Google FCM ios-单击本地通知时出现快速启动错误 - 发送到实例的选择器无法识别

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

这里是这段代码：

//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];

请帮帮我，谢谢你的建议

Answer 1

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