獲取緩存

- (CGFloat)getCachSize {
    
    NSUInteger imageCacheSize = [[SDImageCache sharedImageCache] getSize];
    //獲取自定義緩存大小
    //用枚舉器遍歷 一個(gè)文件夾的內(nèi)容
    //1.獲取 文件夾枚舉器
    NSString *myCachePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Caches"];
    NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:myCachePath];
    __block NSUInteger count = 0;
    //2.遍歷
    for (NSString *fileName in enumerator) {
        NSString *path = [myCachePath stringByAppendingPathComponent:fileName];
        NSDictionary *fileDict = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
        count += fileDict.fileSize;//自定義所有緩存大小
    }
    // 得到是字節(jié)  轉(zhuǎn)化為M
    CGFloat totalSize = ((CGFloat)imageCacheSize+count)/1024/1024;
    return totalSize;
}

刪除緩存

- (void)handleClearView {
    //刪除兩部分
    //1.刪除 sd 圖片緩存
    //先清除內(nèi)存中的圖片緩存
    [[SDImageCache sharedImageCache] clearMemory];
    //清除磁盤(pán)的緩存
    [[SDImageCache sharedImageCache] clearDiskOnCompletion:nil];
    //2.刪除自己緩存
    NSString *myCachePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Caches"];
    [[NSFileManager defaultManager] removeItemAtPath:myCachePath error:nil];
}