Activity Instance Remove from stack

Question

I have several activity including TimeLine Activity. This activity start when user logged in successfully to my application. However I have a menu for theme change of my application. When I go to change application theme i does not finish Timeline activity because of next time use. I change my theme color and background and save changes go to Timeline activity with new theme. Then when I exit my application using following code

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        // Ask the user if they want to quit

        new AlertDialog.Builder(this)
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setTitle("")
                .setMessage("Do you want to exit")
                .setNegativeButton("No", null)
                .setPositiveButton("Yes",
                        new DialogInterface.OnClickListener() {
                            // @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                finish();

                                Intent intent = new Intent(
                                        Intent.ACTION_MAIN);
                                intent.addCategory(Intent.CATEGORY_HOME);
                                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                                startActivity(intent);

                            }
                        }).show();
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

But when I start my application again I see the Timeline Activity which was before the theme change. I think Timetine activity instance retain in stack although i start new Timeline activity from ThemeChange Activity.

Activity Flow

Timeline(With Theme Black) --> ThemeChange(By pressing ThemechangeMenu) --> Change Theme and Save Button click --> Start Again TimeLine(With New Theme Successfully) --> Exit my Application Using Avobe code --> Start again my Application --> Appears TimeLine(with Balck Theme not the changed theme)

How can I destroy the previous instance of TimeLine from stack when new Timeline instance is running from Themechange activity using save button click listener?

Answer 1

place finish(); after startActivity(intent); in your code and add android:lauchMode="standard" for the TimeLineActivity in the manifest file. Then the activity will not be in stack.