逆ジオ - objcmemo @ ウィキ

// 対象となる緯度経度データ
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(latitude.doubleValue, longitude.doubleValue);

// 緯度経度データから住所（文字列）を取得する
typeof(self) __weak wself = self;
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
CLLocation *location = [[CLLocation alloc] initWithLatitude:coordinate.latitude longitude:coordinate.longitude];
[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray* placemarks, NSError* error) {
    
    if (error) {
        
        NSLog(@"%@", error.description);
        
        typeof(self) __weak wself = self;
        dispatch_async(dispatch_get_main_queue(), ^{
            [CommonClass showWithTitle:@""
                               message:@"アドレス情報が取得できませんでした。"
                     cancelButtonTitle:@"OK"
                     otherButtonTitles:nil
                        viewController:wself
                              tapBlock:nil];
        });
        
        return;
    }
    
    if (placemarks.count == 0) {
        
        NSLog(@"No results were returned.");
        
        typeof(self) __weak wself = self;
        dispatch_async(dispatch_get_main_queue(), ^{
            [CommonClass showWithTitle:@""
                               message:@"アドレス情報が取得できませんでした。"
                     cancelButtonTitle:@"OK"
                     otherButtonTitles:nil
                        viewController:wself
                              tapBlock:nil];
        });
        
        return;
    }
    
    for (CLPlacemark *placemark in placemarks) {
        
#if TRUE
        
        NSString *addressString = @"";
        NSDictionary *dict = placemark.addressDictionary;
        
        NSArray *lines = dict[@"FormattedAddressLines"];
        for (NSString *line in lines) {
            addressString = [addressString stringByAppendingFormat:@"%@", line];
        }
        
        // 郵便番号があれば除去する
        NSString *zip = [NSString stringWithObject:dict[@"ZIP"]];
        addressString = [addressString stringByReplacingOccurrencesOfString:@"〒" withString:@""];
        addressString = [addressString stringByReplacingOccurrencesOfString:zip withString:@""];
        
        // 住所であるので、URLエンコードを忘れないこと！
        addressString = [NSString urlEncodeWithStirng:addressString];
        
#else
        
        // こちらの方法で住所を取得すると、一部重複して取得することがある
        NSMutableString *mAddrStr = [NSMutableString new];
        [mAddrStr appendFormat:@"%@", (placemark.administrativeArea) ? placemark.administrativeArea: @""];
        [mAddrStr appendFormat:@"%@", (placemark.subAdministrativeArea) ? placemark.subAdministrativeArea: @""];
        [mAddrStr appendFormat:@"%@", (placemark.locality) ? placemark.locality: @""];
        //[str appendFormat:@"%@", (placemark.subLocality) ? placemark.subLocality: @""];
        [mAddrStr appendFormat:@"%@", (placemark.thoroughfare) ? placemark.thoroughfare: @""];
        [mAddrStr appendFormat:@"%@", (placemark.subThoroughfare) ? placemark.subThoroughfare: @""];
        
        // 住所であるので、URLエンコードを忘れないこと！
        NSString *addressString = [NSString urlEncodeWithStirng:mAddrStr];
        
#endif
        
        NSString *latitude = [NSString stringWithFormat:@"%f", coordinate.latitude];
        NSString *longitude = [NSString stringWithFormat:@"%f", coordinate.longitude];
        NSString *coordiateString = [NSString stringWithFormat:@"%@,%@", latitude, longitude];
        
        NSString *urlString = [NSString stringWithFormat:@"http://maps.google.co.jp/maps?"
                               @"f=q"       // 左枠：通常（デフォルト）
                               @"&"
                               @"hl=ja"     // 言語：日本
                               @"&"
                               @"z=20"      // ズーム（０〜２０）
                               @"&"
                               @"q=%@"      // 地名 or 緯度経度（吹き出し表示位置）
                               @"&"
                               @"ll=%@"     // 緯度経度（地図の中心地）
                               @"&"
                               @"iwloc=A"   // 吹き出し表示（出せる場合だけ？）
                               ,
                               addressString,
                               coordiateString];
        wself.googleMapURL = urlString;
        NSLog(@"urlString : %@", urlString);
        
        // URLを使用しての何らかの連携処理
        
        
        // 複数取得する場合があるが、先頭のデータを候補とする （どれが適切か判定できない為）
        break;
    }
}];