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swift - ios地理定位請求窗口一閃而過?
怪我咯
怪我咯 2017-04-17 17:11:37
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import UIKit
import CoreLocation;

class UserLocation: NSObject {
    
    var userPosition: CLLocationCoordinate2D?
    let manager = CLLocationManager()
    
    /// 獲取用戶位置授權(quán),定位用戶當前坐標
    func startUserlocation() {
        
        manager.delegate = self;
        manager.desiredAccuracy = kCLLocationAccuracyBest;  //設(shè)置精確度
        manager.distanceFilter = 50 ;   //重新定位變化距離
        
        
        if #available(iOS 8, *) {   //ios8 或更高
            print("request");
            //manager.requestWhenInUseAuthorization();    //當app進入前臺開始定位
            manager.requestAlwaysAuthorization();       //請求始終進行定位
        }
        
        if !CLLocationManager.locationServicesEnabled() {
            print("設(shè)備沒開啟定位");return;
        }
        
        manager.startUpdatingLocation();    //開始定位
        
        print("start");
    }

}

extension UserLocation: CLLocationManagerDelegate {
    // 地理位置更新
    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print(locations)
        if(locations.count <= 0 ){
            return;
        }
        
        print("定位定位")
        
        let userPos = locations.last! as CLLocation  //獲得最新一次定位信息
        userPosition = userPos.coordinate
        
        manager.stopUpdatingLocation()
    }
    
    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        print(status);
    }
    
    //定位失敗
    func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
        print(error);
    } 
}

如上:
寫了一個location類,然后再界面上點擊一個按鈕觸發(fā)定位:

func richScan(){
    var test = UserLocation();
    test.startUserlocation();
}

但是彈出請求權(quán)限接口后 一閃而過,根本來不及點。這是什么情況。。。

怪我咯
怪我咯

走同樣的路,發(fā)現(xiàn)不同的人生

reply all(3)
PHPzhong

test 被 釋放了,arc 的問題,設(shè)置一個成員變量強引用,如:self.test = UserLocation();

Peter_Zhu

Correct answer upstairs.
Writing UserLocation as a singleton seems to solve the problem.

小葫蘆

If this problem is not solved yet, please read this article http://www.cnblogs.com/huangzs/p/5334130... If it is not solved yet, please message me privately

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