import android.app.Activity;

 import android.graphics.Bitmap;

 import android.graphics.BitmapFactory;

 import android.graphics.Canvas;

 import android.graphics.Matrix;

 import android.graphics.Paint;

 import android.os.Bundle;

 import android.widget.ImageView;

 public class MainActivity extends Activity {

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         Bitmap bmSrc = BitmapFactory.decodeFile("sdcard/img15.jpg");

         // 生产一份与原图宽高和配置一模一样的白纸

         Bitmap bmCopy = Bitmap.createBitmap(bmSrc.getWidth(),

                 bmSrc.getHeight(), bmSrc.getConfig());

         // 设置画笔

         Paint paint = new Paint();

         // 打开画板，并把白纸铺在画板上

         Canvas canvas = new Canvas(bmCopy);

         // 把原图绘画到副本上

         canvas.drawBitmap(bmSrc, new Matrix(), paint);

         // 设置显示原图和副本

         ImageView iv_src = (ImageView) findViewById(R.id.iv_src);

         ImageView iv_copy = (ImageView) findViewById(R.id.iv_copy);

         iv_src.setImageBitmap(bmSrc);

         iv_copy.setImageBitmap(bmCopy);

     }

 }