设置Table Cell的背景图的公用类
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface UITableViewCell (UITableViewCellExt)
- (void)setBackgroundImage:(UIImage*)image;
- (void)setBackgroundImageByName:(NSString*)imageName;
@end
#import "UITableViewCellExt.h"
@implementation UITableViewCell (UITableViewCellExt)
- (void)setBackgroundImage:(UIImage*)image
{
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.contentMode = UIViewContentModeCenter;
self.backgroundView = imageView;
[imageView release];
}
- (void)setBackgroundImageByName:(NSString*)imageName
{
[self setBackgroundImage:[UIImage imageNamed:imageName]];
}
@end
调用示例:
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
[cell setBackgroundImageByName:@"text-background.png"];
}
return cell;
}
#import <UIKit/UIKit.h>
@interface UITableViewCell (UITableViewCellExt)
- (void)setBackgroundImage:(UIImage*)image;
- (void)setBackgroundImageByName:(NSString*)imageName;
@end
#import "UITableViewCellExt.h"
@implementation UITableViewCell (UITableViewCellExt)
- (void)setBackgroundImage:(UIImage*)image
{
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.contentMode = UIViewContentModeCenter;
self.backgroundView = imageView;
[imageView release];
}
- (void)setBackgroundImageByName:(NSString*)imageName
{
[self setBackgroundImage:[UIImage imageNamed:imageName]];
}
@end
调用示例:
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
[cell setBackgroundImageByName:@"text-background.png"];
}
return cell;
}
本文介绍了一个UITableViewCell的扩展方法,用于自定义UITableViewCell的背景图片。通过简单的接口调用即可实现单元格背景图的设置。
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