Question

我正在尝试将触发器设置为每天早上5点，以准备好进行USER_PRESENT广播的电话，但是一旦服务启动，该触发器就会关闭。服务（PAService）通过主电源上的开关关闭和打开使用 stopService 和 startService 进行活动。此代码在模拟器，而不是实际的Android手机。

public partial class Job {
    [JsonProperty("object")]
    public string Object { get; set; }

    [JsonProperty("entry")]
    public Entry[] Entry { get; set; }

    [JsonProperty("resource_url")]
    public Uri ResourceUrl { get; set; }
}

public partial class Entry {
    [JsonProperty("uuid")]
    public string Uuid { get; set; }

    [JsonProperty("changed_fields")]
    public string[] ChangedFields { get; set; }

    [JsonProperty("time")]
    public DateTimeOffset Time { get; set; }
}

}

Answer 1

manager.setRepeating(AlarmManager.RTC_WAKEUP,
            calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, // for repeating
            // in every 24
            // hours
            pendingIntent);

如果2nd parameter过去，则calendar.getTimeInMillis()的触发时间将立即触发警报。所以发生的事情是您可能在晚上7点打开应用程序。您希望闹钟第二天早上5点响起，但是您的 calendar.getTimeInMillis()将在当天早上5点。因此，您需要为此添加检查：

Calendar calendar = Calendar.getInstance();
// calendar.setTimeInMillis(System.currentTimeMillis()); // YOU DON'T NEED THIS LINE
calendar.set(Calendar.HOUR_OF_DAY, 5);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);

Calendar current = Calendar.getInstance();

int curTime = current.getTimeInMillis();
int alarmTime = calendar.getTimeInMillis();

if (alarmTime >= curTime){
   manager.setRepeating(AlarmManager.RTC_WAKEUP,
        alarmTime, AlarmManager.INTERVAL_DAY, // for repeating
        // in every 24
        // hours
        pendingIntent);
}else{
   calendar.add(Calendar.DAY_OF_MONTH, 1);
   int alarmTime = calendar.getTimeInMillis();
   manager.setRepeating(AlarmManager.RTC_WAKEUP,
        alarmTime, AlarmManager.INTERVAL_DAY, // for repeating
        // in every 24
        // hours
        pendingIntent);
}

服务启动后而非设定时间触发警报

1 个答案: