适配型号

//适配ios7

if ([[[UIDevice currentDevice] systemVersion] doubleValue]>=7.0) {

self.navigationController.navigationBar.translucent = NO;

}

if ([[UIDevice currentDevice].systemVersion floatValue] >= 8) {

//由于IOS8中定位的授权机制改变 需要进行手动授权

CLLocationManager  *locationManager = [[CLLocationManager alloc] init];

//获取授权认证

[locationManager requestAlwaysAuthorization];

[locationManager requestWhenInUseAuthorization];

}