在开发自定义通知消息的时候，有个需求是点击通知消息的关闭按钮实现隐藏消息通知。设置通知PendingIntent的代码如下：
val closePendingIntent: PendingIntent = PendingIntent.getBroadcast(
context,
0,
Intent("demo.notice.msg"),
PendingIntent.FLAG_IMMUTABLE
)
注册广播
<receiver android:name=".NoticeBroadcastReceiver" android:exported="false">
<intent-filter>
<action android:name="demo.notice.msg"/>
</intent-filter>
</receiver>
广播接收
class NoticeBroadcastReceiver: BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
(context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager).cancel(100)
}
}
发现在Android 7.0、Android 10上面NoticeBroadcastReceiver可以正常接收广播，并且正常取消通知消息。而在Android 12的小米系统上面运行NoticeBroadcastReceiver没有接收到消息事件。后面多次测试排查发现，设置PendingIntent的Intent需要指定ComponentName，随后PendingIntent代码改为即可：
val closePendingIntent: PendingIntent = PendingIntent.getBroadcast(
context,
0,
Intent(context, NoticeBroadcastReceiver::class.java).apply {
action = "demo.notice.msg"
},
PendingIntent.FLAG_IMMUTABLE
)
适配Android 13通知
清单文件加入通知权限即可
<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
