public class MainActivity extends Activity implements OnTouchListener {private int x;//繪畫開始的橫坐標 private int y;//繪畫開始的縱坐標 private int width = 180;//繪畫的寬度 private int height = 40;//繪畫的高度 private Bitmap bitmap;//生成的位圖 // private MyView myView;//繪畫選擇區(qū)域 private ImageView image1;private ImageView image2;@Override public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);image1 = (ImageView) findViewById(R.id.image1);image2 = (ImageView) findViewById(R.id.image2);image1.setOnTouchListener(this);}@Override public boolean onTouch(View v, MotionEvent event) {try {switch (event.getAction()) {case MotionEvent.ACTION_DOWN: {x = (int) event.getX();y = (int) event.getY();moveViewWithFinger(image2,x,y);image2.setVisibility(View.VISIBLE);image2.setImageBitmap(getBitmap(this));break;}case MotionEvent.ACTION_MOVE: {x = (int) event.getX();y = (int) event.getY();image2.setImageBitmap(getBitmap(this));moveViewWithFinger(image2,x,y);break;}case MotionEvent.ACTION_UP: {image2.setImageBitmap(null);image2.setVisibility(View.GONE);break;}default: {image2.setImageBitmap(null);image2.setVisibility(View.GONE);break;}}}catch (Exception e){e.getStackTrace();}return true;}private void moveViewWithFinger(View view, float rawX, float rawY) {RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) view.getLayoutParams();params.leftMargin = (int) rawX-250;params.topMargin = (int) rawY - 250;view.setLayoutParams(params);}private Bitmap getBitmap(Activity activity) {View view = activity.getWindow().getDecorView();view.setDrawingCacheEnabled(true);view.buildDrawingCache();bitmap = view.getDrawingCache();bitmap = Bitmap.createBitmap(bitmap, x, y, width, height);view.setDrawingCacheEnabled(false);return bitmap;} } /// main.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"><ImageView android:id="@+id/image1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/test" /><ImageView android:id="@+id/image2" android:layout_width="180dp" android:layout_height="45dp" android:visibility="gone" /></RelativeLayout>源碼 ： http://download.csdn.net/detail/icesoul1127/9638232

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