問題描述

我的布局中有一個 edittext 和一個按鈕，在我的代碼中我將 edittext 的 keyListener 設置為 null

I have an edittext and a button in my layout and in my code I'm setting keyListener of the edittext as null

    editText.setKeyListener(null);

這樣我就無法輸入我的 edittext.現在點擊我的按鈕，我應該能夠輸入我的 ediitext.我怎樣才能做到這一點.這是一個簡單的問題，但我找不到任何解決方案.任何幫助將不勝感激.

so that I cannot type into my edittext. Now on my button click I should be able to type into my ediitext. How can I do that. It's a simple problem, but I'm not able to find any solution. Any help would be much appreciated.

推薦答案

我現在可能遲到了，但是我就是這樣做的:

I'm probably late now but, this is the way I do it:

public class MyActivity extends Activity
{
    private KeyListener listener;
    private EditText editText;

    public void onCreate(...)
    {
        editText = ... // Get EditText from somewhere
        listener = editText.getKeyListener(); // Save the default KeyListener!!!
        editText.setKeyListener(null); // Disable input
    }

    // When you click your button, restore the default KeyListener
    public void buttonClickHandler(...)
    {
        editText.setKeyListener(listener);
    }
}

基本上，在調用 setKeyListener(null) 之前，首先保存 EditText 的默認 KeyListener.然后，當您單擊按鈕時，再次調用 setKeyListener，傳遞您之前保存的默認偵聽器.

Basically, you first save the EditText's default KeyListener before you call setKeyListener(null). Then, when you click your button, you call setKeyListener again, passing the default listener you previously saved.

這篇關于編輯文本鍵偵聽器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！