btn.enabled=NO;`
NSTimer * notificationTimer = [NSTimer scheduledTimerWithTimeInterval:10*60.0 target:selfselector:@selector(enable) userInfo:nil repeats:No];
-(void)enable { btn.enabled=YES; }
Xcode中设置按钮在十分钟之内禁用,布布扣,bubuko.com
原文：http://www.cnblogs.com/csshaw/p/3764596.html