android 获取手机中的所有图片或某一目录下的图片

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获取手机中的所有图片，并过滤获取某一目录下的图片。（注释掉的代码可以按照目录分组）
private void getAllPhotoInfo() {        new Thread(new Runnable() {            @Override            public void run() {//                List<MediaBean> mediaBeen = new ArrayList<>();                HashMap<String,List<MediaBean>> allPhotosTemp = new HashMap<>();//所有照片                Uri mImageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;                String[] projImage = { MediaStore.Images.Media._ID                        , MediaStore.Images.Media.DATA                        ,MediaStore.Images.Media.SIZE                        ,MediaStore.Images.Media.DISPLAY_NAME};                final Cursor mCursor = getContentResolver().query(mImageUri,                        projImage,                        MediaStore.Images.Media.MIME_TYPE + "=? or " + MediaStore.Images.Media.MIME_TYPE + "=?",                        new String[]{"image/jpeg", "image/png"},                        MediaStore.Images.Media.DATE_MODIFIED+" desc");                if(mCursor!=null){                    while (mCursor.moveToNext()) {                        // 获取图片的路径                        String path = mCursor.getString(mCursor.getColumnIndex(MediaStore.Images.Media.DATA));                        int size = mCursor.getInt(mCursor.getColumnIndex(MediaStore.Images.Media.SIZE))/1024;                        String displayName = mCursor.getString(mCursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME));                        //用于展示相册初始化界面                        if(path.contains("/storage/emulated/0/messageBoard/photoImgs")){                            mediaBeen.add(new MediaBean(path,size,displayName));                        }//                        // 获取该图片的父路径名//                        String dirPath = new File(path).getParentFile().getAbsolutePath();//                        //                        //存储对应关系//                        if (allPhotosTemp.containsKey(dirPath)) {//                            List<MediaBean> data = allPhotosTemp.get(dirPath);//                            data.add(new MediaBean(path,size,displayName));////                            Log.e(TAG,"getAllPhotoInfo  "+data.size()+",path="+data.get(0).getPath()+",name="+data.get(0).getDisplayName());//                            continue;//                        } else {//                            List<MediaBean> data = new ArrayList<>();//                            data.add(new MediaBean(path,size,displayName));//                            allPhotosTemp.put(dirPath,data);////                            Log.e(TAG,"getAllPhotoInfo  else "+data.size()+",path="+data.get(0).getPath()+",name="+data.get(0).getDisplayName());//                        }                    }                    mCursor.close();                }                //更新界面                runOnUiThread(new Runnable() {                    @Override                    public void run() {                        //...                        Log.e(TAG,"mediaBeen="+mediaBeen.size());                        albumAdapter = new AlbumAdapter(AvaterActivity.this,mediaBeen);                        gvAlbum.setAdapter(albumAdapter);                        gvAlbum.setOnItemClickListener(new AdapterView.OnItemClickListener() {                            @Override                            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                                Intent cropIntent = new Intent(mContext, CropImgActivity.class);                                cropIntent.putExtra("status",status);                                cropIntent.putExtra("takepath",mediaBeen.get(position).getPath());                                startActivity(cropIntent);                            }                        });                    }                });            }        }).start();    }
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