UITableView scrolling crashes app

When i scroll UITableView it crashes the app开发者_如何学JAVA. Here is code.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSDictionary *tempDict = [albums objectAtIndex:indexPath.row];

static NSString *CellIdentifier = @"ImageCell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
   cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; 
} else {
    AsyncImageView *oldImage = (AsyncImageView *)[cell.contentView viewWithTag:999];
    [oldImage removeFromSuperview];
}

I set the breakpoints and it stops at line

NSDictionary *tempDict = [albums objectAtIndex:indexPath.row];

What am i doing wrong? Thanks in advance.

I am not sure, first of all please check the total number of rows and your array count. They must be same. If still it crashes then put this line

NSDictionary *tempDict = [[albums objectAtIndex:indexPath.row] copy];

Check size of albums array. May be it is smaller then indexPath.row or it was released somewhere.

Make sure you are not reading out of bounds of your NSdictionary.

Check your return value in the tableView:numberOfRowsInSection: dataSource method.

The most likely reason for a crash on that line is that your table view has more rows than you have items in your albums array. Normally, in a setup like this, you'd have exactly the same number of rows in your table, and your implementation of –tableView:numberOfRowsInSection: would look like this

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    // assuming that there is only one section
    return [albums count];
}

I solved this problem. Actually in the $cellForRow ,I was trying to get information from server, I did not apply lazy loading there. Because of that while scrolling the tableView, app was crashing.

Thank you to all for your help.