Unity 保存图片到手机相册（安卓、苹果）

待我称王封你为后i 2022-06-10 07:55 998阅读 0赞

首先说一下安卓：首先在相册里创建一个文件，然后将图片存入。

代码：

using UnityEngine;
    using System.Collections;
    using System.IO;
    
    public class SavaPicture : MonoBehaviour {
    
    	// Use this for initialization
    	void Start () {
            //保存图片
            StartCoroutine(LoadImg());
        }
        IEnumerator LoadImg()
        {
            WWW www = new WWW("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1498635837686&di=cc15b088c3c1376d724891abd74736b1&imgtype=0&src=http%3A%2F%2Fk2.jsqq.net%2Fuploads%2Fallimg%2F1705%2F7_170524143440_5.jpg");
            yield return www;
    
            
            Texture2D texture2D = www.texture;
            byte[] bytes = texture2D.EncodeToPNG();
            string fileName = "二维码.png";
            string path;
           
            //安卓平台
            else if (Application.platform == RuntimePlatform.Android)
            {
                string destination = "/sdcard/DCIM/棋牌";
                //判断目录是否存在，不存在则会创建目录  
                if (!Directory.Exists(destination))
                {
                    Directory.CreateDirectory(destination);
                }
                path = destination + "/" + fileName;
                //存图片  
                System.IO.File.WriteAllBytes(path, bytes);
            }
            //电脑端
            else
            {
                path = Application.dataPath + "/" + fileName;
                FileStream fs = new FileStream(path, FileMode.Create);
                fs.Write(bytes, 0, bytes.Length);
                fs.Flush();
                fs.Close();
            }
            Debug.Log(path);
        }
    }

需要注意的是：打包的时候 配置一下：player Settings---->other Settings------>write Access------>External(SDCard)

下面说一下苹果：

PhotoManager.h 文件内容

#import <Foundation/Foundation.h>
    
    @interface PhotoManager : NSObject
    - ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error
       contextInfo: ( void *) contextInfo;
    @end

PhotoManager.mm  文件 内容如下

#import "PhotoManager.h"
    @implementation PhotoManager
    - ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error
              contextInfo: ( void *) contextInfo
    {
        NSLog(@"保存结束");
        if (error != nil) {
            NSLog(@"有错误");
        }
    }
    @end
    
    extern "C" {
    void _SavePhoto(char *readAddr)
    {
        NSString *strReadAddr = [NSString stringWithUTF8String:readAddr];
        UIImage *img = [UIImage imageWithContentsOfFile:strReadAddr];
        PhotoManager *instance = [PhotoManager alloc];
        UIImageWriteToSavedPhotosAlbum(img, instance,
                                       @selector(imageSaved:didFinishSavingWithError:contextInfo:), nil);
    }
    }

需要注意：苹果打包的时候 我们需要打开info.plist文件添加相应权限的说明，否则程序在iOS10上会出现崩溃。或则打包出现错误。

添加相册权限：

相册权限： Privacy - Photo Library Usage Description 是否允许此App访问你的媒体资料库？

Unity 项目DEMO [点击打开链接][Link 1]

[Link 1]: http://download.csdn.net/download/m0_37583098/9932321