滚动时 TableView 滞后

伊尔万疯狂

我正在尝试实现像 facebook 或 twitter 时间线这样的表格。但是当我滚动时UITableView，它非常缓慢且滞后。我该如何解决这个问题？

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ViewControllerCell *cell = [tableView dequeueReusableCellWithIdentifier:@"htrcell"];
    if (cell==nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    NSDictionary *dataArray = [self.threndsArray objectAtIndex:indexPath.row];

    NSURL *url = [NSURL URLWithString:[dataArray objectForKey:@"pic_timeline"]];

    NSData *imgData = [NSData dataWithContentsOfURL:url];

    cell.upload_image.image =[UIImage imageWithData:imgData];

    NSURL *urlimage = [NSURL URLWithString:[dataArray objectForKey:@"pic_user"]];
    NSData *Dataimage = [NSData dataWithContentsOfURL:urlimage];
    cell.uploder_image.image =[UIImage imageWithData:Dataimage];
    cell.uploder_image.clipsToBounds = YES;
    cell.uploder_image.layer.cornerRadius = cell.uploder_image.frame.size.height /2;
    cell.uploder_image.layer.borderWidth = 2.0;
    cell.uploder_image.layer.borderColor = [UIColor whiteColor].CGColor;

    cell.uploder_name.text=[dataArray valueForKeyPath:@"nama_user"];

    cell.like_counter.text=[NSString stringWithFormat:@"%@",[dataArray valueForKeyPath:@"likes"]];

    cell.commenter_name.text=[dataArray valueForKeyPath:@"status_timeline"];

    cell.comments.text=[dataArray valueForKeyPath:@"tgl_timeline"];


    [cell setSelectionStyle:UITableViewCellSelectionStyleNone];

    return  cell;
}

尼勒什

最好的方法是SDWebImageView Download and Use Like Bellow ：

在 .h 中导入 2 个文件

#import "SDWebImage/UIImageView+WebCache.h"
#import "UIImageView+UIActivityIndicatorForSDWebImage.h"

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ViewControllerCell *cell = [tableView dequeueReusableCellWithIdentifier:@"htrcell"];
    if (cell==nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }
    NSDictionary *dataArray = [self.threndsArray objectAtIndex:indexPath.row];

    NSURL *url = [NSURL URLWithString:[dataArray objectForKey:@"pic_timeline"]];

    [cell.upload_image setImageWithURL:[dataArray objectForKey:@"pic_timeline"] placeholderImage:nil usingActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];

    cell.uploder_image.clipsToBounds = YES;
    cell.uploder_image.layer.cornerRadius =       cell.uploder_image.frame.size.height /2;
    cell.uploder_image.layer.borderWidth = 2.0;
    cell.uploder_image.layer.borderColor = [UIColor whiteColor].CGColor;


    cell.uploder_name.text=[dataArray valueForKeyPath:@"nama_user"];

    cell.like_counter.text=[NSString stringWithFormat:@"%@",[dataArray valueForKeyPath:@"likes"]];

    cell.commenter_name.text=[dataArray valueForKeyPath:@"status_timeline"];

    cell.comments.text=[dataArray valueForKeyPath:@"tgl_timeline"];


    [cell setSelectionStyle:UITableViewCellSelectionStyleNone];

    return  cell;
}

本文收集自互联网，转载请注明来源。

如有侵权，请联系 [email protected] 删除。