Android runtime permissions- how to implement

Question

Android Developer Documentation gives this example of requesting permissions at runtime:

// Here, thisActivity is the current activity
if (ContextCompat.chec         


        

Answer 1

public class SplashActivity extends RuntimePermissionsActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash);

    SplashActivity.super.requestAppPermissions(new
                    String[]{android.Manifest.permission.READ_PHONE_STATE,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.READ_EXTERNAL_STORAGE}, R.string.app_name
            , 20);

}

@Override
public void onPermissionsGranted(int requestCode) {


    try {
        TelephonyManager tele = (TelephonyManager) getApplicationContext()
                .getSystemService(Context.TELEPHONY_SERVICE);

        String imei =tele.getDeviceId()
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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 {

        finish();

    }
}

public void requestAppPermissions(final String[] requestedPermissions,
                                  final int stringId, final int requestCode) {
    mErrorString.put(requestCode, stringId);
    int permissionCheck = PackageManager.PERMISSION_GRANTED;
    boolean shouldShowRequestPermissionRationale = false;
    for (String permission : requestedPermissions) {
        permissionCheck = permissionCheck + ContextCompat.checkSelfPermission(this, permission);
        shouldShowRequestPermissionRationale = shouldShowRequestPermissionRationale || ActivityCompat.shouldShowRequestPermissionRationale(this, permission);
    }
    if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
        if (shouldShowRequestPermissionRationale) {
            ActivityCompat.requestPermissions(RuntimePermissionsActivity.this, requestedPermissions, requestCode);
            /*Snackbar.make(findViewById(android.R.id.content), stringId,
                    Snackbar.LENGTH_INDEFINITE).setAction("GRANT",
                    new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            ActivityCompat.requestPermissions(RuntimePermissionsActivity.this, requestedPermissions, requestCode);
                        }
                    }).show();*/
        } else {
            ActivityCompat.requestPermissions(this, requestedPermissions, requestCode);
        }
    } else {
        onPermissionsGranted(requestCode);
    }
}

public abstract void onPermissionsGranted(int requestCode);

}