在IOS8中定位功能新增了两个方法：
- (void)requestWhenInUseAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0);- (void)requestAlwaysAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0);
这两个新增的方法导致，之前写的程序在iOS8运行会出现，定位功能无法正常使用
这样让iOS8正常使用定位功能呢？
<1>你需要在info.plist表里面添加两条变量
在Info.plist中加入两个缺省没有的字段
NSLocationAlwaysUsageDescription
NSLocationWhenInUseUsageDescription
这两个字段没什么特别的意思，就是自定义提示用户授权使用地理定位功能时的提示语。
这样在写代码：
CLLocationManager *locationManager = [[CLLocationManager alloc]init]; locationManager.delegate = self; [locationManager requestAlwaysAuthorization]; locationManager.desiredAccuracy = kCLLocationAccuracyBest; locationManager.distanceFilter = kCLDistanceFilterNone; [locationManager startUpdatingLocation];
这是在调用代理
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status { switch (status) { case kCLAuthorizationStatusNotDetermined: if ([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) { [locationManager requestWhenInUseAuthorization]; } break; default: break; }}
这样就Ok了，就会弹出原来的提示框
导入头文件 #import <CoreLocation/CoreLocation.h>
设置代理方法：
@interface PositioningController ()<CLLocationManagerDelegate>{
UILabel * addressLabel;
}
//定位
@property(nonatomic,strong)CLLocationManager * locationManager;
//地址解析器
@property(nonatomic,strong)CLGeocoder * geocoder;
@end
@implementation PositioningController
- (void)viewDidLoad {
[superviewDidLoad];
// Do any additional setup after loading the view.
self.locationManager.delegate =self;
[self.locationManagerrequestAlwaysAuthorization];
self.locationManager.desiredAccuracy =kCLLocationAccuracyBest;
self.locationManager.distanceFilter =kCLDistanceFilterNone;
[self.locationManagerstartUpdatingLocation];
//开始定位
[self.locationManagerstartUpdatingLocation];
[selfcreateUI];
}
#pragma mark -懒加载
-(CLGeocoder *)geocoder{
if (_geocoder ==nil) {
_geocoder =[[CLGeocoderalloc]init];
}
return_geocoder;
}
-(void)createUI{
addressLabel =[[UILabelalloc]initWithFrame:CGRectMake(20,50, 100,50)];
addressLabel.backgroundColor =[UIColorlightGrayColor];
[self.viewaddSubview:addressLabel];
}
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
switch (status) {
casekCLAuthorizationStatusNotDetermined:
if ([self.locationManagerrespondsToSelector:@selector(requestAlwaysAuthorization)]) {
[self.locationManagerrequestWhenInUseAuthorization];
}
break;
default:
break;
}
}
-(CLLocationManager *)locationManager{
if (_locationManager ==nil) {
//实例化定位对象
_locationManager = [[CLLocationManageralloc]init];
//2.判断定位服务是否可用
if ([CLLocationManagerlocationServicesEnabled]) {
//3.设置总是打开定位服务
//代码打开，设置plist文件
if ([UIDevicecurrentDevice].systemVersion.floatValue >=8.0) {
[_locationManagerrequestAlwaysAuthorization];
}
//4.设置距离（多大距离刷新一次定位信息）单位：米
_locationManager.distanceFilter =10000;
//5.设置代理
_locationManager.delegate =self;
}else{
NSLog(@"定位服务不可用");
}
}
return_locationManager;
}
-(void)parsingAddress{
}
#pragma mark -locationManager Delegate
//当位置刷新的时候会多次调用这个方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
CLLocation *location =locations[0];
//拿到经纬度
CLLocationCoordinate2D coord = location.coordinate;
NSLog(@"%f",coord.latitude);
NSLog(@"%f",coord.longitude);
//参数：1.需要反编码的位置 2.编码结束后调用的block
[self.geocoderreverseGeocodeLocation:location completionHandler:^(NSArray *placemarks,NSError *error) {
if (placemarks.count >0) {
CLPlacemark * place =placemarks[0];
//存储地址信息的字典
//place.addressDictionary =
NSLog(@"%@",place.addressDictionary[@"FormattedAddressLines"][0]);
//1.显示反解析得到的地址
addressLabel.text =place.addressDictionary[@"FormattedAddressLines"][0];
}else{
NSLog(@"没有取到地址");
}
}];
[self.locationManagerstopUpdatingLocation];
}
