Apply a theme to an activity in Android?

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You can apply a theme to any activity by including android:theme inside <activity> inside manifest file.

For example:

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

And if you want to set theme programatically then use setTheme() before calling setContentView() and super.onCreate() method inside onCreate() method.

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