Knowing which button was clicked in Android

Question

I am making an app which will contain 81 buttons on the same layout. They are all referred as an object I created called "Tile". Problem is those tiles are stored in an array, so I need to know which button was clicked in an int format to be able to call a tile ( tiles[??] ). I am using an onClick(View v) method. Also I have tried this:

Log.i("Tile", v.getId() + "was clicked")

The result it gave me in the logcat was a really long integer.

So how can I know which button was clicked in a number format? And what is the relationship between the casual id ( R.id.tile1 ) and this long integer, as it could help because it is already a number?

PS: I know I could use Switch to assign each id to an integer, but as they are 81, it will be a waste of time and will make the code very complicated.

Answer 1

I hope you can use tag option. You can set the tag for a view by view.setTag(1) and then on click event you can get back the tag set using view.getTag().

Answer 2

In android we can use the id of the button for getting the click event in on click listener.
Say you have, 5 Buttons: Make sure your Activity/Fragment implement OnClickListener

// in OnCreate

  Button mClickButton1 = (Button)findViewById(R.id.clickButton1);
  mClickButton1.setOnClickListener(this);
  Button mClickButton2 = (Button)findViewById(R.id.clickButton2);
  mClickButton2.setOnClickListener(this);
  Button mClickButton3 = (Button)findViewById(R.id.clickButton3);
  mClickButton3.setOnClickListener(this);
  Button mClickButton4 = (Button)findViewById(R.id.clickButton4);
  mClickButton4.setOnClickListener(this);
  Button mClickButton5 = (Button)findViewById(R.id.clickButton5);
  mClickButton5.setOnClickListener(this);</br>

//after this you will override the onclick method from OnClickListener

public void onClick(View v) {
  switch (v.getId()) {
      case  R.id.clickButton1: {
        // do something for button 1 click
        break;
      }
      case R.id.clickButton2: {
        // do something for button 2 click
        break;
      }

    //.... etc
   }
}

Answer 3

You can use button.setTag(position) to set position as tag.

And when onclick called get that tag value.

public void onclick(View v){
  int position = Integer.parseInt(v.getTag().toString());
 }