// ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
// ViewController.m
#import "ViewController.h"
#import "UIImageView+WebCache.h"
#import "SDWebImageManager.h"
#import "SDWebImageDownloader.h"
#import "UIImage+GIF.h"
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@end
@implementation ViewController
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self gif];
}
// 下载图片&设置显示图片&内存缓存&磁盘缓存
// !!!完成后回调是在主线程中处理的
-(void)download1
{
/*
第一个参数:要下载图片的URL
第二个参数:占位图片
第三个参数:下载选项
第四个参数:progress 进度回调
receivedSize:已经下载的数据大小
expectedSize:图片的中大小
第五个参数:completed 完成回调(成功|失败)
cacheType:是否使用了缓存,使用的方式
*/
[self.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://ww1.sinaimg.cn/crop.0.0.720.720.1024/abe7c97cjw8ermn0v2x7nj20k00k0jrz.jpg"] placeholderImage:[UIImage imageNamed:@"Snip20200808_11"] options:SDWebImageLowPriority | SDWebImageCacheMemoryOnly progress:^(NSInteger receivedSize, NSInteger expectedSize) {
NSLog(@"%f",(CGFloat)receivedSize/expectedSize);
} completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
NSLog(@"%@--%@",error,[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]);
switch (cacheType) {
case SDImageCacheTypeNone:
NSLog(@"直接下载----");
break;
case SDImageCacheTypeDisk:
NSLog(@"磁盘缓存----");
break;
case SDImageCacheTypeMemory:
NSLog(@"内存缓存----");
break;
default:
break;
}
}];
}
// 下载图片&内存缓存&磁盘缓存
// !!!完成后回调是在主线程中处理的
-(void)download2
{
[[SDWebImageManager sharedManager]downloadImageWithURL:[NSURL URLWithString:@"http://img.kumi.cn/photo/6b/42/eb/6b42eb5597c4f174.jpg"] options:kNilOptions progress:^(NSInteger receivedSize, NSInteger expectedSize) {
NSLog(@"%f",(CGFloat)receivedSize/expectedSize);
} completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
if (error == nil) {
self.imageView.image = image;
}
}];
}
// 下载图片&不做任何的缓存处理
// !!!完成后回调是在子线程中处理的
-(void)download3
{
[[SDWebImageDownloader sharedDownloader] downloadImageWithURL:[NSURL URLWithString:@"http://img.kumi.cn/photo/6b/42/eb/6b42eb5597c4f174.jpg"] options:kNilOptions progress:^(NSInteger receivedSize, NSInteger expectedSize) {
} completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
// completed是在子线程中处理的
dispatch_async(dispatch_get_main_queue(), ^{
//设置图片
self.imageView.image = image;
});
}];
}
- (void)gif
{
/*
// 下载动图,gif格式的
[[SDWebImageDownloader sharedDownloader] downloadImageWithURL:[NSURL URLWithString:@"http://n.sinaimg.cn/default/20150923/v4dN-fxhzevf0962986.gif"] options:kNilOptions progress:^(NSInteger receivedSize, NSInteger expectedSize) {
} completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
//completed是在子线程中处理的
dispatch_async(dispatch_get_main_queue(), ^{
//设置图片
self.imageView.image = image;
});
}];
*/
/* 该方法不能显示图片的动态过程
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http:n.sinaimg.cn/default/20150923/v4dN-fxhzevf0962986.gif"]];
self.imageView.image = [UIImage imageWithData:data];
*/
// 可以加载本地动态的gif图片
self.imageView.image = [UIImage sd_animatedGIFNamed:@"1234"];
}
@end
