java - 以编程方式下载和安装 apk android 10 11 的问题

Question

我在下载和安装应用程序时遇到问题。在 10 以下的 android 上，此代码有效。我正在尝试从服务器更新我的应用程序。

显现

<uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
    <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
...


<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths" />
        </provider>

活动 如果有更新，则会出现一个快餐栏，通过单击更新，应用程序应下载并安装

 private void showSnackbar() {
        Snackbar snackbar =
                Snackbar.make(
                        findViewById(android.R.id.content),
                        "update available",
                        Snackbar.LENGTH_INDEFINITE);
        snackbar.setAction("update", new View.OnClickListener() {
            @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
            @Override
            public void onClick(View v) {                 
                try {
                    if (checkPermission()) {
                        UpdateApp atualizaApp = new UpdateApp();
                        atualizaApp.setContext(CommonListObjects.this);
                        atualizaApp.execute("http://195.200.000.000:0000/app.apk");
                    } else {
                        requestPermission();
                    }                     
                } catch (android.content.ActivityNotFoundException anfe) {  
                   
                }
            }
        });
        snackbar.show();
    }

 @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == PERMISSION_REQUEST_CODE) {
            if (grantResults.length > 0) {

                boolean locationAccepted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                boolean cameraAccepted = grantResults[1] == PackageManager.PERMISSION_GRANTED;
                if (locationAccepted && cameraAccepted) {
                    UpdateApp updateApp = new UpdateApp();
                    updateApp.setContext(CommonListObjects.this);
                    updateApp.execute("http://195.200.000.000:0000/app.apk");
                }
            }
        }
    }

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    private boolean checkPermission() {
        int result = ContextCompat.checkSelfPermission(getApplicationContext(), WRITE_EXTERNAL_STORAGE);
        int result1 = ContextCompat.checkSelfPermission(getApplicationContext(), READ_EXTERNAL_STORAGE);

        return result == PackageManager.PERMISSION_GRANTED && result1 == PackageManager.PERMISSION_GRANTED;
    }

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    private void requestPermission() {
        ActivityCompat.requestPermissions(this, new String[]{WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE}, PERMISSION_REQUEST_CODE);
    }

这就是它的加载方式

 @Override
        protected String doInBackground(String... arg0) {
            try {    
                URL url = new URL(arg0[0]);
                HttpURLConnection c = (HttpURLConnection) url.openConnection();
                c.setRequestMethod("GET");
                c.setDoOutput(true);
                c.connect();
                int lenghtOfFile = c.getContentLength();
                String PATH = Environment.getExternalStorageDirectory() + "/" + "app.apk";
                File file = new File(PATH);
                boolean isCreate = file.mkdirs();
                File outputFile = new File(file, "app.apk");
                if (outputFile.exists()) {
                    boolean isDelete = outputFile.delete();
                }
                FileOutputStream fos = new FileOutputStream(outputFile);

                InputStream is = c.getInputStream();

                byte[] buffer = new byte[1024];
                int len1;
                long total = 0;
                while ((len1 = is.read(buffer)) != -1) {
                    total += len1;
                    fos.write(buffer, 0, len1);
                    publishProgress((int) ((total * 100) / lenghtOfFile));
                }
                fos.close();
                is.close();
                if (mPDialog != null)
                    mPDialog.dismiss();
                installApk();
            } catch (Exception e) {
                Log.e("UpdateAPP", "Update error! " + e.getMessage());
            }
            return null;
        }

这就是安装的工作方式

   void installApk(){

            String PATH = Environment.getExternalStorageDirectory() + "/" + "app.apk"+ "/" + "app.apk";
            File file = new File(PATH);
            if(file.exists()) {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setDataAndType(uriFromFile(getApplicationContext(), new File(PATH)), "application/vnd.android.package-archive");
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                try {
                    getApplicationContext().startActivity(intent);
                } catch (ActivityNotFoundException e) {
                    e.printStackTrace();
                    Toast.makeText(getApplicationContext(),"Error in opening the file!",Toast.LENGTH_LONG).show();
                }
            }else{
                Toast.makeText(getApplicationContext(),"installing",Toast.LENGTH_LONG).show();
            }
        }
        Uri uriFromFile(Context context, File file) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                return FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", file);
            } else {
                return Uri.fromFile(file);
            }
        }

在 10 以下的 android 上有效，但在 10 和 11 中无效。即使文件不加载。

标签： javaandroid