How to modify the Bitmap of Android

The Bitmap of Android is similar to that of the Image of j2ec2.
If I want to read an image from the resource, and then draw a bit of information on the image, such as text.

How can I draw a picture on the screen?

In j2s, As long as Image. getGraphic () gets the Graphic object, you can think about draw and draw.

So how can we implement it in Android?

Java code

Copy codeThe Code is as follows: Bitmap img = Bitmap. createBitmap (width, height, Config. ARGB_8888 );

Canvas canvas = new Canvas ();

Canvas. setBitmap (img );

Bitmap img = Bitmap. createBitmap (width, height, Config. ARGB_8888); Canvas canvas = new Canvas (); canvas. setBitmap (img );

After the above code, you can use the draw function of canvas to modify it on Bitmap.

Then, you only need to use the onDraw parameter canvas to drawBitmap in onDraw.