沉浸式状态栏

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_set_menu_color);

//透明状态栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
//透明导航栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
}

布局文件中注意设置两个属性（android:clipToPadding="true" android:fitsSystemWindows="true"），否则内容会进入状态栏中：
<?xml version="1.0" encoding="utf-8"?>
<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="wrap_content"
android:clipToPadding="true"
android:fitsSystemWindows="true"
android:background="@android:color/holo_blue_light"
android:gravity="center"
tools:context="demo.cd.com.insertmenustatus.SetMenuColorActivity">

<LinearLayout
android:id="@+id/bannerView"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@android:color/holo_blue_bright"
android:gravity="center">

<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="主题"
android:gravity="center"
android:textColor="@android:color/white" />
</LinearLayout>