iOS开发常用的第三方类库

时间：10-08 来源：互联网点击：

thURL:(NSURL *)url placeholderImage:(UIImage *)placeholder usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

- (void)setImageWithURL:(NSURL *)url completed:(SDWebImageCompletedBlock)completedBlock usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletedBlock)completedBlock usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletedBlock)completedBlock usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options progress:(SDWebImageDownloaderProgressBlock)progressBlock completed:(SDWebImageCompletedBlock)completedBlock usingActivityIndicatorStyle:(UIActivityIndicatorViewStyle)activityStyle;

UIImage+Resize 调整图片大小

GitHub：https://github.com/coryalder/UIImage_Resize

提供多种方法为图片设置透明度、圆角、裁剪、调整大小等：

- (UIImage *)imageWithAlpha;
- (UIImage  *)transparentBorderImage:(NSUInteger)borderSize;
- (UIImage  *)roundedCornerImage:(NSInteger)cornerSize  borderSize:(NSInteger)borderSize;
- (UIImage  *)croppedImage:(CGRect)bounds;
- (UIImage  *)thumbnailImage:(NSInteger)thumbnailSize
          transparentBorder:(NSUInteger)borderSize
               cornerRadius:(NSUInteger)cornerRadius
       interpolationQuality:(CGInterpolationQuality)quality;
- (UIImage  *)resizedImage:(CGSize)newSize
     interpolationQuality:(CGInterpolationQuality)quality;
- (UIImage *)
  resizedImageWithContentMode:(UIViewContentMode)contentMode
                       bounds:(CGSize)bounds
         interpolationQuality:(CGInterpolationQuality)quality;

更详细使用见：http://vocaro.com/trevor/blog/2009/10/12/resize-a-uiimage-the-right-way/

ImageCacheResize 异步加载图片、缓存及调整大小

GitHub：https://github.com/toptierlabs/ImageCacheResize

整合了SDWebImage和UIImage+Resize的功能，用于图片的异步加载、缓存、以及下载完成后调整大小并显示在UIImageView上。

提供了以下API用于加载图片以及加载完成后调整图片大小：

- (void)setImageWithURL:(NSURL *)url  andCropToBounds:(CGRect)bounds;
- (void)setImageWithURL:(NSURL *)url  andResize:(CGSize)size withContentMode:(UIViewContentMode)mode;
- (void)setImageWithURL:(NSURL *)url  placeholderImage:(UIImage *)placeholder  andCropToBounds:(CGRect)bounds;
- (void)setImageWithURL:(NSURL *)url  placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options   andResize:(CGSize)size;
- (void)setImageWithURL:(NSURL *)url  placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options   andResize:(CGSize)size withContentMode:(UIViewContentMode)mode;
- (void)setImageWithURL:(NSURL *)url  placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options   andCropToBounds:(CGRect)bounds;

使用方法和SDWebImage一样简单，如以下官方例子：

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[imageview setImageWithURL:[NSURL  URLWithString:@http://t0.gstatic.com/images?q=tbn:ANd9GcQfraHpiabjEY8iDdBe9OUQYHMtwfuAv9ZRR0RYKuoVF_EpE8Fp5A] andResize:CGSizeMake(30, 30)  withContentMode:UIViewContentModeScaleAspectFit]; // 按比例缩放
[imageview setImageWithURL:[NSURL  URLWithString:@http://t0.gstatic.com/ima

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