Java tutorial
//package com.java2s; /* ActivityHelper.java * See the file "LICENSE.md" for the full license governing this code. */ import android.annotation.TargetApi; import android.app.Activity; import android.os.Build; public class Main { @TargetApi(Build.VERSION_CODES.HONEYCOMB) private static boolean actionBarNonNull(Activity activity) { return activity.getActionBar() != null; } }