Android: 仿Launcher Workspace左右滑動控件

修改Launcher的Workspace，去掉Drag相關的操作，精簡為一個支持左右滑動的控件

每屏中可以自由放置layout

主要的問題是對

    @Override
    public boolean dispathTouchEvent(MotionEvent ev) {}

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {}

    @Override
    public boolean onTouchEvent(MotionEvent ev) {}

的理解，不然不好控制touch事件

代碼貼上，其實沒啥參考價值:

1. <?xml version="1.0" encoding="utf-8"?>  
2.   
3.       
4.     <com.mylauncher.Workspace      
5.     xmlns:Android="http://schemas.android.com/apk/res/android"  
6.     xmlns:launcher="http://schemas.android.com/apk/res/com.mylauncher"      
7.         android:id="@+id/workspace"  
8.         android:layout_width="match_parent"  
9.         android:layout_height="match_parent"  
10.         android:scrollbars="horizontal"  
11.         android:fadeScrollbars="true"  
12.         launcher:defaultScreen="0">  
13.           
14.         <com.mylauncher.CellLayout   android:background="#ff0000ff"  
15.             android:id="@+id/cell1"  
16.             android:layout_width="match_parent"  
17.             android:layout_height="match_parent"      
18.             android:orientation="vertical"        
19.             >  
20.             <TextView      
21.             android:layout_width="fill_parent"  
22.             android:layout_height="wrap_content"  
23.             android:textSize="30sp"                       
24.             android:textStyle="bold"              
25.             android:text="@string/screen1" />  
26.             <Button        
27.             android:layout_width="fill_parent"  
28.             android:layout_height="wrap_content"  
29.             android:textSize="30sp"                       
30.             android:textStyle="bold"              
31.             android:text="@string/screen1" />              
32.               
33.         </com.mylauncher.CellLayout>  
34.           
35.         <com.mylauncher.CellLayout   android:background="#ffff0000"  
36.             android:id="@+id/cell2"  
37.             android:layout_width="match_parent"  
38.             android:layout_height="match_parent"    
39.             android:orientation="vertical"            
40.             >  
41.             <TextView      
42.             android:layout_width="fill_parent"  
43.             android:layout_height="wrap_content"  
44.             android:textSize="30sp"                       
45.             android:textStyle="bold"              
46.             android:text="@string/screen2" />       
47.             <Button         
48.             android:layout_width="fill_parent"  
49.             android:layout_height="wrap_content"  
50.             android:textSize="30sp"                       
51.             android:textStyle="bold"              
52.             android:text="@string/screen2" />                         
53.         </com.mylauncher.CellLayout>      
54.           
55.         <com.mylauncher.CellLayout   android:background="#ff00ff00"  
56.             android:id="@+id/cell3"  
57.             android:layout_width="match_parent"  
58.             android:layout_height="match_parent"     
59.             android:orientation="vertical"        
60.             >  
61.             <TextView      
62.             android:layout_width="fill_parent"  
63.             android:layout_height="wrap_content"  
64.             android:textSize="30sp"                       
65.             android:textStyle="bold"              
66.             android:text="@string/screen3" />        
67.             <Button         
68.             android:layout_width="fill_parent"  
69.             android:layout_height="wrap_content"  
70.             android:textSize="30sp"                       
71.             android:textStyle="bold"              
72.             android:text="@string/screen3" />                    
73.         </com.mylauncher.CellLayout>                
74.           
75.     </com.mylauncher.Workspace>