棒棒糖通知背景色 [英] Lollipop notification background color

问题描述

我似乎无法使通知使用默认的通知背景颜色:它仍然是灰色，应该是白色.同时，通知颜色也适用于kitkat.

I can't seem to make my notification use default notification background color: it remains gray where it should be white. At the same time, notification colors are appropriate in kitkat.

我已在此问题中实现了建议

I have implemented suggestions in this question

对我实现的东西似乎没有任何影响.值-v21只是好像不存在一样. 自然，我的目标sdk是21.我似乎找不到原因.

There doesn't seem to be any effect on what I implement. The values-v21 simply acts as if it weren't there. Naturally, my target sdk is 21. I just can't seem to find the reason for this.

使用StartForeground从服务中显示通知.我也尝试过NotificationManager.notify()，但这没什么区别.

The notification is displayed from service using StartForeground. I have also tried NotificationManager.notify(), but it makes no difference.

此外，即使我只将包装器RelativeLayout保留在xml中，通知也是灰色的:

Also, the notification is gray even if I only leave the wrapper RelativeLayout in the xml:

<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="match_parent"/>

values-v21 \ styles.xml:

values-v21\styles.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <style name="NotificationText" parent="android:TextAppearance.Material.Notification" />
  <style name="NotificationTitle" parent="android:TextAppearance.Material.Notification.Title" />
  <style name="NotificationTime" parent="android:TextAppearance.Material.Notification.Time" />
</resources>

尽管这些样式未在其他任何地方使用(例如在我的应用程序主题声明中使用).它们是刚刚定义的(在值-v21和值-v9中).

Though these styles aren't used anywhere else (like in my app theme declaration). They are just defined (in values-v21 and values-v9).

推荐答案

我似乎无法使我的通知使用默认通知 背景颜色:在应该为白色的地方仍保持灰色.

I can't seem to make my notification use default notification background color: it remains gray where it should be white.

不.至少不是在棒棒糖上.

No. At least, not on Lollipop.

如果在Notification.Builder实例上设置Notification.MediaStyle，将使用深灰色背景(#ff424242)(代替白色):

The darkish-gray background (#ff424242) will be used (in place of white) if you set Notification.MediaStyle on your Notification.Builder instance:

来自 isMediaNotification检查您是否正在使用Notification.MediaStyle.如果此检查通过，则会发生以下情况:

isMediaNotification checks if you are using Notification.MediaStyle. The following takes place if this check comes through:

if (No color was set on Notification.Builder instance using `setColor()`) {
    // R.color.notification_material_background_media_default_color 
    // is used as background
} else {
    // The color you set is used instead.
}

R.color.notification_material_background_media_default_color:

<color name="notification_material_background_media_default_color">#ff424242</color>

也许您可以通过截取通知的屏幕截图并读取其背景的argb值来确认这一点.如果问题是由MediaStyle引入的，则颜色值将与上面相同.甚至更简单的方法是在您的Builder实例上使用setColor(int)，看看是否有区别.

Perhaps you can confirm this by taking a screenshot of your notification and reading the argb value of its background. If the issue is introduced by MediaStyle, the color value will be as above. Even simpler approach would be to use setColor(int) on your Builder instance and see if that makes a difference.

这很可能是棒棒糖特有的，因为MediaStyle在<上不可用. 21.

This could very well be a Lollipop-specific thing since MediaStyle isn't available on < 21.

这篇关于棒棒糖通知背景色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！