定位API 28(Android 9)时,带有fitsSystemWindows的Android半透明状态栏始终为灰色

时间:2018-08-16 19:35:20

标签: android statusbar

从API 21开始,当样式包含<item name="android:windowTranslucentStatus">true</item>并且布局包含android:fitsSystemWindows="true"时,状态栏变为半透明,并且抽屉布局(如导航抽屉)在状态栏后面滑动。在定位API 28之前,状态栏的基础颜色将由colorPrimaryDarkandroid:statusBarColor设置。现在这些值将被忽略。

这个问题实际上出现在com.android.support:design:27.1.0中,但是在我当时认为它是一个错误并继续使用com.android.support:design:27.0.2。保留到API 28后,这似乎是未记录的设计更改。因此,在API> = 28上使用fitsSystemWindows时如何设置状态栏的背景色?

1 个答案:

答案 0 :(得分:3)

事实证明,此问题的答案是,基本状态栏颜色现在由设置为fitsSystemWindows的布局项目的背景设置。然后通过半透明状态栏稀松布使该颜色变暗。因此,就我而言,fitsSystemWindows是在CoordinatorLayout内的DrawerLayout上指定的。在android:background上设置CoordinatorLayout可以控制基本状态栏的颜色。

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

    <!-- `android:fitsSystemWindows="true"` moves `root_coordinatorlayout` below the system status bar.
     When it is specified, the theme should include `<item name="android:windowTranslucentStatus">true</item>`.
     `android:background` sets the background color of the status bar, which is then overlaid with a scrim. -->
    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/root_coordinatorlayout"
        xmlns:tools="http://schemas.android.com/tools"
        tools:context="com.my.acivity"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:fitsSystemWindows="true"
        android:background="#FF64DD17" >

        <!-- The purpose of the `LinearLayout` is to place the included `main_webview` below `app_bar_layout`. -->
        <LinearLayout
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:orientation="vertical" >

            <!-- The `AppBarLayout` theme has to be defined here because the activity uses a `NoActionBar` theme. -->
            <android.support.design.widget.AppBarLayout
                android:id="@+id/app_bar_layout"
                android:layout_height="wrap_content"
                android:layout_width="match_parent"
                android:theme="@style/AppBarLight" >

                <android.support.v7.widget.Toolbar
                    android:id="@+id/app_bar"
                    android:layout_height="wrap_content"
                    android:layout_width="match_parent" />
            </android.support.design.widget.AppBarLayout>

            <!-- Include the main views. -->
            <include layout="@layout/main_views" />
        </LinearLayout>
    </android.support.design.widget.CoordinatorLayout>

    <!-- The left drawer. -->
    <android.support.design.widget.NavigationView
        android:id="@+id/navigationview"
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        android:layout_gravity="start"
        app:headerLayout="@layout/navigation_header"
        app:menu="@menu/webview_navigation_menu"
        app:itemIconTint="?attr/navigationIconTintColor" />

    <!-- Include the right drawer. -->
    <include layout="@layout/right_drawer" />

稀松布需要#FF64DD17并将其变暗为#FF3C850E

Green status bar

打开抽屉时,附加的稀松布会覆盖抽屉后面的整个应用程序,从而使状态栏进一步变暗至#FF183405

Navigation drawer open