Displaying images from a specific folder on the SDCard using a gridview

Question

I\'m attempting to create a gridview that is loaded with images from a specific folder that resides on an SDCard. The path to the folder is known, (\"/sdcard/pictures\") , b

Answer 1

You need to do a few more steps than the GridView tutorial on developer.android.com. Using the following tutorial http://developer.android.com/resources/tutorials/views/hello-gridview.html

You'll want to add a method to create ImageView's of the files from your sd card:

Create/add a Vector to your class variables (to hold a list of ImageViews):

private Vector mySDCardImages;

Initialize the vector:

mySDCardImages = new Vector();

Create a method to load images:

List drawablesId = new ArrayList();
int picIndex=12345;
File sdDir = new File("/sdcard/pictures");
File[] sdDirFiles = sdDir.listFiles();
for(File singleFile : sdDirFiles)
{
   ImageView myImageView = new ImageView(context);
   myImageView.setImageDrawable(Drawable.createFromPath(singleFile.getAbsolutePath());
   myImageView.setId(picIndex);
   picIndex++;
   drawablesId.add(myImageView.getId());
   mySDCardImages.add(myImageView);
}
mThumbIds = (Integer[])drawablesId.toArray(new Integer[0]);

Then down in your ImageAdapter method, change

imageView.setImageResource(mThumbIds[position]);

to

imageView.setImageDrawable(mySDCardImages.get(position).getDrawable());

Remove from the ImageAdapter the initialization of mThumbIds. (it should be up with the definition of mySDCardImages. Accessible to both class methods.)

(Quick and dirty version) Make sure to test your path, etc and catch any Exceptions.