新浪微博客户端(32)-设置相册图片的contentMode

 

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



- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        
        
//        typedef NS_ENUM(NSInteger, UIViewContentMode) {
//            UIViewContentModeScaleToFill,             // 默认值,拉伸并填充到整个ImageView,可能变形
//            UIViewContentModeScaleAspectFit,          // 拉伸至完全显示在imageView里面,不会变形
//            UIViewContentModeScaleAspectFill,         // 【推荐使用!!!】拉伸至图片的宽度等于imageView的宽度或高度为止
//            UIViewContentModeRedraw,                  // 不常用,当调用setNeedsDisplay的时候,会重绘图片
//            UIViewContentModeCenter,                  // 居中显示,不会拉伸
//            UIViewContentModeTop,
//            UIViewContentModeBottom,
//            UIViewContentModeLeft,
//            UIViewContentModeRight,
//            UIViewContentModeTopLeft,
//            UIViewContentModeTopRight,
//            UIViewContentModeBottomLeft,
//            UIViewContentModeBottomRight,
//        };
//        
//        
//        // self.clipsToBounds 超出边框的部分会剪掉,通常与AspectFill配合使用
//        
//        // 规律:
//        // 1. 凡是带有scale单词的,图片都会拉伸
//        // 2. 凡是带有Aspect单词的,图片都会保持原来的宽高比,图片不会变形

        
        self.contentMode = UIViewContentModeScaleAspectFill;
        self.clipsToBounds = YES;
    }
    return self;
}




- (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;

    // 取得缩略图对应的中型图片
    NSString *photo_image_url = photo.thumbnail_pic;
    photo_image_url = [photo_image_url stringByReplacingOccurrencesOfString:@"thumbnail" withString:@"bmiddle"];

    // 设置显示图片
    [self sd_setImageWithURL:[NSURL URLWithString:photo_image_url] 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

 

最终效果:

 

posted @ 2016-11-23 19:37  夜行过客  阅读(374)  评论(0编辑  收藏  举报