ios - 单击本地通知时出现 Google FCM ios-quickstart 错误 - 无法识别的选择器已发送到实例

Question

从 Google Firebase 控制台推送消息后，推送消息通知显示在 iPhone 设备顶部，然后我单击该消息，Xcode 抛出如下异常：

 [UIConcreteLocalNotification setAlertTitle:]: unrecognized selector sent to instance 0x17e1a810

 Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIConcreteLocalNotification setAlertTitle:]: unrecognized selector sent to instance

这里的代码：

//show notification to status bar
UILocalNotification *local_notification = [[UILocalNotification alloc] init];

local_notification.userInfo = userInfo;
local_notification.alertBody = userInfo[@"notification"][@"body"];
local_notification.alertTitle = userInfo[@"notification"][@"title"] ? userInfo[@"notification"][@"title"]: @"VietAir.tv Thông báo";
local_notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:0]; // todo item due date (when notification will be fired). immediately here

 [[UIApplication sharedApplication] scheduleLocalNotification:local_notification];

请帮助我，谢谢你的建议

Answer 1

问题是在设置标题时。检查它是否alertTitle实现了方法。检查一次您为其设置的标题格式。