UIApplicaiton常用功能

 

设置icon上的数字图标

    //设置主界面icon上的数字图标，在2.0中引进， 缺省为0

    [UIApplicationsharedApplication].applicationIconBadgeNumber = 4;

 

判断程序运行状态

   if([UIApplicationsharedApplication].applicationState ==UIApplicationStateInactive){

        NSLog(@"程序在运行状态");

    }

阻止屏幕变暗进入休眠状态

    [UIApplicationsharedApplication].idleTimerDisabled =YES;

（慎重使用本功能，因为非常耗电）

在map上显示一个地址

   NSString* addressText =@"1 Infinite Loop, Cupertino, CA 95014";

   // URL encode the spaces

    addressText =  [addressTextstringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];

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

    [[UIApplicationsharedApplication]openURL:[NSURLURLWithString:urlText]];

发送电子邮件

   NSString *recipients =@"mailto:[email protected][email protected],[email protected]&subject=Hello from California!";

   NSString *body =@"&body=It is raining in sunny California!";

    NSString *email = [NSStringstringWithFormat:@"%@%@", recipients, body];

    email = [emailstringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    [[UIApplicationsharedApplication]openURL:[NSURLURLWithString:email]];

打电话到一个号码

    // Call Google 411

    [[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"tel://8004664411"]];

发送短信

    // Text to Google SMS

    [[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"sms://466453"]];

打开一个网址

   // Lanuch any iPhone developers fav site

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