IOS开发IOS 8simulator运行时，定位卡死bug解决

来源：互联网发布：淘宝怎么解封永久封号编辑：程序博客网时间：2024/05/19 03:24

在 iOS 8 上编译会出现以下 log ：

Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.

经搜索得到解决方法如下：

1、修改info.plist：

新增key值为NSLocationWhenInUseUsageDescription 或 NSLocationAlwaysUsageDescription（这里，我将两个都加了进去），value可以为空，也可以设置YES，不过我得问题还是不能解决，最终还是找到得了问题所在，就是info.plist中还需要包含Supported interface orientations 这个Array字段。然后运行就解决了。

2、修改代码：

在调用方法startUpdatingLocation的前面加上一句

 //*****iOS8添加（2015/04/02）*****//if ([_locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {<span style="white-space:pre"></span>[_locationManager requestWhenInUseAuthorization];//iOS 8才有，且必须用上}/*if ([_locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {<span style="white-space:pre"></span>[_locationManager requestWhenInUseAuthorization];}if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {<span style="white-space:pre"></span>[_locationManager requestWhenInUseAuthorization];}*/

3、博客原文修改方法：

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locationManager = [[CLLocationManager alloc] init];
        locationManager.delegate = self;
        locationManager.desiredAccuracy=kCLLocationAccuracyBest;
        if([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
            [locationManager requestWhenInUseAuthorization];
        }
        [locationManager startUpdatingLocation];

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- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
 
    if(
        ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)] && status != kCLAuthorizationStatusNotDetermined && status != kCLAuthorizationStatusAuthorizedWhenInUse) ||
        (![locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)] && status != kCLAuthorizationStatusNotDetermined && status != kCLAuthorizationStatusAuthorized)
        ) {
 
        NSString *message = @"您的手機目前並未開啟定位服務，如欲開啟定位服務，請至設定->隱私->定位服務，開啟本程式的定位服務功能";
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"無法定位"message:message delegate:nil cancelButtonTitle:@"確定"otherButtonTitles: nil];
        [alertView show];
 
    }else{
 
        [locationManager startUpdatingLocation];
    }
}

上面那行是 iOS 8 以上，第二行是 iOS 7 以下，因為 kCLAuthorizationStatusAuthorized 在 iOS 8 完全不能使用。

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CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
     
    if(status == kCLAuthorizationStatusAuthorizedWhenInUse || status == kCLAuthorizationStatusAuthorized) {
 
    // 開始定位
 
}else{
 
    // 顯示警告
}

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