setTheme(Theme) is method of an activity and can be applied to an activity 
only before it is created if you want to change the Theme you need to 
recreate the activity.

On Sunday, June 6, 2010 12:17:37 PM UTC+5:30, Sudeep wrote:
>
> Hi All,
>  
> This is my  themes.xml file
>  
> <
> resources> 
>
> <style name=*"Theme.Blue"* parent=*"android:Theme"*> 
>
> <item name=*"android:windowBackground"*>*@drawable*/bodyimg_blue</item> 
>
> <item name=*"android:colorBackground"*>@color/*royalblue*</item> 
>
> <item name=*"android:textColor"*>@color/*midnightblue*</item> 
>
> <item name=*"android:textViewStyle"*>@style/TextViewBlue</item> 
>
> </style> 
> <resources>
> This is main activity code snippet
>
> *public* *void* onCreate(Bundle savedInstanceState) { 
>
> *super*.onCreate(savedInstanceState); 
>
> setTheme(R.style.Theme_Blue); 
>
> setContentView(R.layout.
> *main_screen*); 
> ... 
> The background image is not getting loaded but the text color and 
> textViewStyle got changed.
> The background image remains the defalult one -blank screen.
> If I am setting the theme in android manifest file then it works properly.
> Can anybody tell me the reason for this?
>
> Warm Regards,
> Sudeep
>

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