public MainApplication(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
{
Initialized = true;
_context = this;
AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
AndroidEnvironment.UnhandledExceptionRaiser += AndroidEnvironment_UnhandledExceptionRaiser;
Connectivity.ConnectivityChanged += Connectivity_ConnectivityChanged;
}
/// <summary>
/// 判断本机上是否有能处理当前Intent的Activity
/// </summary>
/// <returns></returns>
protected bool DoesActivityExists()
{
if (!MainApplication.Initialized)
{
return(false);
}
var app = MainApplication.GetInstance();
Android.Content.PM.PackageManager pm = app.PackageManager;
var list = pm.QueryIntentActivities(intent, Android.Content.PM.PackageInfoFlags.MatchDefaultOnly);
return(list != null && list.Count() > 0);
}
public override void OnReceive(Context context, Intent intent)
{
this.context = context;
string action = intent.Action;
if ("android.intent.action.USER_PRESENT".Equals(action) || "android.intent.action.ACTION_POWER_CONNECTED".Equals(action) || "android.intent.action.ACTION_POWER_DISCONNECTED".Equals(action))
{
this.StartPushService();
}
///切换到后台 弹通知栏
if (MainApplication.GetInstance().IsAppInBackground())
{
ShowMessageNotification("DCMS正在后台运行....");
}
}
public MainApplication(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
{
instance = this;
}
private void ShowMessageNotification(string message)
{
NotificationManagerCompat notificationManager = NotificationManagerCompat.From(MainApplication.GetInstance());
var builder = new NotificationCompat.Builder(MainApplication.GetInstance(), MainApplication.NOTIFICATION_CHANNEL_ID);
Intent intent = new Intent();
intent.SetClass(MainApplication.GetInstance(), typeof(MainActivity));
PendingIntent pendingIntent = PendingIntent.GetActivity(MainApplication.GetInstance(), 1, intent, PendingIntentFlags.UpdateCurrent);
var currenttimemillis = (long)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;
builder.SetAutoCancel(true);
builder.SetContentIntent(pendingIntent);
builder.SetWhen(currenttimemillis);
builder.SetVisibility(NotificationCompat.VisibilityPublic);
builder.SetDefaults(NotificationCompat.DefaultLights);
builder.SetContentTitle(MainApplication.NOTIFICATION_CHANNEL_NAME);
builder.SetContentText(message);
Notification notification = builder.Build();
notificationManager.Notify(0, notification);
}