ios 设置启动页面的时间

BOOL done;

-(void)timerFired:(NSTimer *)timer

{

    done=YES;

}

NSTimer  *connectionTimer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timerFired:) userInfo:nil repeats:NO];

    

    [[NSRunLoop currentRunLoop] addTimer:connectionTimer forMode:NSDefaultRunLoopMode];

    

       do{

           [[NSRunLoop currentRunLoop]runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]];

         }

       while (!done);