Question

我有5个不同的子视图的布局，子视图是relativelayout，其中有子视图的数量，并且所有都是不同的。因此我使用scrollview作为root容器，如下所示：

<ScrollView android:layout_width="match_parent" android:layout_height="match_parent"
        android:fillViewport="true" android:scrollbars="none">

        <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent"
            android:id="@+id/home_page_scrollview_outer_layout">
         <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_alignParentLeft="true"
            android:background="@drawable/homescreen_yellow" >



            <ImageButton android:id="@+id/hp_imgbtn_listA" android:layout_width="wrap_content" android:layout_height="wrap_content"
                 android:layout_alignParentRight="true" android:src="@drawable/arrow_right">
            </ImageButton>    

            <ListView
                android:id="@+id/listA"
                android:layout_below="@id/hp_txt_listA"
                android:background="@color/home_page_bg"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">
            </ListView>
     </RelativeLayout>

    <!-- List B layout -->    

        <RelativeLayout     
            android:layout_weight="1"
            android:layout_marginRight="10dip"
            android:background="@drawable/homescreen_cyan"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content">


        </RelativeLayout>

     <!-- List C layout -->   

        <RelativeLayout     
            android:layout_weight="1"
            android:layout_marginRight="10dip"
            android:background="@drawable/homescreen_purple"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content">

    </RelativeLayout>  

     <!-- List D layout -->   

        <RelativeLayout 
            android:layout_weight="1"   
            android:layout_marginRight="10dip"
            android:background="@drawable/homescreen_turqoise"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content">

    </RelativeLayout> 

     <!-- List E layout -->   

        <RelativeLayout 
            android:layout_weight="1"   
            android:layout_marginRight="10dip"
            android:background="@drawable/homescreen_turqoise"
            android:layout_width="match_parent" 
            android:layout_height="wrap_content">

    </RelativeLayout> 
    <LinearLayout>
</ScrollView>

我想要拖放效果LinearLayout容器。任何想法如何实现LinearLayout容器的拖放？我得到了ListView的工作示例，我想对于scrollview它也应该是相同的，但是scrollview只能包含一个子视图。

Answer 1

将此添加到您的onCreate：

 yourView.setOnTouchListener(new OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub
            drag(event, v);
            return false;
        }
    });

这是在任何方法之外的Activity类。

       public void drag(MotionEvent event, View v)
        {

            RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) v.getLayoutParams();

            switch(event.getAction())
            {
               case MotionEvent.ACTION_MOVE:
               {
                 params.topMargin = (int)event.getRawY() - (v.getHeight());
                 params.leftMargin = (int)event.getRawX() - (v.getWidth()/2);
                 v.setLayoutParams(params);
                 break;
               }
               case MotionEvent.ACTION_UP:
               {
                 params.topMargin = (int)event.getRawY() - (v.getHeight());
                 params.leftMargin = (int)event.getRawX() - (v.getWidth()/2);
                 v.setLayoutParams(params);
                 break;
               }
               case MotionEvent.ACTION_DOWN:
               {
                v.setLayoutParams(params);
                break;
               }
            }

拖放linearlayout子视图

1 个答案: