标签：des blog io os ar strong sp div on
关于CLLocationManager获取地理位置遇到的一些小事；
项目使arc
第一步：获取是否允许定位
-(BOOL)IsLocationServicesEnabled
{
/**
* [CLLocationManager locationServicesEnabled] 系统设置允许定位服务是否开启
* [CLLocationManager authorizationStatus] != kCLAuthorizationStatusDenied APP是否开启定位服务
*/
return ([CLLocationManager locationServicesEnabled] && [CLLocationManager authorizationStatus] != kCLAuthorizationStatusDenied);
}
第二步：开始定位，创建全局变量 （个人理解：如果CLLocationManager的属性不是全局的在ARC项目中，出了函数体 局部变量就会被release）
@property (nonatomic, strong) CLLocationManager *userLocation;
-(void)getUserLocationInfomation
{
if ([self IsLocationServicesEnabled])
{
if (!self.userLocation)
{
self.userLocation = [[CLLocationManager alloc]init];
}
self.userLocation.delegate = self;
//选择定位的方式为最优的状态
self.userLocation.desiredAccuracy = kCLLocationAccuracyBest;
//发生事件的最小距离间隔
self.userLocation.distanceFilter = kCLDistanceFilterNone;
[self.userLocation startUpdatingLocation];
}
}
第三部分：delegate回调
#pragma locationManager delegate
-(void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
NSTimeInterval locationAge = -[newLocation.timestamp timeIntervalSinceNow];
if (locationAge > 180.0) return;
// 测试该水平精度是否有效
if (newLocation.horizontalAccuracy < 0) return;
// 写你的代码 现在拿到的newLocation是有效的
[self.userLocation stopUpdatingLocation];
self.userLocation.delegate = nil;
}
-(void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error
{
}
标签：des blog io os ar strong sp div on
原文地址：http://www.cnblogs.com/swiftAngel/p/4039596.html
