1

我需要一些帮助。今天，我正在处理表格视图自定义单元格，其中单元格包含一个UIImageView. 在 ImageView 上，我想实现长手势。我为此实现了下面给出的代码..但是我在代码中做错了。在此视图中长按一次调整大小但我希望在几秒钟后可以将其删除并返回表格视图单元格可以有人推荐我吗？？？

更新：

长手势图片

这是代码！

- (void)celllongpressed:(UILongPressGestureRecognizer *)gesture
{

if (gesture.state == UIGestureRecognizerStateBegan)
{
    cell = (ActivityFeedCell *)[gesture view];
}
if (gesture.state == UIGestureRecognizerStateChanged)
{
    cell = (ActivityFeedCell *)[gesture view];
    logGes_view=[[UIView alloc]initWithFrame:CGRectMake(5, 0,self.view.frame.size.width-10,self.view.frame.size.height)];
    image=[[UIImageView alloc]initWithFrame:CGRectMake(0, 80,self.view.frame.size.width, self.view.frame.size.height-80)];
    image.image=cell.updated_imgView.image;
    UILabel *name_label=[[UILabel alloc]initWithFrame:CGRectMake(10, 15, 150, 30)];
    //city_label.backgroundColor=[UIColor yellowColor];
    name_label.text=lgGesNamelbl;
    UILabel *city_label=[[UILabel alloc]initWithFrame:CGRectMake(10, 50, 180, 30)];
    //city_label.backgroundColor=[UIColor yellowColor];
    city_label.text=lgGesCitylbl;
    [logGes_view addSubview:city_label];
      [logGes_view addSubview:name_label];
    [logGes_view addSubview:image];
    logGes_view.backgroundColor=[UIColor whiteColor];
    [self.view addSubview:logGes_view];
}
if (gesture.state == UIGestureRecognizerStateEnded)
{
   // cell = (ActivityFeedCell *)[gesture view];
    [logGes_view removeFromSuperview];
}
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UILongPressGestureRecognizer *gesture1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(celllongpressed:)];
[gesture1 setDelegate:self];
[gesture1 setMinimumPressDuration:1.0];
[ cell setUserInteractionEnabled:YES];
[cell addGestureRecognizer:gesture1];
}
4

3 回答 3

0 
        UILongPressGestureRecognizer *reconizer=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPress:)];
                   [reconizer setMinimumPressDuration:1.0];
                 [cell addGestureRecognizer:reconizer];


-(void)handleLongPress:(UILongPressGestureRecognizer*)reconizer
{
if (gesture.state == UIGestureRecognizerStateBegan)
{
    UITableViewCell *cell = (UITableViewCell *)[gesture view];
    NSIndexPath *indexPath = [tableview indexPathForCell:cell];
    NSString *s = [NSString stringWithFormat: @"row=%1ld",(long)indexPath.row];
    [self setTitle: s];
}
if (gesture.state == UIGestureRecognizerStateChanged)
{
 cell = (UITableViewCell *)[gesture view];
    cell.updated_imgView.frame=CGRectMake(0, 0, tableview.frame.size.width, tableview.frame.size.height);
       }
if (gesture.state == UIGestureRecognizerStateEnded)
{
 cell = (UITableViewCell *)[gesture view];
    cell.updated_imgView.frame=CGRectMake(0, 0, 100, 100);
}

}

-(BOOL)canBecomeFirstResponder
{
    return YES;
}
于 2016-07-27T11:25:37.087 回答
-1 
[cell addGestureRecognizer:gesture1]

用下面的行替换

[ cell.yourimageview setUserInteractionEnabled:YES];  // This enable user interaction on the image view. Required!!


[cell.yourimageview addGestureRecognizer:gesture1];  //yourimageview is your image outlet
于 2016-07-27T11:05:49.453 回答
-1

试试看：Cell 是 imageView 的 superView，所以改变大小时它不会跨单元格框架，在调整大小后将其添加到 mainView。

于 2016-07-27T12:31:25.453 回答