在android中拖放图像

我正在开发一个单词争夺游戏,允许用户将图像移动到图像..如果图像不匹配,那么它应该回到它拖动它的原始位置.我已经写了一个示例代码来移动它图像,但这里的问题是,如果我移动一个图像,相邻的图像也开始移动..这是示例代码.

/** Touchmoveimage.java*/
     package com.examples.Touchmoveimage;
     import android.app.Activity;
     import android.content.Intent;
     import android.os.Bundle;
     import android.view.MotionEvent;
     import android.view.View;
     import android.view.View.OnTouchListener;
     import android.widget.ImageView;
     import android.widget.LinearLayout.LayoutParams;
     public class Touchmoveimage extends Activity implements OnTouchListener{
 
int windowwidth;
int windowheight;
 
   private LayoutParams layoutParams ;
   private LayoutParams layoutParams1 ;
   @Override
   public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);
 
  windowwidth = getWindowManager().getDefaultDisplay().getWidth();
  windowheight = getWindowManager().getDefaultDisplay().getHeight();
 
  ImageView ball= (ImageView)findViewById(R.id.ball);
  ball.setOnTouchListener(this);
 
  ImageView ball1 = (ImageView)findViewById(R.id.ball1);
  ball1.setOnTouchListener(this); 
 
 }   
 public boolean onTouch(View v,MotionEvent event) {
 switch(v.getId())
 {
 case R.id.ball:
   ImageView ball= (ImageView)findViewById(R.id.ball);
   layoutParams = (LayoutParams) ball.getLayoutParams();
      switch(event.getAction())
      {
      case MotionEvent.ACTION_DOWN:   
             break;
      case MotionEvent.ACTION_MOVE:
                   int x_cord = (int)event.getRawX();
                   int y_cord = (int)event.getRawY();
 
                   if(x_cord>windowwidth){x_cord=windowwidth;}
                   if(y_cord>windowheight){y_cord=windowheight;}
 
                  layoutParams.leftMargin = x_cord -25;
                 layoutParams.topMargin = y_cord - 75;
 
                 ball.setLayoutParams(layoutParams);
             break;
             default : break;
      }
 case R.id.ball1:
     ImageView ball1= (ImageView)findViewById(R.id.ball1);
       layoutParams1 = (LayoutParams) ball1.getLayoutParams();
          switch(event.getAction())
          {
          case MotionEvent.ACTION_DOWN:   
                 break;
          case MotionEvent.ACTION_MOVE:
                       int x_cord = (int)event.getRawX();
                       int y_cord = (int)event.getRawY();
 
                       if(x_cord>windowwidth){x_cord=windowwidth;}
                       if(y_cord>windowheight){y_cord=windowheight;}
 
                      layoutParams1.leftMargin = x_cord -25;
                       layoutParams1.topMargin = y_cord - 75;
 
                       ball1.setLayoutParams(layoutParams1);
                 break;          
       default : break;
        }
      }
     return true;}
 
      }

<!-- main.xml -->
 
       <?xml version="1.0" encoding="utf-8"?>
       <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:orientation="vertical"
       android:layout_width="fill_parent"
      android:layout_height="fill_parent"
     >
     <ImageView 
     android:layout_width="50sp" 
     android:layout_height="50sp" 
     android:id="@+id/ball"
    android:src="@drawable/ball">
   </ImageView>
 
   <ImageView 
    android:layout_y="30dip" 
    android:layout_x="118dip" 
    android:layout_width="50sp" 
    android:layout_height="50sp" 
    android:id="@+id/ball1"
    android:src="@drawable/ball1">
   </ImageView>
 
    </LinearLayout>

任何人都帮助我.想要解决所有可能的事情……

解决方法

你需要确保事件发生在给定的球中.即使您在图像对象外部触摸,也会声明onTouch事件.因此,您可以做的是检查已阻止的ACTION_DOWN阶段,以确保触摸位于对象的边界内.然后你可以设置一个标志来告诉系统正在移动哪个球.我会让你做编码,但希望这会让你知道该怎么做.

在android中拖放图像

解决方法

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