외부 이미지 다운로드 후 png 파일 저장 하는 방법

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1. IEnumerator fImageDownCheck() {  
2.   
3. WWW www = new WWW(_url);  
4. yield return www;  
5.   
6. if(www.size == 0) {  
7. mImage = true;  
8. StopCoroutine("fImageDownCheck");  
9. }  else {  
10. noticeManager.fNoticeTextureMake(www.texture);  
11. Debug.Log("Image Save");  
12. //  Texture2D savedTexture = _materialToSave.mainTexture as Texture2D;  
13.        Texture2D newTexture = new Texture2D(www.texture.width, www.texture.height, TextureFormat.ARGB32, false);  
14.    
15.              newTexture.SetPixels(0,0, www.texture.width, www.texture.height, www.texture.GetPixels());  
16.        newTexture.Apply();  
17.              byte[] bytes = newTexture.EncodeToPNG();  
18. Debug.Log(bytes);  
19.             File.WriteAllBytes(Application.temporaryCachePath+"/"+"test.png", bytes);  
20. }  
21. }  

IEnumerator fImageDownCheck() {

WWW www = new WWW(_url);
yield return www;

if(www.size == 0) {
mImage = true;
StopCoroutine("fImageDownCheck");
}  else {
noticeManager.fNoticeTextureMake(www.texture);
Debug.Log("Image Save");
//	Texture2D savedTexture = _materialToSave.mainTexture as Texture2D;
       Texture2D newTexture = new Texture2D(www.texture.width, www.texture.height, TextureFormat.ARGB32, false);
 
             newTexture.SetPixels(0,0, www.texture.width, www.texture.height, www.texture.GetPixels());
       newTexture.Apply();
             byte[] bytes = newTexture.EncodeToPNG();
Debug.Log(bytes);
            File.WriteAllBytes(Application.temporaryCachePath+"/"+"test.png", bytes);
}
}

Application.temporaryCachePath 폴더 : /var/folders/dy/********************/T/DefaultCompany/ProjectName 에 저장 됩니다.

출처 : http://gods2000.tistory.com/67