菜鸟程序猿

摘要： 一、首先。在Info.plist里面添加Key:Required background modesValue:App registers for location updates- (void)scheduledTimer{ UIApplication* app = [UIApplication sharedApplication]; self.backgroundTask = [app beginBackgroundTaskWithExpirationHandler:^{ NSLog(@"applicationD in Background"); }];... 阅读全文