Android12上有没有获取当前通知栏有无通知的方法
时间: 2023-08-31 13:06:53 浏览: 62
是的,Android 12 提供了获取当前通知栏有无通知的方法。你可以使用 NotificationListenerService 类来监听通知事件,然后使用 getActiveNotifications() 方法获取当前有效的通知列表。如果列表为空,则表示当前通知栏无通知。以下是示例代码:
```
public class MyNotificationListenerService extends NotificationListenerService {
@Override
public void onNotificationPosted(StatusBarNotification sbn) {
// Notification posted
// Call getActiveNotifications() to get current active notifications
StatusBarNotification[] activeNotifications = getActiveNotifications();
if (activeNotifications == null || activeNotifications.length == 0) {
// No active notifications
} else {
// There are active notifications
}
}
@Override
public void onNotificationRemoved(StatusBarNotification sbn) {
// Notification removed
// Call getActiveNotifications() to get current active notifications
StatusBarNotification[] activeNotifications = getActiveNotifications();
if (activeNotifications == null || activeNotifications.length == 0) {
// No active notifications
} else {
// There are active notifications
}
}
}
```
请注意,您需要在 AndroidManifest.xml 文件中声明 MyNotificationListenerService 类,并将其注册为 NotificationListenerService。另外,您还需要在应用程序设置中启用通知访问权限才能访问通知服务。