在Android中检索特定文件夹的图像

Question

在我的应用程序中,我创建了GridView显示特定文件夹中的图像.问题是我想从DCIM/100ANDRO文件夹中检索图像.应该通过查询传递哪种类型的参数来检索此类图像？请给我解决方案.

我正在使用以下代码来检索哪些代码可以让我拍摄相机拍摄的图像

        //importing only camera images and storing in ArrayList of class Images     type
        String[] projection = {
        MediaStore.Images.Media._ID, MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
        MediaStore.Images.Media.DISPLAY_NAME
        };
        String selection = MediaStore.Images.Media.BUCKET_DISPLAY_NAME + " = ?";
        String[] selectionArgs = new String[] {
            "Camera"
        };

        Cursor mImageCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, selection, selectionArgs, null ); 

        if (mImageCursor != null)
        {

            mImageCursor.moveToFirst();

            for (int i = 0; i < mImageCursor.getCount(); i++)
            {
                Images im=new Images();
                eachImageView=new ImageView(this);
                int imageId = mImageCursor.getInt((mImageCursor.getColumnIndex( MediaStore.Images.Media._ID)));
                Bitmap bm = MediaStore.Images.Thumbnails.getThumbnail(getContentResolver(), 
                    imageId, MediaStore.Images.Thumbnails.MINI_KIND, null);
                im.setBitmap(bm);
                eachImageView.setImageBitmap(bm);
                im.setImageView(eachImageView);

                arrayOfImages.add(im);

                mImageCursor.moveToNext();
            }
        }

建议将不胜感激!

Answer 1

File folder = new File(Environment.getExternalStorageDirectory().toString() + "/Folder Name/");
folder.mkdirs();
File[] allFiles = folder.listFiles(new FilenameFilter() {
    public boolean accept(File dir, String name) {
        return (name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".png"));
    }
});

Answer 2

一旦检查了这个

 File sdcardPath = new File(Environment.getExternalStorageDirectory()
    .getPath() + "/100ANDRO"); 
   Log.v(sdcardPath.getPath());

检查这是否打印您需要的正确路径如果 sdcardPath 不为空，则尝试以下逻辑

int imageCount = sdcardPath.listFiles().length;
  for (int count = 0; count < imageCount - 1; count++) {
   ImageView eachImageView= new ImageView(this);
   Bitmap bmp = BitmapFactory.decodeFile(sdcardPath.listFiles()[count].getAbsolutePath());
   eachImageView.setImageBitmap(bmp);