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.

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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];

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

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

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

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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];
}

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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.