Draw a bitmap on View

It's a simple example to draw a bitmap on screen in View. The content view is set to a View, and the drawing is achieved in onDraw method.



To make it simple, a bitmap of 320x480 (the size of HVGA) was prepared. It's in /res/drawable/ folder, and will be loaded using the following codes:

Bitmap myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.googlelogo320x480);

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

package com.exercise.AndroidPaint;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.os.Bundle;
import android.view.View;

public class AndroidPaint extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      //setContentView(R.layout.main);
      setContentView(new myView(this));
  }

  private class myView extends View{

 public myView(Context context) {
  super(context);
  // TODO Auto-generated constructor stub
 }

 @Override
 protected void onDraw(Canvas canvas) {
  // TODO Auto-generated method stub
  Bitmap myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.googlelogo320x480);
          canvas.drawBitmap(myBitmap, 0, 0, null);
 }
  }
}

Download the files.

Next: Draw something on a Canvas.