（轉）Unity3D保存圖片到本地（IOS Andriod）Unity Native Gallery Plugin插件

 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class NewBehaviourScript : MonoBehaviour {

    [SerializeField]Button button1;
    [SerializeField] Button button2;
    [SerializeField] Button button3;
    [SerializeField] Text text;
    // Use this for initialization
    void Start () {
        button1.onClick.AddListener(Button1Click);
        button2.onClick.AddListener(Button2Click);
        button3.onClick.AddListener(Button3Click);
    }
    void Button1Click()
    {
        // Take a screenshot and save it to Gallery/Photos
        StartCoroutine(TakeScreenshotAndSave());
    }

    void Button2Click()
    {
        // Don't attempt to pick media from Gallery/Photos if
        // another media pick operation is already in progress
        if (NativeGallery.IsMediaPickerBusy())
            return;

        // Pick a PNG image from Gallery/Photos
        // If the selected image's width and/or height is greater than 512px, down-scale the image
        PickImage(512);
    }

    void Button3Click()
    {
        // Don't attempt to pick media from Gallery/Photos if
        // another media pick operation is already in progress
        if (NativeGallery.IsMediaPickerBusy())
            return;

        // Pick a video from Gallery/Photos
        PickVideo();
    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            if (Input.mousePosition.x < Screen.width / 3)
            {
                // Take a screenshot and save it to Gallery/Photos
                StartCoroutine(TakeScreenshotAndSave());
            }
            else
            {
                // Don't attempt to pick media from Gallery/Photos if
                // another media pick operation is already in progress
                if (NativeGallery.IsMediaPickerBusy())
                    return;

                if (Input.mousePosition.x < Screen.width * 2 / 3)
                {
                    // Pick a PNG image from Gallery/Photos
                    // If the selected image's width and/or height is greater than 512px, down-scale the image
                    PickImage(512);
                }
                else
                {
                    // Pick a video from Gallery/Photos
                    PickVideo();
                }
            }
        }
    }

    private IEnumerator TakeScreenshotAndSave()
    {
        yield return new WaitForEndOfFrame();

        Texture2D ss = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);
        ss.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
        ss.Apply();

        // Save the screenshot to Gallery/Photos
        Debug.Log("Permission result: " + NativeGallery.SaveImageToGallery(ss, "GalleryTest", "My img {0}.png"));
        text.text = "Permission result: " + NativeGallery.SaveImageToGallery(ss, "GalleryTest", "My img {0}.png");
        // To avoid memory leaks
        Destroy(ss);
    }

    private void PickImage(int maxSize)
    {
        NativeGallery.Permission permission = NativeGallery.GetImageFromGallery((path) =>
        {
            Debug.Log("Image path: " + path);
         
            if (path != null)
            {
                // Create Texture from selected image
                Texture2D texture = NativeGallery.LoadImageAtPath(path, maxSize);
                if (texture == null)
                {
                    Debug.Log("Couldn't load texture from " + path);
                    text.text = "Couldn't load texture from " + path;
                    return;
                }

                // Assign texture to a temporary quad and destroy it after 5 seconds
                GameObject quad = GameObject.CreatePrimitive(PrimitiveType.Quad);
                quad.transform.position = Camera.main.transform.position + Camera.main.transform.forward * 2.5f;
                quad.transform.forward = Camera.main.transform.forward;
                quad.transform.localScale = new Vector3(1f, texture.height / (float)texture.width, 1f);

                Material material = quad.GetComponent<Renderer>().material;
                if (!material.shader.isSupported) // happens when Standard shader is not included in the build
                    material.shader = Shader.Find("Legacy Shaders/Diffuse");

                material.mainTexture = texture;

                Destroy(quad, 5f);

                // If a procedural texture is not destroyed manually, 
                // it will only be freed after a scene change
                Destroy(texture, 5f);
            }
        }, "Select a PNG image", "image/png", maxSize);

        Debug.Log("Permission result: " + permission);
        text.text = "Permission result: " + permission;
    }

    private void PickVideo()
    {
        NativeGallery.Permission permission = NativeGallery.GetVideoFromGallery((path) =>
        {
            Debug.Log("Video path: " + path);
            if (path != null)
            {
                // Play the selected video
                Handheld.PlayFullScreenMovie("file://" + path);
            }
        }, "Select a video");

        Debug.Log("Permission result: " + permission);
    }

}