public void UpdateAll()
{
List <string> newNames = new List <string>();
string fullPath = Path.Combine(Application.streamingAssetsPath, "Resources", ResourcePath);
// 生成 newNames:List 当前文件夹下所有 FileSuffix 后缀的文件名
if (Directory.Exists(fullPath))
{
DirectoryInfo direction = new DirectoryInfo(fullPath);
FileInfo[] files = direction.GetFiles("*", SearchOption.AllDirectories);
foreach (FileInfo file in files)
{
if (ResAPI.HasSuffix(file.Name, false))
{
newNames.Add(ResAPI.RemoveSuffix(file.Name));
}
}
}
// 删除：原List有 新List没有，需要删除
IEnumerable <string> deleteList = imageNames.Except(newNames);
// 添加：新List有 原List没有，需要添加
IEnumerable <string> newList = newNames.Except(imageNames);
// imageNames 列表更新，需及时更新，否则重复点击刷新可能会造成重复添加
imageNames = newNames;
// 添加的处理
foreach (string name in newList)
{
StartCoroutine(AddNewImage(name));
}
// 删除的处理
foreach (string name in deleteList)
{
Destroy(images[name].gameObject);
images.Remove(name);
}
}
/// <summary>
/// 用 IO 方式从外部加载图片到 Sprite
/// </summary>
/// <param name="path">
/// 可以是 Resources/ 下的路径也可以是绝对路径，不加后缀
/// </param>
public static Sprite LoadSprite(string path)
{
// 路径格式处理
if (!path.Contains(ResourcePath))
{
path = Path.Combine(ResourcePath, path);
}
if (!ResAPI.HasSuffix(path, false))
{
path = ResAPI.FillSuffix(path);
}
Texture2D texture = LoadTexture(path);
if (texture == null)
{
return(null);
}
// 创建 Sprite
Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
return(sprite);
}
