Android listener for return key on EditText not wo

问题:

I want to initialize a compose field with a listener for the return key. In the documentation it says that actionId will be EditorInfo.IME_NULL if it is being called due to the enter key being pressed. I compared actionId for that value. It also says that if triggered by a returnkey we receive KeyEvent object so i test it for KeyEvent.ACTION_UP which is the value corresponding for the release of a key. When i run the code it works for fine for a device running KitKat but in the other running Lollilop it doesn't consume return key and it doesn't call onEditorAction(). It just inserts a new line. Here's the code:

public void setupChat() {
    Log.i(LOG_TAG, "setupChat()");
    oETConversation.setOnEditorActionListener(new TextView.OnEditorActionListener() {
        @Override
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
            Log.i(LOG_TAG, "onEditorAction()");
            if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) {
                String s = v.getText().toString();
                sendMessage(s);
            }
            return true;
        }
    });
}

public void sendMessage(String s) {
    Log.i(LOG_TAG, "sendMessage()");
    Log.i(LOG_TAG, s);
}

回答1:

Try this, this is how I do it using keyEvent instead:

oETConversation.setOnKeyListener(new View.OnKeyListener() {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_ENTER) {
                String s = oETConversation.getText().toString();
                sendMessage(s);
                return true;
            }
            return false;
        }
    });

Hope this helps;)

UPDATE

Make sure in your xml your editText has android:singleLine="true" field.