//显示 
- (void) show:(UIView*)parent 
{ 
  parentView = parent; 
   
  //先隐藏backView,table 
  backView.alpha = 0; 
  _table.alpha = 0; 
   
  //移动table 
  [_table setTransform:CGAffineTransformMakeTranslation(0, _table.frame.size.height)]; 
   
  //父窗口添加本view，---这个会调用viewDidLoad 
  [parentView.superview addSubview:self.view]; 
   
  //添加动画，添加到父窗口中，使之从下移动上 
  [UIView animateWithDuration:0.3 animations:^{ 
    //父窗口缩小 
    CGAffineTransform t = CGAffineTransformMakeScale(0.9, 0.9); 
    [parentView setTransform:t]; 
     
    //显示backview,table 
    backView.alpha = 1; 
    _table.alpha = 1; 
     
    //移动table,CGAffineTransformIdentity还原原始坐标 
    [_table setTransform:CGAffineTransformIdentity]; 
 
  } completion:^(BOOL finished) { 
     
  }]; 
   
   
} 
//隐藏 
- (void) hide 
{ 
  //添加动画，添加到父窗口中，使之从下移动上 
  [UIView animateWithDuration:0.3 animations:^{ 
    //父窗口还原  
    CGAffineTransform t = CGAffineTransformIdentity; 
    [parentView setTransform:t]; 
     
    //显示backview,table 
    backView.alpha = 0; 
    _table.alpha = 0; 
     
    //移动table 
    [_table setTransform:CGAffineTransformMakeTranslation(0, _table.frame.size.height)]; 
     
  } completion:^(BOOL finished) { 
    [self.view removeFromSuperview]; 
  }]; 
} 
 
- (void)viewDidLoad 
{ 
  [super viewDidLoad]; 
   
  self.view.backgroundColor = [UIColor clearColor]; 
   
  //背影黑罩 
  backView = [[UIView alloc]initWithFrame:self.view.bounds]; 
  backView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3]; 
  [self.view addSubview:backView]; 
   
  //算出table的CGRect 
  CGRect rect = self.view.bounds; 
  int height = _titleArray.count * 44; 
  rect.origin.y = rect.size.height - height; 
  rect.size.height = height; 
   
  _table = [[UITableView alloc]initWithFrame:rect]; 
  _table.delegate = self; 
  _table.dataSource = self; 
  [self.view addSubview:_table]; 
 
}