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"]];