Wait X sec on cocoa

waitXsec.m

// X sec 待つ
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:2]];


// アニメーション開始時刻を遅らせる場合
view.alpha     = 1.0f;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDelay:3]; // 3sec
[UIView setAnimationDuration:2.0];    
view.alpha     = 0.0f;
[UIView commitAnimations];