我正在尝试在我的应用中使用位置监控。我可以设置自己的位置，并反向对要监视的位置进行地址解析。 didUpdateToLocation委托方法可以正常工作，并且可以连续更新，但是didStartMonitoingForRegion委托从未被调用，didExitRegion和didEnterRegion也没有得到调用。
有什么建议？
- (IBAction)setLocation:(UIButton *)sender {
if(!self.locationManager) self.locationManager = [[CLLocationManager alloc] init];
[self.locationManager setDelegate:self];
[self.locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[self.locationManager setDistanceFilter:10]; // Update again when a user moves distance in meters
[self.locationManager setPurpose:@"Set location based alerts if switch is on"];
self.plugLocation=nil; //reset to nil so didUpdateToLocation will update it
self.distanceLabel.text=[NSString stringWithFormat:@"%d",0];
[self.locationManager startUpdatingLocation];
if ( ![CLLocationManager regionMonitoringAvailable] || ![CLLocationManager regionMonitoringEnabled] ){
NSLog(@"Location monitoring not Unavailable");
}else {
}
}
-(void)setPlugLocation:(CLLocation *)plugLocation{
//
if (!_plugLocation) _plugLocation=[[CLLocation alloc]init];
_plugLocation=plugLocation;
if (_plugLocation) {
[self setRegion:plugLocation radius:20 name:self.plugName];
[self reverseGeocode:self.plugLocation];
NSLog(@"setPlugLocation %@", [self.plugLocation description]);
}
}
-(void)setRegion:(CLLocation *)center radius:(double)meters name:(NSString*)name{
CLLocationCoordinate2D plug2D;
plug2D.latitude=center.coordinate.latitude;
plug2D.longitude=center.coordinate.longitude;
CLRegion *region = [[CLRegion alloc] initCircularRegionWithCenter:plug2D radius:meters identifier:name];
[self.locationManager startMonitoringForRegion:region desiredAccuracy:kCLLocationAccuracyBest];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
self.latitudeLabel.text=[NSString stringWithFormat:@"%f",newLocation.coordinate.latitude];
self.longitudeLabel.text=[NSString stringWithFormat:@"%f",newLocation.coordinate.longitude];
if (self.plugLocation == nil)self.plugLocation = newLocation;
if (self.plugLocation!=nil) {
CLLocationDistance distanceBetween = [newLocation distanceFromLocation:self.plugLocation];
NSLog(@"didUpdateToLocation Distance from plug=%f",distanceBetween);
self.distanceLabel.text=[NSString stringWithFormat:@"%f",distanceBetween];
}
}
-(void)reverseGeocode:(CLLocation *)coordinates;{
if (!self.plugGeo) self.plugGeo = [[CLGeocoder alloc] init];
[self.plugGeo reverseGeocodeLocation:coordinates completionHandler:^(NSArray *placemarks, NSError *error) {
if (error==nil&&[placemarks count]>0) {
CLPlacemark *placemark=[placemarks objectAtIndex:0];
NSLog(@" setPlugLocation geocodeAddressString %@",placemark);
//should also transfer back to plug detail and save
self.locationLabel.text=[NSString stringWithFormat:@"%@ %@\n%@, %@", placemark.subThoroughfare, placemark.thoroughfare, placemark.locality,placemark.postalCode];
[self sendAlertMessage:[NSString stringWithFormat:@"%@ %@\n%@, %@", placemark.subThoroughfare, placemark.thoroughfare, placemark.locality,placemark.postalCode] title:@"Success"];
}else {
NSLog(@" setPlugLocation couldn't geoCode address %@",error);
}
}];
}
最佳答案
您是否正在使用模拟器来测试您的应用程序？我发现，模拟器对于区域出口/入口完全不可靠。尝试通过插入设备上的项目并将其从iPhone Simulator更改为iOS设备来编译该项目。然后，您可以拔出设备的电源并从手机上运行您的应用进行测试。
模拟器为什么不适用于区域？区域主要由Apple的隐藏算法使用Wi-Fi，手机信号塔和电话请求位置的其他应用程序确定。就像模拟器不使用Wi-Fi或手机发射塔一样，区域监视将几乎是不可能的。
您的代码可能很好(我看不到明显的错误)，但是模拟器给您的结果很差。在您的设备上尝试使用它，让我们知道它是否可以执行相同的操作。
关于ios - CLLocation Manager didStartMonitoringForRegion委托(delegate)方法未调用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/11093846/