Unity读取Android SDcard文件 _Android

笛里谁知壮士心，沙头空照征人骨。这篇文章主要讲述Unity读取Android SDcard文件相关的知识，希望能为你提供帮助。
一、添加权限权限添加：Player settings -- Other settings -- write permission的设置 Sdcard。这个是在Unity编辑器里打包的情况。
如果导出到studio 里面的话，可自行修改Manifest文件。

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二、两种方式 IO方式加载sdcard上的图片资源
加载的 /storage/emulated/0/ProjectName/image.jpg,

image = this.GetComponentInChildren< Image> (); Debug.Log("IO加载用时: image = this.GetComponent< Image> ==========" + image); Debug.Log("IO加载:Application.dataPath "+ Application.dataPath ); // Application.dataPath /data/app/com.putao.ptx.core-1/base.apkDebug.Log("IO加载:Application.persistentDataPath " + Application.persistentDataPath); // Application.persistentDataPath /storage/emulated/0/android/data/com.putao.ptx.core/filesDebug.Log("IO加载:GameObject.Find" + GameObject.Find("Canvas/Avator").GetComponent< Image> ()); // /data/user/0/com.putao.paichallenge/cache/20170524_130527.jpg// path ======="/storage/emulated/0/ProjectName/image.jpg" FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read); fileStream.Seek(0, SeekOrigin.Begin); //创建文件长度缓冲区 byte[] bytes = new byte[fileStream.Length]; //读取文件 fileStream.Read(bytes, 0, (int)fileStream.Length); //释放文件读取流 fileStream.Close(); fileStream.Dispose(); fileStream = null; //创建Texture int width = 300; int height = 372; Texture2D texture = new Texture2D(width, height); texture.LoadImage(bytes); //创建Sprite Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width,texture.height), new Vector2(0.5f, 0.5f)); image.sprite = sprite;

log上可以看出来 android上 getExternalFilesDir("") 和 Unity里面的Application.persistentDataPath是一致的
/storage/emulated/0/Android/data/com.putao.ptx.core/files WWW方式加载本地图片
url= "file://"+ "/storage/emulated/0/ProjectName/image.jpg"
根本不是加"jar:file://..."

public void LoadByWWW(String path) { StartCoroutine(doLoadByWWW(path)); }IEnumerator doLoadByWWW(String path) { string url = "file://" + "/storage/emulated/0/PaiChallenge/image.jpg"; Debug.Log("doLoadByWWW == url ==================" + url); WWW w = new WWW(url); yield return w; if (w.isDone) { Sprite sprite = Sprite.Create(w.texture, new Rect(0, 0, w.texture.width, w.texture.height), new Vector2(0.5f, 0.5f)); GameObject.Find("Canvas/Avator").GetComponent< Image> ().sprite = sprite; }

【Unity读取Android SDcard文件】