Learning(一)

1、如果iOS的系统是11.0，tableview下移64的解决办法

if (@available(iOS 11.0, *)) {

         self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;

  }else {

   self.automaticallyAdjustsScrollViewInsets = NO;

} 

self.tableView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);

2、cell上按钮传值

 当我们在一个自定义的tableView Cell上添加一个UIButton按钮时，点击按钮使用如下方法获取对应的indexPath。

 #pragma mark - 填写按钮动作/向下一个页面传值

 - (void)PracticeClick:(UIButton *)button{    

PractController *practice=[[PractController alloc]init];   

//1. 将button强转成你自定义cell类（ FollowCell是自定义cell）   

FollowCell *cell = (FollowCell *)[button superview];   

 //2.使用tableView indexPathForCell来获取对应的indexPath   

NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];  

//3.获取cell对应的indexPath就可以实现传值了   

 practice.model = self.dataSource[indexPath.row];   

 FollowModel * teamDescModel = [self.NofollowArr objectAtIndex:indexPath.row];   

 if ([teamDescModel.followupStatus isEqualToString:@"0"]) {       

    practice.task = teamDescModel.taskId;      

    practice.customer = teamDescModel.customerId;   

  }   

 [self.navigationController pushViewController:practice animated:YES];    

} 

3、设置label/Title按钮圆角(左上和右上)

 [self.Title.superview layoutIfNeeded]; 

UIRectCorner rectCorner = UIRectCornerTopLeft | UIRectCornerTopRight ;

 UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:self.Title.bounds byRoundingCorners:rectCorner cornerRadii:CGSizeMake(10, 10)]; 

 CAShapeLayer *shapeLayer = [CAShapeLayer layer];

shapeLayer.path = path.CGPath;

 self.Title.layer.mask = shapeLayer;

4、跳转到指定界面

PlusOneVC是要跳转的界面

PlusOneVC *plusVC = [[PlusOneVC alloc] init];

for (UIViewController *temp in self.navigationController.viewControllers) {

    if ([temp isKindOfClass:[PlusOneVC class]]) {

        [self.navigationController popToViewController:plusVC animated:YES];         

      }      

}