Http下载Demo

最新推荐文章于 2019-12-03 12:23:19 发布

little_two_two

最新推荐文章于 2019-12-03 12:23:19 发布

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分类专栏：网络(Http/Socket/libcurl) 文章标签： http

本文链接：https://blog.youkuaiyun.com/yuxikuo_1/article/details/51089348

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本文提供了一个使用Unity进行图片加载的示例代码，包括从网络和本地加载图片到Unity中的Texture2D对象，并展示了如何使用GUI显示这些图片。此外，还介绍了如何将加载的图片保存到本地。

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public class ImageTest : MonoBehaviour 
{
	string url = "http://www.yxk.com:8000/test.png";

	private Texture2D img = null;

	private Texture2D img2 = null;

	private bool downloadOK = false;

	enum GetPicType 
	{
		DownLoad = 0,
		LoaclLoad
	}

	void OnGUI()
	{
		if( this.img != null )
		{
			GUI.DrawTexture(new Rect(0,0,200,300),this.img );
		}
		if( this.img2 != null )
		{
			GUI.DrawTexture(new Rect(320,0,200,300),this.img2 );
		}
		if( GUI.Button (new Rect (210, 50, 100, 30), "网络加载") ) 
		{
			StartCoroutine( this.DownLoadTexture( this.url, GetPicType.DownLoad ));
		}
		if( GUI.Button (new Rect (210, 150, 100, 30), "本地加载") ) 
		{
			if( this.downloadOK )
			{
				StartCoroutine( this.DownLoadTexture( "file://" + Application.streamingAssetsPath + "/test.png", GetPicType.LoaclLoad ));
			}
			else
			{

			}
		}
	}

	IEnumerator DownLoadTexture( string url, GetPicType getType )
	{
		WWW www = new WWW (url);
		yield return www;
		Texture2D tempImage = null;
		if( www.isDone && www.error == null ) 
		{
			switch( getType )
			{
				case GetPicType.DownLoad:
				{
					this.img = www.texture;
					tempImage = this.img;
					break;
				}
				case GetPicType.LoaclLoad:
				{
					this.img2 = www.texture;
					tempImage = this.img2;
					break;
				}
				default:
				{

					break;
				}
			}
		}
		if( tempImage != null ) 
		{
			byte[] data = tempImage.EncodeToPNG();
			System.IO.File.WriteAllBytes( Application.streamingAssetsPath + "/test.png", data );
			this.downloadOK = true;
		}
	}
}