when i change ImageButton image , not changing at real-time

Question

i use this code for change ImageButton image , but it not change at real-time.

it change one time only , not ImageButton by ImageButton.

for(int i = 1 ; i <= left_num ; i++ ){
    int resourceId = this.getResources().getIdentifier("c"+i+"_r"+right_num, "id", this.getPackageName());
    ImageButton imageButton = (ImageButton) findViewById(resourceId);
    imageButton.setBackgroundResource(R.drawable.white_circle);
    sleep(500);
}

Karim · Accepted Answer · 2013-12-27T22:07:12.957

1

It probably changes "in real-time", but you're not able to see it because the line of code sleep(500) is ignored and does not do what you expect it to do.

Edit:

You can set a Timer to update the ImageButtons sequentially by calling the method below:

private void updateImageButtonsSequentially() {
    int iteration = 0;
    Timer timer = new Timer();
    timer.schedule(new TimerTask() {
        @Override
        public void run() {
              int resourceId = this.getResources().getIdentifier("c"+iteration+"_r"+right_num, "id", this.getPackageName());
              iteration++;
              ImageButton imageButton = (ImageButton) findViewById(resourceId);
              imageButton.setBackgroundResource(R.drawable.white_circle);
        }
    },0,500);
}

edited Dec 27 '13 at 22:07

answered Dec 27 '13 at 21:34

Karim

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i want to pause it some time to see the changes – Mlook Dec 27 '13 at 21:47
You might want to use a Timer to execute the code inside your `for` loop every 500ms. – Karim Dec 27 '13 at 21:50
شكراً لك , أفدتني كثير – Mlook Dec 27 '13 at 22:20

when i change ImageButton image , not changing at real-time

1 Answers1