Android 如何设置精确重复闹钟?
Android How to set exact repeating alarm?
我正在构建一个警报应用程序,它将有一个精确的重复警报。
看到 Repeating
Android 如何只提供 Inexact
警报和 ,我尝试制作 Exact
警报,触发后会自行设置一次再次。只要我的屏幕一直亮着,这种类型的闹钟就可以正常工作。但是一旦它进入睡眠状态,第一次警报就可以正常工作,但是以编程方式设置的第二次警报会延迟触发,就像我使用 Inexact
方法一样。
作为替代解决方案,我正在考虑制作一个 InexactRepeating
警报,它会每分钟触发一次以检查它是否 "the time"。这样我的警报将有 2 分钟的不精确间隔,这是可以接受的。但我不确定它会对 phone 的电池造成多大压力。
大家有什么想法吗?
这是我在 Exact
警报时的尝试:
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>
各位码农,怎么办?
我正在构建一个警报应用程序,它将有一个精确的重复警报。
看到 Repeating
Android 如何只提供 Inexact
警报和 Exact
警报,触发后会自行设置一次再次。只要我的屏幕一直亮着,这种类型的闹钟就可以正常工作。但是一旦它进入睡眠状态,第一次警报就可以正常工作,但是以编程方式设置的第二次警报会延迟触发,就像我使用 Inexact
方法一样。
作为替代解决方案,我正在考虑制作一个 InexactRepeating
警报,它会每分钟触发一次以检查它是否 "the time"。这样我的警报将有 2 分钟的不精确间隔,这是可以接受的。但我不确定它会对 phone 的电池造成多大压力。
大家有什么想法吗?
这是我在 Exact
警报时的尝试:
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>
各位码农,怎么办?