Android：在運行時請求自定義權限

Question

任何人都可以提供一些見解如何請求在Android Marshmallow中的用戶定義的自定義運行時權限？我正在開發具有讀取權限的自定義內容提供程序，另一個應用程序正在嘗試使用自定義內容提供程序訪問數據。

Answer 1

我個人更喜歡使用權限庫。取而代之的大型樣板代碼，他們往往是有效的，代碼是非常精確的

請參閱本PermissionsDispatcher

@RuntimePermissions 
public class MainActivity extends AppCompatActivity { 
    //sepcify permissions here 
    @NeedsPermission(Manifest.permission.CAMERA) 
    void showCamera() { 
     //work after permission is granted 
    } 

    @OnShowRationale({Manifest.permission.READ_CONTACTS, Manifest.permission.WRITE_CONTACTS}) 
    void showRationaleForCamera(final PermissionRequest request) { 
     new AlertDialog.Builder(this) 
      .setMessage(R.string.permission_camera_rationale) 
      .setPositiveButton(R.string.button_allow, (dialog, button) -> request.proceed()) 
      .setNegativeButton(R.string.button_deny, (dialog, button) -> request.cancel()) 
      .show(); 
    } 

    @OnPermissionDenied({Manifest.permission.READ_CONTACTS, Manifest.permission.WRITE_CONTACTS}) 
    void showDeniedForCamera() { 
     //works when permissions denied 
     Toast.makeText(this, R.string.permission_camera_denied, Toast.LENGTH_SHORT).show(); 
    } 

    @OnNeverAskAgain({Manifest.permission.READ_CONTACTS, Manifest.permission.WRITE_CONTACTS}) 
    void showNeverAskForCamera() { 
     Toast.makeText(this, R.string.permission_camera_neverask, Toast.LENGTH_SHORT).show(); 
    } 
} 

Answer 2

這對我的作品。

public class MainActivity extends AppCompatActivity { 
private static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1; 

private boolean checkAndRequestPermissions() { 
    Context context=getApplicationContext(); 
    int locationpermission = ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION); 
    int readphonestatepermission = ContextCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE); 
    int permissionSendMessage = ContextCompat.checkSelfPermission(context,Manifest.permission.SEND_SMS); 
    int writepermission = ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE); 
    int readexternalstoragepermission = ContextCompat.checkSelfPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE); 


    List<String> listPermissionsNeeded = new ArrayList<>(); 

    if (locationpermission != PackageManager.PERMISSION_GRANTED) { 
     listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION); 
    } 

    if (readphonestatepermission != PackageManager.PERMISSION_GRANTED) { 
     listPermissionsNeeded.add(Manifest.permission.READ_PHONE_STATE); 
    } 
    if (permissionSendMessage != PackageManager.PERMISSION_GRANTED) { 
     listPermissionsNeeded.add(Manifest.permission.SEND_SMS); 
    } 

    if (writepermission != PackageManager.PERMISSION_GRANTED) { 
     listPermissionsNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE); 
    } 

    if (readexternalstoragepermission != PackageManager.PERMISSION_GRANTED) { 
     listPermissionsNeeded.add(Manifest.permission.READ_EXTERNAL_STORAGE); 
    } 

    if (!listPermissionsNeeded.isEmpty()) { 
     requestPermissions(listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), REQUEST_ID_MULTIPLE_PERMISSIONS); 
     return false; 
    } 
    return true; 
} 



@Override 
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { 
    super.onRequestPermissionsResult(requestCode, permissions, grantResults); 


    if (requestCode == REQUEST_ID_MULTIPLE_PERMISSIONS) { 



     if (grantResults.length > 0) { 
      for (int i = 0; i < permissions.length; i++) { 


       if (permissions[i].equals(Manifest.permission.ACCESS_FINE_LOCATION)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "location granted"); 


        } 
       } else if (permissions[i].equals(Manifest.permission.READ_PHONE_STATE)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "read phone state granted"); 


        } 
       } else if (permissions[i].equals(Manifest.permission.SEND_SMS)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "sms granted"); 


        } 

       }else if (permissions[i].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "write external granted"); 


        } 
       }else if (permissions[i].equals(Manifest.permission.READ_EXTERNAL_STORAGE)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "read external storage granted"); 

         Toast.makeText(SplashActivity.this, "Please Restart the Application....... ", Toast.LENGTH_LONG).show(); 
        } 
       }else if (permissions[i].equals(Manifest.permission.READ_LOGS)) { 
        if (grantResults[i] == PackageManager.PERMISSION_GRANTED) { 
         Log.e("msg", "read logs granted"); 



        } 
       } 


      } 

     } 


    } 
} 
@SuppressLint("NewApi") 
@Override 
protected void onCreate(Bundle v) { 
    // TODO Auto-generated method stub 
    super.onCreate(v); 
    setContentView(R.layout.activity_splash); 


    if (checkAndRequestPermissions()) { 

     Toast.makeText(MainActivity.this, "Granted all permissions", Toast.LENGTH_SHORT).show(); 


    } 
} 
}