How to change the theme of Android application?

Question

I am developing an Android application and I want to change the color and theme of the application. How can i do this?

Answer 1

The developer’s guide explains how to apply themes and styles.

It:

<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="#00FF00" android:typeface="monospace" android:text="@string/hello" /> 

Becomes as follows:

 <TextView style="@style/CodeFont" android:text="@string/hello" /> 

Having defined the xml theme file:

 <?xml version="1.0" encoding="utf-8"?> <resources> <style name="CodeFont" parent="@android:style/TextAppearance.Medium"> <item name="android:layout_width">fill_parent</item> <item name="android:layout_height">wrap_content</item> <item name="android:textColor">#00FF00</item> <item name="android:typeface">monospace</item> </style> </resources> 

You can also apply styles in all actions of the application:

 <application android:theme="@style/CustomTheme"> 

Or just one action:

 <activity android:theme="@android:style/Theme.Dialog"> 

Answer 2

 public class MainActivity extends Activity { @Override public void onCreate(Bundle icicle) { setTheme(); // Put the resId as the parameter super.onCreate(icicle); } }