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一：插件使用

——下载插件并导入Unity：

——如果是Android设备的话需要设置写权限到外部卡：PlayerSettings—Player—OtherSettings—Write Permission选择External(SDCard)

——代码实现点击按钮拉取手机相册

using UnityEngine;using UnityEngine.UI;public class Test : MonoBehaviour{    public RawImage headIcon;//头像    public Button selectHeadIcon_btn;//选择头像按钮    private void Awake()    {        selectHeadIcon_btn.GetComponent().onClick.AddListener(() => SelectHeadIconFromAlbum());    }    /// 
    /// 从手机相册选择头像    /// 
    ///     public void SelectHeadIconFromAlbum(int maxSize = -1)    {        //调用插件自带接口，拉取相册，内部有区分平台        NativeGallery.Permission permission = NativeGallery.GetImageFromGallery((path) =>        {            Debug.Log("Image path: " + path);            if (path != null)            {                // 此Action为选取图片后的回调，返回一个Texture2D                 Texture2D texture = NativeGallery.LoadImageAtPath(path, maxSize);                if (texture == null)                {                    Debug.Log("Couldn't load texture from " + path);                    return;                }                Debug.Log(texture.name);                SetHeadIcon(texture);            }        }        );    }    /// 
    /// 设置头像    /// 
    private void SetHeadIcon(Texture2D texture)    {        headIcon.texture = texture;    }}

二：其他工具

——Sprite转字节数组

/// 
/// Sprite转bytes/// 
public static byte[] Sprite2Bytes(Sprite sprite){    Texture2D tex = sprite.texture;    return tex.EncodeToPNG();}

/// 
/// bytes转Sprite/// 
public static Sprite Bytes2Sprite(byte[] bytes){    Texture2D tex = new Texture2D(111, 111);    tex.LoadImage(bytes);    tex.Apply();    Sprite sp = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), Vector2.zero);    return sp;}

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