Adding touch/click event to a bitmap in android

Question

In my android game, there is a surfaceview which has 36 bitmaps drawn on it. I want to change the bitmaps when they are touched. Is there a way implement touch or click event to the bitmaps ?

Adding touch event to surfaceview and then to calculate the bitmap touched will be very tedious since there are 36 bitmaps.

Answer 1

If i correctly understood you, then I believe, you can add a click listener to a bitmap just like to a jpg image or other format.

In my example the image_star is a png file.

ImageView img = (ImageView) findViewById(R.id.imageView1);

img.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            //some code
        }
    });

The xml :

    <ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignRight="@+id/imageButton1"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="62dp"
    android:src="@drawable/image_star" 
    />

The result of this would be lower. The picture with a star in the middle is a clickable image, the ImageView img from my code. The upper button is an ImageButton.

Also there is a way to make it clickable only through the xml code, but im not sure how that is done, because i dont like that way.

Answer 2

a Bitmap itself cannot be clickable on Android. You have to draw each Bitmap to an ImageView or an ImageButton, and listen to that view's touch events.