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:

Unity 代码：AndroidPhoto.cs

using UnityEngine;
using System.Collections;

public class AndroidPhoto : MonoBehaviour {

	// Use this for initialization
	void Start () {
	
	}
	
        //打开相册	
	public void OpenPhoto()
	{
		AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
		AndroidJavaObject jo = jc.GetStatic("currentActivity");
		jo.Call("OpenGallery");       
	}
        
        //打开相机
	public void OpenCamera()
	{
		AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
		AndroidJavaObject jo = jc.GetStatic("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().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