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Unity保存图片到相册

發(fā)布時(shí)間：2024/1/18 编程问答 25 豆豆

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Unity保存圖片到Android相冊(cè)

Java]?純文本查看?復(fù)制代碼

package com.xuefei.game;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import com.unity3d.player.UnityPlayerNativeActivity;

import android.content.Context;

import android.content.Intent;

import android.graphics.Bitmap;

import android.graphics.Bitmap.CompressFormat;

import android.graphics.BitmapFactory;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.Log;

import android.widget.Toast;

public class MainActivity extends UnityPlayerNativeActivity {

????public static Context context;

????public static MainActivity mainActivity;

????@Override

????protected void onCreate(Bundle savedInstanceState) {

????????super.onCreate(savedInstanceState);

????????mainActivity = this;

????}

????// 保存到相冊(cè)

????public static void savePng(final String fileName) {

????????context = mainActivity.getApplicationContext();

????????mainActivity.runOnUiThread(new Runnable() {

????????????public void run() {

????????????????Bitmap bitmap = BitmapFactory.decodeFile(Environment

????????????????????????.getExternalStorageDirectory()

????????????????????????+ "/Android/data/com.xuefei.game/files/"

????????????????????????+ fileName

????????????????????????+ ".png");

????????????????File file = new File(Environment.getExternalStorageDirectory()

????????????????????????+ "/DCIM/Camera", fileName + ".jpg");

????????????????FileOutputStream fos = null;

????????????????try {

????????????????????fos = new FileOutputStream(file);

????????????????} catch (FileNotFoundException e) {

????????????????????// TODO Auto-generated catch block

????????????????????Log.w("cat", e.toString());

????????????????}

????????????????bitmap.compress(CompressFormat.JPEG, 100, fos);

????????????????try {

????????????????????fos.flush();

????????????????} catch (IOException e) {

????????????????????// TODO Auto-generated catch block

????????????????????Log.w("cat", e.toString());

????????????????}

????????????????try {

????????????????????fos.close();

????????????????} catch (IOException e) {

????????????????????// TODO Auto-generated catch block

????????????????????Log.w("cat", e.toString());

????????????????}

????????????????bitmap.recycle();//掃描保存的圖片

????????????????context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" +Environment.getExternalStorageDirectory()

????????????????????????+ "/DCIM/Camera/"+fileName + ".jpg")));

?????????????????

????????????????Toast.makeText(context, "照片已保存到相冊(cè)", Toast.LENGTH_SHORT).show();

????????????}

????????});

????}

}

Unity中代碼：

[C#]?純文本查看?復(fù)制代碼

if (GUI.Button(new Rect(0, 720, 400, 120), "SavePng"))

????????{

????????????StartCoroutine(SavePngToSD(DateTime.Now.ToFileTime().ToString()));

????????}

/// <summary>

????/// 截圖后先檢測(cè)圖片是否保存成功然后調(diào)用保存到相冊(cè)

????/// </summary>

????/// <param name="name"></param>

????public void SavePng(string name)

????{

#if UNITY_ANDROID

????????AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");

????????AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");

????????jo.CallStatic("SavePng", name);

#elif? UNITY_IPHONE

#endif

????}

/// <summary>

????/// 保存截圖到相冊(cè)

????/// </summary>

????/// <param name="pngName"></param>

????/// <returns></returns>

????IEnumerator SavePngToSD(string pngName)

????{

????????yield return new WaitForEndOfFrame();

????????Application.CaptureScreenshot(pngName + ".png");

????????while (!IsFileExistByPath(Application.persistentDataPath + "/" + pngName + ".png"))

????????{

????????????yield return new WaitForSeconds(0.05f);

????????}

????????SavePng(pngName);

????????yield return new WaitForSeconds(0.3f);

????????//測(cè)試請(qǐng)求文件

????????WWW www = new WWW("file:///" + Application.persistentDataPath + "/" + pngName + ".png");

????????yield return www;

????}

????/// <summary>

????/// 檢測(cè)文件是否存在

????/// </summary>

????/// <param name="path"></param>

????/// <returns></returns>

????public static bool IsFileExistByPath(string path)

????{

????????FileInfo info = new FileInfo(path);

????????bool b = false;

????????if (info == null || info.Exists == false)

????????{

????????????b = false;

????????}

????????else

????????{

????????????b = true;

????????}

????????return b;

????}

注意文件路徑是否存在，不存在就創(chuàng)建

流程：Unity截屏--調(diào)用安卓拷貝到相冊(cè)--掃描保存的文件

解決的問題：截屏圖片在相冊(cè)不顯示。

Unity截屏插入iOS相冊(cè)?

[C#]?純文本查看?復(fù)制代碼

using System;

using System.IO;

#if UNITY_IOS

using System.Runtime.InteropServices;

#endif

using UnityEngine;

public class UnityPlugins : MonoBehaviour

{

????// Use this for initialization

????void Start()

????{

????}

????// Update is called once per frame

????void Update()

????{

????}

????#if UNITY_IOS

????[DllImport("__Internal")]

????private static extern void _SavePhoto(string readAddr);

????#endif

????string path = "";

????private void OnGUI()

????{

????????if (GUILayout.Button("TakePhoto", GUILayout.Height(300), GUILayout.Width(300)))

????????{

????????????CaptureCamera();

????????????Debug.Log("TakePhoto");

????????}?

????}

????void CaptureCamera()

????{

????????Camera camera = Camera.main;

????????string name = DateTime.Now.ToFileTime().ToString();

????????Rect rect = new Rect(0, 0, Screen.width, Screen.height);

????????RenderTexture rt = new RenderTexture(Screen.width, Screen.height, 0);

????????Texture2D frame = new Texture2D(Screen.width, Screen.height, TextureFormat.RGBA32, false);

????????camera.targetTexture = rt;

????????camera.Render();

????????RenderTexture.active = rt;

????????frame.ReadPixels(rect, 0, 0);

????????frame.Apply();

????????camera.targetTexture = null;?

????????RenderTexture.active = null;??

????????byte [] bytes = frame.EncodeToJPG();

????????File.WriteAllBytes(Application.persistentDataPath + "/" + name + ".jpg",bytes);

????????#if UNITY_IOS

????????_SavePhoto(Application.persistentDataPath + "/" + name + ".jpg");

????????#endif

????}

}

iOS代碼

[AppleScript]?純文本查看?復(fù)制代碼

#import <Foundation/Foundation.h>?

????

@interface UnityPlugins : NSObject?

- ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error??

????contextInfo: ( void *) contextInfo;?

@end

[AppleScript]?純文本查看?復(fù)制代碼

#import "UnityPlugins.h"?

@implementation UnityPlugins?

- ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error??

????contextInfo: ( void *) contextInfo?

????NSLog(@"保存結(jié)束");?

????if (error != nil) {?

????????NSLog(@"有錯(cuò)誤");?

????}?

void _SavePhoto(char *readAddr)?

????NSString *strReadAddr = [NSString stringWithUTF8String:readAddr];?

????UIImage *img = [UIImage imageWithContentsOfFile:strReadAddr];?

????NSLog([NSString stringWithFormat:@"w:%f, h:%f", img.size.width, img.size.height]);?

????UnityPlugins *instance = [UnityPlugins alloc];?

????UIImageWriteToSavedPhotosAlbum(img, instance,??

????????@selector(imageSaved:didFinishSavingWithError:contextInfo:), nil);?

@end

目錄結(jié)構(gòu)
?

導(dǎo)出Xcode工程后或者??修改Info.plist??打開 Info.plist，點(diǎn)擊 + 號(hào)，在 Key 中輸入：Privacy - Photo Library Additions Usage Description，Type 選擇 String，Value 中輸入你的提示語(yǔ)（比如XXX訪問相冊(cè)）再次 Build

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