Android: Populate Gallery With Images from SDCard

Question

I'm trying to populate a Gallery view with images from a folder in the SDcard. I read the Gallery tutorial on Android Dev seen here: http://developer.android.com/resources/tutorials/views/hello-gallery.html, and can get it working with images from the drawable folder of my project.

My question is: how can I get an array of files from the Environment.getExternalStorageDirectory()+File.separator+"MyPictureDirectory folder, and then display them in the Gallery? Thanks!

Ponmalar · Accepted Answer · 2012-09-06 08:28:19Z

1

Try the following,

File file = new File( Environment.getExternalStorageDirectory()+File.separator+"MyPictureDirectory"+File.separator); File imageList[] = file.listFiles(); for(int i=0;i<imageList.length;i++) { //Add images in Gallery from imageList }

To set image from file path:

File imgFile = new File(imagefilepath); if(imgFile.exists()){ Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath()); ImageView myImage = (ImageView) findViewById(R.id.imageviewTest); myImage.setImageBitmap(myBitmap); }

edited Sep 6, 2012 at 8:28

answered May 24, 2012 at 4:19

Ponmalar

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4 Comments

Siddhesh Over a year ago

how do i set file object to imageview?

Siddhesh Over a year ago

i have tried all the methods available but still my gridview lags because of bitmap decoading

Ponmalar Over a year ago

@Siddhesh: Are you getting any error,whats your status Siddhesh?

Siddhesh Over a year ago

no errors... code is running perfectly but just that grid lags because

cr.moveToPosition(position); int imageID = cr.getInt(columnIndex); Uri uri = Uri.withAppendedPath( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, Integer.toString(imageID) ); String url = uri.toString(); int originalImageId = Integer.parseInt(url.substring(url.lastIndexOf("/") + 1, url.length())); Bitmap b = MediaStore.Images.Thumbnails.getThumbnail(getContentResolver(), originalImageId, MediaStore.Images.Thumbnails.MINI_KIND, null); picturesView.setImageBitmap(b);

in getView()

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