Question

In my android project, I have a countdown that randomizes a boolean for an array. The problem is, every time it ticks it always creates the array and the for loop. Can someone help me how to import my codes on a seperate class and method? I just want to call the returned value of an array in my countdown while it loops on a separate class. Please help me, TIA! 🙂

This is my countdown inside my onCreate():

new CountDownTimer(300000, 1000) {
  public void onTick(long msUntilFinished) {
    txtCounter.setText("" + msUntilFinished/1000);
    ImageView[] pic= {img1, img2, img3, img4, img5};
    Random aRandom = new Random();

    for (int i=0;i<12;i++){
      arrays[i] = aRandom.nextBoolean();

      if(arrays[i]){
        pic[i].setImageResource(R.drawable.show);
        appear = true;
      } else {
        pic[i].setImageResource(R.drawable.hide);
        appear = false;
      }
    }
  } // end of onTick

  public void onFinish() {
    txtCounter.setText("done!");
  }
}.start();

Answer 1

If you don’t want the array to be created each time it ticks just place the array initialization outside of the thread like this:

for (int i=0;i<12;i++){ arrays[i] = aRandom.nextBoolean();}
new CountDownTimer(300000, 1000)
{
...
}.start();

Important: “arrays” has to be final. If you cannot do this then you have to do:

for (int i=0;i<12;i++){ arrays[i] = aRandom.nextBoolean();}
final SomeClass[] finalArray = arrays;
new CountDownTimer(300000, 1000)
{
...
 if(finalArray[i]) ...
...
}.start();