegisteredActivity.class);
startActivityForResult(intentStartRegistered,REQUESTCODE_NEWPERSON);
}
});
binding.includeLogin.buttonLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String userName = binding.includeLogin.editTextUsername.getText().toString().trim();
String password = binding.includeLogin.editTextPassword.getText().toString().trim();
if (userName.isEmpty()){
Toast.makeText(getContext(), "请输入用户名", Toast.LENGTH_SHORT).show();
return;
}
if (password.isEmpty()){
Toast.makeText(getContext(), "请输入密码", Toast.LENGTH_SHORT).show();
return;
}
Database database = new Database(new MySQLiteHelper(getContext()));
Person person = database.findPersonFromSQLite(null,userName,password);
if (person == null){
Toast.makeText(getContext(), "用户名或密码错误，请核对后重新输入", Toast.LENGTH_SHORT).show();
return;
} else {
personViewModel.setPerson(person);
binding.includeLoginSuccess.textViewPersonName.setText(personViewModel.getPerson().getValue().getUsername());
StringBuffer sb = new StringBuffer(String.valueOf(personViewModel.getPerson().getValue().getMoney()));
//小于2位数
if (sb.length()<=2)
{
if (sb.length() == 0){
sb.insert(0,"0.00");
} else if(sb.length() == 1){
sb.insert(0,"0.0");
} else if(sb.length() == 2){
sb.insert(0,"0.");
}
} else {
sb.insert(sb.length()-2,'.');
}
binding.includeLoginSuccess.textViewPersonMoney.setText(sb.toString());
ISLOGIN = true;
binding.linearLayoutLogin.setVisibility(View.GONE);
binding.linearLayoutLoginSuccess.setVisibility(View.VISIBLE);
goodsArrayList.clear();
ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
for (String t:goodsNameList
) {
for (Goods goods:Goods.GOODSLIST
) {
if (t.equals(goods.getGoodsName())){
goodsArrayList.add(goods);
}
}
}
personViewModel.setBuyingList(goodsArrayList);
Log.i("TAG", "onClick: "+person.toString());
}
}
});
}
public void initLayoutLoginSuccess(){
if (personViewModel.getPerson().getValue() != null){
binding.includeLoginSuccess.textViewPersonName.setText(personViewModel.getPerson().getValue().getUsername());
StringBuffer sb = new StringBuffer(String.valueOf(personViewModel.getPerson().getValue().getMoney()));
//小于2位数
if (sb.length()<=2)
{
if (sb.length() == 0){
sb.insert(0,"0.00");
} else if(sb.length() == 1){
sb.insert(0,"0.0");
} else if(sb.length() == 2){
sb.insert(0,"0.");
}
} else {
sb.insert(sb.length()-2,'.');
}
binding.includeLoginSuccess.textViewPersonMoney.setText(sb.toString());
}
binding.includeLoginSuccess.buttonEsc.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
binding.linearLayoutLoginSuccess.setVisibility(View.GONE);
binding.linearLayoutLogin.setVisibility(View.VISIBLE);
if (personViewModel.getPerson().getValue()!= null){
binding.includeLogin.editTextUsername.setText(personViewModel.getPerson().getValue().getUsername());
binding.includeLogin.editTextPassword.setText(personViewModel.getPerson().getValue().getPassword());
}
ISLOGIN = false;
}
});
binding.includeLoginSuccess.buttonCharge.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getContext(),"充值成功",Toast.LENGTH_SHORT).show();
Person person = personViewModel.getPerson().getValue();
person.setMoney(person.getMoney()+10000);
Database database = new Database(new MySQLiteHelper(getContext()));
database.updatePersonToSQLite(person);
personViewModel.setPerson(person);
binding.includeLoginSuccess.textViewPersonMoney.setText(Goods.toPriceString(personViewModel.getPerson().getValue().getMoney()));
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PersonFragment.REQUESTCODE_NEWPERSON){
if (resultCode == RegisteredActivity.RESULTCODE_NEWPERSON){
Person person =(Person) data.getSerializableExtra("newPerson");
// Navigation.findNavController(MainActivity.this.binding.getRoot()).navigate(R.id.navigation_person);
personViewModel = new ViewModelProvider(this).get(PersonViewModel.class);
personViewModel.setPerson(person);
// Log.i("MainActivity", "onActivityResult: "+personViewModel.getPerson().toString());
}
}
}
}

42
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/person/PersonViewModel.java
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@ -0,0 +1,42 @@
package com.ronglin.linshopping.ui.person;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
import com.ronglin.linshopping.application.Database;
import com.ronglin.linshopping.application.Goods;
import com.ronglin.linshopping.application.Person;
import java.util.ArrayList;
public class PersonViewModel extends ViewModel {
private MutableLiveData<Person> personMutableLiveData;
private MutableLiveData<ArrayList<Goods>> buyingListMutableLiveData;
public PersonViewModel() {
personMutableLiveData = new MutableLiveData<>();
buyingListMutableLiveData = new MutableLiveData<>();
buyingListMutableLiveData.setValue(new ArrayList<>());
personMutableLiveData.setValue(PersonFragment.person); //从MainActivity中恢复数据
}
public void setPerson(Person person){
personMutableLiveData.setValue(person);
PersonFragment.person = person; //防止Fragment销毁的时候数据也被清空
}
public LiveData<Person> getPerson() {
return personMutableLiveData;
}
public void setBuyingList(ArrayList<Goods> list){
buyingListMutableLiveData.setValue(list);
}
public LiveData<ArrayList<Goods>> getBuyingList() {
return buyingListMutableLiveData;
}
}

211
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/shopping/ShoppingFragment.java
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package com.ronglin.linshopping.ui.shopping;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import com.ronglin.linshopping.R;
import com.ronglin.linshopping.application.Database;
import com.ronglin.linshopping.application.Goods;
import com.ronglin.linshopping.application.MySQLiteHelper;
import com.ronglin.linshopping.application.Person;
import com.ronglin.linshopping.application.ShoppingListAdapter;
import com.ronglin.linshopping.databinding.FragmentShoppingBinding;
import com.ronglin.linshopping.ui.person.PersonFragment;
import com.ronglin.linshopping.ui.person.PersonViewModel;
import java.util.ArrayList;
public class ShoppingFragment extends Fragment {
private ShoppingViewModel shoppingViewModel;
private FragmentShoppingBinding binding;
private PersonViewModel personViewModel;
private ShoppingListAdapter shoppingListAdapter;
public static ArrayList<Goods> shoppingList = new ArrayList<>();
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
shoppingViewModel =
new ViewModelProvider(this).get(ShoppingViewModel.class);
personViewModel = new ViewModelProvider(this).get(PersonViewModel.class);
binding = FragmentShoppingBinding.inflate(inflater, container, false);
View root = binding.getRoot();
initShoppingList();
return root;
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
private void initShoppingList(){
shoppingViewModel.setShoppingList(shoppingList);
shoppingListAdapter = new ShoppingListAdapter(shoppingList,getContext(),binding);
binding.listViewShopping.setAdapter(shoppingListAdapter);
if (PersonFragment.ISLOGIN){
shoppingViewModel.getShoppingList().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>() {
@Override
public void onChanged(@Nullable ArrayList<Goods> list) {
ShoppingFragment.shoppingList = list;
shoppingListAdapter.setListGoods(list);
binding.listViewShopping.setAdapter(shoppingListAdapter);
}
});
binding.shoppingBottom.buttonDelete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//从购物列表中删除选中的项目
deleteListWithIndex(shoppingViewModel.getShoppingList().getValue(),shoppingListAdapter.getSelectList());
shoppingListAdapter.getSelectList().clear();
shoppingViewModel.setShoppingList(shoppingViewModel.getShoppingList().getValue());
binding.shoppingBottom.textViewAllPrice.setText("0.00");
Toast.makeText(ShoppingFragment.this.getContext(),"删除成功",Toast.LENGTH_SHORT).show();
}
});
binding.shoppingBottom.checkBoxAll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (binding.shoppingBottom.checkBoxAll.isChecked()){
shoppingListAdapter.getSelectList().clear();
for(int i=0;i<shoppingViewModel.getShoppingList().getValue().size();i++){
shoppingListAdapter.getSelectList().add(i);
}
} else {
shoppingListAdapter.getSelectList().clear();
}
int allPrice = 0;
for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
if (shoppingListAdapter.getSelectList().contains(i)){
allPrice+=shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
}
}
binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
binding.listViewShopping.setAdapter(shoppingListAdapter);
}
});
binding.shoppingBottom.buttonBuy.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Person person = personViewModel.getPerson().getValue();
int allPrice = 0;
for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
if (shoppingListAdapter.getSelectList().contains(i)){
allPrice+=shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
}
}
int finalAllPrice = allPrice;
DialogInterface.OnClickListener buyOkListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int index) {
if (person.getMoney() < finalAllPrice){
Toast.makeText(getContext(),"余额不足，购买失败",Toast.LENGTH_SHORT).show();
} else {
Database database = new Database(new MySQLiteHelper(getContext()));
person.setMoney(person.getMoney() - finalAllPrice);
database.updatePersonToSQLite(person);
personViewModel.setPerson(person);
for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
if (shoppingListAdapter.getSelectList().contains(i)){
database.insertGoodsToSQLite(PersonFragment.person,shoppingViewModel.getShoppingList().getValue().get(i),System.currentTimeMillis());
personViewModel.getBuyingList().getValue().add(shoppingViewModel.getShoppingList().getValue().get(i));
}
}
personViewModel.setBuyingList(personViewModel.getBuyingList().getValue());
//从购物列表中删除选中的项目
deleteListWithIndex(shoppingViewModel.getShoppingList().getValue(),shoppingListAdapter.getSelectList());
shoppingListAdapter.getSelectList().clear();
binding.shoppingBottom.textViewAllPrice.setText("0.00");
shoppingViewModel.setShoppingList(shoppingViewModel.getShoppingList().getValue());
Toast.makeText(ShoppingFragment.this.getContext(),"购买成功",Toast.LENGTH_SHORT).show();
}
}
};
DialogInterface.OnClickListener buyCancelListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getContext(),"取消购买",Toast.LENGTH_SHORT).show();
}
};
String infoMeg = "您当前余额为 %s 元\n购物消费共 %s 元\n确认购买？";
infoMeg = String.format(infoMeg,Goods.toPriceString(person.getMoney()),Goods.toPriceString(allPrice));
AlertDialog dialogInfo;
dialogInfo = new AlertDialog.Builder(getContext()).setTitle("确认付款")
.setMessage(infoMeg)
.setIcon(R.drawable.question)
.setPositiveButton("确定",buyOkListener)
.setNegativeButton("取消",buyCancelListener)
.create();
dialogInfo.show();
}
});
int allPrice = 0;
for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
if (shoppingListAdapter.getSelectList().contains(i)){
allPrice += shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
}
}
binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
}
}
private void deleteListWithIndex(ArrayList<Goods> list,ArrayList<Integer> indexList){
for (int i=0;i<list.size();i++) {
if (indexList.contains(i)) {
list.set(i, Goods.DEULT_GOODS);
}
}
for (int i=0;i<indexList.size();i++){
for (int j=0;j<list.size();j++){
if (list.get(j).equals(Goods.DEULT_GOODS)){
list.remove(j);
break;
}
}
}
}
}

27
LinShopping/LinShopping/app/src/main/java/com/ronglin/linshopping/ui/shopping/ShoppingViewModel.java
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package com.ronglin.linshopping.ui.shopping;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
import com.ronglin.linshopping.application.Goods;
import java.util.ArrayList;
public class ShoppingViewModel extends ViewModel {
private MutableLiveData<ArrayList<Goods>> shoppingList;
public ShoppingViewModel() {
shoppingList = new MutableLiveData<>();
}
public void setShoppingList(ArrayList<Goods> list){
this.shoppingList.setValue(list);
ShoppingFragment.shoppingList = list;
}
public LiveData<ArrayList<Goods>> getShoppingList() {
return shoppingList;
}
}

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LinShopping/LinShopping/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
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xmlns:aapt="http://schemas.android.com/aapt"
android:width="108dp"
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android:viewportWidth="108"
android:viewportHeight="108">
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android:endX="85.84757"
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android:strokeColor="#00000000" />
</vector>

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LinShopping/LinShopping/app/src/main/res/drawable/bottom_navigation_item_selector.xml
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<selector xmlns:android="http://schemas.android.com/apk/res/android">
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LinShopping/LinShopping/app/src/main/res/drawable/button_login.xml
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<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false">
<shape>
<solid android:color="#FFA500" />
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<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/nav_view"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="0dp"
android:layout_marginEnd="0dp"
android:background="?android:attr/windowBackground"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="@menu/bottom_nav_menu"
app:itemIconTint="@drawable/bottom_navigation_item_selector"
app:itemTextColor="@drawable/bottom_navigation_item_selector" />
<fragment
android:id="@+id/nav_host_fragment_activity_main"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="55dp"
app:defaultNavHost="true"
app:layout_constraintBottom_toTopOf="@id/nav_view"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/imageViewPreviewDialog"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_gravity="center"
android:layout_margin="5dp"
app:srcCompat="@drawable/default_goods"
android:scaleType="centerInside"/>
<TextView
android:id="@+id/textViewGoodsNameDialog"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:textStyle="bold"
android:layout_gravity="center_vertical"
android:textSize="20sp"
android:layout_margin="5dp"
android:gravity="center"
android:text="橘子" />
<TextView
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android:layout_width="wrap_content"
android:layout_height="20dp"
android:layout_gravity="center"
android:layout_margin="5dp"
android:textColor="#B0C4DE"
android:textSize="10sp"
android:gravity="center"
android:text="TextView" />
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android:id="@+id/textViewGoodsDescribeDialog"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_weight="1"
android:layout_margin="5dp"
android:textSize="10sp"
android:textColor="#708090"
android:gravity="center_vertical"
android:text="TextView" />
<TextView
android:id="@+id/textViewGoodsPriceDialog"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_weight="2"
android:layout_margin="5dp"
android:gravity="center"
android:textSize="20sp"
android:textColor="@color/red"
android:text="TextView" />
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31
LinShopping/LinShopping/app/src/main/res/layout/fragment_goods.xml
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<?xml version="1.0" encoding="utf-8"?>
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xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.goods.GoodsFragment"
android:id="@+id/fragment_goods"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="45dp"
android:orientation="vertical" >
<include
android:id="@+id/top_bar"
layout="@layout/top_bar"/>
</LinearLayout>
<ListView
android:id="@+id/listViewGoods"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:divider="#FFD8BFD8"
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32
LinShopping/LinShopping/app/src/main/res/layout/fragment_person.xml
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment_person"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.shopping.ShoppingFragment" >
<LinearLayout
android:id="@+id/linearLayoutLogin"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:visibility="visible">
<include
android:id="@+id/includeLogin"
layout="@layout/login_layout" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayoutLoginSuccess"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:visibility="invisible" >
<include
android:id="@+id/includeLoginSuccess"
layout="@layout/login_success_layout" />
</LinearLayout>
</LinearLayout>

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