通知徽章未在Android O中唤醒 [英] Notification Badges not woking in Android O

问题描述

在Android O开发人员预览版中，Google引入了通知徽章，这些徽章应该显示在启动器图标上.我在开发人员频道中将模拟器与Android O配合使用.我编写了一个简单的代码来显示通知徽章，但似乎不起作用-

 通知通知=新的Notification.Builder(getApplicationContext()).chooseBadgeIcon(Notification.BADGE_ICON_SMALL).setSmallIcon(android.R.drawable.btn_star).setNumber(10).建造();mNotificationManager.notify(1，通知); 

它只是显示为正常通知.

API-

---

也尝试过NotificationChannel.不起作用-

  NotificationChannel mChannel =新的NotificationChannel("TestBadge_id"，"TestBadgeName"，NotificationManager.IMPORTANCE_HIGH);mChannel.enableLights(true);mChannel.setLightColor(Color.RED);mChannel.setShowBadge(true);mNotificationManager.createNotificationChannel(mChannel);通知通知=新Notification.Builder(getApplicationContext()).chooseBadgeIcon(Notification.BADGE_ICON_SMALL).setSmallIcon(android.R.drawable.btn_star).setNumber(10).setChannel("TestBadge_id").建造();mNotificationManager.notify(1，通知); 

解决方案

在早期的预览版本中， Android-O 的Notification徽章示例在模拟器中似乎不起作用.但是，对于最新发布的Android-O开发人员 preview-3 ，徽章会按照

长按时，如果有多个通知，则显示计数.该计数将根据活动的通知自动递增/递减.您还可以使用

确保您定位到最新的API:

  compileSdkVersion 26buildToolsVersion"26.0.0"targetSdkVersion 26 

在像素Android模拟器版本 26.1.1 中进行了测试.

With Android O developer preview google has introduced notification badges that are supposed to be shown on launcher icon. I am using emulator with Android O from dev channel.I wrote a simple code to show notification badge but it does not seem to work -

        Notification notification = new Notification.Builder(getApplicationContext())
                .chooseBadgeIcon(Notification.BADGE_ICON_SMALL)
                .setSmallIcon(android.R.drawable.btn_star)
                .setNumber(10)
                .build();

        mNotificationManager.notify(1, notification);

It just shows as normal notification.

API - https://developer.android.com/reference/android/app/Notification.Builder.html#chooseBadgeIcon(int)

Has anyone worked on this yet? Am I missing something?

Show badge is enabled in settings.

---

Tried with NotificationChannel too. Does not work -

    NotificationChannel mChannel = new NotificationChannel("TestBadge_id", "TestBadgeName", NotificationManager.IMPORTANCE_HIGH);
    mChannel.enableLights(true);
    mChannel.setLightColor(Color.RED);
    mChannel.setShowBadge(true);
    mNotificationManager.createNotificationChannel(mChannel);


    Notification notification = new Notification.Builder(getApplicationContext())
                .chooseBadgeIcon(Notification.BADGE_ICON_SMALL)
                .setSmallIcon(android.R.drawable.btn_star)
                .setNumber(10)
            .setChannel("TestBadge_id")
                .build();

        mNotificationManager.notify(1, notification);

解决方案

The Notification badge examples of Android-O doesn't seem to work in emulator in early preview releases. But with the latest release of Android-O developer preview-3 the badges are displayed properly as documented in the Notification Badges section.

To display notification badge, you need to set the setShowBadge(boolean) for a notification channel to true. By default badges will be displayed like below:

Upon long press if there is a more than a one notification the count is displayed.The count automatically increments/decrements based on the active notifications. You can also adjust the count manually by using the Notification.Builder.setNumber().

Sample showing notification count on long press of launcher icon:

Make sure you are targetting the latest API:

compileSdkVersion 26 
buildToolsVersion "26.0.0"
targetSdkVersion 26

Tested in pixel Android emulator version 26.1.1.

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