我將通過創建2個接口在PCL項目啓動:
public interface IAlarm {
void SetAlarm();
}
public interface INotification {
void Notify(LocalNotification notification);
}
然後,在Android項目,創建實現:
報警助手
[assembly: Dependency(typeof(AlarmHelper))]
namespace Test.Droid
{
class AlarmHelper: IAlarm
{
public void SetAlarm(int minutes)
{
var alarmTime = Calendar.Instance;
alarmTime.Add(CalendarField.Minute, minutes);
var intent = new Intent(Android.App.Application.Context, typeof(ScheduledAlarmHandler));
var pendingIntent = PendingIntent.GetBroadcast(Android.App.Application.Context, 0, intent, PendingIntentFlags.CancelCurrent);
var alarmManager = Android.App.Application.Context.GetSystemService(Context.AlarmService) as AlarmManager;
alarmManager.Set(AlarmType.RtcWakeup, alarmTime.TimeInMillis, pendingIntent);
}
}
}
通知助手
[assembly: Dependency(typeof(NotificationHelper))]
namespace Test.Droid
{
class NotificationHelper : INotification
{
public void Notify (string title, string text)
{
NotificationManager notificationManager = (NotificationManager) Android.App.Application.Context.GetSystemService(Context.NotificationService);
Intent intent = new Intent(Android.App.Application.Context, typeof(MainActivity));
PendingIntent pIntent = PendingIntent.GetActivity(Android.App.Application.Context, 0, intent, PendingIntentFlags.OneShot);
Notification nativeNotification = new Notification();
var builder = new NotificationCompat.Builder(Android.App.Application.Context)
.SetContentTitle(title)
.SetContentText(text)
.SetSmallIcon(Resource.Drawable.ic_notif) // 24x24 dp
.SetLargeIcon(BitmapFactory.DecodeResource(Android.App.Application.Context.Resources, Android.App.Application.Context.ApplicationInfo.Icon))
.SetPriority((int)NotificationPriority.Default)
.SetAutoCancel(true)
.SetContentIntent(pIntent);
notificationManager.Notify(0, builder.Build()); // Id 0 can be random
}
}
}
當等待時間結束後,BroadCastReceiver
將被稱爲:
alarmHelper = DependencyService.Get<IAlarm>();
alarmSetter.SetAlarm(10); // 10 minutes from now
我:
[BroadcastReceiver]
class ScheduledAlarmHandler : WakefulBroadcastReceiver
{
public override void OnReceive(Context context, Intent intent)
{
// Implement quick checking logic here if notification is still required, plus its tittle and text
// you have 10 seconds max in this method and cannot use 'await'
var notificationHelper = new NotificationHelper();
notificationHelper.Notify("Title","Text");
}
}
在PCL項目遊戲邏輯,你可以按照如下設置新鬧鈴有意分開了通知邏輯,以便在10分鐘後檢查是否仍應顯示通知並設置其標題和文本。另一種方法是在使用intent.putextra
設置鬧鐘時傳遞標題和文本。