更新扫码功能，教师端点击二维码可以全屏展示，教师端长按二维码可以分享到QQ/微信等其他软件

.idea/misc.xml

@@ -95,6 +95,7 @@
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/card_location_poi.xml" value="0.21472663139329806" />
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/card_my_info_record.xml" value="0.25364583333333335" />
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/content_home_activity_stu.xml" value="0.17346014492753623" />
+        <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/dialog_image.xml" value="0.25364583333333335" />
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/dialog_input.xml" value="0.25364583333333335" />
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/fragment_class_list.xml" value="0.25364583333333335" />
         <entry key="..\:/CourseDesign/androidDevelopment/code/final/S.T.Link/app/src/main/res/layout/fragment_course_class_list.xml" value="0.25364583333333335" />

app/src/main/java/com/example/stlink/activitys/fragmentChild/activityStuClassList/CourseSignIn.java

@@ -23,7 +23,6 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.alibaba.fastjson.JSON;
 import com.example.stlink.R;
-import com.example.stlink.activitys.ScanQRCodeActivity;
 import com.example.stlink.configs.adapter.StuCourseSignedAdapter;
 import com.example.stlink.model.constants.ModelFieldConstants;
 import com.example.stlink.model.constants.UrlConstants;
@@ -261,9 +260,7 @@ public class CourseSignIn extends AppCompatActivity {
      * @param stuSignRequest 封装好的学生签到请求
      */
     private void signIn(StuSignRequest stuSignRequest){
-        new Thread(new Runnable() {
+        new Thread(() -> {
-            @Override
-            public void run() {
             System.out.println( "CourseSignIn:stuSignRequest : " + stuSignRequest.toString());
             String json = JSON.toJSONString(stuSignRequest);
             String url = UrlConstants.STUDENT_SIGN;
@@ -283,7 +280,6 @@ public class CourseSignIn extends AppCompatActivity {
                     signHandler.sendMessage(message);
                 }
             }.postConnect(url, json);
-            }
         }).start();
     }
 
@@ -303,9 +299,7 @@ public class CourseSignIn extends AppCompatActivity {
                 try{
                     signCode = Integer.parseInt(signCodeStr);
                     stuSignRequest.setSignCode(signCode);
-                    signHandler = new Handler(new Handler.Callback() {
+                    signHandler = new Handler(msg -> {
-                        @Override
-                        public boolean handleMessage(@NonNull Message msg) {
                         if(msg.arg1 == -1){
                             String errorMsg = (String) msg.obj;
                             Toast.makeText(CourseSignIn.this, errorMsg, Toast.LENGTH_SHORT).show();
@@ -325,7 +319,6 @@ public class CourseSignIn extends AppCompatActivity {
                             getHasSignedList();
                         }
                         return false;
-                        }
                     });
                     signIn(stuSignRequest);
                 }catch ( NumberFormatException numberFormatException){

app/src/main/java/com/example/stlink/activitys/fragmentChild/activityTeaHome/CheckCourseSign.java

@@ -1,21 +1,38 @@
 package com.example.stlink.activitys.fragmentChild.activityTeaHome;
 
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
+import android.provider.MediaStore;
 import android.text.TextUtils;
+import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.FileProvider;
 import androidx.fragment.app.Fragment;
 
+import com.example.stlink.BuildConfig;
 import com.example.stlink.R;
+import com.example.stlink.activitys.fragmentChild.activityStuClassList.CourseSignIn;
 import com.example.stlink.fragments.DidNotSignListFragment;
 import com.example.stlink.fragments.LeaveListFragment;
 import com.example.stlink.fragments.SignListFragment;
@@ -32,6 +49,7 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.internal.LinkedTreeMap;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
@@ -55,6 +73,11 @@ public class CheckCourseSign extends AppCompatActivity {
     private Bundle bundle;
     private Handler handler;
 
+    private Handler shareImageHandler;
+    private static ActivityResultLauncher<Intent> intentActivityResultLauncher;
+
+    Dialog dialog;
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -67,6 +90,7 @@ public class CheckCourseSign extends AppCompatActivity {
     private void initView(){
         CommonUtils.changeStatusBar(CheckCourseSign.this);
 
+
         ivCode = findViewById(R.id.iv_code);
         abIvTitle = findViewById(R.id.ab_iv_title);
         aTvCourseName = findViewById(R.id.ab_tv_course_name);
@@ -78,22 +102,42 @@ public class CheckCourseSign extends AppCompatActivity {
 
         checkCourseSignUtil = new CheckCourseSignUtil(this.getWindow().getDecorView(),CheckCourseSign.this);
 
+        dialog = new Dialog(this, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
 
         setClickListener();
 
         refreshData();
 
-        handler = new Handler(new Handler.Callback() {
+        handler = new Handler(msg -> {
-            @Override
-            public boolean handleMessage(@NonNull Message msg) {
             if(msg.arg1 == 200){
                 aTvCourseName.setText(courseSignMsg.getCourseName());
                 tvCourseStuAmountMsg.setText(String.valueOf(courseSignMsg.getCourseNum()));
             }
             return false;
-            }
         });
         getCourseSignMsg();
+
+        shareImageHandler = new Handler(new Handler.Callback() {
+            @Override
+            public boolean handleMessage(@NonNull Message msg) {
+                if(msg.arg1 == 200){
+                    Intent shareIntent = (Intent) msg.obj;
+                    System.out.println("Here...............shareImageHandler.....");
+                    startActivity(Intent.createChooser(shareIntent, "分享图片"));
+                }
+                return false;
+            }
+        });
+
+        // 意图函数加载器
+        intentActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), result -> {
+            Intent data = result.getData();
+            int resultCode = result.getResultCode();
+            System.out.println("registerForActivityResult...........................");
+            if (resultCode == Activity.RESULT_OK) {
+                System.out.println("图片分享成功。。。。");
+            }
+        });
     }
 
     private void refreshData(){
@@ -117,11 +161,28 @@ public class CheckCourseSign extends AppCompatActivity {
     }
 
     private void setClickListener(){
-        abIvTitle.setOnClickListener(new View.OnClickListener() {
+        abIvTitle.setOnClickListener(v -> finish());
-            @Override
+        ivCode.setOnClickListener(v -> {
-            public void onClick(View v) {
+            ivCode.setVisibility(View.INVISIBLE);
-                finish();
+            View view = LayoutInflater.from(CheckCourseSign.this).inflate(R.layout.dialog_image, null);
-            }
+            ImageView ivCodeBig = view.findViewById(R.id.iv_code_big);
+            ivCodeBig.setImageDrawable(ivCode.getDrawable());
+            dialog.setContentView(view);
+            dialog.show();
+            ivCodeBig.setOnClickListener(v1 -> {
+                dialog.dismiss();
+                ivCode.setVisibility(View.VISIBLE);
+            });
+            ivCodeBig.setOnLongClickListener(v12 -> {
+                Toast.makeText(CheckCourseSign.this, "长按", Toast.LENGTH_SHORT).show();
+                shareImage();
+                return true;
+            });
+        });
+        ivCode.setOnLongClickListener(v -> {
+            Toast.makeText(CheckCourseSign.this, "长按", Toast.LENGTH_SHORT).show();
+            shareImage();
+            return true;
         });
     }
 
@@ -182,4 +243,39 @@ public class CheckCourseSign extends AppCompatActivity {
             }
         }).start();
     }
+
+    /**
+     * 分享二维码图片
+     */
+    private void shareImage(){
+        new Thread(() -> {
+            Intent shareIntent = new Intent();
+            shareIntent.setAction(Intent.ACTION_SEND);
+            shareIntent.setType("image/*");  //设置分享内容的类型
+            Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), getBitmap(ivCode.getDrawable()), null,null));
+            shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
+            Message message = new Message();
+            message.arg1 = 200;
+            message.obj = shareIntent;
+            shareImageHandler.sendMessage(message);
+        }).start();
+    }
+
+    /**
+     * 从drawable获取BitMap
+     * @param drawable 从ImageView中获取的
+     * @return 返回BitMap
+     */
+    private Bitmap getBitmap(Drawable drawable) {
+        Bitmap bitmap = Bitmap.createBitmap(
+                drawable.getIntrinsicWidth(),
+                drawable.getIntrinsicHeight(),
+                drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
+                        : Bitmap.Config.RGB_565);
+        Canvas canvas = new Canvas(bitmap);
+        //canvas.setBitmap(bitmap);
+        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
+        drawable.draw(canvas);
+        return bitmap;
+    }
 }

app/src/main/java/com/example/stlink/fragments/UserInfoFragment.java

@@ -189,9 +189,7 @@ public class UserInfoFragment extends Fragment {
     }
 
     private static void shareApk(){
-        new Thread(new Runnable() {
+        new Thread(() -> {
-            @Override
-            public void run() {
             PackageManager mPackageManager = mAppCompatActivity.getPackageManager();
             List<PackageInfo> packageInfoList = mPackageManager.getInstalledPackages(0);
             System.out.println("UserInfoFragment:PackageInfo : " + packageInfoList);
@@ -224,7 +222,6 @@ public class UserInfoFragment extends Fragment {
             } catch (PackageManager.NameNotFoundException e) {
                 e.printStackTrace();
             }
-            }
         }).start();
     }
 }

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

@@ -159,7 +159,7 @@
         app:layout_constraintTop_toTopOf="@id/ll_course_info_msg"
         app:layout_constraintBottom_toBottomOf="@id/ll_course_info_msg"
         app:layout_constraintRight_toRightOf="parent"
-        android:layout_marginEnd="10dp"
+        android:layout_marginEnd="30dp"
         />
 
 

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/transparent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <ImageView
+        android:id="@+id/iv_code_big"
+        android:layout_width="300dp"
+        android:layout_height="300dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>