如何限制android中视图的dragzone？

在我的应用程序中,我想只在其父布局中拖动图像,但它在整个设备屏幕中拖动.我尽力实现这一目标,但没有找到任何解决方案.

我在这里添加了我的xml和代码.我搜索了这个,但无法找到解决方案.任何人都可以帮我解决这个问题？

我在图片中清楚地提到了我想要实现的目标.我想限制图像拖动那些y1和y2值.

我的xml:

RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_
    android:layout_
        android:id="@+id/mainlayout"
    tools:context=".MainActivity" >


 

       

        

      

           
       

        

     
      

我的活动:

public class MainActivity extends Activity {

RelativeLayout rlImages,Cartoon_image;

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    Cartoon_image=(RelativeLayout)findViewById(R.id.cartoon_image);
 rlImages=(RelativeLayout)findViewById(R.id.images);

  rlImages.setOnDragListener(new MyDragListener());

         Cartoon_image.setOnTouchListener(new MyTouchListener());
}

 private final class MyTouchListener implements OnTouchListener {

      public boolean onTouch(View view, MotionEvent motionEvent) {

     if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {

          ClipData data = ClipData.newPlainText("", "");
                DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
                view.startDrag(data, shadowBuilder, view, 0);
                view.setVisibility(View.INVISIBLE);
                  return true;

              } else {
                  return false;
              }

        }
      }

  class MyDragListener implements OnDragListener {

      @Override
         public boolean onDrag(View v, DragEvent event) {
          int dragAction = event.getAction();
               switch (event.getAction()) {

                  case DragEvent.ACTION_DRAG_STARTED:
                               break;

                  case DragEvent.ACTION_DRAG_ENTERED:

                      Log.e("in entered","in enter");
                               break;

                  case DragEvent.ACTION_DRAG_EXITED:

                      Log.e("in exited","in exit");

                    break;

                  case DragEvent.ACTION_DROP:
                              Float s1=event.getX();
                      Float s2=event.getY();

                    int  x=Integer.valueOf(s1.intValue());
                   int  y=Integer.valueOf(s2.intValue());

                              View view = (View) event.getLocalState(); 
                      ViewGroup owner = (ViewGroup) view.getParent(); 
                      owner.removeView(view); 
                      RelativeLayout container = (RelativeLayout) v; 
                      container.addView(view); 
                               break;

                  case DragEvent.ACTION_DRAG_ENDED:

                         Log.e("xs"+(int)event.getX(),"xs"+(int)event.getX());

                         v.setVisibility(View.VISIBLE);

                         if (dropEventNotHandled(event)) {
                             v.setVisibility(View.VISIBLE);
                                         }

                      view.setVisibility(View.VISIBLE); 

                            default:
                    break;
                  }
                  return true;
                }

                 private boolean dropEventNotHandled(DragEvent dragEvent) {

                     return !dragEvent.getResult();

                 }  


              }

}![I have added the image for better understanding,Please find it][1]

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