How to set delay in Android onClick function

Question

) I'm in a process of creating a memory game. My problem is that whenever i click for the second time, i can't even see toggled button. To be clear - first click toggles the togglebutton, so i can see the number it holds, the second click on a different togglebutton is suposed to toggle it, show me the number and then proceed to either set a score +1 if numbers are the same, or reverse them back again if they're different.

Below is the code that i use as my onClick function, i've been thinking about putting some kind of sleep or delay function somwhere in the second "if block" - (if(klikniecia ==2)).

Any help on this topic would be appreciated.

public void onClick(View view) {
for (int i = 0; i < karta.length; i++){
    if (view == karta[i]){
        karta[i].setEnabled(false);
        klikniecia++;
        if (klikniecia == 1){
            kartaID[0]=i;
            kartaWartosc[0]=listaKart.get(i);

        }
        if (klikniecia == 2){
            kartaID[1]=i;
            kartaWartosc[1]=listaKart.get(i);

            //i think, about setting a delay here, so i can see both of the cards, regardles if the're the same or not before reverting them.

            if (czyPara()){
                karta[kartaID[0]].setEnabled(false);
                karta[kartaID[1]].setEnabled(false);
                klikniecia=0;
            }
            else{

                karta[kartaID[0]].setEnabled(true);
                karta[kartaID[0]].toggle();
                karta[kartaID[1]].setEnabled(true);
                karta[kartaID[1]].toggle();
                klikniecia=0;

            }
        }

    }

}

}

Answer 1

Instead of sleeping in the onclick, you could post a delayed message to a handler (with associated runnable) and have it update the UI. Obviously fit this into the design of your app and make it work, but the basic idea is this:

//Here's a runnable/handler combo
private Runnable mMyRunnable = new Runnable()
{
    @Override
    public void run()
    {
       //Change state here
    }
 };

Then from onClick you post a delayed message to a handler, specifying that runnable to be executed.

Handler myHandler = new Handler();
myHandler.postDelayed(mMyRunnable, 1000);//Message will be delivered in 1 second.

Depending on how complicated your game is, this might not be exactly what you want, but it should give you a start.

Answer 2

Correctly work:

final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
  @Override
  public void run() {
    //Do something after 100ms
  }
}, 100);