Question

我想展开/折叠表视图部分。我用谷歌搜索并找到了一个代码并且工作正常。但问题是当打开一个新部分时，先前打开的部分没有关闭。谢谢

- (void)sectionHeaderTapped:(UITapGestureRecognizer *)gestureRecognizer{

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:gestureRecognizer.view.tag];
if (indexPath.row == 0) {
    BOOL collapsed  = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
    collapsed       =  !collapsed;
    [arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:collapsed]];
    //reload specific section animated
    NSRange range   = NSMakeRange(indexPath.section, 1);
    NSIndexSet *sectionToReload = [NSIndexSet indexSetWithIndexesInRange:range];
    [self.aTableView reloadSections:sectionToReload withRowAnimation:UITableViewRowAnimationFade];
}
}

我尝试了以下代码，但动画并不酷，因为所有部分都在重新加载。

NSMutableArray *isSectionTouched =[[NSMutableArray alloc]initWithCapacity:arrayForBool.count];
isSectionTouched=[arrayForBool mutableCopy];

for(int i = 1; i <[arrayForBool count] ; i ++){
    if(i != gestureRecognizer.view.tag){
        [isSectionTouched replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:NO]];
    }else{
        if ([[isSectionTouched objectAtIndex:gestureRecognizer.view.tag]boolValue]==YES) {
            [isSectionTouched replaceObjectAtIndex:gestureRecognizer.view.tag withObject:[NSNumber numberWithBool:NO]];
        }else if ([[isSectionTouched objectAtIndex:gestureRecognizer.view.tag]boolValue]==NO){
            [isSectionTouched replaceObjectAtIndex:gestureRecognizer.view.tag withObject:[NSNumber numberWithBool:YES]];
        }
    }
}
arrayForBool=isSectionTouched;
NSRange range   = NSMakeRange(1,arrayForBool.count - 1);
NSIndexSet *sectionToReload = [NSIndexSet indexSetWithIndexesInRange:range];
[self.tableView reloadSections:sectionToReload withRowAnimation:UITableViewRowAnimationFade];

Answer 1

在替换所选索引路径之前，迭代arrayForBool并将每个项目设置为NO。您可以持有一个属性来存储当前打开的部分索引，但除非您有数百个部分，否则它是不值得的。

扩展和折叠uitableView部分

1 个答案: