在Android中使用NumberPicker 3 [英] Using NumberPicker in Android 3

问题描述

我试图用NumberPicker小部件的Andr​​oid 3.1。我想，现在是一个标准的小工具，一个公共API的一部分，而不是一个内部小部件了。 然而，这是行不通的。我可以在里面看到一个文字编辑为0，但没有按钮，我不能把它的滚动，我不能进入一个新的数字键盘，无论是。

I'm trying to use the NumberPicker widget in Android 3.1. I figure it is now a standard widget, part of a public API, and not an internal widget anymore. However, it doesn't work. I can see a textEdit with "0" in it, but there are no buttons, I can't scroll it, and I can't enter a new number with keyboard, either.

下面是我用于测试的XML：

Here's the xml I used for testing:

    

    <NumberPicker
        android:id="@+id/numberPicker1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

因你们不工作，我的意思是这样的：它不具备显示箭头（见的截图），并在仿真器的键盘不出来。在真实设备上它，但我不能输入的文字，我只能将它抹去。

By saying doesn't work I mean this: it doesn't have arrows displayed (see the screenshot), and on emulator the keyboard doesn't show up. On a real device it does, but I can't type in the text, I can only erase it.

有什么建议？我真的很讨厌写我自己的小部件时，有一个标准。

Any suggestions? I really hate to write my own widget when there is a standard one.

推荐答案

尝试通过

<一个href="http://developer.android.com/reference/android/widget/NumberPicker.html#setMaxValue%28int%29">setMaxValue <一href="http://developer.android.com/reference/android/widget/NumberPicker.html#setMinValue%28int%29">setMinValue或<一href="http://developer.android.com/reference/android/widget/NumberPicker.html#setDisplayedValues%28java.lang.String%5B%5D%29">setDisplayedValues

也许NumberPicker不能正常工作，如果它不知道哪些值显示。

maybe the NumberPicker is not working if it doesn't know which values to display.

这篇关于在Android中使用NumberPicker 3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！