how can i remove data from my table view on a button click?
how can i remove datas from my table vie on a button click. i added 5 images in to my table view .next time i am adding only 3 images but the last 4 and 5 images will not remove from my table view . can any one provide me开发者_如何学运维 a good way to do it.
my code is
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
if(indexPath.row == 0)
{
UIImageView *imageView1 = [[UIImageView alloc] initWithFrame:CGRectMake(0,5,100,125)];
if([imageArray count]>0)
{
imageView1.image = [imageArray objectAtIndex:0];
[cell.contentView addSubview:imageView1];
[imageView1 release];
}
if([imageArray count]>1)
{
UIImageView *imageView2 = [[UIImageView alloc] initWithFrame:CGRectMake(150,5,100,125)];
imageView2.image = [imageArray objectAtIndex:1];
[cell.contentView addSubview:imageView2];
[imageView2 release];
}
if([imageArray count]>2)
{
UIImageView *imageView3 = [[UIImageView alloc] initWithFrame:CGRectMake(310, 5, 100, 125)];
imageView3.image = [imageArray objectAtIndex:2];
[cell.contentView addSubview:imageView3];
[imageView3 release];
}
if([imageArray count]>3)
{
UIImageView *imageView4 = [[UIImageView alloc] initWithFrame:CGRectMake(460,5,100,125)];
imageView4.image = [imageArray objectAtIndex:3];
[cell.contentView addSubview:imageView4];
[imageView4 release];
}
}
else if(indexPath.row == 1)
{
if([imageArray count]>4)
{
UIImageView *imageView5 = [[UIImageView alloc] initWithFrame:CGRectMake(0,5,100,125)];
imageView5.image = [imageArray objectAtIndex:4];
[cell.contentView addSubview:imageView5];
[imageView5 release];
}
if([imageArray count]>5)
{
UIImageView *imageView6 = [[UIImageView alloc] initWithFrame:CGRectMake(150,5,100,125)];
imageView6.image = [imageArray objectAtIndex:5];
[cell.contentView addSubview:imageView6];
[imageView6 release];
}
if([imageArray count]>6)
{
UIImageView *imageView7= [[UIImageView alloc] initWithFrame:CGRectMake(310, 5, 100, 125)];
imageView7.image = [imageArray objectAtIndex:6];
[cell.contentView addSubview:imageView7];
[imageView7 release];
}
and on a button click i am removing all object from my array. and adding only 3 images to it. then calling myTableView.reloadData();
but the first three is changing and remaining 4 & 5 are still there not removing.
Just a hunch, but you might want to check your implementation of tableView:numberOfRowsInSection:
Please post that if you're still having trouble.
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