仿照iPhone实现电话，邮件，短信，博客功能

storyboard上创一个label--关于作者，Image View--导入一张图片, Text Viewxie写上文字 以及四个按钮打电话、发短信、写邮件、访博客

- (void)viewDidLoad {

[super
viewDidLoad];

self.textview.text
= @"清华大学\n中国总书记习近平\n中国常务委会李克强";

// Do any additional setup after loading the view, typically from a nib.
}

- (IBAction)tel:(id)sender {

[[UIApplication
sharedApplication] openURL:[NSURL
URLWithString:@"tel://15083315209"]];//调用打电话
}

- (IBAction)sms:(id)sender {

[[UIApplication
sharedApplication] openURL:[NSURL
URLWithString:@"sms://1286540207" ]];//发短信
}

- (IBAction)email:(id)sender {

[[UIApplication
sharedApplication]
openURL:[NSURL
URLWithString:@"mailto://yinc13@mail.tsinghua.edu.cn"]];//发邮件
}

- (IBAction)web:(id)sender {

[[UIApplication
sharedApplication] openURL:[NSURL
URLWithString:@"http://blog.csdn.net/?ref=toolbar_logo"]];//打开网页
}