Question:
I draw like this:
Bitmap bitmap = Bitmap.createBitmap(w, w, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawARGB(1, 178, 229, 255);
Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);
p.setColor(Color.BLACK);
p.setStyle(Paint.Style.STROKE);
p.setStrokeWidth(1);
canvas.drawCircle(400, 400, 100, p);
There is a component:
ImageView iv = (ImageView) findViewById(R.id.iv);
How now to display the drawn on the screen in the ImageView component?
Answer:
To do this, there is a method ImageView#setImageBitmap(Bitmap bitmap)
. In your case:
iv.setImageBitmap(bitmap);
You also need to make sure that when creating a Bitmap
, its width is noticeable (i.e. not 0 or 1 etc), which was the cause of the problem in this particular case