Android：在运行时请求自定义权限

Question

任何人都可以提供一些见解如何请求在Android Marshmallow中的用户定义的自定义运行时权限？我正在开发具有读取权限的自定义内容提供程序，另一个应用程序正在尝试使用自定义内容提供程序访问数据。

Answer 1

我个人更喜欢使用权限库。取而代之的大型样板代码，他们往往是有效的，代码是非常精确的

请参阅本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

这对我的作品。

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(); 


    } 
} 
}