Question

I have an activity in my app where it takes several screen captures and move to next activity on a button click. I want to show some progress or status to the user while taking screenshot(It takes 5-8 seconds). I tries using AsyncTask with runOnUithread(). But no luck. Even when I wrote the whole code in doInBackground(), I don’t know why ProgressDialog starts after taking all the screenshots. What is the better way to do this? Here is my code:

public class TakeScreenShots extends AsyncTask<Void, Void, Void> {
        private ProgressDialog dialog;


            @Override
            protected void onPreExecute() {
                this.dialog = ProgressDialog.show(MyActivity.this, "MyTitle",
                        "Loading .....", true);

            }

            @Override
            protected Void doInBackground(Void... params) {
                 MyActivity.this.runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        takeScreenshots();

                    }
                }); 

                return null;
            }

            @Override
            protected void onPostExecute(Void unused) {
                gotoNextActivity();

                this.dialog.dismiss();

            }

        }

Answer 1

I got the answer from an answer in this question. I was setting a drawable to the image view. So, I kept that line on Ui Thread and remaining in doInBackground().