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how to access UI elements in parent activity from fragment

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http://stackoverflow.com – parent activity layout <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".LockerCodeActivity" > <LinearLayout android:id="@+id/fragment_container" android:layout_width="match_parent" android:layout_height="match_parent"> </LinearLayout> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_ce (HowTos)