ios学习--openURL的使用方法

openURL的使用方法：

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[[UIApplication sharedApplication] openURL:[NSURL URLWithString:appString]];

其中系统的appString有：

1.Map http://maps.google.com/maps?q=Shanghai

2.Email mailto://myname@google.com

3.Tel tel://10086

4.Msg sms://10086

openURL能帮助你运行Maps，SMS，Browser,Phone甚至其他的应用程序。这是Iphone开发中我经常需要用到的一段代码，它仅仅只有一行而已。

- (IBAction)openMaps {

//打开地图

NSString*addressText = @"beijing";

//@"1Infinite Loop, Cupertino, CA 95014";

addressText =[addressTextstringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];

NSString*urlText = [NSStringstringWithFormat:@"http://maps.google.com/maps?q=%@",addressText];

NSLog(@"urlText=============== %@", urlText);

[[UIApplicationsharedApplication] openURL:[NSURL URLWithString:urlText]];

}

- (IBAction)openEmail {

//打开mail // Fire off an email to apple support

[[UIApplication sharedApplication]openURL:[NSURL URLWithString:@"mailto://devprograms@apple.com"]];

}



- (IBAction)openPhone {



//拨打电话

// CallGoogle 411

[[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"tel://8004664411"]];

}



- (IBAction)openSms {

//打开短信

// Text toGoogle SMS

[[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"sms://466453"]];

}

-(IBAction)openBrowser {

//打开浏览器

// Lanuch any iPhone developers fav site

[[UIApplication sharedApplication] openURL:[NSURLURLWithString:@"http://itunesconnect.apple.com"]];

}

iphone程序内调用谷歌地图

使用CLLocationManager类，MKMapView。并且实现<MKMapViewDelegate,CLLocationManagerDelegate>

//初始化CLLocationManager，CLLocationManager获得当前地理坐标

locmanager=[[CLLocationManager alloc]init];

[locmanager setDelegate:self];

//设置精确度

[locmanager setDesiredAccuracy:kCLLocationAccuracyBest];

[locmanager startUpdatingLocation];

执行完以后，会自动调用代理方法: