导航栏跳转解决

.idea/misc.xml

@@ -69,7 +69,7 @@
       </profile-state>
     </entry>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/java/com/orangesale/cn/MainActivity.java

@@ -11,9 +11,11 @@ import android.widget.Toast;
 
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.orangesale.cn.activity.IndexActivity;
 import com.orangesale.cn.activity.OrangeDatabase;
 import com.orangesale.cn.activity.RegisterActivity;
 import com.orangesale.cn.activity.UserActivity;
+import com.orangesale.cn.fragment.IndexFragment;
 
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
     private Button registerButton, loginButton;
@@ -35,7 +37,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
                 break;
             case R.id.login:
                 if (validateLogin()) {
-                    Intent intent1 = new Intent(MainActivity.this, UserActivity.class);
+                    Intent intent1 = new Intent(MainActivity.this, IndexActivity.class);
                     Bundle bundle = new Bundle();
                     OrangeDatabase orangeDatabase = new OrangeDatabase(MainActivity.this);
                     bundle.putString("username", usernameText.getText().toString());

app/src/main/java/com/orangesale/cn/activity/IndexActivity.java

@@ -3,7 +3,7 @@ package com.orangesale.cn.activity;
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
-
+import android.app.FragmentTransaction;
 import android.widget.LinearLayout;
 import androidx.annotation.Nullable;
 
@@ -14,6 +14,7 @@ import com.orangesale.cn.fragment.IndexFragment;
 import com.orangesale.cn.fragment.PersonFragment;
 import com.orangesale.cn.fragment.ProductFragment;
 import com.orangesale.cn.fragment.ShoppingFragment;
+import com.orangesale.cn.fragment.TimeService;
 
 
 public class IndexActivity extends Activity implements View.OnClickListener {
@@ -21,7 +22,6 @@ public class IndexActivity extends Activity implements View.OnClickListener {
     private ProductFragment productFragment;
     private ShoppingFragment shoppingFragment;
     private IndexFragment indexFragment;
-
     private PersonFragment personFragment;
 
     private LinearLayout indexLine;
@@ -29,12 +29,9 @@ public class IndexActivity extends Activity implements View.OnClickListener {
     private LinearLayout shoppingLine;
     private LinearLayout personLine;
 
-    public IndexActivity(LinearLayout indexLine,LinearLayout productLine, LinearLayout shoppingLine, LinearLayout personLine) {
-        this.productLine = productLine;
-        this.personLine = personLine;
-        this.indexLine = indexLine;
-        this.shoppingLine = shoppingLine;
-    }
+    Intent timeServiceIntent;
+
+
 
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
@@ -42,6 +39,8 @@ public class IndexActivity extends Activity implements View.OnClickListener {
         setContentView(R.layout.activity_main);
         init();
         initIndexFragment();
+        Thread thread = new Thread(runnable);
+        thread.start();
     }
 
     private void init() {
@@ -74,7 +73,7 @@ public class IndexActivity extends Activity implements View.OnClickListener {
                 initshoppingFragment();
                 break;
 
-            case R.id.content_pearson:
+            case R.id.content_person:
                 //注册验证方法
                 initpersonFragment();
                 break;
@@ -96,7 +95,7 @@ public class IndexActivity extends Activity implements View.OnClickListener {
     }
 
     private void initshoppingFragment() {
-        android.app.FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
         if (shoppingFragment == null) {
             shoppingFragment = new ShoppingFragment();
         }
@@ -114,13 +113,22 @@ public class IndexActivity extends Activity implements View.OnClickListener {
     }
 
     private void initIndexFragment() {
-        android.app.FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
         if (indexFragment == null) {
             indexFragment = new IndexFragment();
         }
-            transaction.replace(R.id.main_content,productFragment);
+            transaction.replace(R.id.main_content,indexFragment);
             transaction.commit();
     }
+    Runnable runnable = () -> {
+        timeServiceIntent = new Intent(IndexActivity.this, TimeService.class);
+        startService(timeServiceIntent);
+    };
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        stopService(timeServiceIntent);
+    }
 
 }
 

app/src/main/java/com/orangesale/cn/activity/RegisterActivity.java

@@ -16,6 +16,7 @@ import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 
 import com.lljjcoder.citypickerview.widget.CityPicker;
+import com.orangesale.cn.MainActivity;
 import com.orangesale.cn.R;
 
 public class RegisterActivity extends AppCompatActivity implements View.OnClickListener, RadioGroup.OnCheckedChangeListener {
@@ -43,6 +44,7 @@ public class RegisterActivity extends AppCompatActivity implements View.OnClickL
         usernameEdit = findViewById(R.id.reg_username);
         passwordEdit = findViewById(R.id.reg_password);
         surePasswordEdit = findViewById(R.id.reg_sure_password);
+
         regButton = findViewById(R.id.reg_register);
         regButton.setOnClickListener(this);
         sexGroup = findViewById(R.id.sex);
@@ -56,6 +58,7 @@ public class RegisterActivity extends AppCompatActivity implements View.OnClickL
             case R.id.reg_province:
                 initCityPicker();
                 cityPicker.show();
+
                 break;
             case R.id.reg_register:
                 //注册验证方法
@@ -127,7 +130,7 @@ public class RegisterActivity extends AppCompatActivity implements View.OnClickL
                     OrangeDatabase orangeDatabase = new OrangeDatabase(RegisterActivity.this);
                     SQLiteDatabase sqLiteDatabase = orangeDatabase.getWritableDatabase();
                     insertData(sqLiteDatabase, bundle);
-                    Intent intent = new Intent(RegisterActivity.this, UserActivity.class);
+                    Intent intent = new Intent(RegisterActivity.this, IndexActivity.class);
                     intent.putExtras(bundle);
                     startActivity(intent);
                 } else {

app/src/main/java/com/orangesale/cn/fragment/IndexFragment.java

@@ -71,8 +71,14 @@ public class IndexFragment extends Fragment implements View.OnClickListener {
         product1.setProductName("褚橙");
         product1.setProductPrice(new BigDecimal("29.9"));
 
+        Product product2 = new Product();
+        product1.setImageUrlId(R.drawable.qicheng);
+        product1.setProductName("脐橙");
+        product1.setProductPrice(new BigDecimal("29.9"));
+
         productList.add(product);
         productList.add(product1);
+        productList.add(product2);
     }
 
 }

app/src/main/java/com/orangesale/cn/fragment/TimeService.java

@@ -0,0 +1,89 @@
+package com.orangesale.cn.fragment;
+
+
+
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.IBinder;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+
+import com.orangesale.cn.R;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class TimeService extends Service {
+    private static Timer timer = null;
+    private NotificationManager manager;
+    private NotificationCompat.Builder builder;
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    /** 清除通知     */
+    private void cleanAllNotification() {
+        manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
+        manager.cancelAll();
+        if (timer != null) {
+            timer.cancel();
+            timer = null;
+        }
+
+    }
+
+    /**
+     * 添加通知
+     */
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        long period = 60 * 1000; //1分钟一个周期
+        if (timer == null) {
+            timer = new Timer();
+        }
+        timer.schedule(new TimerTask() {
+            @Override
+            public void run() {
+                /**
+                 * NotificationChannel是android8.0新增的特性，如果App的targetSDKVersion>=26，
+                 * 没有设置channel通知渠道的话，就会导致通知无法展示。
+                 * 报错内容：Failed to post notification on channel “null”
+                 */
+                NotificationChannel channel = new NotificationChannel("channel", "通知", NotificationManager.IMPORTANCE_DEFAULT);
+                manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
+                manager.createNotificationChannel(channel);
+                builder = new NotificationCompat.Builder(TimeService.this);
+                builder.setContentTitle("提醒系统当前时间");
+                builder.setSmallIcon(R.drawable.chengzi);
+                builder.setChannelId("channel");
+                Date date = new Date();
+                SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+                builder.setContentText("系统当前时间为：" + formatter.format(date));
+                builder.setAutoCancel(true);
+                builder.setDefaults(Notification.DEFAULT_ALL);
+                Notification notification = builder.build();
+                manager.notify(1, notification);
+
+            }
+        }, 0, period);
+
+        return super.onStartCommand(intent, flags, startId);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        cleanAllNotification();
+        System.out.println("onDestory: cleanAllNotification ");
+    }
+}

app/src/main/res/layout/content_index.xml

@@ -96,7 +96,7 @@
             </LinearLayout>
 
             <LinearLayout
-                android:id="@+id/juzi"
+                android:id="@+id/shuiguo"
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
@@ -106,7 +106,7 @@
                 <ImageView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:src="@drawable/juzi" />
+                    android:src="@drawable/shuiguo" />
 
                 <TextView
                     android:layout_width="wrap_content"

app/src/main/res/layout/content_nav.xml

@@ -93,7 +93,7 @@
 
     <!--个人-->
     <LinearLayout
-        android:id="@+id/content_pearson"
+        android:id="@+id/content_person"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_weight="1"
@@ -104,7 +104,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
-            android:src="@drawable/pearson" />
+            android:src="@drawable/person" />
 
         <TextView
             android:layout_width="wrap_content"