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Fatal Exception: Exception in do in background method (AsyncTask)


Fatal Exception: Exception in do in background method (AsyncTask)

By : user2948500
Date : November 14 2020, 04:51 PM
I wish this helpful for you You can use universal loader library for image download from server.
1) https://github.com/nostra13/Android-Universal-Image-Loader
code :


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Fatal exception AsyncTask #3 is thrown (caused by nullpointer exception)

Fatal exception AsyncTask #3 is thrown (caused by nullpointer exception)


By : Vinit S.
Date : March 29 2020, 07:55 AM
like below fixes the issue SessionManager session object is null. It seems to be some custom object that you forgot to instantiate.
FATAL EXCEPTION: AsyncTask #1 do in background error with JSON

FATAL EXCEPTION: AsyncTask #1 do in background error with JSON


By : B.Boy
Date : March 29 2020, 07:55 AM
hop of those help? I'm trying to parse image to viewpager with asynctask into my app using JSON.I've encounter this problem for 2days after I fixed my JSON problem,now I encounter another problem with Async task. I've look through all the answers in stackoverflow,unfortunately none of them solve my problem.So here's my code and error log,any help would be greatly appreciated. , Okay I fixed the problem by setting a fixed integer into my
code :
public int getCount() {
    return 13;
}
AsyncTask in Fragment not working and shows FATAL EXCEPTION: AsyncTask #1

AsyncTask in Fragment not working and shows FATAL EXCEPTION: AsyncTask #1


By : Ajay Reddy
Date : March 29 2020, 07:55 AM
hop of those help? The following code when run crashes my app. I am calling it in the MainActivity. When run it tells me:
code :
 SecurityException: Permission denied (missing INTERNET permission
 <uses-permission android:name="android.permission.INTERNET" />
Adding android progress dialog inside Background service with AsyncTask,Getting FATAL Exception

Adding android progress dialog inside Background service with AsyncTask,Getting FATAL Exception


By : Bhavya
Date : March 29 2020, 07:55 AM
will be helpful for those in need Actually you can't start a progress dialog from a service, because it needs the activity context not application context which come to be null in your case.
More info here: link1 , link2 and link3
code :
public class TestActivity extends AppCompatActivity {

private Handler handler;

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

    handler = new Handler();
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            //
            new Asynctask_Incident(TestActivity.this).execute("url");
            handler.postDelayed(this, 5 * DateUtils.MINUTE_IN_MILLIS);
        }
    }, 0);
}

public class Asynctask_Incident extends AsyncTask<String, Void, Void> {


    ProgressDialog pDialog;
    Context appContext;

    public Asynctask_Incident(Context ctx) {
        appContext = ctx;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

            pDialog = new ProgressDialog(appContext);
            pDialog.setCanceledOnTouchOutside(false);
            pDialog.setCancelable(false);
            pDialog.setMessage("Please Wait Updating Data From...");
            pDialog.show();


    }

    @Override
    protected Void doInBackground(String... params) {
        try {
            getAPICall();

        } catch (Exception e) {
            e.printStackTrace();

            if (pDialog.isShowing()) {
                pDialog.dismiss();
            }

        }

        return null;
    }

    private void getAPICall() {

        //5 seconds delay for test, you can put your code here
        try {
            Thread.sleep(5 * DateUtils.SECOND_IN_MILLIS);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void onPostExecute(Void aVoid) {

        super.onPostExecute(aVoid);

        if (pDialog.isShowing()) {
            pDialog.dismiss();
        }


    }


}

}
AsyncTask Image Compression - FATAL EXCEPTION: AsyncTask #3 (Upload to Firebase Storage Later))

AsyncTask Image Compression - FATAL EXCEPTION: AsyncTask #3 (Upload to Firebase Storage Later))


By : Walt C.
Date : March 29 2020, 07:55 AM
This might help you I am trying to compress images in a background thread using this class ... , According to your Log the problem is
code :
java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
mBitmap = MediaStore.Images.Media.getBitmap(NextActivity.this.getContentResolver(), params[0]);
@Override
public void onClick(View v) {
    ...
    backgroundImageResize.execute(myUri);
    ...
}
if(mBitmap == null){
    try{
        mBitmap = MediaStore.Images.Media.getBitmap(NextActivity.this.getContentResolver(), params[0]);
    }catch (IOException e){
        Log.e(TAG, "doInBackground: IOException: " + e.getMessage());
    }
    catch (NullPointerException e) {}
    catch (ArrayIndexOutOfBoundsExeption aioobe) {}
}
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