How to take CLEAR_APP_CACHE permission in Android Marshmallow at runtime?

Question

Code:

void clearCache() {

    if (mClearCacheObserver == null) {
        mClearCacheObserver = new CachePackageDataObserver();
    }         


        

Answer 1

Add Permission in AndroidManifest.xml

Make a Constant for Request Code.

Constants.java

public static final int REQUEST_CODE_FOR_PERMISSION = 501;

Request Permission :-

public static void requestPermissionForClearCache(Activity activity) {
    if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CLEAR_APP_CACHE) != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.CLEAR_APP_CACHE)) {
            ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CLEAR_APP_CACHE}, Constatnts.REQUEST_CODE_FOR_PERMISSION);
        } else {
            ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.CLEAR_APP_CACHE}, Constatnts.REQUEST_CODE_FOR_PERMISSION);
        }
    }
}

Override Below method in Fragment.

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    if (requestCode == Constatnts.REQUEST_CODE_FOR_PERMISSION && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        // permission was granted successfully
    } else {
        // permission was NOT granted successfully
    }
}