我正在开发一个基于位置的移动应用程序。即使应用程序被终止/终止，我的应用程序也会使用用户的当前位置更新服务器。在集成谷歌地点选择器 API 之前，我的应用程序运行良好。为 ios 安装 google place picker API 后，我的应用程序仅在 5 到 10 分钟内更新位置，然后停止更新位置。
//我的代码：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Initialize Location Manager
sLocationManager;
//the system automatically relaunches the application into the background if a new event arrives.
// The options dictionary passed to the application:didFinishLaunchingWithOptions: method of your application delegate contains the key UIApplicationLaunchOptionsLocationKey to indicate that your application was launched because of a location event
if (launchOptions[UIApplicationLaunchOptionsLocationKey]) {
NSLog(@"---UIApplicationLaunchOptionsLocationKey");
sLocationManager.locationUpdatedInBackground = ^(NSArray<CLLocation *> *locations) {
NSLog(@"---setLocationUpdatedInBackground");
[sLocationModule saveNewLocations];
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:300];
notification.alertBody = @"Your location was changed. Please run application for tracking your geoposition with best accuracy.";
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
[sLocationManager startMonitoringSignificantLocationChanges];
};
}else {
sLocationManager.locationUpdatedInForeground = ^(NSArray<CLLocation *> *locations) {
NSLog(@"---setLocationUpdatedInForeground");
[sLocationModule saveNewLocations];
};
sLocationManager.locationUpdatedInBackground = ^(NSArray<CLLocation *> *locations) {
NSLog(@"---setLocationUpdatedInBackground");
[sLocationModule saveNewLocations];
[sLocationManager startDeferredLocationUpdates];
};
// Notifications
[application cancelAllLocalNotifications];
}
return YES;
//位置管理器
#pragma mark - CLLocationManager Delegate
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)aLocations {
NSString *infoMessage = [NSString stringWithFormat:@"%@", aLocations];
NSLog(@"%@", infoMessage);
locations = [@[] mutableCopy];
NSLog(@"locations=%@",locations);
[aLocations enumerateObjectsUsingBlock:^(CLLocation * _Nonnull location, NSUInteger idx, BOOL * _Nonnull stop) {
// Check for location errors (speed -1.00 mps / course -1.00)
// if (location.speed >= 0 &&
// location.course >= 0) {
if (locations.count > 0) {
if ([location.timestamp timeIntervalSinceDate:[locations lastObject].timestamp] > dLocationManagerDistanceFilter ||
[location distanceFromLocation:[locations lastObject]] > dLocationUpdatesUntilTimeout) {
[locations addObject:location];
NSLog(@"location.timestamp>dLocationManagerDistanceFilter**** locations=%@",locations);
}
} else
[locations addObject:location];
NSLog(@"else***locations=%@",locations);
//save location in userdefaults
NSString *latitudeValue = [NSString stringWithFormat:@"%f", location.coordinate.latitude];
NSString *longitudeValue = [NSString stringWithFormat:@"%f",location.coordinate.longitude];
NSLog(@"new location is recieved Lat : %@ Long : %@",latitudeValue,longitudeValue);
[User setUserLat:latitudeValue];
[User setUserLon:longitudeValue];
// }
}];
if ([self isInBackground]) {
NSLog(@"app is in background***");
if (self.locationUpdatedInBackground) {
backgroundTaskIdentifier = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler: ^{
[[UIApplication sharedApplication] endBackgroundTask:backgroundTaskIdentifier];
}];
self.locationUpdatedInBackground(locations);
[delegate locationManagerDidUpdateLocationInBackground];
[[NSNotificationCenter defaultCenter] postNotificationName:nLocationManagerDidUpdateLocationInBackgroundNotification
object:nil
userInfo:nil];
[self endBackgroundTask];
}
} else {
if (self.locationUpdatedInForeground) {
if([[NSUserDefaults standardUserDefaults]objectForKey:@"userIdKey"]){
self.locationUpdatedInForeground(locations);
[delegate locationManagerDidUpdateLocationInForeground];
[[NSNotificationCenter defaultCenter] postNotificationName:nLocationManagerDidUpdateLocationInForegroundNotification
object:nil
userInfo:nil];
}
}
}
}
添加地点选择器的代码
#pragma mark - Place picker delegate methods
- (IBAction)pickPlace:(id)sender {
//dismiss the keyboard
[tfLocation resignFirstResponder];
CLLocationCoordinate2D center = CLLocationCoordinate2DMake(locationManager.location.coordinate.latitude, locationManager.location.coordinate.longitude);
CLLocationCoordinate2D northEast = CLLocationCoordinate2DMake(center.latitude + 0.001, center.longitude + 0.001);
CLLocationCoordinate2D southWest = CLLocationCoordinate2DMake(center.latitude - 0.001, center.longitude - 0.001);
GMSCoordinateBounds *viewport = [[GMSCoordinateBounds alloc] initWithCoordinate:northEast
coordinate:southWest];
GMSPlacePickerConfig *config = [[GMSPlacePickerConfig alloc] initWithViewport:viewport];
_placePicker = [[GMSPlacePicker alloc] initWithConfig:config];
[_placePicker pickPlaceWithCallback:^(GMSPlace *place, NSError *error) {
if (error != nil) {
NSLog(@"Pick Place error %@", [error localizedDescription]);
return;
}
if (place != nil) {
NSLog(@"Place name %@", place.name);
NSLog(@"Place address %@", place.formattedAddress);
NSLog(@"Place attributions %@", place.attributions.string);
// NSString *latitudeValue = [NSString stringWithFormat:@"%f", locationManager.location.coordinate.latitude];
// NSString *longitudeValue = [NSString stringWithFormat:@"%f",locationManager.location.coordinate.longitude];
tfLocation.text=place.formattedAddress;
locationPoint=[NSString stringWithFormat:@"%f,%f", place.coordinate.latitude,place.coordinate.longitude];
} else {
NSLog(@"No place selected");
}
}];
}
// Add a UIButton in Interface Builder, and connect the action to this function.
- (IBAction)getCurrentPlace:(UIButton *)sender {
[_placesClient currentPlaceWithCallback:^(GMSPlaceLikelihoodList *placeLikelihoodList, NSError *error){
if (error != nil) {
NSLog(@"Pick Place error %@", [error localizedDescription]);
return;
}
self.nameLabel.text = @"No current place";
self.addressLabel.text = @"";
if (placeLikelihoodList != nil) {
GMSPlace *place = [[[placeLikelihoodList likelihoods] firstObject] place];
if (place != nil) {
self.nameLabel.text = place.name;
self.addressLabel.text = [[place.formattedAddress componentsSeparatedByString:@", "]
componentsJoinedByString:@"\n"];
}
}
}];
}
// Present the autocomplete view controller when the button is pressed.
- (IBAction)onLaunchClicked:(id)sender {
GMSAutocompleteViewController *acController = [[GMSAutocompleteViewController alloc] init];
acController.delegate = self;
[self presentViewController:acController animated:YES completion:nil];
}
// Handle the user's selection.
- (void)viewController:(GMSAutocompleteViewController *)viewController
didAutocompleteWithPlace:(GMSPlace *)place {
[self dismissViewControllerAnimated:YES completion:nil];
// Do something with the selected place.
NSLog(@"Place name %@", place.name);
NSLog(@"Place address %@", place.formattedAddress);
NSLog(@"Place attributions %@", place.attributions.string);
}
- (void)viewController:(GMSAutocompleteViewController *)viewController
didFailAutocompleteWithError:(NSError *)error {
[self dismissViewControllerAnimated:YES completion:nil];
// TODO: handle the error.
NSLog(@"Error: %@", [error description]);
}
// User canceled the operation.
- (void)wasCancelled:(GMSAutocompleteViewController *)viewController {
[self dismissViewControllerAnimated:YES completion:nil];
}
// Turn the network activity indicator on and off again.
- (void)didRequestAutocompletePredictions:(GMSAutocompleteViewController *)viewController {
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
}
- (void)didUpdateAutocompletePredictions:(GMSAutocompleteViewController *)viewController {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
谁能告诉我，我在这里做错了什么？在不影响后台位置更新的情况下最好使用地点选择器，还是有任何其他方式来选择地点/位置，就像 ios 中的谷歌地点选择器？请帮助我或告诉我其他解决方案。
谢谢你！