EditText上的全选（）不选择文本，而不是光标移动到位置0 [英] EditText's selectAll() does not select the text, instead cursor is moved to position 0

问题描述

我的情况是：我有一个的EditText ，并在其下我有一个按钮，所谓的全选。它的目的是让用户选择全部由pressing它的文本。结果
当点击该按钮时，我调用全选（）在的EditText 不过的，而不是选择所有文字，在一些例（通常，当光标已经定位在文本内的某处），将光标移动到位置 0 （文开始）和文本仍然未选中。然后在第二个按钮，点击会选择所有。当然，它应该发生在第一次点击。搜索结果
从这个问题：<一href=\"http://stackoverflow.com/questions/11793635/android-edittext-selectall-doesnt-works-if-one-taps-on-the-same-field-in-andr\">Android EditText上全选（）不工作，如果一个在Android中4.x的同一领域水龙头只有看来，这是在Android 4.0及以上的错误。 （发现在谷歌问题跟踪不提）。结果
有谁知道一个方法来解决这个问题？看来，万阿英，蒋达清也是其他选择方法，而不仅仅是全选（）搜索结果
（PS这个问题是那种重复我上面提到的问题，但我打开了另一个问题，因为这个问题的作者是满意，并选择了部分答案（设定的android：selectAllOnFocus =真 ），而在我的情况和场景中它并不能帮助我，没有解决不了的问题。搜索结果
谢谢你。

My situation is: I have a EditText, and under it I have a button, called "select all". It's purpose is to let the user select all the text by pressing it.
When the button is clicked, I invoke selectAll() on the EditText, but instead of selecting all text, in some cases (generally, when the cursor is already positioned within the text somewhere), the cursor is moved to position 0 (start of text) and text remains unselected. Second click on the button will then select all. But of course it should happen on first click.

From this issue: Android EditText selectAll() doesn't works if one taps on the same field in android 4.x only it seems that this is a bug in android 4.0 and above. (Found no mention in Google issue tracker).
Does anyone know about a way to overcome this problem? It seems that the probelm is also in other selection methods and not only selectAll().

(p.s. This question is sort of duplicate of the issue I mentioned above. But I opened another question, because the author of that issue was satisfied and selected a partial answer (of setting android:selectAllOnFocus="true"), while in my case and scenario it does not help me and does not solve the problem.

Thanks.

推荐答案

我有一个类似的问题。我解决它（在C＃中使用Xamarin，但相应的Java将工作）具有以下code：

I was having a similar issue. I solved it (using Xamarin in C#, but the equivalent Java will work) with the following code:

private void InitFocus()
{
    Java.Lang.Runnable rable = new Java.Lang.Runnable(()=> 
    {
        EditText maleCount = FindViewById<EditText>(Resource.Id.txtMaleCount);
        maleCount.RequestFocus();
        maleCount.SelectAll();
    });
    new Handler().Post(rable);
}

我有2个控制器：一个是下拉菜单，让您选择一个鸡笼，然后为一周的每一天一组按钮。无论何时更改一周中的一天或鸡舍，我想将焦点设置在 txtMaleCount 的EditText 然后我想在选择了框中的值（因为它是一个数字，他们是presumably要取代它）。

I have 2 controls: One is a dropdown that lets you select a chicken house and then a set of buttons for each day of the week. Whenever you change the day of week or the chicken house, I want to set focus in the txtMaleCount EditText and then I want the value in that box selected (since it's a number and they're presumably going to replace it).

显然，非直观的部分是需要发表它。直接这样做（在UI线程）似乎没有任何效果。

Clearly, the non-intuitive part was the need to Post it. Doing it directly (on the UI thread) didn't seem to have any effect.

这篇关于EditText上的全选（）不选择文本，而不是光标移动到位置0的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！