Android onkey - dispatchKeyEvent not firing

Question

好吧，我已经在stackerflow和其他地方尝试了我能找到的所有解决方案，但最终结果一点也没有改变：触发onKey事件或dispatchKeyEvent的唯一键是虚拟键盘上的回车键，并且只有在按下两次时。我无法拦截任何其他键（在事件的顶部有一个断点，eclipse永远不会停止，除非出现上述输入）。行为在模拟器和真实设备上都是相同的。有什么想法吗？提前谢谢我的代码atm看起来像这样：

public class ChatWindow {
 @Override
public void onCreate(Bundle savedInstanceState) {
    //...
    setSendText();
            //...
}
    private void setUserInput() {
    Intent i = getIntent();
    mChatInput = (EditText) findViewById(R.id.UsrInput);
    if (i.hasExtra(INTENT_EXTRA_MESSAGE)) {
        mChatInput.setText(i.getExtras().getString(INTENT_EXTRA_MESSAGE));
    }
    mChatInput.setFocusable(true);
    mChatInput.requestFocus();
    mChatInput.setFocusableInTouchMode(true);
    mChatInput.addTextChangedListener(new TextWatcher() {
        public void  afterTextChanged (Editable s){ 
            Log.d(TAG, "afterTextChanged"); 
            if (mChatInput.getText().length() >= 1) {
                mChatInput.addTextChangedListener(this);
                //mChatInput.setOnKeyListener(this);
                //mChatInput.dispatchKeyEvent(this);
                mSendButton.setEnabled(true);       
            }
                    else 
                       mSendButton.setEnabled(false);
            } 
                    public void  beforeTextChanged  (CharSequence s, int start, int 
                    count, int after)
            { 
                    Log.d(TAG, "beforeTextChanged"); 
            } 
                    public void  onTextChanged  (CharSequence s, int start, int before, 
                    int count) 
            { 
                    Log.d(TAG, s.toString()); 
            }

         }); 
}
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
//THIS HERE IS NEVER FIRED UNLESS THE ENTER KEY IS CLICKED TWICE    
    if (event.getAction() == KeyEvent.ACTION_DOWN 
            && event.getKeyCode()==KeyEvent.KEYCODE_ENTER) {
    sendMessageIfNotNull(); 
return true;
}
    return false;
}

Answer 1

dispatchKeyEvent只有在活动具有焦点