先给大家展示下效果图，如果大家感觉不错，请参考实现代码
效果图如下所示：
代码如下所示：
public class MainActivity extends Activity {
View view;
public static final int DRAG = 1;
public static final int SCALE = 2;
int mode = 1;
int height = 10, width = 10;
@Override
protected void onCreate(Bundle savedInstanceState) {
supe
