新浪微博客户端(31)-显示相册图片上的GIF标记-优快云博客

本文介绍了一个名为DJStatusPhotoView的自定义UIView类，该类继承自UIImageView并用于显示图片，支持从URL加载图片及根据图片类型显示GIF标识。

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DJStatusPhotoView.h

#import <UIKit/UIKit.h>

@class DJPhoto;
@interface DJStatusPhotoView : UIImageView

@property (nonatomic,strong) DJPhoto *photo;

@end

DJStatusPhotoView.m

#import "DJStatusPhotoView.h"
#import "UIImageView+WebCache.h"
#import "DJPhoto.h"



@interface DJStatusPhotoView()

// GIF标记
@property (nonatomic,weak) UIImageView *gifView;

@end


@implementation DJStatusPhotoView


- (UIImageView *)gifView {


    if (!_gifView) {
        UIImage *gifImage = [UIImage imageNamed:@"timeline_image_gif"];
        UIImageView *gifView = [[UIImageView alloc] initWithImage:gifImage];
        [self addSubview:gifView];
        _gifView = gifView;
    }
    return _gifView;
}




- (void)setPhoto:(DJPhoto *)photo {

    _photo = photo;

    // 设置显示图片
    [self sd_setImageWithURL:[NSURL URLWithString:photo.thumbnail_pic] placeholderImage:[UIImage imageNamed:@"timeline_image_placeholder"]];
    
    // 根据图片类型判断是否显示GIF标记（注意cell会重复利用）
    self.gifView.hidden = ![photo.thumbnail_pic.lowercaseString hasSuffix:@"gif"];
    
//    DJLog(@"%@",photo.thumbnail_pic);
    
    
}


// 调整gifView的位置(由于使用的是initWithImage创建，所以gifView有宽和高，因此只需要设置x,y值即可)
- (void)layoutSubviews {

    [super layoutSubviews];
    self.gifView.x = self.width - self.gifView.width;
    self.gifView.y = self.height - self.gifView.height;
    
}




@end