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我有一个 contentObserver 来监视短信的未读计数并在未读计数 = 0 时清除通知。
问题是系统何时决定一条消息未读，因为只有当有人回复消息时通知才会被清除，在我看来这似乎有点奇怪，因为它显然是在你回复之前被阅读的