Hi Jason,
Have you tried the updated version of my code (http://
mihaifonoage.blogspot.com/2009/11/displaying-images-from-sd-card-
in.html) ? I am curious if you'll encounter the same problem with it.
I am still using MediaStore, so you might. It would also be
interesting to know what is wrong with the above code. I remember
getting the same behavior on the emulator once, but I deleted the AVD,
created a new one, and could not reproduce it afterwards.
By the way, what phone are you using, and what version of the SDK do
you have on it?
Mihai Fonoage
On Nov 22, 1:38 pm, JasonMP <hyperje...@gmail.com> wrote:
> Hello, I'm testing some code from a demo found in a forum and I'm
> getting some strange results. My goal is to be able to allow users to
> access the pictures on their device to choose an avatar/logo. This
> code run flawlessly except that I only get a handful of images on the
> phone. And its not even always the same images. Whats more is that
> it loads those images into a gridview and repeats them for what looks
> like a number of times equal to the actual number of images that are
> on the device. And on top of that if I scroll down the through the
> pictures, and scroll back up, it reorders the pictures from what they
> were previously. Each time I load the app the pictures seem to be
> different as well. I have around 400 pictures stored on my phone, and
> thats what I'm using to test. If someone could shed some light on
> this for me that would be great. This is my first time using a URI to
> access content to I'm not sure where to start troubleshooting this
> one.
>
> public class gallery extends Activity {
>
> /**
> * Cursor used to access the results from querying for images on
> the SD card.
> */
> private Cursor cursor;
> /*
> * Column index for the Thumbnails Image IDs.
> */
> private int columnIndex;
>
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.gallery);
>
> // Set up an array of the Thumbnail Image ID column we want
> String[] projection = {MediaStore.Images.Thumbnails._ID};
> // Create the cursor pointing to the SDCard
> cursor = managedQuery
> ( MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,
> projection, // Which columns to return
> null, // Return all rows
> null,
> MediaStore.Images.Thumbnails.IMAGE_ID);
> // Get the column index of the Thumbnails Image ID
> columnIndex = cursor.getColumnIndexOrThrow
> (MediaStore.Images.Thumbnails._ID);
>
> GridView sdcardImages = (GridView) findViewById(R.id.sdcard);
> sdcardImages.setAdapter(new ImageAdapter(this));
>
> // Set up a click listener
> sdcardImages.setOnItemClickListener(new OnItemClickListener()
> {
> public void onItemClick(AdapterView parent, View v, int
> position, long id) {
> // Get the data location of the image
> String[] projection = {MediaStore.Images.Media.DATA};
> cursor = managedQuery
> ( MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
> projection, // Which columns to return
> null, // Return all rows
> null,
> null);
> columnIndex = cursor.getColumnIndexOrThrow
> (MediaStore.Images.Media.DATA);
> cursor.moveToPosition(position);
> // Get image filename
> String imagePath = cursor.getString(columnIndex);
> // Use this path to do further processing, i.e. full
> screen display
> }
> });
> }
>
> /**
> * Adapter for our image files.
> */
> private class ImageAdapter extends BaseAdapter {
>
> private Context context;
>
> public ImageAdapter(Context localContext) {
> context = localContext;
> }
>
> public int getCount() {
> return cursor.getCount();
> }
> public Object getItem(int position) {
> return position;
> }
> public long getItemId(int position) {
> return position;
> }
> public View getView(int position, View convertView, ViewGroup
> parent) {
> ImageView picturesView;
> if (convertView == null) {
> picturesView = new ImageView(context);
> // Move cursor to current position
> cursor.moveToPosition(position);
> // Get the current value for the requested column
> int imageID = cursor.getInt(columnIndex);
> // Set the content of the image based on the provided
> URI
> picturesView.setImageURI(Uri.withAppendedPath(
>
> MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" + imageID));
> picturesView.setScaleType
> (ImageView.ScaleType.FIT_CENTER);
> picturesView.setPadding(8, 8, 8, 8);
> picturesView.setLayoutParams(new GridView.LayoutParams
> (100, 100));
> }
> else {
> picturesView = (ImageView)convertView;
> }
> return picturesView;
> }
> }
>
>
>
> }
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