我试过阅读google places API。并试图复制他们的工作。但我想我在这里错过了一些步骤。
以下是标头my header file的代码。
@class SPGooglePlacesAutocompleteQuery;
@interface GoogleMapViewViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchDisplayDelegate, UISearchBarDelegate, MKMapViewDelegate, UISearchControllerDelegate>
{
NSArray *searchResultPlaces;
SPGooglePlacesAutocompleteQuery *searchQuery;
MKPointAnnotation *selectedPlaceAnnotation;
BOOL shouldBeginEditing;
}
@property (strong, nonatomic) UISearchController *searchController;
@property (retain, nonatomic) IBOutlet MKMapView *mapView;
@end
我的实施档案
#import "GoogleMapViewViewController.h"
#import "SPGooglePlacesAutocompleteQuery.h"
#import "SPGooglePlacesAutocompletePlace.h"
@interface GoogleMapViewViewController ()
@property (weak, nonatomic) IBOutlet UISearchBar *searchBar;
@end
@implementation GoogleMapViewViewController
@synthesize mapView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
searchQuery = [[SPGooglePlacesAutocompleteQuery alloc] init];
searchQuery.radius = 100.0;
shouldBeginEditing = YES;
}
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.searchBar.placeholder = @"Search or Address";
self.searchBar.delegate = self;
}
- (void)viewDidUnload {
[self setMapView:nil];
[super viewDidUnload];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
#pragma mark -
#pragma mark UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [searchResultPlaces count];
}
- (SPGooglePlacesAutocompletePlace *)placeAtIndexPath:(NSIndexPath *)indexPath {
return [searchResultPlaces objectAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"SPGooglePlacesAutocompleteCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
cell.textLabel.font = [UIFont fontWithName:@"GillSans" size:16.0];
cell.textLabel.text = [self placeAtIndexPath:indexPath].name;
return cell;
}
#pragma mark UITableViewDelegate
- (void)recenterMapToPlacemark:(CLPlacemark *)placemark {
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.02;
span.longitudeDelta = 0.02;
region.span = span;
region.center = placemark.location.coordinate;
[self.mapView setRegion:region];
}
- (void)addPlacemarkAnnotationToMap:(CLPlacemark *)placemark addressString:(NSString *)address {
[self.mapView removeAnnotation:selectedPlaceAnnotation];
selectedPlaceAnnotation = [[MKPointAnnotation alloc] init];
selectedPlaceAnnotation.coordinate = placemark.location.coordinate;
selectedPlaceAnnotation.title = address;
[self.mapView addAnnotation:selectedPlaceAnnotation];
}
- (void)dismissSearchControllerWhileStayingActive {
// Animate out the table view.
NSTimeInterval animationDuration = 0.3;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:animationDuration];
self.searchDisplayController.searchResultsTableView.alpha = 0.0;
[UIView commitAnimations];
[self.searchDisplayController.searchBar setShowsCancelButton:NO animated:YES];
[self.searchDisplayController.searchBar resignFirstResponder];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
SPGooglePlacesAutocompletePlace *place = [self placeAtIndexPath:indexPath];
[place resolveToPlacemark:^(CLPlacemark *placemark, NSString *addressString, NSError *error) {
if (error) {
SPPresentAlertViewWithErrorAndTitle(error, @"Could not map selected Place");
} else if (placemark) {
[self addPlacemarkAnnotationToMap:placemark addressString:addressString];
[self recenterMapToPlacemark:placemark];
[self dismissSearchControllerWhileStayingActive];
[self.searchDisplayController.searchResultsTableView deselectRowAtIndexPath:indexPath animated:NO];
}
}];
}
#pragma mark UISearchDisplayDelegate
- (void)handleSearchForSearchString:(NSString *)searchString {
searchQuery.location = self.mapView.userLocation.coordinate;
searchQuery.input = searchString;
[searchQuery fetchPlaces:^(NSArray *places, NSError *error) {
if (error) {
SPPresentAlertViewWithErrorAndTitle(error, @"Could not fetch Places");
} else {
searchResultPlaces = places;
[self.searchDisplayController.searchResultsTableView reloadData];
}
}];
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[self handleSearchForSearchString:searchString];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
- (BOOL)searchController:(UISearchController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[self handleSearchForSearchString:searchString];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
#pragma mark UISearchBar Delegate
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if (![searchBar isFirstResponder]) {
// User tapped the 'clear' button.
shouldBeginEditing = NO;
[self.searchDisplayController setActive:NO];
[self.mapView removeAnnotation:selectedPlaceAnnotation];
}
}
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
if (shouldBeginEditing) {
// Animate in the table view.
NSTimeInterval animationDuration = 0.3;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:animationDuration];
self.searchDisplayController.searchResultsTableView.alpha = 1.0;
[UIView commitAnimations];
[self.searchDisplayController.searchBar setShowsCancelButton:YES animated:YES];
}
BOOL boolToReturn = shouldBeginEditing;
shouldBeginEditing = YES;
return boolToReturn;
}
#pragma mark MKMapView Delegate
- (MKAnnotationView *)mapView:(MKMapView *)mapViewIn viewForAnnotation:(id <MKAnnotation>)annotation {
if (mapViewIn != self.mapView || [annotation isKindOfClass:[MKUserLocation class]]) {
return nil;
}
static NSString *annotationIdentifier = @"SPGooglePlacesAutocompleteAnnotation";
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];
if (!annotationView) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationIdentifier];
}
annotationView.animatesDrop = YES;
annotationView.canShowCallout = YES;
UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[detailButton addTarget:self action:@selector(annotationDetailButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
annotationView.rightCalloutAccessoryView = detailButton;
return annotationView;
}
- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views {
// Whenever we've dropped a pin on the map, immediately select it to present its callout bubble.
[self.mapView selectAnnotation:selectedPlaceAnnotation animated:YES];
}
- (void)annotationDetailButtonPressed:(id)sender {
// Detail view controller application logic here.
}
@end
我现在对我的实现文件感到困惑，因为我无法真正理解TBH.plus中的内容，这里的一些代码大多已被弃用。有人关心给出详细的指导吗？或者以外行的名义向我解释。 TIA。
答案 0 :(得分：0)
ANSWERED！
基本上我的问题是在google places API的示例项目中给出的这个函数..
BOOL SPEnsureGoogleAPIKey() {
BOOL userHasProvidedAPIKey = YES;
if (![kGoogleAPIKey isEqualToString:@"AIzaSyA2vs9pJoLrLs6XU8IRVHo7WxiuMufYXl8"]) {
userHasProvidedAPIKey = NO;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"API Key Needed" message:@"Please replace kGoogleAPIKey with your Google API key." delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
[alert show];
}
return userHasProvidedAPIKey;
}
if语句最初是不正确的，这就是为什么它总是给我错误的值。现在它的工作:)只是添加了＆＃34;！＆＃34;在if