使用CLLocationManager定位踏兜，由于是在- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo fetchCompletionHandler:(void(^)(UIBackgroundFetchResultresult))handler收到推送信息后開始定位，直接使用CLLocationManagerDelegate八秃，會出現(xiàn)有時進入代理碱妆，有時不進入代理的問題
解決方案：使用單例模式
（1）CurrentLocationManager.h
#import
#import"AppDelegate.h"
@interfaceCurrentLocationManager :CLLocationManager
+ (instancetype)sharedManager;
@property(nonatomic,assign)NSDictionary*myPush;
@property(nonatomic,assign)doubledeviceLevel;
@end
（2）CurrentLocationManager.m
#import"CurrentLocationManager.h"
@interfaceCurrentLocationManager()
@end
@implementationCurrentLocationManager
+ (instancetype)sharedManager
{
staticCurrentLocationManager*instance =nil;
staticdispatch_once_tonceToken;
dispatch_once(&onceToken,? ^{
instance? = [[CurrentLocationManageralloc]init];
});
returninstance;
}
- (instancetype)init
{
self= [superinit];
if(self)
{
self.delegate=self;
self.desiredAccuracy=kCLLocationAccuracyHundredMeters;
}
returnself;
}
- (void)locationManager:(CLLocationManager*)manager
didUpdateLocations:(NSArray*)locations
{
intlength
=[locationscount] -1;
CLLocation*newLocation = [locationsobjectAtIndex:length];
NSTimeIntervallocationAge = -[newLocation.timestamptimeIntervalSinceNow];
if(locationAge >5.0|| newLocation.horizontalAccuracy<0){
return;
}else{
floatlat =
newLocation.coordinate.latitude;
floatlng =
newLocation.coordinate.longitude;
NSLog(@"--------------> %f , %f ",newLocation.coordinate.latitude,newLocation.coordinate.longitude);
//具體和服務(wù)器的操作
[selfstopUpdatingLocation];
}
}
@end
（3）AppDelegate.m
if([CLLocationManagerlocationServicesEnabled]) {//判斷是否打開了位置服務(wù)
#if
__IPHONE_OS_VERSION_MAX_ALLOWED >=80000
[[CurrentLocationManagersharedManager]requestAlwaysAuthorization];
#endif
#if
__IPHONE_OS_VERSION_MAX_ALLOWED >=90000
[[CurrentLocationManagersharedManager]setAllowsBackgroundLocationUpdates:YES];
#endif
[[CurrentLocationManagersharedManager]startMonitoringSignificantLocationChanges];
[[CurrentLocationManagersharedManager]setMyPush:myPush];
[[CurrentLocationManagersharedManager]setDeviceLevel:deviceLevel];
[[CurrentLocationManagersharedManager]startUpdatingLocation];
handler(UIBackgroundFetchResultNewData);
}
