Question 128911 in Android Studio Question posted in
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Android Studio – This code causes an Application not responding dialog

I am making a checkers game and the following code causes an application not responding dialog when in operation. How can i make the code efficient and remove the Anr dialog.

public void drawPawns() {
        for(int i=0; i<playableTileView.length; i++) {
            if(playableTile[i].getIsTaken() == 1) playableTileView[i].setBackgroundResource(R.drawable.white_pawn);
            else if(playableTile[i].getIsTaken() == -1) playableTileView[i].setBackgroundResource(R.drawable.brown_pawn);
            else if(playableTile[i].getIsTaken() == 2) playableTileView[i].setBackgroundResource(R.drawable.white_queen);
            else if(playableTile[i].getIsTaken() == -2) playableTileView[i].setBackgroundResource(R.drawable.brown_queen);
            else playableTileView[i].setBackgroundResource(0);
        }
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2

Answers


  1. 0

    Check for any possible exception such as NullPointerException thrown. Check the error logs.

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  2. 0

    How many playableTileView are there?
    If it is more than 5 then You need to use handler as setBackground is a UI heavy operation also you can’t use it background thread here. Also you can check and store the previous set background and set only when it is required.

    I am assuming you have added proper drawable for all image-resolution specially hdpi, xhdpi and xxhdpi

    handler.postDelayed(()->{
if(playableTile[i].getIsTaken() == 1) playableTileView[i].setBackgroundResource(R.drawable.white_pawn);
        else if(playableTile[i].getIsTaken() == -1) playableTileView[i].setBackgroundResource(R.drawable.brown_pawn);
        else if(playableTile[i].getIsTaken() == 2) playableTileView[i].setBackgroundResource(R.drawable.white_queen);
        else if(playableTile[i].getIsTaken() == -2) playableTileView[i].setBackgroundResource(R.drawable.brown_queen);
        else playableTileView[i].setBackgroundResource(0);
},10);
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