Question

I have applied an theme for my app by defining the android:theme in my AndroidManifest.xml like following:

AndroidManifest.xml:

<application
        android:label="@string/app_name"
        android:theme="@style/Theme.MyTheme" >
        <activity
            android:name=".MainActivity"
            ...
            ...
        </activity>
        ...
</application>

in themes.xml:

<style name="Theme.MyTheme" parent="@android:style/Theme.Holo">
   <item name="android:windowBackground">@drawable/blue_bg_img</item>
</style>

As you can see above in MyTheme, I have applied an blue color image as my app windowBackground. So, every view element in my app will have this blue color image background.

But I have one ImageView element which I do not want to have this blue windowBackground, instead, I would like to have a transparent background for it. I tried to:

myImageView.setBackgroundColor(Color.TRANSPARENT);

But the blue image defined in my app theme is still showing. Seems I can not override the app theme I have defined. How can I override my theme for one View element in my app ???

Answer 1

Finally, I managed to solve this problem myself by decreasing the height of my ImageView element until the blue background is not visible. If other people have other solutions, I am very pleased to see.