Question

我正在构建一个警报应用程序，它将具有确切的重复警报。

看到Repeating的Android如何仅提供possible delay of 75% of chosen interval的Inexact警报，我尝试制作Exact警报，该警报在触发时会再次自行设置。只要我的屏幕一直处于打开状态，这种类型的警报就可以完美发挥作用。但是，一旦进入睡眠状态，该警报第一次便会正常工作，但是以编程方式设置的第二个警报会延迟触发，就像我使用Inexact方法一样。

作为一种替代解决方案，我正在考虑制作一个InexactRepeating警报，该警报将每分钟触发一次，以检查是否是“时间”。这样，我的警报将有2分钟的不精确间隔，这是可以接受的。但是我不确定会给手机的电池带来多少负担。

有创意吗？

这是我对Exact警报的尝试：

AlarmManager.java

 public static void setAlarm(Context context){
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);

        //SET BROADCAST RECEIVER WHICH WILL BE THE ONE TO LISTEN FOR THE ALARM SIGNAL
        Intent intent = new Intent(context, AlarmTriggerBroadcastReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 22222, intent, PendingIntent.FLAG_CANCEL_CURRENT);

        //SETING THE ALARM
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            alarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 300000, pendingIntent);
        } else {
            alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 300000, pendingIntent);
        } 

    }

AlarmTriggerBroadcastReceiver.java

public class AlarmTriggerBroadcastReceiver extends BroadcastReceiver {

    private final static String TAG_ALARM_TRIGGER_BROADCAST = "ALARM_TRIGGER_BROADCAST";

    @Override
    public void onReceive(Context context, Intent intent) {
        //WAKE UP DEVICE
        WakeLocker.acquire(context);

            //LAUNCH PAGE
            Intent intent1 = new Intent();
            intent1.setClassName(context.getPackageName(), SomeActivity.class.getName());
            intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(intent1);


            Toast.makeText(context, "TOAST ALARM", Toast.LENGTH_LONG).show();
        };

        //SET NEW ALARM
        AlarmManagerActivity.setAlarm(context);
        WakeLocker.release();   

    }

}

WakeLocker.java

//WAKES UP DEVICE IF PHONE'S SCREEN LOCKED
public abstract class WakeLocker {
    private static PowerManager.WakeLock wakeLock;

    public static void acquire(Context ctx) {
        //if (wakeLock != null) wakeLock.release();

        PowerManager pm = (PowerManager) ctx.getSystemService(Context.POWER_SERVICE);
        wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK |
                PowerManager.ACQUIRE_CAUSES_WAKEUP |
                PowerManager.ON_AFTER_RELEASE, "myapp:WAKE_LOCK_TAG");
        wakeLock.acquire();
    }

    public static void release() {
        if (wakeLock != null) wakeLock.release(); wakeLock = null;
    }
}

Manifest

    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
    <uses-permission android:name="android.permission.SET_ALARM"/>

  <receiver
            android:name=".Alarm.AlarmTriggerBroadcastReceiver"
            android:process=":remote">

            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"></action>
            </intent-filter>
            <intent-filter android:priority="1">
                <action android:name="my.app.here.ALARM_RECIEVED" />
            </intent-filter>
        </receiver>

同事们，做什么？

Answer 1

您是否尝试过使用WorkManager而不是必须使用广播接收器？查看详细信息here。还有一个应用演示here。

Android如何设置精确的重复闹钟？

1 个答案: