如何在Android 11中获取存储权限

Question

我的话题，我试图在android中获取存储权限，我的权限代码在andoid 11下方工作，但问题是当我尝试在android 11中获取存储权限时，代码不起作用，所以请帮助我…

这是我的代码：-

这是我的AndroidManifest.xml

Android:requestlegacyexternalstarge = " true "

这是我的JavaCode代码

@Override 
 protected void onActivityResult(int _requestCode, int _resultCode, Intent _data) { 
  super.onActivityResult(_requestCode, _resultCode, _data); 
  if (_resultCode == RESULT_OK){
        if (Build.VERSION.SDK_INT == Build.VERSION_CODES.R){
              if (Environment.isExternalStorageManager()){
                    Toast.makeText(this,"Permission Granted",Toast.LENGTH_SHORT).show();
        i.setClass(getApplicationContext(), Main2Activity.class); 
        startActivity(i);
                } else {
                    _takePermission();
                }
          }
  } 
  switch (_requestCode) { 
    
   default: 
   break; 
  } 
 }


public boolean _isPermissionGranted() { 
  if (Build.VERSION.SDK_INT == Build.VERSION_CODES.R){
   
       return Environment.isExternalStorageManager();
  } else  {
   
       int readexternalStoragePermission = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE);
       return  readexternalStoragePermission == PackageManager.PERMISSION_GRANTED;
  } 
 }



public void _takePermission() { 
  if (Build.VERSION.SDK_INT == Build.VERSION_CODES.R) {
       try {
            Intent intent = new Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION);
            intent.addCategory("android.intent.category.DEFAULT");
            intent.setData(Uri.parse(String.format("package:%s",getApplicationContext().getPackageName())));
            startActivityForResult(intent,100);
        } catch (Exception exception){
            Intent intent = new Intent();
            intent.setAction(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);
            startActivityForResult(intent,100);
        }
  } else {
       ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},101);
  } 
 } 
  
  
  @Override
 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
      super.onRequestPermissionsResult(requestCode, permissions, grantResults);
      if (grantResults.length > 0){
           if (requestCode == 101){
                boolean readExternalStorage = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                if (readExternalStorage){
                     Toast.makeText(this,"Permission Granted",Toast.LENGTH_SHORT).show();
     i.setClass(getApplicationContext(), Main2Activity.class); 
     startActivity(i);
                 } else {
                     _takePermission();
                 }
            }
       }

以上是完整的代码，请检查并告诉我我的错误是什么，正确的桥是什么。

感谢您的观看..

Answer 1

Android:requestlegacyexternalstarge = " true "不会影响您的应用是否针对Sdk

>

必须将此添加到清单：

请求许可：

    ActivityCompat.requestPermissions(this,
                        new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,
                                Manifest.permission.MANAGE_EXTERNAL_STORAGE}, 1);

    if (!Environment.isExternalStorageManager()) 

    Intent intent = new Intent();
                    intent.setAction(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION);
                    Uri uri = Uri.fromParts("package", this.getPackageName(), null);
                    intent.setData(uri);
                    startActivity(intent);