setOnQueryTextFocusChangeListener vs setOnFocusChangeListener

Question

android SearchView有两个方法：setOnQueryTextFocusChangeListener和setOnFocusChangeListener。它们可以互换吗？他们有什么区别？

Answer 1

1.“setOnFocusChangeListener”（继承自android.view.View）用于整个视图。
2.“setOnQueryTextFocusChangeListener”仅用于AutoCompleteTextView。

见搜索查看的代码：

public void setOnQueryTextFocusChangeListener(OnFocusChangeListener listener) { 
    mOnQueryTextFocusChangeListener = listener; 
} 

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mQueryTextView = (SearchAutoComplete) findViewById(R.id.search_src_text); 

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mQueryTextView.setOnFocusChangeListener(new OnFocusChangeListener() { 
     public void onFocusChange(View v, boolean hasFocus) { 
      if (mOnQueryTextFocusChangeListener != null) { 
       mOnQueryTextFocusChangeListener.onFocusChange(SearchView.this, hasFocus); 
      } 
     } 
    });