NumberPicker rendered incorrectly in a Dialog

问题

I have a NumberPicker inside an AlertDialog instantiated like this: final NumberPicker np = new NumberPicker(PiattoActivity.this);.

The problem is, instead of being rendered like this (on the left):

it's rendered like this:

Why the dividers take up all the space given? How can I fix it?

回答1:

You are using for the picker

android:layout_width="match_parent"

You should use

    android:layout_width="wrap_content"
    android:layout_gravity="center"

来源：https://stackoverflow.com/questions/23857623/numberpicker-rendered-incorrectly-in-a-dialog