A util for setting status bar style on Android App. It can work above API 19(KitKat 4.4).

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1. Add the dependencies to your build.gradle file, StatusBarUtil is avaiable in JCenter:

   compile 'com.jaeger.statusbaruitl:library:1.3.6'

2. Call method you need after setContentView(), such as :

   setContentView(R.layout.main_activity);
   ...
   StatusBarUtil.setColor(MainActivity.this, mColor);

3. If you use this util in a page which containing a DrawerLayout, you need add android:fitsSystemWindows="true" for DrawerLayout in your layout XML:

   <android.support.v4.widget.DrawerLayout
       xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto"
       android:id="@+id/drawer_layout"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:fitsSystemWindows="true">
   
       ...
   
   </android.support.v4.widget.DrawerLayout>

4. Set color for swipe back page

   Recommend using with bingoogolapple/BGASwipeBackLayout-Android: Android Activity 滑动返回

   StatusBarUtil.setColorForSwipeBack(Activity activity, @ColorInt int color, int statusBarAlpha)

5. All statusBarAlpha value you set should between 0 ~ 255

6. How to use in Fragment, please read UseInFragmentActivity.java

   Handle all Fragments in ViewPager as ImageViewFragment, add a fake View in your Fragment layout as StatusBar :

   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:orientation="vertical">
   
       <View
           android:id="@+id/fake_statusbar_view"
           android:layout_width="match_parent"
           android:layout_height="@dimen/statusbar_view_height"
           android:background="@color/colorPrimary"/>
   
       <TextView
           android:id="@+id/tv_title"
           android:layout_width="match_parent"
           android:layout_height="56dp"
           android:background="@color/colorPrimary"
           android:gravity="center"
           android:text="@string/app_name"
           android:textColor="@color/white"
           android:textSize="24sp"/>   
   </LinearLayout>

   The fake StatusBar View height value statusbar_view_height defined in dimens.xml

   ~ values-v19/dimens.xml
   
   <dimen name="statusbar_view_height">25dp</dimen>
   
   ~ values/dimens.xml
   
   <dimen name="statusbar_view_height">0dp</dimen>

   When you change StatusBarColor :

   mFakeStatusBar.setBackgroundColor(color);

   Then in the Activity which contains ViewPage, just invoke

   StatusBarUtil.setTranslucentForImageViewInFragment(UseInFragmentActivity.this, null);

   Please read UseInFragmentActivity.java

• Set status bar color

  StatusBarUtil.setColor(Activity activity, int color)

  

• Set status bar translucent

  StatusBarUtil.setTranslucent(Activity activity, int statusBarAlpha)

  

• Set status bar transparent

  StatusBarUtil.setTransparent(Activity activity)

  

• Set status bar color for DrawerLayout

  StatusBarUtil.setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout, int color)

  

• Set translucent status bar for using ImageView as head view page

    StatusBarUtil.setTranslucentForImageView(Activity activity, int statusBarAlpha, View needOffsetView)

  

• Use in fragment

  

• Set color for swipe back page

    StatusBarUtil.setColorForSwipeBack(Activity activity, @ColorInt int color, int statusBarAlpha)

  

• Pass statusBarAlpha param when necessary to change your status bar alpha, which is 112 by default.

Copyright 2016 Jaeger Chen

Licensed under the Apache License, Version 2.0 (the "License");	you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.