显示MKMap View附近的餐馆 [英] Showing nearby restaurants in MKMap View

问题描述

在我的iphone应用程序中，我必须在地图视图中显示附近的餐馆，目前我在网络视图中使用谷歌地图网址。

In my iphone app,I have to show near by restaurants in Map View,Currently I am using Google map url in a web view.

但我怎么能显示附近5000米当前位置的餐馆，其中包含原生MKMap视图（我发现我当前的位置 - 纬度和长度）

But how can I show nearby restaurants with in 5000 meters of current location with native MKMap view(I found out my current location-lat&long)

我想学习如何实现在下面的屏幕截图中（通过点击其细节的注释）

I would like to learn how to implement as in the below screen shot(by clicking the annotations going to its detail too)

任何帮助？提前谢谢

推荐答案

在iOS 6.1中，您可以使用 MKLocalSearch ，标准iOS MapKit.framework的一部分：

In iOS 6.1, you can use MKLocalSearch, part of the standard iOS MapKit.framework:

MKLocalSearchRequest *request = [[MKLocalSearchRequest alloc] init];
request.naturalLanguageQuery = @"restaurant";
request.region = mapView.region;

MKLocalSearch *localSearch = [[MKLocalSearch alloc] initWithRequest:request];
[localSearch startWithCompletionHandler:^(MKLocalSearchResponse *response, NSError *error) {

    NSMutableArray *annotations = [NSMutableArray array];

    [response.mapItems enumerateObjectsUsingBlock:^(MKMapItem *item, NSUInteger idx, BOOL *stop) {
        CustomAnnotation *annotation = [[CustomAnnotation alloc] initWithPlacemark:item.placemark];

        annotation.title = item.name;
        annotation.subtitle = item.placemark.addressDictionary[(NSString *)kABPersonAddressStreetKey];
        annotation.phone = item.phoneNumber;

        [annotations addObject:annotation];
    }];

    [self.mapView addAnnotations:annotations];
}];

我的自定义注释只是 MKPlacemark 加上标题和副标题：

My custom annotation is just a MKPlacemark plus a title and subtitle:

@interface CustomAnnotation : MKPlacemark

@property (strong, nonatomic) NSString *title;
@property (strong, nonatomic) NSString *subtitle;
@property (strong, nonatomic) NSString *phone;

@end

如果你想在你的标注上看到披露指标（所以你可以转换到另一个控制器来查看细节，你可以：

If you want to see the disclosure indicator on your callout (so you can transition to another controller to view the details, you can:

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
    if (![annotation isKindOfClass:[CustomAnnotation class]])
        return nil;

    MKAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
                                                                       reuseIdentifier:@"CustomAnnotationView"];
    annotationView.canShowCallout = YES;
    annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

    return annotationView;
}

如果要打开其他视图当用户点击标注附件时：

If you want to open your other view when the user clicks on the callout accessory:

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
    if (![view.annotation isKindOfClass:[CustomAnnotation class]])
        return;
    CustomAnnotation *annotation = (CustomAnnotation *)view.annotation;

    ABRecordRef person = ABPersonCreate();
    ABRecordSetValue(person, kABPersonOrganizationProperty, (__bridge CFStringRef) annotation.title, NULL);

    if (annotation.phone)
    {
        ABMutableMultiValueRef phoneNumberMultiValue = ABMultiValueCreateMutable(kABMultiStringPropertyType);
        ABMultiValueAddValueAndLabel(phoneNumberMultiValue, (__bridge CFStringRef) annotation.phone, kABPersonPhoneMainLabel, NULL);
        ABRecordSetValue(person, kABPersonPhoneProperty, phoneNumberMultiValue, nil);
        CFRelease(phoneNumberMultiValue);
    }

    ABMutableMultiValueRef address = ABMultiValueCreateMutable(kABMultiDictionaryPropertyType);
    ABMultiValueAddValueAndLabel(address, (__bridge CFDictionaryRef) annotation.addressDictionary, kABWorkLabel, NULL);
    ABRecordSetValue(person, kABPersonAddressProperty, address, NULL);
    ABUnknownPersonViewController *personView = [[ABUnknownPersonViewController alloc] init];

    personView.unknownPersonViewDelegate = self;
    personView.displayedPerson = person;
    personView.allowsAddingToAddressBook = YES;

    [self.navigationController pushViewController:personView animated:YES];

    CFRelease(address);
    CFRelease(person);
}

- (void)unknownPersonViewController:(ABUnknownPersonViewController *)unknownPersonView didResolveToPerson:(ABRecordRef)person
{

}

有关更多信息（例如，自定义注释视图，确定设备位置等），请参阅位置感知编程指南。

For more information (e.g. customizing the annotation views, determining device location, etc.), refer to the Location Awareness Programming Guide.

请参阅 https://github.com/robertmryan/MKMapView-custom-注释是一个简单的例子。

See https://github.com/robertmryan/MKMapView-custom-annotations for a simple example.

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