问题描述
该应用程序应该很简单。您可以设置带有任务和时间的列表项。它应在给定时间向您发送通知。 当应用程序运行时，一切正常，但是当我关闭它时，我没有收到通知。我尝试使用API 23和APIR。我在看其他文章，但找不到任何解决方案。
接收器类别：
public class AlertReceiver extends broadcastReceiver {
notificationmanagerCompat notificationmanager;
@Override
public void onReceive(Context context,Intent intent) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
boolean is24HourFormat = android.text.format.DateFormat.is24HourFormat(context);
CharSequence setTime;
if (is24HourFormat) {
setTime = DateFormat.format("HH:mm",calendar);
} else {
setTime = DateFormat.format("hh:mm a",calendar);
}
String currentTime = setTime.toString();
DataBaseHelper dataBaseHelper = new DataBaseHelper(context);
Item itemForNotificationText = dataBaseHelper.GetNotificationContent(currentTime);
notificationmanagerCompat notificationmanager = notificationmanagerCompat.from(context);
Notification notification = new NotificationCompat.Builder(context,CHANNEL_1_ID)
.setSmallIcon(R.drawable.ic_baseline_notifications_active_24)
.setContentTitle(itemForNotificationText.getTask())
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setCategory(NotificationCompat.CATEGORY_MESSAGE)
.setContentText(itemForNotificationText.getTime())
.build();
notificationmanager.notify(dataBaseHelper.GetID(),notification);
}
}
我厌倦了使用setExactAndAllowWhileIdle，但仍然无法正常工作。
启动警报：
public void startAlarm (Calendar c){
AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this,AlertReceiver.class);
PendingIntent pendingIntent = PendingIntent.getbroadcast(this,item.getNotification_id(),intent,0);
if (c.before(Calendar.getInstance())) {
c.add(Calendar.DATE,1);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
alarmManager.setExact(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,pendingIntent);
}
}
清单文件：
<application
android:name=".App"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".InsertActivity"></activity>
<activity
android:name=".TodoList"
android:parentActivityName=".MainActivity" />
<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=".AlertReceiver"/>
</application>
APP类（在此处创建通知通道）：
public class App extends Application {
public static final String CHANNEL_1_ID = "Channel 1";
@Override
public void onCreate() {
super.onCreate();
CreateNotificationChannels();
}
private void CreateNotificationChannels () {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel1 = new NotificationChannel(
CHANNEL_1_ID,"Channel 1",notificationmanager.IMPORTANCE_HIGH
);
channel1.setDescription("Notifies you when an event has started.");
channel1.enableVibration(true);
notificationmanager manager = getSystemService(notificationmanager.class);
manager.createNotificationChannel(channel1);
}
}
}
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
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