<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >
    <ImageView
        android:id="@+id/image01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:scaleType="fitXY"
        android:src="@drawable/aabb" />
</RelativeLayout>

public class MainActivity extends Activity {
	private ImageView image;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		image = (ImageView)findViewById(R.id.image01);        
        //设置图片的位置
		MarginLayoutParams margin9 = new MarginLayoutParams(
				image.getLayoutParams());
		margin9.setMargins(400, 10, 0, 0);//在左边距400像素，顶边距10像素的位置显示图片
		RelativeLayout.LayoutParams layoutParams9 = new RelativeLayout.LayoutParams(margin9);
		layoutParams9.height = 600;//设置图片的高度
		layoutParams9.width = 800; //设置图片的宽度
		image.setLayoutParams(layoutParams9);
	}
}