在Android开发中如何移除EditText上的输入焦点

　　当我们创建一个带EditText 或 AutoCompleteTextView的视图时，在加载视图时总是会把输入的焦点自动移动到第一个输入框。如下图所示：

　　下面是mail.xml布局文件：

   
   
   
   

    
    
    
       
    
    
    
    1
    
    
    
    . 
    
    
    
    
    
    
    
     
   
    
    
    
    2
    
    
    
    . 
    
    
    
    <
    
    
    
    linearlayout android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    fill_parent
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    fill_parent
    
    
    
    "
    
    
    
     android:orientation
    
    
    
    =
    
    
    
    "
    
    
    
    vertical
    
    
    
    "
    
    
    
     xmlns:android
    
    
    
    =
    
    
    
    "
    
    
    
    http://schemas.android.com/apk/res/android
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    3
    
    
    
    .         
    
    
    
    <
    
    
    
    button android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/Button01
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    "
    
    
    
    @string/button_text
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    4
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    button> 
    
    
    
    

    
    
    
       
    
    
    
    5
    
    
    
    .         
    
    
    
    <
    
    
    
    edittext android:hint
    
    
    
    =
    
    
    
    "
    
    
    
    @string/hint
    
    
    
    "
    
    
    
     android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/EditText01
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    ""
    
    
    
    >
    
    
    
     
   
    
    
    
    6
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    edittext> 
    
    
    
    

    
    
    
       
    
    
    
    7
    
    
    
    .         
    
    
    
    <
    
    
    
    button android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/Button02
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    "
    
    
    
    @string/button_text
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    8
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    button> 
    
    
    
    

    
    
    
       
    
    
    
    9
    
    
    
    . 
    
    
    
    <
    
    
    
    /
    
    
    
    linearlayout> 
    
    
    
    

    
    
    
      
    
    
    
    10
    
    
    
    .  
   
   
   
   

　　我们如何才能把焦点从EditText上移除呢？最简单的方法是创建一个不可见的（invisible）LinearLayout，LinearLayout将会把焦点从EditText上移走。

　　我们修改mail.xml布局文件，在EditText之前增加一个LinearLayout ，如下所示：

   
   
   
   

    
    
    
       
    
    
    
    1
    
    
    
    . 
    
    
    
    
    
    
    
     
   
    
    
    
    2
    
    
    
    . 
    
    
    
    <
    
    
    
    linearlayout android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    fill_parent
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    fill_parent
    
    
    
    "
    
    
    
     android:orientation
    
    
    
    =
    
    
    
    "
    
    
    
    vertical
    
    
    
    "
    
    
    
     xmlns:android
    
    
    
    =
    
    
    
    "
    
    
    
    http://schemas.android.com/apk/res/android
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    3
    
    
    
    .         
    
    
    
    <
    
    
    
    button android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/Button01
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    "
    
    
    
    @string/button_text
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    4
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    button> 
    
    
    
    

    
    
    
       
    
    
    
    5
    
    
    
    . 
    
    
    
    <
    
    
    
    linearlayout android:focusable
    
    
    
    =
    
    
    
    "
    
    
    
    true
    
    
    
    "
    
    
    
     android:focusableintouchmode
    
    
    
    =
    
    
    
    "
    
    
    
    true
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    0px
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    0px
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    6
    
    
    
    .         
    
    
    
    <
    
    
    
    edittext android:hint
    
    
    
    =
    
    
    
    "
    
    
    
    @string/hint
    
    
    
    "
    
    
    
     android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/EditText01
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    ""
    
    
    
    >
    
    
    
     
   
    
    
    
    7
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    edittext> 
    
    
    
    

    
    
    
       
    
    
    
    8
    
    
    
    .         
    
    
    
    <
    
    
    
    button android:id
    
    
    
    =
    
    
    
    "
    
    
    
    @+id/Button02
    
    
    
    "
    
    
    
     android:layout_height
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:layout_width
    
    
    
    =
    
    
    
    "
    
    
    
    wrap_content
    
    
    
    "
    
    
    
     android:text
    
    
    
    =
    
    
    
    "
    
    
    
    @string/button_text
    
    
    
    "
    
    
    
    >
    
    
    
     
   
    
    
    
    9
    
    
    
    .         
    
    
    
    <
    
    
    
    /
    
    
    
    button> 
    
    
    
    

    
    
    
      
    
    
    
    10
    
    
    
    . 
    
    
    
    <
    
    
    
    /
    
    
    
    linearlayout> 
    
    
    
    

    
    
    
      
    
    
    
    11
    
    
    
    . 
    
    
    
    <
    
    
    
    /
    
    
    
    linearlayout> 
   
   
   
   

　　最终效果如下所示：

　　不需要任何代码就把焦点移除了，是不是最简单的解决方案？

　　希望本文对您有所帮助！