已经有1周了,我仍然停留在PFImageView上。我重做了一切。从UITableView更改为PFQueryTableView,然后尝试使用UITableViewCell,然后使用PFTableViewCell显示图像,并且在每种方法中,只有能显示的东西才是标签。每当我运行我的应用程序时,都会由于以下原因而崩溃(SIGABRT):
崩溃线
cell.imagevieww.file= [object objectForKey:@"ImageURL"];
[cell.imagevieww loadInBackground];
谁能帮我解决这个问题?非常感谢
TableViewController.h
#import <Parse/Parse.h>
#import "Customcell.h"
#import "DetailViewController.h"
@interface TableeViewController : PFQueryTableViewController {
NSArray *colorsArray;
}
@property (strong, nonatomic) IBOutlet UITableView *colorsTable;
@end
TableViewController.m
#import "TableeViewController.h"
#import "TableViewCell.h"
#import "DetailViewController.h"
@interface TableeViewController ()
@end
@implementation TableeViewController
@synthesize colorsTable;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// The className to query on
self.parseClassName = @"Hracky1";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = NO;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject
*)object {
static NSString *CellIdentifier = @"colorsCell";
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell == nil) {
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.imagevieww.file= [object objectForKey:@"ImageURL"];
[cell.imagevieww loadInBackground];
cell.cellTitle.text = [object objectForKey:@"cellTitle"];
cell.cellDescript.text = [object objectForKey:@"cellDescript"];
return cell;
}
@end
Customcell.h
#import <Parse/Parse.h>
@interface TableViewCell : PFTableViewCell
@property (strong, nonatomic) IBOutlet UILabel *cellTitle;
@property (strong, nonatomic) IBOutlet UILabel *cellDescript;
@property (strong, nonatomic) IBOutlet UILabel *price;
@property (strong, nonatomic) IBOutlet PFImageView *imagevieww;
@end
最佳答案
PFImageView
仅链接到存储在Parse.com上并由PFFile
对象表示的文件。您不能将cell.imagevieww.file
设置为字符串并使之起作用。
如果您使用普通URL来访问网络上的任意图像,则应对单元格上的图像视图使用SDWebImage
(或类似的通用解决方案)。
使用SDWebImage
您将替换:
cell.imagevieww.file= [object objectForKey:@"ImageURL"];
[cell.imagevieww loadInBackground];
与:
[cell.imagevieww setImageWithURL:[NSURL URLWithString:[object objectForKey:@"ImageURL"]]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];