Unity调用Android 相机和相册

安卓代码：MainActivity.java

package com.xx.xxx; //对应unity的包名import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import com.unity3d.player.UnityPlayer;import com.unity3d.player.UnityPlayerActivity;import android.app.Activity;import android.content.ContentResolver;import android.content.Intent;import android.database.Cursor;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.util.Log;public class MainActivity extends UnityPlayerActivity {//public class MainActivity extends Activity {private static final String TAG = MainActivity.class.getSimpleName();private static final int PHOTO_REQUEST_CODE = 1;//相册public static final int PHOTOHRAPH = 2;// 拍照private static final boolean DEBUG = false;//private String unitygameobjectName = "Main Camera";private String unitygameobjectName = "BGPlane"; //Unity 中对应挂脚本对象的名称public static final int NONE = 0;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);//        OpenGallery();    }        //调用相机    public void takephoto(){         Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);         intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "temp.jpg")));         startActivityForResult(intent, PHOTOHRAPH);        }        //调用相册    public void OpenGallery()    {   Intent intent = new Intent(Intent.ACTION_PICK,null);   intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");   startActivityForResult(intent, PHOTO_REQUEST_CODE);    }       @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stub   super.onActivityResult(requestCode, resultCode, data);   if (resultCode == NONE){   return;   }   if(PHOTO_REQUEST_CODE == requestCode){   if(data == null){   return;   }   Uri uri = data.getData();   String imagePath = getImagePath(uri);   if(DEBUG){   Log.d(TAG, imagePath);   }   //调用unity中方法 GetImagePath（imagePath）   UnityPlayer.UnitySendMessage(unitygameobjectName, "GetImagePath", imagePath);   }      if (requestCode == PHOTOHRAPH) {           String path = Environment.getExternalStorageDirectory() + "/temp.jpg";           if(DEBUG){           Log.e("path:", path);           }           //调用unity中方法 GetTakeImagePath（path）           UnityPlayer.UnitySendMessage(unitygameobjectName, "GetTakeImagePath", path);           try {           Bitmap bitmap = BitmapFactory.decodeFile(path);             SaveBitmap(bitmap);} catch (IOException e) {e.printStackTrace();}       }      }        private String getImagePath(Uri uri)    {    if(null == uri) return null;    String path = null;        final String scheme = uri.getScheme();        if (null == scheme) {            path = uri.getPath();        } else if (ContentResolver.SCHEME_FILE.equals(scheme)) {            path = uri.getPath();        } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {            String[] proj = { MediaStore.Images.Media.DATA };            Cursor cursor = getContentResolver().query(uri, proj, null, null,                    null);            int nPhotoColumn = cursor                    .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);            if (null != cursor) {                cursor.moveToFirst();                path = cursor.getString(nPhotoColumn);            }            cursor.close();        }return path;    }        public void SaveBitmap(Bitmap bitmap) throws IOException {    FileOutputStream fOut = null;String path = "/mnt/sdcard/DCIM/"; try {  //查看这个路径是否存在，  //如果并没有这个路径，  //创建这个路径  File destDir = new File(path);  if (!destDir.exists())  {  destDir.mkdirs();  }            String FILE_NAME = System.currentTimeMillis() + ".jpg"; fOut = new FileOutputStream(path + "/" + FILE_NAME) ;} catch (FileNotFoundException e) {e.printStackTrace();}//将Bitmap对象写入本地路径中bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);try {fOut.flush();} catch (IOException e) {e.printStackTrace();}try {fOut.close();} catch (IOException e) {e.printStackTrace();}}}

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.xx.xxx"    android:versionCode="1"    android:versionName="1.0" ><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <uses-sdk        android:minSdkVersion="15"        android:targetSdkVersion="23" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        >        <activity            android:name="com.xx.xxx.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application>    </manifest>

Unity 代码：AndroidPhoto.cs

using UnityEngine;using System.Collections;public class AndroidPhoto : MonoBehaviour {// Use this for initializationvoid Start () {}        //打开相册public void OpenPhoto(){AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");jo.Call("OpenGallery");       }                //打开相机public void OpenCamera(){AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");jo.Call("takephoto");       }public void GetImagePath(string imagePath){ if (imagePath == null)return;StartCoroutine("LoadImage",imagePath);}public void GetTakeImagePath(string imagePath){if (imagePath == null)return;StartCoroutine("LoadImage",imagePath);}private IEnumerator LoadImage(string imagePath){WWW www = new WWW ("file://"+imagePath);yield return www;if (www.error == null) {                       //成功读取图片，写自己的逻辑GetComponent<ChangePhoto>().LoadAndroidImageOK(www.texture);}else{Debug.LogError("LoadImage>>>www.error:"+www.error);}}}

注意：1.android包名要和unity保持一致  

            2.unitygameobjectName要对应   

            3.须将unity下的classes.jar拷贝至安卓工程libs下方可正确编译再导出为jar包，unity5.4.1 下classes.jar 地址：C:\Program Files\Unity_5_4_1\Editor\Data\PlaybackEngines\AndroidPlayer\Variations\mono\Development\Classes