Question

我需要你的帮助。我遇到了这个问题。警报正常工作。但是，当设备重新启动，并且存储在db中的指定时间是过去（下午3点）且当前时间是下午4点时，我该如何检查以防止立即触发警报？

Docs说：

如果声明的触发时间是过去的，则会立即触发警报。这是我到目前为止所尝试的内容：

<!doctype html>
<html lang="en">
<head>
   ....
 <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
 <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
  .. 
</head>
<body>

<div id="myslider"></div>

<script>
$( "#myslider" ).slider();
</script>



<script>
var circle;

function init() {
var mapCenter = new google.maps.LatLng( 30.356625899999994, 78.08492950000004);
var map = new google.maps.Map(document.getElementById('map'), {
    'zoom':12 ,
    'center': mapCenter,
    'mapTypeId': google.maps.MapTypeId.ROADMAP
});

// Create a draggable marker which will later on be binded to a
// Circle overlay.
var marker = new google.maps.Marker({
    map: map,
    position: new google.maps.LatLng(30.356625899999994, 78.08492950000004),
    draggable: true,
    title: 'Drag me!'
});


// Add a Circle overlay to the map.
circle = new google.maps.Circle({
    map: map,
    radius: 5000 // 5 km
});

// Since Circle and Marker both extend MVCObject, you can bind them
// together using MVCObject's bindTo() method.  Here, we're binding
// the Circle's center to the Marker's position.
// http://code.google.com/apis/maps/documentation/v3/reference.html#MVCObject
circle.bindTo('center', marker, 'position');
}


$("#myslide").slider({
    orientation: "vertical",
    range: "min",
    max: 3000,
     min: 100,
    value: 500,
    slide: function(event, ui) {
        updateRadius(circle, ui.value);
    }
});

function updateRadius(circle, rad) {
    circle.setRadius(rad);
}

// Register an event listener to fire when the page finishes loading.
google.maps.event.addDomListener(window, 'load', init);

</script>
</body>
</html>

AndroidManifest：

class DeviceBootReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {

    // Check if successful reboot
    if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {

        SharedPreferences shared = context.getSharedPreferences(Constants.PREF_NAME, Context.MODE_PRIVATE);
        // Check if daily notification is enabled
        // If yes, call NotificationPublisher to communicate with NotificationAlarmService
        if(shared.getBoolean(Constants.KEY_IS_DAILY_NOTIFIED, false)) {
            DBHelper dbHelper = new DBHelper(context);
            DBConnector.dbConnect(dbHelper);

            int DAILY_NOTIFICATION_ID = Constants.DAILY_VERSE_NOTIFICATION_1_ID;
            ArrayList<Notification> notificationList = dbHelper.getNotifications();
            Log.e("", "notificationList: " + notificationList.size());

            for(Notification obj : notificationList) {
                Calendar datetime = Calendar.getInstance();
                datetime.set(Calendar.HOUR_OF_DAY, obj.getHourOfDay());
                datetime.set(Calendar.MINUTE, obj.getMinute());
                datetime.set(Calendar.SECOND, 0);

                Calendar now = Calendar.getInstance();
                if (now.after(datetime)) {
                    datetime.add(Calendar.DATE, now.get(Calendar.DATE) + 1);
                }

                Log.e("BOOT RECEIVER", "" + obj.getHourOfDay() + ":" + obj.getMinute());

                Intent myIntent = new Intent(context, NotificationPublisher.class);
                PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
                        DAILY_NOTIFICATION_ID++,
                        myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
                AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
                alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
                        datetime.getTimeInMillis(), AlarmManager.INTERVAL_DAY,
                        pendingIntent);
            }

        }

    }
}

我的代码似乎有什么问题？我很感激任何帮助。谢谢！

Answer 1

我设置＆amp;像这样检查闹钟时间，它现在对我有用：

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, alarmTimePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, alarmTimePicker.getCurrentMinute());
Calendar now = Calendar.getInstance();
now.setTimeInMillis(System.currentTimeMillis());
if (calendar.before(now))
    calendar.add(Calendar.DAY_OF_MONTH, 1);

Answer 2

在间隔日设置重复警报的示例代码。

如果你想通过扩展Application类并编写代码来设置在onCreate里面的报警，你想要设置报警，如果你想设置报警。

public class MainActivity extends AppCompatActivity {

private AlarmManager alarmMgr;
private PendingIntent alarmIntent;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 15);
calendar.set(Calendar.MINUTE, 30);

alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
        AlarmManager.INTERVAL_DAY, alarmIntent);
}
}

SampleBootReciver - 设备重启后设置闹钟

public class SampleBootReceiver extends BroadcastReceiver {

private AlarmManager alarmMgr;
private PendingIntent alarmIntent;

@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {

    alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intent1 = new Intent(context, AlarmReceiver.class);
    alarmIntent = PendingIntent.getBroadcast(context, 0, intent1, 0);

    Calendar now = Calendar.getInstance();
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.set(Calendar.HOUR_OF_DAY, 15);
    calendar.set(Calendar.MINUTE, 30);

    if (calendar.before(now))
        calendar.add(Calendar.DAY_OF_MONTH, 1);

    alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
            AlarmManager.INTERVAL_DAY, alarmIntent);

}
}
}

AlarmReceiver - 触发警报后执行操作。

public class AlarmReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    Toast.makeText(context, "I'm running", Toast.LENGTH_SHORT).show();
}
}

我只是在举杯祝酒。

最后是清单文件 -

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"

包=＆＃34; com.bits.kevz.samplealarm＆＃34;＆GT;

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

<receiver android:name=".AlarmReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED"/>
    </intent-filter>
</receiver>

<receiver android:name=".SampleBootReceiver"
    android:enabled="false">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

</application>

</manifest>

我希望您运行上面的代码并检查onBootCompleted输出。

Android设备重新启动检查指定的警报时间是否过去

2 个答案: