iOS.定位服务与地图应用.07.调用谷歌Web地图

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

@interface T20140621002009ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *txtQueryKey;

@property (weak, nonatomic) IBOutlet UITextView *txtView;

- (IBAction)geocodeQuery:(id)sender;

@end

#import "T20140621002009ViewController.h"

@interface T20140621002009ViewController ()

@end

@implementation T20140621002009ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


- (IBAction)geocodeQuery:(id)sender {
    
    if (_txtQueryKey.text == nil || [_txtQueryKey.text length] == 0) {
        return;
    }
    
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    [geocoder geocodeAddressString:_txtQueryKey.text completionHandler:^(NSArray *placemarks, NSError *error) {
        NSLog(@"查询记录数：%i",[placemarks count]);
        if ([placemarks count] > 0) {
            CLPlacemark* placemark = placemarks[0];
            
            CLLocationCoordinate2D coordinate = placemark.location.coordinate;
            
            
            NSString *urlString = [NSString stringWithFormat:
                                   @"http://maps.google.com/maps?q=%f,%f",
                                   coordinate.latitude,
                                   coordinate.longitude];
            
            NSURL *url = [NSURL URLWithString:urlString];
            
            [[UIApplication sharedApplication] openURL:url];
            
        }
    }];
    
    //关闭键盘
    [_txtQueryKey resignFirstResponder];
    
}

@end