Develop Reference

How to implement admob rewarded video ads in a list view?

I want to know how to implement AdMob rewarded video ads in a list view?
I'm using the source code from here
and I want to use it in this class StickerPackDetailsActivity.java
and the layout is gonna like this
![layout][1]
I want to lock add to WhatsApp and unlock it by watching video reward.
but this stickerdetails showed from listview from
![here][2]
so, how to implement video reward ads only in 1 specified item of the listview not all of them?

public class MainActivity extends AppCompatActivity implements RewardedVideoAdListener {
private RewardedVideoAd mRewardedVideoAd;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MobileAds.initialize(this,"ca-app-pub111111111");
mRewardedVideoAd = MobileAds.getRewardedVideoAdInstance(this);
listitem.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
loadRewardedVideoAd();
}
});
}
private void loadRewardedVideoAd() {
mRewardedVideoAd.loadAd("ca-app-pub-",
new AdRequest.Builder().build());
}
#Override
public void onRewardedVideoAdLoaded() {
}
#Override
public void onRewardedVideoAdOpened() {
}
#Override
public void onRewardedVideoStarted() {
}
#Override
public void onRewardedVideoAdClosed() {
loadRewardedVideoAd();
}
#Override
public void onRewarded(RewardItem rewardItem) {
}
#Override
public void onRewardedVideoAdLeftApplication() {
}
#Override
public void onRewardedVideoAdFailedToLoad(int i) {
}
#Override
public void onRewardedVideoCompleted() {
}
#Override
protected void onPause() {
mRewardedVideoAd.pause(this);
super.onPause();
}
#Override
protected void onResume() {
mRewardedVideoAd.resume(this);
super.onResume();
}
}

how to work with the loader when the screen is rotated

I try to use Loaders instead AsyncTask.I can not figure out how to correctly organize the conservation status when the screen is rotated. I receive information from Json and trying create list.
public class FragmentWeatherTestApplication extends Fragment
implements LoaderManager.LoaderCallbacks<List<WeatherItem>> {
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
getLoaderManager().initLoader(0,null,this).forceLoad();
}
...
#Override
public Loader<List<WeatherItem>> onCreateLoader(int id, Bundle args) {
Log.i(TAG, "onCreateLoader");
return new FetchWeatherLoader(getActivity());
}
#Override
public void onLoadFinished(Loader<List<WeatherItem>> loader, List<WeatherItem> data) {
Log.i(TAG, "onLoadFinished");
mItems = data;
setupAdapter();
}
#Override
public void onLoaderReset(Loader<List<WeatherItem>> loader) {
Log.i(TAG, "onLoaderReset");
}
....
private static class FetchWeatherLoader extends AsyncTaskLoader<List<WeatherItem>>{
public FetchWeatherLoader(Context context) {
super(context);
}
#Override
public List<WeatherItem> loadInBackground() {
return new OpenWeatherFetch().fetchItems();
}
}

getApplicationContext returns null

I have the following fragment.The problem is that every time I launch this the app crashes with the following exception : attempt to invoke virtual method android.content.Context android.support.v4.app.FragmentActivity.getApplicationContext() on a null object reference. From what I understand getActivity is called correctly, however the FragmentActivityTesting does not return any context, I'm not sure why this is the case:
public class FragmentATesting extends Fragment {
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onCreate(Bundle SavedInstanceState) {
super.onCreate(SavedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_a,container,false);
}
#Override
public void onActivityCreated(Bundle SavedInstanceState){
super.onActivityCreated(SavedInstanceState);
}
#Override
public void onStart() {
super.onStart();
final SessionManager session = new SessionManager(getActivity().getApplicationContext());
TextView username = (TextView) getView().findViewById(R.id.username_info_txt);
HashMap<String,String> userString = session.getUserDetails();
String usernamee = userString.get("username");
username.setText(usernamee);
vote(usernamee);
}
#Override
public void onResume() {
super.onResume();
final SessionManager session = new SessionManager(getActivity().getApplicationContext());
TextView username = (TextView) getView().findViewById(R.id.username_info_txt);
HashMap<String,String> userString = session.getUserDetails();
String usernamee = userString.get("username");
username.setText(usernamee);
vote(usernamee);
}
#Override
public void onPause() {
super.onPause();
}
#Override
public void onStop() {
super.onStop();
}
#Override
public void onDestroyView() {
super.onDestroyView();
}
#Override
public void onDestroy() {
super.onDestroy();
}
private void vote(final String userId) {
class UploadImage extends AsyncTask<String, Void, String> {
RequestHandler rh = new RequestHandler();
#Override
protected String doInBackground(String... params) {
HashMap<String, String> data = new HashMap<>();
data.put("username",userId);
String result = rh.sendPostRequest(SL_URL2, data);
return result;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
JSONObject jsonObject = null;
String likess = "";
try {
jsonObject = new JSONObject(s);
} catch (JSONException e) {
e.printStackTrace();
}
try {
likess = jsonObject.getString("amount");
} catch (JSONException e) {
e.printStackTrace();
}
TextView amount = (TextView) getView().findViewById(R.id.likes_info_txt);
amount.setText(likess + " Likes");
}}
UploadImage ui = new UploadImage();
ui.execute();
}`
It is inside my ViewPager defined as follows:
public class FragmentActivityTesting extends FragmentActivity {
ViewPager viewPager = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment_activity_testing);
viewPager = (ViewPager) findViewById(R.id.pic_pager);
setStatusBarColor();
FragmentManager fragmentManager = getSupportFragmentManager();
viewPager.setAdapter(new MyAdapter(fragmentManager));
viewPager.setCurrentItem(1);
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("CLOSE_ALL");
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
finish();
}
};
registerReceiver(broadcastReceiver, intentFilter);
}
#TargetApi(21)
public void setStatusBarColor() {
Window window = this.getWindow();
// clear FLAG_TRANSLUCENT_STATUS flag:
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
// add FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS flag to the window
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
if (Integer.valueOf(android.os.Build.VERSION.SDK) >= 21) {
window.setStatusBarColor(this.getResources().getColor(R.color.green));
}
}}
class MyAdapter extends FragmentStatePagerAdapter {
public MyAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
if (position ==0) {
fragment = new FragmentATesting();
}
else if (position == 1) {
fragment = new FragmentBTesting();
}
else if (position == 2) {
fragment = new FragmentCTesting();
}
return fragment;
}
#Override
public int getCount() {
return 3;
}
}

How to allow the device rotation while onPostExecute (UI Blocking Task) running

I'm new to android but based on my understanding that onPostExecute has to run on the main UI thread to be able to access Views and so on which blocks the UI until it finishes. But the application looks ugly -as if it's crashing- when I try to rotate the device while onPostExecute is running (I know it should be a light weight task but I keep in mind slow phones so this might actually happen in my HBO)
Now, here's my code and I know I believe I should use interfaces for communication between my Task, Fragment, and Activity but it's just a proof of concept for now.
//MovieTask Class
public class MovieTask extends AsyncTask<Void, Void, String> {
private Activity activity;
public MovieTask(Activity activity) {
onAttach(activity);
}
//should be an interface
public void onAttach(Activity activit) {
this.activity = activit;
}
//should be an interface
public void onDetach() {
this.activity = null;
}
#Override
protected String doInBackground(Void... params) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
}
Log.e("ASYNC TASK", "DONE");
return "DONE: FROM DO TO POST";
}
#Override
protected void onPostExecute(String s) {
if(this.activity != null)
{
((MainActivity) activity).ShowResult(s);
Log.e("MovieTask", "Result Received");
}else
Log.e("MovieTask", "Activity is null (1)");
}
}
//My Non-UI Fragment to decouple the Task from the Activity
public class NonUIFragment extends Fragment {
private MovieTask myTask;
private Activity activity;
public NonUIFragment() {
// Required empty public constructor
}
public void BeginTask() {
if (activity != null) {
myTask = new MovieTask(activity);
myTask.execute();
}
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
//check that the passed context is an Activity first then,
if (context instanceof Activity) {
this.activity = (Activity) context;
if(myTask != null) {
myTask.onAttach((Activity) context);
}
}
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance
setRetainInstance(true);
}
#Override
public void onDetach() {
super.onDetach();
if(myTask != null) {
myTask.onDetach();
}
}
//Main Activity (Task Consumer)
public class MainActivity extends AppCompatActivity {
NonUIFragment nonUIFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
nonUIFragment = new NonUIFragment();
getSupportFragmentManager()
.beginTransaction()
.add(nonUIFragment, "nonUIFragment")
.commit();
}
else
{
nonUIFragment = (NonUIFragment) getSupportFragmentManager().findFragmentByTag("nonUIFragment");
}
Button btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
nonUIFragment.BeginTask();
}
});
}
//should be the consumer interface
public void ShowResult(String result)
{
try {
Thread.sleep(5000);
TextView txtVw = (TextView) findViewById(R.id.txtVw);
txtVw.setText(result);
} catch (InterruptedException e) {
Log.e("MovieTask", "mCallbacks is null (2)");
}
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
TextView txtVw = (TextView) findViewById(R.id.txtVw);
String result = txtVw.getText().toString();
outState.putString("result", result);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
String result = savedInstanceState.getString("result");
TextView txtVw = (TextView) findViewById(R.id.txtVw);
txtVw.setText(result);
}
}
UPDATE 1
In the chat Jigs suggested trying 'runOnUiThread', however onPostExecute already runs on the UI Thread so unfortunately it's kind of irrelevant. I guess what I'm trying to do is not block the UI while the behaviour of onPostExecute is a UI-Blocking in nature which makes it kind of impossible. I'll leave the question around in case anybody has different thoughts!

How do I know the state of the ToggleButton from another activity?

How do I know the state of the ToggleButton from another activity?
i have class
public class MainScreen extends Activity{
protected ToggleButton tgbutton;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainscreen);
tgbutton = (ToggleButton)findViewById(R.id.advice);
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(getApplicationContext());
tgbutton.setChecked(sharedPreferences.getBoolean("toggleButton", false));
}
public void oneClick(View v) {
if(tgbutton.isChecked() == false) { playSound(mSound); }
else { pauseSound(mSound); }
}
}
and
public class SmallprintA extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.smallprint_a);
OnClickListener SendOnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
if(tgbutton.isChecked() == true){ playSound(mEmpty); }
else { playSound(mEmpty); }
}
};
}
I need in the class SmallprintA determine the state of the ToggleButton tgbutton. This is possible without class inheritance?

I did tgbutton is static
public class MainScreen extends Activity{
protected static ToggleButton tgbutton; // STATIC
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainscreen);
tgbutton = (ToggleButton)findViewById(R.id.advice);
}
public void oneClick(View v) {
if(tgbutton.isChecked() == false) { playSound(mSound); }
else { pauseSound(mSound); }
}
}
and
public class SmallprintA extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.smallprint_a);
OnClickListener SendOnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
if(MainScreen.tgbutton.isChecked() == true){ playSound(mEmpty); }
else { playSound(mEmpty); }
}
};
}