問題描述

我有用于在消息(電子郵件、短信)上輸入內容的 EditText.我希望在單擊 ActionDone 按鈕時立即發布消息.我為此使用以下代碼:

I have EditText which is used for entering contents on messages (emails, sms). I want message to be immediately posted on ActionDone button click. I use following code for this:

message.setOnEditorActionListener((textView, i, keyEvent) -> {
            switch (i) {
                case EditorInfo.IME_ACTION_DONE:
                    if (messageCanBePosted()) {
                        SoftKeyboard.hide(message);
                        postMessage();
                        return true;
                    } else {
                        return false;
                    }
                default:
                    return false;
            }
        }); 

但我也希望這個消息字段是多行的，就像在任何其他信使應用程序中一樣.我可以用這條線來實現它:

But also I want this message field to be multiline, like in any other messenger apps. I can achieve it with this line:

android:inputType="textMultiLine"

問題是在添加這一行之后 ActionDone 按鈕開始像 Enter 按鈕一樣起作用.所以我捕獲 EditorInfo.IME_ACTION_DONE 的回調永遠不會被調用.因此，每次用戶按下該按鈕時，光標都會移動到新行而不是發布消息.

The problem is that after adding this line ActionDone button starts acting like Enter button. So my callback for catching EditorInfo.IME_ACTION_DONE is never called. So each time user press that button cursor moves to new line instead of posting message.

如何同時保留 EditText 的多行行為(在多行上顯示文本的能力)和 ActionDone 按鈕?

How can I keep both multiline behavior of EditText (ability to show text on multiple lines) and ActionDone button?

推薦答案

最后，在這里搜索類似的線程后，我找到了解決方案.只需在您的 Activity/Fragment 上添加這些行:

Finally, after searching here for similar threads I have found solution. Just need to add these lines on your Activity/Fragment:

editText.setHorizontallyScrolling(false);
editText.setMaxLines(Integer.MAX_VALUE);

由于某種原因，如果您從 xml 應用完全相同的設置，它將不起作用.您應該以編程方式進行.

For some reason it doesn't work if you apply exact same setting from xml. You should do it programmatically.

還有另一種可能的解決方案 - 從 EditText 派生并手動應用 EditorInfo.IME_ACTION_DONE.但對我來說，第一個解決方案看起來更簡單.

There is also another possible solution - derive from EditText and apply EditorInfo.IME_ACTION_DONE manually. But for me first solution looks simpler.

這篇關于如何使用 ActionDone 按鈕(不帶 Enter 按鈕)實現多行 EditText的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！