继承自UITableViewController 需要往视图上添加固定按钮

继承自UITableViewController 需要添加按钮到最上层

发现self.view 添加的话 tableView滑动的时候 按钮也是跟着滑动的

#pragma mark 创建上架按钮悬浮按钮

-(void)creatDownBtn

{

    self.suspensionBtn = [UIButtonbuttonWithType:UIButtonTypeCustom];

    self.suspensionBtn.frame = CGRectMake(20,kScreenHeight -90,kScreenWidth -40,50);

    [self.suspensionBtnsetTitle:self.titleforState:UIControlStateNormal];

    self.suspensionBtn.layer.cornerRadius = 10;

    self.suspensionBtn.backgroundColor =KThemeColor;

    [self.suspensionBtnaddTarget:selfaction:@selector(grounding)forControlEvents:UIControlEventTouchUpInside];

    [self.tableViewaddSubview:self.suspensionBtn];

    [self.tableViewbringSubviewToFront:self.suspensionBtn];

    btnY = (int)self.suspensionBtn.frame.origin.y;

}

#pragma mark 实现代理方法固定悬浮按钮的位置

-(void)scrollViewDidScroll:(UIScrollView *)scrollView

{

    self.suspensionBtn.frame =CGRectMake(20,btnY+self.tableView.contentOffset.y , kScreenWidth - 40, 50);

}