我的应用在iOS 7上运行良好,但在iOS 8 SDK上却无法运行。
CLLocationManager不返回位置,我没有看到我的应用程序下设置->位置服务。我在这个问题上做了谷歌搜索,但没有任何结果。会有什么问题呢?
我的应用在iOS 7上运行良好,但在iOS 8 SDK上却无法运行。
CLLocationManager不返回位置,我没有看到我的应用程序下设置->位置服务。我在这个问题上做了谷歌搜索,但没有任何结果。会有什么问题呢?
当前回答
一个小帮手,为所有你有一个以上的信息。plist文件…
find . -name Info.plist | xargs -I {} /usr/libexec/PlistBuddy -c 'Add NSLocationWhenInUseUsageDescription string' {}
它将为所有的Info添加所需的标签。当前目录下的Plist文件(以及子文件夹)。
另一个原因是:
find . -name Info.plist | xargs -I {} /usr/libexec/PlistBuddy -c 'Set NSLocationWhenInUseUsageDescription $YOURDESCRIPTION' {}
它会将您的描述添加到所有文件中。
其他回答
我的解决方案可以在Xcode 5中编译:
#ifdef __IPHONE_8_0
NSUInteger code = [CLLocationManager authorizationStatus];
if (code == kCLAuthorizationStatusNotDetermined && ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)] || [self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])) {
// choose one request according to your business.
if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"]){
[self.locationManager requestAlwaysAuthorization];
} else if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"]) {
[self.locationManager requestWhenInUseAuthorization];
} else {
NSLog(@"Info.plist does not contain NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription");
}
}
#endif
[self.locationManager startUpdatingLocation];
在[locationManager startUpdatingLocation];之前,添加一个iOS8位置服务请求:
if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
[locationManager requestAlwaysAuthorization];
编辑应用程序的信息。并添加键NSLocationAlwaysUsageDescription与字符串值,将显示给用户(例如,我们尽我们最大的努力来保持您的电池寿命。)
如果你的应用程序只在应用程序打开时需要位置服务,请替换:
requestAlwaysAuthorization with requestWhenInUseAuthorization和
NSLocationAlwaysUsageDescription和NSLocationWhenInUseUsageDescription。
添加关键NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription(后台GPS使用)字符串要求使用GPS在每个信息。Plist从每个目标。 通过运行命令获得许可: (自我initLocationManager: locationManager);
其中“initLocationManager”为:
// asks for GPS authorization on iOS 8
-(void) initLocationManager:(CLLocationManager *) locationManager{
locationManager = [[CLLocationManager alloc]init];
if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
[locationManager requestAlwaysAuthorization];
}
记住,如果键不是在每个信息上。Plist为每个目标,应用程序将不会询问用户。if提供了与iOS 7的兼容性,respondsToSelector:方法保证了未来的兼容性,而不仅仅是解决iOS 7和8的问题。
解决方案与向后兼容,不产生Xcode警告:
SEL requestSelector = NSSelectorFromString(@"requestWhenInUseAuthorization");
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined &&
[self.locationManager respondsToSelector:requestSelector]) {
((void (*)(id, SEL))[self.locationManager methodForSelector:requestSelector])(self.locationManager, requestSelector);
[self.locationManager startUpdatingLocation];
} else {
[self.locationManager startUpdatingLocation];
}
在Info.plist中设置NSLocationWhenInUseUsageDescription键。
对于iOS版本11.0+: 在Info.plist中设置NSLocationAlwaysAndWhenInUseUsageDescription键。还有另外2把钥匙。
用于询问位置的旧代码将无法在iOS 8中使用。您可以尝试使用此方法进行位置授权:
- (void)requestAlwaysAuthorization
{
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
// If the status is denied or only granted for when in use, display an alert
if (status == kCLAuthorizationStatusAuthorizedWhenInUse || status == kCLAuthorizationStatusDenied) {
NSString *title;
title = (status == kCLAuthorizationStatusDenied) ? @"Location services are off" : @"Background location is not enabled";
NSString *message = @"To use background location you must turn on 'Always' in the Location Services Settings";
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"Settings", nil];
[alertView show];
}
// The user has not enabled any location services. Request background authorization.
else if (status == kCLAuthorizationStatusNotDetermined) {
[self.locationManager requestAlwaysAuthorization];
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1) {
// Send the user to the Settings for this app
NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:settingsURL];
}
}