How to create and display a bitmap on a view widget in Android?


Hello. I decided to write a program for Android in Java.
There was a problem, it is required on a layer (layuot) with widgets (for example, with two buttons), to draw an image that, when clicked on it, moved to the clicked place, I just can't figure out how to organize this. I dig in the direction of the view object, I have already sketched the following code:

 public void onResume(Bundle savedInstanceState){
        Bitmap b = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b);
        c.drawBitmap(b, 10, 10, null);
        view1 = (View)findViewById(;

The code works, but the image does not appear, although there is essentially nothing to appear.
Thanks in advance!


You can override the onDraw method of your view and draw to the Canvas in it. Like that:

public class SomeView extends View{
    // TODO: Дополнительный код: конструкторы и тд.

    protected void onDraw(Canvas canvas) {

        Bitmap bitmap = Bitmap.createBitmap(canvas.getWidth(), canvas.getHeight(), Config.ARGB_8888);
        Canvas over = new Canvas(bitmap);

        // TODO: рисовать на over

        canvas.drawBitmap(bitmap, 0, 0, null);
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