setOnQueryTextFocusChangeListener vs setOnFocusChangeListener

Question

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

Answer 1

1＆＃34; setOnFocusChangeListener＆＃34; （继承自android.view.View）是整个视图 2＆＃34; setOnQueryTextFocusChangeListener＆＃34;仅适用于AutoCompleteTextView。

请参阅SearchView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);
            }
        }
    });