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Android AsyncTask in external class


Android AsyncTask in external class

By : user3851544
Date : October 16 2020, 11:12 AM
fixed the issue. Will look into that further I've been working on an app and I've managed to get the AsyncTask to work fine when it's in an inner class. , Instead of passing 2 parameters pass only one like this:
code :


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External AsyncTask class with ProgressDialog [Update: and returning back?]

External AsyncTask class with ProgressDialog [Update: and returning back?]


By : wdsvoltage
Date : March 29 2020, 07:55 AM
should help you out You were creating the ProgressDialog with a null context. The following code worked for me.
code :
public class AsyncClass extends AsyncTask<Void, String, Void> {
    private Context context;
    ProgressDialog dialog;

        public AsyncClass(Context cxt) {
            context = cxt;
            dialog = new ProgressDialog(context);
        }

        @Override
        protected void onPreExecute() {
            dialog.setTitle("Please wait");
            dialog.show();
        }

        @Override
        protected Void doInBackground(Void... unused) {
            SystemClock.sleep(2000);
            return (null);
        }

        @Override
        protected void onPostExecute(Void unused) {
            dialog.dismiss();
        }
    }
Android: How to update an UI from AsyncTask if AsyncTask is in a separate class?

Android: How to update an UI from AsyncTask if AsyncTask is in a separate class?


By : Jeff Miller
Date : March 29 2020, 07:55 AM
will be helpful for those in need AsyncTask is always separate class from Activity, but I suspect you mean it is in different file than your activity class file, so you cannot benefit from being activity's inner class. Simply pass Activity context as argument to your Async Task (i.e. to its constructor)
code :
class MyAsyncTask extends AsyncTask<URL, Integer, Long> {

    WeakReference<Activity> mWeakActivity;

    public MyAsyncTask(Activity activity) {
       mWeakActivity = new WeakReference<Activity>(activity);
    }

 ...
int id = findViewById(...)
Activity activity = mWeakActivity.get();
if (activity != null) {
   int id = activity.findViewById(...);
}
How to implementing Android Studio login Activity with a class that extents an AsyncTask external db

How to implementing Android Studio login Activity with a class that extents an AsyncTask external db


By : Kien Ku
Date : March 29 2020, 07:55 AM
I wish this help you My app should check if an email and password pair exist in a remote db by a login.php. , You should include internet permission
code :
<manifest xlmns:android...>
...
<uses-permission android:name="android.permission.INTERNET" />
<application ...
</manifest>
How to update UI on external asynctask on android

How to update UI on external asynctask on android


By : Tobias Geipert
Date : March 29 2020, 07:55 AM
should help you out Do not call onProgressUpdate(). Instead just call publishProgress("The String").
By calling publishProgress without a parameter you will have no values in onProgressUpdate. That's why you get an IndexOutOfBondException.
This AsyncTask class should be static or leaks might occur (anonymous android.os.AsyncTask)

This AsyncTask class should be static or leaks might occur (anonymous android.os.AsyncTask)


By : Arval Headrick
Date : March 29 2020, 07:55 AM
To fix the issue you can do Create a separate class that implements AsyncTask, then in your activity instantiate it, and run the execute method.
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