private String[] mFileStrings;
ArrayList<String> f = new ArrayList<String>();
public void getFromSdcard()
{
File file= new File(android.os.Environment.getExternalStorageDirectory(),"Your Sdcard");
if (file.isDirectory())
{
listFile = file.listFiles();//get list of files
for (int i = listFile.length-5; i < listFile.length; i++)
{
//get the length decrease it 5 . loop to last
mFileStrings[i] = listFile[i].getAbsolutePath();
f.add(listFile[i].getAbsolutePath());//add path of files to array list
System.out.println("...................................."+mFileStrings[i]);
}
}
}
You can get the path of files under a folder in your sdcard. But make sure the sdcard folder does not have other file formats. Then pass the arraylist to your adapter to display the same in coverflow
To filter files that are .png you can use the below
File dir= new File(android.os.Environment.getExternalStorageDirectory());
Then call
walkdir(dir);
ArrayList<String> filepath= new ArrayList<String>();//contains list of all files ending with
public void walkdir(File dir) {
String Patternpng = ".png";
File listFile[] = dir.listFiles();
if (listFile != null) {
for (int i = 0; i < listFile.length; i++) {
if (listFile[i].isDirectory()) {
walkdir(listFile[i]);
} else {
if (listFile[i].getName().endsWith(Patternpng)){
//Do what ever u want
filepath.add( listFile[i].getAbsolutePath());
}
}
}
}
}
From the comment made i assume you need to display last 5 items from your sdcard folder
int size= f.size()-5;
//get the size of arraylist then decrease it by 5
//then loop from that point to your arraylist size
//to get the last 5 items in the list
for(int j=size;j<f.size();j++)
{
System.out.println("Position = "+j);
System.out.println("Path of files"+f.get(j));
}
Your adapter
public class MyAdapter extends AbstractCoverFlowImageAdapter {
@Override
public int getCount() {
// TODO Auto-generated method stub
return f.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
//inflate layout
//do something
//use the edit 2 to get last 5 items in the arraylist.
ImageView image=(ImageView)vi.findViewById(R.id.ivv);
Bitmap b = BitmapFactory.decodeFile(f.get(position));
image.setImageBitmap(b);
}
}
UPDATE:
Add only last 5 file paths to your arraylist f in getFromSdcard()
Your listview item count is f.size()
To get the paths you can use f.get(position) in getview().
In getFromSdcard()
for (int i = listFile.length-5; i < listFile.length; i++)
// add only last 5 file paths from your folder
In your adapter
@Override
public int getCount() {
// TODO Auto-generated method stub
return f.size();
}
In getView
ImageView image=(ImageView)vi.findViewById(R.id.ivv);
Bitmap b = BitmapFactory.decodeFile(f.get(position));
image.setImageBitmap(b);