Android开发中EditText的点击Enter键焦点改变处理（获取焦点和失去焦点交互变化）

 1     /**
 2      * 监听EditText的焦点，点击回车键（或者按压OK键）后，失去焦点，将焦点转到ImageView上
 3      */
 4     private void initListener() {
 5         mEtTrainId.setOnEditorActionListener(new TextView.OnEditorActionListener() {
 6             public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 7                 if (actionId == EditorInfo.IME_ACTION_SEND
 8                         || (event != null && event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) {
 9                     mEtTrainId.setFocusable(false);
10                     mllFunction.setFocusable(true);
11                     mllFunction.requestFocus();
12                     mllFunction.findFocus();
13                     return true;
14                 }
15                 return false;
16             }
17         });
18     }