N. Park N. Park - 4 months ago 12
Android Question

Android M permissions close my app

I check for the required permissions on my Log In screen. The dialog shows asking for the 4 permissions I need. All good, but when the dialog appears, the background becomes black and my app closes (doesn't crash, just closes). When I'm done with choosing the permissions I open the app again and it continues running from where it stopped. How can I make the app continue running while the permissions dialog is shown? I use a class which checks for permissions and call it in the Log In activity.

The class:

public abstract class RuntimePermissionsActivity extends AppCompatActivity {
private SparseIntArray mErrorString;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
mErrorString = new SparseIntArray();
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults){
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
int permissionCheck = PackageManager.PERMISSION_GRANTED;
for (int permission : grantResults){
permissionCheck = permissionCheck + permission;
}
if ((grantResults.length>0) && permissionCheck == PackageManager.PERMISSION_GRANTED){
onPermissionsGranted(requestCode);
}
else {

Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getPackageName()));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(intent);
}
}

public void requestAppPermissions(final String[] requestedPermissions, final int requestCode){
int stringId = 0;
mErrorString.put(requestCode, stringId);
int permissionCheck = PackageManager.PERMISSION_GRANTED;
boolean shouldShowRequestPermissionRationale = false;
for (String permission : requestedPermissions){
permissionCheck = permissionCheck + ContextCompat.checkSelfPermission(this, permission);
shouldShowRequestPermissionRationale = ActivityCompat.shouldShowRequestPermissionRationale(this, permission);
}
if(permissionCheck != PackageManager.PERMISSION_GRANTED){
if(shouldShowRequestPermissionRationale){
ActivityCompat.requestPermissions(RuntimePermissionsActivity.this, requestedPermissions, requestCode);
}
else {
ActivityCompat.requestPermissions(this, requestedPermissions, requestCode);
Toast.makeText(RuntimePermissionsActivity.this, "Please relaunch the application in order for the changes to take effect!", Toast.LENGTH_LONG).show();
}
}
else {
onPermissionsGranted(requestCode);
}

}
public abstract void onPermissionsGranted(int requestCode);
}


The Log In activity call:

LoginActivity.super.requestAppPermissions(new
String[]{Manifest.permission.READ_CONTACTS, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_PERMISSIONS);

Answer

An example of implementing Permissions in any Activity.

SampleActivity.java

public class SampleActivity extends AppCompatActivity{
    private final int PERMISSION_CODE = 1;
    Button button;
    @override
    onCreate(Bundle savedInstance){
        super.onCreate(savedInstance);
        setContentView(R.layout.your_layout);
        button = (Button)findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener(){
            @override
            public void onClick(View view){
                requestPermissionAndContinue();
            }
        });
        //remaining code to continue using the app
        //your actual code should also be in this same class
    }

    private void requestPermissionAndContinue(){
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED){
            if(ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_CONTACTS)){
                Log.e(TAG, "permission denied, show dialog");
            }else{
                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_CONTACTS}, PERMISSION_CODE);
            }
        }else{
            accessContacts();
        }
    }

    private void accessContacts(){
        //your code once you receive permission
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if(grantResults.length > 0 && permissions[0]==PackageManager.PERMISSION_GRANTED){
            accessContacts();
        }else{
             //redirect to settings page or ask permission again
        }
    }
}