误差EDITTEXT setOnFocusChangeListener

Question

试图通过

mMessageBox.setOnFocusChangeListener(new OnFocusChangeListener() { 

    @Override 
    public void onFocusChange(View v, boolean hasFocus) { 
     // TODO Auto-generated method stub 

    } 
}); 

使用setOnFocusChangeListener但是当我使用的onCreate功能月食这个功能可以使误差

Multiple markers at this line 
    - The method setOnFocusChangeListener(View.OnFocusChangeListener) in the type View is not applicable for the arguments (new 
    OnFocusChangeListener(){}) 
    - OnFocusChangeListener cannot be resolved to a type 

难道是因为我在用最小的SDK的清单文件？清单文件我的SDK选项是

<uses-sdk 
    android:minSdkVersion="9" 
    android:targetSdkVersion="17" /> 

Answer 1

编译器已经说明了

new View.OnFocusChangeListener() { 
... 
} 

重点是View。