openURL的使用(iOS調用系統電話、瀏覽器、地圖、郵件等)

今天遇見一行代碼實現打開一個網頁，比起印象裏的UIWebView控件實現簡單很多，很容易使用而且，經過真機測試卻是很方便使用,在網上又搜索了一點相關資料：

代碼段：[[UIApplication sharedApplication] openURL:url];

其中系統的url有：
1.Map    http://maps.google.com/maps?q=Shanghai  
2.Email  mailto://[email protected]  
3.Tel    tel://10086  
4.Msg    sms://10086  

- (IBAction)openMaps {
//打開地圖
NSString*addressText = @"beijing";
//@"1Infinite Loop, Cupertino, CA 95014";
addressText =[addressText stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];

NSString  *urlText = [NSString stringWithFormat:@"http://maps.google.com/maps?q=%@",addressText];
NSLog(@"urlText=============== %@", urlText);
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlText]];
}

- (IBAction)openEmail {
//打開mail // Fire off an email to apple support
[[UIApplication sharedApplication]openURL:[NSURL   URLWithString:@"mailto://[email protected]"]];
}

- (IBAction)openPhone {

//撥打電話
// Call Google 411
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://10086"]];
}

- (IBAction)openSms {
//打開短信
// Text toGoogle SMS
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://10086"]];
}

-(IBAction)openBrowser {
//打開瀏覽器
// Lanuch any iPhone developers fav site
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://blog.csdn.net/duxinfeng2010"]];
}

參考 http://www.cocoachina.com/bbs/read.php?tid=73570&page=3