Ios 长按 UITableView

发布于10月13日

我想在UITableViewCell上长按一下，打印一个"快速访问菜单". 是不是已经有人这么做了？

尤其是UITableView的手势？

推荐答案

首先，将长按手势识别器添加到表视图中:

UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] 
  initWithTarget:self action:@selector(handleLongPress:)];
lpgr.minimumPressDuration = 2.0; //seconds
lpgr.delegate = self;
[self.myTableView addGestureRecognizer:lpgr];
[lpgr release];

然后在手势处理程序中:

-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer
{
    CGPoint p = [gestureRecognizer locationInView:self.myTableView];

    NSIndexPath *indexPath = [self.myTableView indexPathForRowAtPoint:p];
    if (indexPath == nil) {
        NSLog(@"long press on table view but not on a row");
    } else if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
        NSLog(@"long press on table view at row %ld", indexPath.row);
    } else {
        NSLog(@"gestureRecognizer.state = %ld", gestureRecognizer.state);
    }
}

您必须小心这一点，这样才不会干扰用户正常点击单元格，还要注意handleLongPress可能会触发多次(这将是由于手势识别器状态更改所致).