setOnEditorActionListener 方法语法混乱

Question

我在其中一个网站上学习 android 时遇到了以下程序：

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ActionBar actionBar = getActionBar();
// add the custom view to the action bar
actionBar.setCustomView(R.layout.actionbar_view);
EditText search = (EditText) actionBar.getCustomView().findViewById(R.id.searchfield);
search.setOnEditorActionListener(new OnEditorActionListener() {

  @Override
  public boolean onEditorAction(TextView v, int actionId,
      KeyEvent event) {
    Toast.makeText(MainActivity.this, "Search triggered",
        Toast.LENGTH_LONG).show();
    return false;
  }
});
actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM
    | ActionBar.DISPLAY_SHOW_HOME);
}

} 

此处监听器附加到 EditText 的自定义视图，它基本上是一个搜索项。有人可以解释一下语法：

  setOnEditorActionListener(new OnEditorActionListener() {

  @Override
  public boolean onEditorAction(TextView v, int actionId,
      KeyEvent event) {
    Toast.makeText(MainActivity.this, "Search triggered",
        Toast.LENGTH_LONG).show();
    return false;
  }
})

据我了解，函数的参数里面有函数的定义"setOnEditorActionListener"。有人可以帮助我理解是正确还是错误吗？

Answer 1

使用 addTextChangedListener 代替 setOnEditorActionListener。

 search.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });