Question

我在列表视图中从Web服务获取图像，但我想在网格中显示它们视图。当我在列表视图中显示图像时，在网格视图中我该怎么做？请帮忙。这是我的代码的样子： -

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    NSString *CELLIDENTIFIER=@"CELL";
    UITableViewCell *cell=nil;
    if (cell==nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CELLIDENTIFIER] autorelease];
        CGRect imageFrame = CGRectMake(2, 8, 80, 60);
        NSURL *url = [NSURL URLWithString:[arrayListG objectAtIndex: [indexPath row]]];
        NSData *data = [NSData dataWithContentsOfURL:url];
        UIImage *img = [[[UIImage alloc] initWithData:data] autorelease];
        UIImageView *customImage = [[[UIImageView alloc] initWithFrame:imageFrame] autorelease];

        customImage.image=img;
        [cell.contentView addSubview:customImage];
    }

    return cell;
}

Answer 1

最好将这个非常棒的库用于gridview 如何在项目中实施和集成所有内容都记录在此链接上。check this out AQGridview

Answer 2

Gridview = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0, 320, 480)];//your frame        
Gridview.backgroundColor=[UIColor clearColor];
int row=0;
int column=0;
int rows=4;
int cols=5;
for (int i=0; i<rows*cols; i++)
{
    if((row%4==0)&&(row>0))
    {
        row=0;
        column++;
    } 
    else{
        row++; 
    }
CGRect imageFrame = CGRectMake(row*80+10, column*60+10, 80, 60);//your imageview frame
    NSURL *url = [NSURL URLWithString:[arrayListG objectAtIndex:i]];
    NSData *data = [NSData dataWithContentsOfURL:url];
    UIImage *img = [[[UIImage alloc] initWithData:data] autorelease];
    UIImageView *customImage = [[[UIImageView alloc] initWithFrame:imageFrame] autorelease];

    customImage.image=img;
    [Gridview addSubView:customImage];

}
[Gridview setContentSize:CGSizeMake(rows*90, cols*70)];

Gridview是你的scrollview将它添加到IB或以编程方式添加，因为在我的情况下我已经以编程方式添加它。根据您的要求设置内容大小和框架

Answer 3

请修改您的代码，如下所示。

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    NSString *CELLIDENTIFIER=@"CELL";
    UITableViewCell *cell=nil;
    if (cell==nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CELLIDENTIFIER];

        CGRect imageFrame = CGRectMake(2, 8, 80, 60);
        UIImageView *customImage = [[UIImageView alloc] initWithFrame:imageFrame];
        customImage.tag = 1;
        [cell.contentView addSubview:customImage];
    }
    UIImageView *customImage = (UIImageView *)[cell viewWithTag:1];

    NSURL *url = [NSURL URLWithString:[arrayListG objectAtIndex: [indexPath row]]];
    NSData *data = [NSData dataWithContentsOfURL:url];
    UIImage *img = [[UIImage alloc] initWithData:data];
    customImage.image =img;

    return cell;
}

Answer 4

你可以尝试UIcollectionView一个新的ios控件，它类似于UItabel视图，易于集成。请查看这些链接

http://ashfurrow.com/blog/uicollectionview-example

http://www.raywenderlich.com/22324/beginning-uicollectionview-in-ios-6-part-12

如何在网格视图中显示来自Web服务的图像

4 个答案: