Changing button style in the whole application

Question

I'm trying to change all the TextColor of my buttons in my app to white and also trying to make it bold. But that isn't happening, I'm overwriting the android:Widget.Button I'm developing for Jelly Bean 4.1.2 What am I doing wrong?

Theme definition in manifest

android:theme="@style/spui" >

The theme where I like to

<style name="spui" parent="android:Theme.Holo.Light.DarkActionBar">
    <item name="android:buttonStyle">@style/Buttonspui</item>
</style>

The style for the button itself

  <style name="Buttonspui" parent="android:Widget.Button">
      <item name="android:background">@drawable/btn_default_holo_light</item>
      <item name="android:minHeight">48dip</item>
      <item name="android:minWidth">64dip</item>
      <item name="android:textColor">#ffffff</item>
      <item name="android:textStyle">bold</item>
  </style>

The button

 <Button
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_marginTop="15dp"
     android:text="@string/edit"
     android:id="@+id/btnEdit"
     style="@style/Buttonspui"/>

Answer 1

For styling your Button you can use this:

Go to the drawable folder and make an XML (e.g. button.xml) file called "style" which contains the following:

<?xml version="1.0" encoding="utf-8"?> 

<selector xmlns:android="http://schemas.android.com/apk/res/android">  

    <item>
         <shape>
             <gradient android:startColor="#449def" android:endColor="#2f6699" android:angle="270" />
             <stroke   android:width="1px"          android:color="#000000" />  
                <corners android:bottomLeftRadius="0dp"
                android:bottomRightRadius="0dp"
                android:topLeftRadius="8dp"
                android:topRightRadius="8dp"/>       
              <padding  android:left="10dp"  android:top="10dp" android:right="10dp" android:bottom="10dp" />
         </shape>  
   </item> 

</selector>

This is my code, you can make the necessary changes you want

Now call it in your layout XML (mainactivity.xml) like this

android:background="@drawable/button.xml"

Now to change the font color and style you can use the following which comes as part of the styles.xml in the values folder

<style name="buttonStyle" parent="@android:style/Widget.Button.Small">
    <item name="android:textColor">#FFFFFF</item>
    <item name="android:textSize">12sp</item>
    <item name="android:textStyle">bold</item>
</style>

Now call this in the layout XML (mainactivity.xml) like this

  style="@style/buttonStyle"

The final code is:

<Button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginTop="15dp"
 android:text="@string/edit"
 android:id="@+id/btnEdit"
 android:background="@drawable/button.xml"
 style="@style/buttonStyle"
/>

Hope this helps :)