一、使用File读取
void LocalBtyeToImage(Image image, string url) {
if (!File.Exists(url))
return;
byte[] readBtye = File.ReadAllBytes(url);
int width = Screen.width;
int height = Screen.height;
Texture2D texture = new Texture2D(width, height);
texture.LoadImage(readBtye);
Sprite sprite = Sprite.Create(texture,
new Rect(0, 0, width, height),
new Vector2(0.5f, 0.5f));
image.sprite = sprite;
}
二、使用UnityWebRequest获取
IEnumerator FetchLocalPicture(Image image, string url) {
if (!File.Exists(url))
yield break;
var uri = new System.Uri(Path.Combine(url));
using (UnityWebRequest uwr = UnityWebRequest.Get(uri)) {
DownloadHandlerTexture downloadHandlerTexture = new DownloadHandlerTexture(true);
uwr.downloadHandler = downloadHandlerTexture;
yield return uwr.SendWebRequest();
if (uwr.result == UnityWebRequest.Result.Success)
{
int width = Screen.width;
int height = Screen.height;
Texture2D texture = new Texture2D(width, height);
texture = downloadHandlerTexture.texture;
Sprite sprite = Sprite.Create(texture,
new Rect(0, 0, width, height),
new Vector2(0.5f, 0.5f));
image.sprite = sprite;
Resources.UnloadUnusedAssets();
}
}
}
