Unity Serialize and Encoding sprite - unity3d

Question

I'm trying to download and save file, on android device. It's works fine on PC, but i have a visual bug at my android phone. Look at screen please
My code:
It's how i download and serialize it
Icon = Sprite.Create(texture2dd, new Rect(0.0f, 0.0f, texture2dd.width, texture2dd.height), new Vector2(0.5f, 0.5f), 100.0f);
byte[] texturebytes = Icon.texture.GetRawTextureData();
File.WriteAllText(Application.persistentDataPath + "/icon", Encoding.Default.GetString(texturebytes));
File.WriteAllText(Application.persistentDataPath + "/iconinfo", Icon.texture.width + "###" + Icon.texture.height);
And thi is how I try to load it later:
string[] info = File.ReadAllText(path + "info").Split(new string[] { "###" }, StringSplitOptions.None);
int width, height;
int.TryParse(info[0], out width);
int.TryParse(info[1], out height);
byte[] bytesIcon = Encoding.Default.GetBytes(File.ReadAllText(path));
Texture2D iconText = new Texture2D(width, height, TextureFormat.ARGB32, false);
iconText.LoadRawTextureData(bytesIcon);
iconText.Apply();
return Sprite.Create(iconText, new Rect(0, 0, width, height), new Vector2(0.5f, 0.5f));
I think problem in Encoding type, but i tryed all Encoding types, and it's still don't work, and load some bug-texture.

Answer 1

Instead of using GetRawTextureData() and LoadRawTextureData you should save it actually as a .png or .jpg format! The "RawTextureData" is very huge compared to the pure .jpg or .png file data.
Instead use EncodeToPNG (or EncodeToJPG if the quality is not that important - than remember to also adopt the file ending) and LoadImage.
Additionally LoadImage actually "knows" the image size (because it is encoded into the png or jpg file) so there is no need for your iconinfo file at all!
Something like
// ...
Icon = Sprite.Create(texture2dd, new Rect(0.0f, 0.0f, texture2dd.width, texture2dd.height), Vector2.one * 0.5f, 100.0f);
byte[] texturebytes = Icon.texture.EncodeToPNG();
File.WriteAllText(Application.persistentDataPath + "/icon.png", Encoding.Default.GetString(texturebytes));
// ...
(Maybe also checkout this answer for other ways to write the file.)
and
// ...
byte[] bytesIcon = Encoding.Default.GetBytes(File.ReadAllText(path));
// as the example in the documentation states:
// Texture size does not matter, since
// LoadImage will replace it with incoming image size.
Texture2D iconText = new Texture2D(2, 2);
iconText.LoadImage(bytesIcon);
// Also from the documentation:
// Texture will be uploaded to the GPU automatically; there's no need to call Apply.
return Sprite.Create(iconText, new Rect(0, 0, iconText.width, iconText.height), Vector2.one * 0.5f);
And yes another issue might still be that you used Encoding.Default (see here) so maybe you should also use a fixed encoding like Encoding.UTF8.
Though for loading the file I would actually prefere to use a UnityWebRequest which can be also used for a file from the local filestorage!