我使用隐藏的微调器和隐藏文本“加载更多”创建了一个自定义单元格。对于最后一个单元格,这些字段将被取消隐藏,以便用户可以单击它以请求更多数据。我有它,所以当用户点击最后一个单元格时,微调器启动,但是当用户将单元格滚出视图并再次返回时,不会显示微调器。任何帮助将不胜感激。:)
我有一个自定义单元格,它是UITableViewCell的子类:
@interface BrowseListCell : UITableViewCell{
IBOutlet UIImageView *image;
IBOutlet UILabel *name;
IBOutlet UILabel *loadMore;
IBOutlet UIActivityIndicatorView *spinner;
}
@property(nonatomic, retain) UIImageView *image;
@property(nonatomic, retain) UILabel *name;
@property(nonatomic, retain) UILabel *loadMore;
@property(nonatomic, retain) UIActivityIndicatorView *spinner;
@end
在tableViewController中我有:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//#warning Incomplete method implementation.
// Return the number of rows in the section.
return [_dataController countOfList]+1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Configure the cell...
static NSString *CellIdentifier = @"BrowseListCell";
BrowseListCell *cell = (BrowseListCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
[[NSBundle mainBundle] loadNibNamed:CellIdentifier owner:self options:nil];
cell = [_cell autorelease];
_cell = nil;
}
if(indexPath.row==[_dataController countOfList]){
if (indexPath.row==0) {
cell.name.text=nil;
cell.image.image = nil;
cell.loadMore.hidden = YES;
return cell;
}else{
cell.name.text=nil;
cell.image.image = nil;
cell.loadMore.hidden = NO;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
_spinner = [cell.spinner retain];
_loadCell = [cell retain];
return cell;
}
}
if(_dataController!=nil){
BrowseProduct *productAtIndex = [_dataController objectInListAtIndex:indexPath.row];
// Configure the cell...
if(productAtIndex!=nil){
cell.name.text = productAtIndex.name;
cell.image.image = productAtIndex.image;
cell.loadMore.hidden=YES;
}
}
return cell;
}
在didSelectRowAtIndexPath里面我有:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row==[_dataController countOfList]){
if (indexPath.row==0) {
//do nothing
}else{
NSLog(@"Loading");
[_spinner startAnimating];
_loadCell.userInteractionEnabled = NO;
NSString *startFromId = [NSString stringWithFormat:@"%d", [_dataController countOfList]];
NSNotification *notification = [NSNotification notificationWithName:@"loadMore" object:startFromId];
[[NSNotificationCenter defaultCenter]postNotification:notification];
}
}
}
答案 0 :(得分:1)
答案 1 :(得分:1)
为cellForRowAtIndexPath添加了以下内容:
if(spinnerIsOn){
[_spinner startAnimating];
}else{
[_spinner stopAnimating];
}
在reloadTableViewData中添加了以下内容:
spinnerIsOn=NO;
在didSelectRowAtIndexPath中添加了以下内容:
spinnerIsOn = TRUE;
答案 2 :(得分:0)
您也可以继承layoutSubviews
- (void)layoutSubviews{
[super layoutSubviews];
[self.spinner startAnimating];
}
答案 3 :(得分:0)
我遇到了同样的问题。解决方案:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.spinner.startAnimating()
// populate data, for instance: download an image from the net
cell.spinner.stopAnimating()
return cell
}
当然,spinner.hidesWhenStopped
必须为true
,这是默认设置。