主题中所有按钮上的圆角 - 如何覆盖？

Question

I have been looking around for an easy way to make all buttons in my entire app have rounded corners.

I haven't succeeded, so I thought I'd ask =)

My AndroidManifest.xml:

<application android:icon="@drawable/icon" android:label="@string/app_name" android:theme="@style/BlackTheme" android:alwaysRetainTaskState="true" android:name="MyApplication">

My styles.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="ButtonHeader" parent="@android:style/Widget.Button">
        <item name="android:textSize">18dip</item>
        <item name="android:minWidth">70dip</item>
        <item name="android:minHeight">20dip</item>
        <item name="android:maxHeight">30dip</item>
    </style>

    <style name="JobViewHeader" parent="@android:style/TextAppearance.Small">
        <item name="android:textStyle">bold</item>
        <item name="android:textColor">#FFFFFF</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

    <style name="BlackTheme" parent="@android:style/Theme.Black">
        <item name="android:button">@drawable/button_rounded</item>
    </style>  

    <style name="DialogTheme" parent="@android:style/Theme.Dialog">
    </style>  
</resources>

My button_rounded.xml (in drawables):

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
    <corners android:radius="10dp" /> 
</shape> 

Answer 1

As I understand, you are trying to specify some abstract drawable ( Shape Drawable in your case) as a button background, which will be combined later with any other drawable set as a button background. Unfortunately, this is impossible. If you want a background with rounded corners, you need to provide drawable resource which does contain rounded corners, no matter what type of drawable it is: Shape Drawable, nine-patch, etc.

However you may consider subclassing the Button widget and overriding its draw method, where you can manipulate button's look as you wish.