如何在Xamarin Forms Android中在屏幕上显示通知弹出窗口?
我的本地通知仅显示状态栏 以下是一个例子: 但是我想在屏幕上显示通知 像这样: 以下是我的本地通知代码:如何在Xamarin Forms Android中在屏幕上显示通知弹出窗口?,xamarin,xamarin.forms,xamarin.android,Xamarin,Xamarin.forms,Xamarin.android,我的本地通知仅显示状态栏 以下是一个例子: 但是我想在屏幕上显示通知 像这样: 以下是我的本地通知代码: public void GetLocalNotification(string title, string message) { try { NotificationManager notificationManager = Xamarin.Forms.Forms.Context.GetSys
public void GetLocalNotification(string title, string message)
{
try
{
NotificationManager notificationManager = Xamarin.Forms.Forms.Context.GetSystemService(Context.NotificationService) as NotificationManager;
Notification notification = new Notification();
int notificationId;
if (Build.VERSION.SdkInt >= Build.VERSION_CODES.O)
{
String CHANNEL_ID = "com.ShipActivePOS.android";
string CharSequence = "MyChannel";
String Description = "This is my channel";
NotificationImportance importance = NotificationManager.ImportanceHigh;
NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, CharSequence, importance);
mChannel.Description = message;
mChannel.EnableLights(true);
mChannel.EnableVibration(true);
mChannel.SetVibrationPattern(new long[] { 100, 200, 300, 400, 500, 400, 300, 200, 400 });
mChannel.SetShowBadge(false);
// notificationManager.CreateNotificationChannel(mChannel);
notificationId = 1100;
// string URGENT_CHANNEL = "com.ShipActivePOS.android.urgent";
// Instantiate the builder and set notification elements:
NotificationCompat.Builder builder = new NotificationCompat.Builder(global::Android.App.Application.Context, CHANNEL_ID)
.SetContentTitle("Sales123")
.SetContentText(message)
.SetChannelId(CHANNEL_ID)
.SetSmallIcon(Resource.Drawable.AppLogo);
// Build the notification:
Notification notificationO = builder.Build();
// Get the notification manager:
// Publish the notification:
notificationManager.Notify(notificationId, notificationO);
}
else
{
Notification.Builder builder = new Notification.Builder(global::Android.App.Application.Context)
.SetContentTitle(title)
.SetContentText(message)
.SetDefaults(NotificationDefaults.Sound)
.SetSmallIcon(Resource.Drawable.AppLogo);
builder.SetDefaults(NotificationDefaults.Sound | NotificationDefaults.Vibrate);
notification = builder.Build();
notificationId = 0;
}
// Publish the notification:
notificationManager.Notify(notificationId, notification);
}
catch (Exception ex)
{
}
}
那么如何在屏幕顶部显示通知呢?
是否可以在屏幕上显示通知?您应该更改
通知
优先级或通知频道
重要性
通知优先级,由SetPriority()
设置。优先级决定了通知在Android 7.1及更低版本上的侵入性。(对于Android 8.0及更高版本,您必须设置频道重要性)
在Android 7.1(API级别25)及更低版本上:
将通知优先级设置为NotificationCompat.priority\u HIGH
或NotificationCompat.priority\u MAX
设置铃声和振动-您可以使用设置默认值(Notification.DEFAULT\u ALL)
Android 8.0(API级别26)及更高版本:
将通知通道优先级设置为NotificationManager.IMPORTANCE\u HIGH
注意:
Notification.PRIORITY\u HIGH
和Notification.PRIORITY\u MAX
在API级别26中被弃用。请改用NotificationCompat
有关更多信息,请阅读。您想先显示通知,然后再将其放入托盘中吗?是的。先显示,然后发送。您可以参考以下内容:查看Abby wang的评论,它有您的答案!在更改优先级后,您可能需要卸载/重新安装应用程序才能使其生效。