Android having NumericUpDown Button?

心已入冬 提交于 2019-11-29 09:22:14
Dave Webb

The view you have on your screenshot looks likes com.android.iternal.widget.NumberPicker which is used by some of the standard components, such as DatePicker.

Unfortunately, this component is not meant for public use - hence the internal in the package name. There are some tricks you can use to get to it, but I would recommend against accessing it directly. As this is "private" code the API maintainers aren't going to worry about external compatibility in different versions of Android, so even if you can get it working now it will probably cause your problems in future.

Your best bet is to get the code for NumberPicker from the public Android source repository and cut and paste it in to your own class to create your Number Picker widget.

Or if you didn't want to do this yourself, the work to pull NumberPicker from the source has already been done and posted on a website for you to download and use.

Caner

This is an old question, but I will post this in case someone else finds this post:

As mentioned, NumberPicker is internal and not for public use. The safest way to use it to copy the source code from android source. Someone already did that and post it here:

http://www.quietlycoding.com/?p=5

Also see this for a discussion on same topic.

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

Searching for android number picker came up with a few good results, particularly this thread which suggests that com.android.internal.widget.NumberPicker is what's used by the date picker widget. The thread has a few suggestions to go about using/emulating it.

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