Android侦听器，其EditText上的返回键不适用于所有设备 [英] Android listener for return key on EditText not working for every device

问题描述

我想用返回键的侦听器初始化一个compose字段.在文档中说actionId将是EditorInfo.IME_NULL，如果由于按下回车键而被调用的话.我比较了actionId的值.它还说，如果由返回键触发，我们会收到KeyEvent对象，因此我将对其进行测试以测试KeyEvent.ACTION_UP，该值对应于释放键所对应的值. 当我运行代码时，它对于运行KitKat的设备正常工作，但是在其他运行Lollilop的设备中，它不消耗返回键，并且不调用onEditorAction().它只是插入一个新行.这是代码:

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);
}

推荐答案

尝试一下，这是我使用keyEvent来完成的方法:

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;
        }
    });

希望这会有所帮助；)

更新

确保在您的xml中您的editText具有android:singleLine="true"字段.

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

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