新手请教，如何让下面的代码延迟10秒再执行？

Question

- (void)viewWillAppear:(BOOL)animated 
{      
        CGPoint newPos = simpleLayer_.position;
        newPos.y += 1.;
        simpleLayer_.position = newPos;        
        [simpleLayer_ setNeedsDisplay];     
 
 }

Answer 1

- (void)viewWillAppear:(BOOL)animated  
{   
[self performSelector:@selector(initContentView) withObject:nil afterDelay:10]; 
 }
－(void)initContentView
{
  CGPoint newPos = simpleLayer_.position;
  newPos.y += 1.;
  simpleLayer_.position = newPos;   
  [simpleLayer_ setNeedsDisplay];   
}