状态栏&上的Google即时渐变/阴影导航栏 [英] Google Now gradient/shadow on status bar & navigation bar

问题描述

我正在尝试使状态栏和导航栏的渐变与Google即时相似。

I'm trying to make a similar status bar and navigation bar gradient as Google Now.

图片参考：矩形区域如下所示

Image Reference: Rectangular area indicated as below

在Android棉花糖上尝试以下选项后，

After trying the below option on Android Marshmallow,

    <item name="android:windowTranslucentNavigation">true</item>
    <item name="android:windowTranslucentStatus">true</item>

我得到以下行为

图片参考：

有人可以建议我如何在这两个位置上获得渐变吗？

是渐变还是阴影？

Can anyone suggest me how to get gradient on both these ?
Is that a gradient or is that a shadow ?

推荐答案

它是用作渐变的稀松布。要实现此效果，您要做的第一件事就是删除状态栏和导航栏的半透明底衬。 另一个答案详细说明了如何在较低平台的设备上执行此操作；但是在Android Lollipop及更高版本上，只需将两个样式属性设置为透明即可做到这一点：

It is a gradient being used as a scrim. To achieve this effect, the first thing you have to do is remove the semi-transparent underlay for the Status and Navigation bars. Another answer details how you can do this on lower platform devices; but on Android Lollipop and higher, you can do this simply by setting two style attributes to transparent:

<resources xmlns:android="http://schemas.android.com/apk/res/android">
    <style name="Theme" parent="android:Theme.Material.Wallpaper.NoTitleBar">
        <item name="android:statusBarColor">@android:color/transparent</item>
        <item name="android:navigationBarColor">@android:color/transparent</item>
        <item name="android:windowTranslucentStatus">true</item>
        <item name="android:windowTranslucentNavigation">true</item>
    </style>
</resources>

然后，要添加稀松布，可以使用可绘制形状：

Then, to add the scrim, you can use a shape drawable:

<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <gradient android:type="linear"
        android:angle="270"
        android:centerY="0.3"
        android:startColor="#66000000"
        android:centerColor="#33000000"
        android:endColor="#00000000"/>

</shape>

然后，您可以将其设置为视图的背景在您的布局中：

Then you can just set this as the background to a View in your layout:

<View
    android:layout_width="match_parent"
    android:layout_height="72dp"
    android:background="@drawable/scrim"/>

您还可以设置 android：rotation = 180 属性可在屏幕底部使用相同的渐变。

You can also set the android:rotation="180" attribute to use the same gradient for the bottom of the screen.

这篇关于状态栏&上的Google即时渐变/阴影导航栏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！