Android仅Java中可点击的位图图像

Question

I am trying to make it so when you click this "Play" bitmap it will run other code the thing is i don't know how to check for it.

I tried drawing it as

playX = WIDTH / 2;
        playY = HEIGHT / 2;
        Bitmap playButton = BitmapFactory.decodeResource(getResources(), R.drawable.play_button);
        playWidth = playX + playButton.getScaledWidth(canvas);
        playHeight = playY + playButton.getScaledHeight(canvas);

Then a touch Event

@Override
public boolean onTouchEvent(MotionEvent event){
    if(event.getX() > playX && event.getX() < playWidth){
        if(event.getX() > playY && event.getY() < playHeight){
            System.out.println("Button Pushed");
        }
    }}

but it doesn't seem to work i dont know if there is a better way to run code when a bitmap is clicked? (I am only using the java class not xml)

Answer 1

Actually you can just use imageView to hold the Play image and set onClickListener function to have a clickable image.

Something like this:

ImageView imageView = findViewById(R.id.image_view_icon);
imageView.setImageResource(R.drawable.play_button);
imageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    System.out.println("Button Pushed");
                }
            });

Edit:

As mentioned in comments that you are using Canvas drawing, try this instead:

@Override
public boolean onTouchEvent(MotionEvent event) 
{
    int x=(int)event.getX();
    int y=(int)event.getY();
    if (drawable.getBounds().contains(x,y)  &&
        event.getAction()==MotionEvent.ACTION_DOWN) {
        System.out.println("Button Pushed");
        return true;
    }
    return false;
}

Please refer to this for details How to make a bitmap using canvas clickable?

Hope this is what you want:)