The following code shows how to Draw Canvas with Random Color .
Main Activity Java code
/* w w w .j a va 2 s .c o m*/ import android.app.Activity; import android.content.Context; import android.graphics.Canvas; import android.os.Bundle; import android.view.View; import java.util.Random; public class MainActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new CanvasView(this)); } class CanvasView extends View { Random random = new Random(); public CanvasView(Context context) { super(context); } @Override protected void onDraw(Canvas canvas) { canvas.drawRGB(random.nextInt(256), random.nextInt(256), random.nextInt(256)); } } }