How to stop reusing uitableviewCell? - ios

Question

Hi in my app i have to load images to UITableViewCell .which are coming from the server.so the problem is when ever i scroll the tableview images are loading every time and its loading lazy so i tried to stop reusing cells but its not working ,How to stop reusing the cells in UITableView.
my code is
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"Cell";
RestaurantCustomCell *cell =(RestaurantCustomCell*) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSArray *topLevelObjects ;
topLevelObjects= [[NSArray alloc]init];
if(cell==nil)
{
topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"RestaurantCustomCell" owner:self options:nil];
for(id currentObject in topLevelObjects)
{
if([currentObject isKindOfClass:[UITableViewCell class]])
{
cell = (RestaurantCustomCell *) currentObject;
break;
}
}
}
NSDictionary *dict=[restauarantsArr objectAtIndex:indexPath.row];
NSString *imgStr=[dict valueForKey:#"Img"];
[self processImageDataWithURLString:imgStr andBlock:^(NSData *imageData) {
if (self.view.window)
{
UIImage *img = [UIImage imageWithData:imageData];
if(img!=nil)
{
UIGraphicsBeginImageContext(CGSizeMake(100, 100));
[img drawInRect:CGRectMake(0,0,100,100)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
cell.restaurantImg.image=newImage;
UIGraphicsEndImageContext();
}
}
}];
cell.nameLbl.text=[dict valueForKey:#"Restaurants"];
cell.typeLbl.text=[dict valueForKey:#"Rest_Cuisine"];
cell.timingsLbl.text=[dict valueForKey:#"Rest_Timings"];
cell.categoryLbl.text=[dict valueForKey:#"Rest_Category"];
cell.addressLbl.text=[dict valueForKey:#"Address"];
return cell;
}

Answer 1

You can not doing this in default table view cell. If you want to create this kind of things then you need to create custom tableview cell anbd do it what you want.

Answer 2

You have to make a custom cell like that:
RestaurantCustomCell.h
#import <UIKit/UIKit.h>
#interface RestaurantCustomCell : UITableViewCell
#property (weak, nonatomic) IBOutlet UILabel *nameLbl;
#property (weak, nonatomic) IBOutlet UILabel *typeLbl;
#property (weak, nonatomic) IBOutlet UILabel *timingsLbl;
#property (weak, nonatomic) IBOutlet UILabel *categoryLbl;
#property (weak, nonatomic) IBOutlet UILabel *addressLbl;
#property (weak, nonatomic) IBOutlet UIImageView *restauranImg;
#end
RestaurantCustomCell.m
#import "RestaurantCustomCell.h"
#implementation RestaurantCustomCell
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
-(void)prepareForReuse{
self.nameLbl.text = #"";
self.typeLbl.text = #"";
self.timingsLbl.text = #"";
self.categoryLbl.text = #"";
self.addressLbl.text = #"";
}
#end
after in IB you add a new UITableViewCell at your UITableView and the class of it with you new custom cell set the Identify ID like "RestaurantCustomCell" add your labels and imageView to your custom cell and connect the Outlet, then you modify you tableView:cellForRowAtIndexPath: like that:
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier=#"RestaurantCustomCell";
RestaurantCustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSDictionary *dict=[restauarantsArr objectAtIndex:indexPath.row];
NSString *imgStr=[dict valueForKey:#"Img"];
[self processImageDataWithURLString:imgStr andBlock:^(NSData *imageData) {
if (self.view.window)
{
UIImage *img = [UIImage imageWithData:imageData];
if(img!=nil)
{
UIGraphicsBeginImageContext(CGSizeMake(100, 100));
[img drawInRect:CGRectMake(0,0,100,100)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
cell.restaurantImg.image=newImage;
UIGraphicsEndImageContext();
}
}
}];
cell.nameLbl.text=[dict valueForKey:#"Restaurants"];
cell.typeLbl.text=[dict valueForKey:#"Rest_Cuisine"];
cell.timingsLbl.text=[dict valueForKey:#"Rest_Timings"];
cell.categoryLbl.text=[dict valueForKey:#"Rest_Category"];
cell.addressLbl.text=[dict valueForKey:#"Address"];
return cell;