Java tutorial
//package com.java2s; import android.app.Activity; import java.lang.reflect.Method; public class Main { public static void forceConvertActivityFromTranslucent(Activity activity) { try { Method method = Activity.class.getDeclaredMethod("convertFromTranslucent", null); method.setAccessible(true); method.invoke(activity, null); } catch (Throwable ignored) { } } }