iPhone 中从非活动状态转为活动状态时应用程序崩溃
我正在制作一个应用程序，其中必须在设置的时间后在地图上显示用户当前位置，我已经对此进行了研究，它对我有用，但是如果我让应用程序保持打开状态，并且 5 分钟后应用程序进入非活动状态，我会停止位置更新，5 分钟后，如果我再次重新锁定滑块并检查应用程序，它会进入活动状态，已调用位置更新并显示当前位置，但是有几次它从非活动状态崩溃到活动状态
- (void)applicationWillResignActive:(UIApplication *)application {
[locationManger stopUpdatingLocation];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
locationManger.delegate = self;
[locationManger startUpdatingLocation];
}
I am making an application in which have to show user current location on map with some time set, i have worked on that and it is working for me, however if i leave the app open and after 5 minutes app goes to inactive state i stop the location update and after 5 minutes if i again relock the slider and check the app, it comes into active state , have called location update and show the current location, however few times it got crashed from inactive to active state
- (void)applicationWillResignActive:(UIApplication *)application {
[locationManger stopUpdatingLocation];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
locationManger.delegate = self;
[locationManger startUpdatingLocation];
}
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如果您只需在地图上显示用户的位置，那么您不需要 CLLocationManager。只需使用
mapView.showsUserLocation = YES;If you only have to show the user's location on the map, then you dont need CLLocationManager. Just use
mapView.showsUserLocation = YES;