My UITableView won't scroll down through the e

2019-02-08 06:11发布

Ok I don't know why this isn't working, but I have hooked up a tableView, with 19 items of text I'd like to set to each cell.

The cells populate just fine, but when I try and scroll, it goes down there and I can see the cells that aren't visible on the initial view, it hangs, and won't scroll down. It just snaps back. REALLY WEIRD!

What am I doing wrong?

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section    {
// Return the number of rows in the section.
return 19;
}


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}

// Configure the cell...
if(indexPath.row == 0){
    cell.textLabel.text = @"";
}else if(indexPath.row == 1){
    cell.textLabel.text = @"";
}else if(indexPath.row == 2){
    cell.textLabel.text = @"";
}else if(indexPath.row == 3){
    cell.textLabel.text = @"";
}else if(indexPath.row == 4){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 5){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 6){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 7){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 8){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 9){
    cell.textLabel.text = @"";
}else if(indexPath.row == 10){
    cell.textLabel.text = @"";
}else if(indexPath.row == 11){
    cell.textLabel.text = @"";
}else if(indexPath.row == 12){
    cell.textLabel.text = @"";
}else if(indexPath.row == 13){
    cell.textLabel.text = @"";
}else if(indexPath.row == 14){
    cell.textLabel.text = @"";
}else if(indexPath.row == 15){
    cell.textLabel.text = @"";
}else if(indexPath.row == 16){
    cell.textLabel.text = @"";
}else if(indexPath.row == 17){
    cell.textLabel.text = @"";
}else if(indexPath.row == 18){
    cell.textLabel.text = @"";
}

return cell;
}

8条回答
Deceive 欺骗
2楼-- · 2019-02-08 07:02

I had the same problem.

Check the number of the row that you can't see.

After in your viewDidLoad, add this method:

myTableView.contentInset = UIEdgeInsets(top: 0,left: 0,bottom: yourCellHeight * rowHeight,right: 0)

I hope I have been helpful

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成全新的幸福
3楼-- · 2019-02-08 07:03

I know it's an old question and this is not an answer to your question, but a suggestion to improve your code so others can benefit.

You could write this:

if (indexPath.row >= 4 && indexPath.row <= 8) { // 4 and 8 inclusive
    cell.indentationLevel = 2;
}
cell.textLabel.text = @"";


Instead of this:

if(indexPath.row == 0){
    cell.textLabel.text = @"";
}else if(indexPath.row == 1){
    cell.textLabel.text = @"";
}else if(indexPath.row == 2){
    cell.textLabel.text = @"";
}else if(indexPath.row == 3){
    cell.textLabel.text = @"";
}else if(indexPath.row == 4){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 5){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 6){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 7){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 8){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 9){
    cell.textLabel.text = @"";
}else if(indexPath.row == 10){
    cell.textLabel.text = @"";
}else if(indexPath.row == 11){
    cell.textLabel.text = @"";
}else if(indexPath.row == 12){
    cell.textLabel.text = @"";
}else if(indexPath.row == 13){
    cell.textLabel.text = @"";
}else if(indexPath.row == 14){
    cell.textLabel.text = @"";
}else if(indexPath.row == 15){
    cell.textLabel.text = @"";
}else if(indexPath.row == 16){
    cell.textLabel.text = @"";
}else if(indexPath.row == 17){
    cell.textLabel.text = @"";
}else if(indexPath.row == 18){
    cell.textLabel.text = @"";
}


And if you happen to have different text for each case you could either use:

switch (indexPath.row) {
    case 0:
        cell.textLabel.text = @"";
        break;
        ...
    case 18:
        cell.textLabel.text = @"";
    default:
        break;
}

Or even better to put everything inside an NSArray (database...) and just loop through them by the index.

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