ios本地缓存及图片缓存清理

/** 清除所有的存储本地的数据 */

- (void)clearAllUserDefaultsData

{

    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

    

    NSDictionary *dic = [userDefaults dictionaryRepresentation];

    for (id  key in dic) {

        [userDefaults removeObjectForKey:key];

    }

    [userDefaults synchronize];

}

/** 获取sdWeb缓存 */

-(NSString *)getAllSDWebImageCacheDatas

{

    unsigned long long size = [SDImageCache sharedImageCache].getSize;

    //设置文件大小格式

    NSString *sizeText = nil;

    if (size >= pow(10, 9)) {

        sizeText = [NSString stringWithFormat:@"%.2fGB", size / pow(10, 9)];

    }else if (size >= pow(10, 6)) {

        sizeText = [NSString stringWithFormat:@"%.2fMB", size / pow(10, 6)];

    }else if (size >= pow(10, 3)) {

        sizeText = [NSString stringWithFormat:@"%.2fKB", size / pow(10, 3)];

    }else {

        sizeText = [NSString stringWithFormat:@"%zdB", size];

    }

    return sizeText;

}

//使用SDWeb清除图片缓存

   [[SDImageCache sharedImageCache]cleanDisk];

   [[SDImageCache sharedImageCache] clearDisk];

   [[SDImageCache sharedImageCache] clearMemory];