Can not access “findViewById” in AsyncTask

Issue

https://stackoverflow.com/a/14164318/3575963

Here, he used

View myFragmentView = inflater.inflate(R.layout.fragment_a, container, false);

From parent class. Also I don't have inflater in my parent, it is a map.

And from asynctask doitbackground, I returned 5 arraylists to make textview in postexecute.

But I can't do because I can't use findviewbyid because I can't get activity. I got context but it does not do anything.

Here is my postexecute

  protected void onPostExecute(Wrapper wrap){

     TextView name = new TextView (mContext);
     TextView type = new TextView (mContext);
     TextView location = new TextView (mContext);
     TextView distance = new TextView (mContext);

     List<Double> dist = new ArrayList();
     List<String> loc = new ArrayList();
     List<String> nme = new ArrayList();
     List<String> typ = new ArrayList();
     List<Calendar> start = new ArrayList();
     List<Calendar> endd = new ArrayList();

     dist = wrap.getDist();
     loc = wrap.getLocation();
     nme = wrap.getName();
     typ = wrap.getType();
     start = wrap.getsDate();
     endd = wrap.geteDate();
     int idx = -1;
     LinearLayout shw_evnt = (LinearLayout) shw_evnt.findViewById(R.id.);

      for(Double dis:dist){
         idx++;
         name.setText(nme.get(idx));
         type.setText(typ.get(idx));
         location.setText(loc.get(idx));
         distance.setText(dist.get(idx).toString()+" meters");

This part is faulty

 LinearLayout shw_evnt = (LinearLayout) shw_evnt.findViewById(R.id.);

I tried other things but it did not work. I will use another layout that was not used before.

show_events.xml:

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent">
    android:id="@+id/shwevnt"

</LinearLayout>

Here caller mapactivity class

 public class MapActivity extends AppCompatActivity  implements GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {
    private int strokeColor = 0xffff0000; //red outline
    private int shadeColor = 0x44ff0000; //opaque red fill
    private int count=0;
    private GoogleMap googleMap;
    private GoogleApiClient mGoogleApiClient;
    private Location mLastLocation;
    private LocationRequest mLocationRequest;
    private Context mContext;
    private String TAG = "Chic";
    private final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
    private int radius;//in meters
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "inside map oncreaste");
        mContext =  getApplicationContext();
        View myFragmentView = inflater.inflate(R.layout.show_events, container, false);
        super.onCreate(savedInstanceState);
        setUpMapIfNeeded();
        Log.d(TAG, "buildgoogleapi called");
        buildGoogleApiClient();
        Log.d(TAG, "after buildgoogleapi called");
     }//end of oncreate

here error on that

View myFragmentView = inflater.inflate(R.layout.show_events, container, false);

because i dont have inflater

I dont want to return from postexecute to main class or another wrapper class. I think i can do inside postexecute, cant i?

LayoutInflater inflater = (LayoutInflater)context.getSystemService
  (Context.LAYOUT_INFLATER_SERVICE);

if i do this, i will take current view, not the view i want to create?

I tried

private Inflater inflater;
     View myFragmentView = inflater.inflate(R.layout.show_events, container, false);

Solution

Just pass the Activity as a parameter to the AsyncTask class. See here. Note that its bad practice to store context as a member variable since the context may change.

Answered By - Daniel Kobe