gridview - how to display images saved in sdcard folder in android -

as working on displaying images saved in sdcard folder, found following link.

displaying images in gridview sdcard.

i using following code images specified folder in sdcard,but here getting 0 count.

mycode.jav

    string[] projection = {mediastore.images.media._id};      final string[] columns = { mediastore.images.media.data,mediastore.images.media._id };     final string orderby = mediastore.images.media._id;     cursor imagecursor = managedquery( mediastore.images.media.external_content_uri,             projection,              mediastore.images.media.data + " ? ",             new string[] {"/my_images"},               null);     int image_column_index = imagecursor.getcolumnindex(mediastore.images.media._id);     this.count = imagecursor.getcount();     this.thumbnails = new bitmap[this.count];     this.arrpath = new string[this.count];     this.thumbnailsselection = new boolean[this.count];      (int = 0; < this.count; i++) {         imagecursor.movetoposition(i);         int id = imagecursor.getint(image_column_index);         int datacolumnindex = imagecursor                 .getcolumnindex(mediastore.images.media.data);         thumbnails[i] = mediastore.images.thumbnails.getthumbnail(                 getapplicationcontext().getcontentresolver(), id,                 mediastore.images.thumbnails.micro_kind, null);         arrpath[i] = imagecursor.getstring(datacolumnindex);     }     imageadapter = new imageadapter();     secure_gallery_grid.setadapter(imageadapter);     imagecursor.close(); 

but here per following link images saved in sd card displaying. but here want display images saved in particular folder, created "my_images" folder & saved images in folder. want display images folder & need display in gridview per link.

you can path of files particualr folder below

once path of files ca display images in gridview

arraylist<string> f = new arraylist<string>();// list of file paths file[] listfile;  public void getfromsdcard() {     file file= new file(android.os.environment.getexternalstoragedirectory(),"tmyfolder");          if (file.isdirectory())         {             listfile = file.listfiles();               (int = 0; < listfile.length; i++)             {                  f.add(listfile[i].getabsolutepath());              }         } } 

remember add permissionin manifest file

<uses-permission android:name="android.permission.write_external_storage"/> 

by having write permission have read permission default.

example

main.xml

    <?xml version="1.0" encoding="utf-8"?>     <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent">  <gridview     android:id="@+id/phoneimagegrid"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:columnwidth="90dp"     android:gravity="center"     android:horizontalspacing="10dp"     android:numcolumns="auto_fit"     android:stretchmode="columnwidth"     android:verticalspacing="10dp" />     </relativelayout> 

gelleryitem.xml

   <?xml version="1.0" encoding="utf-8"?>    <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <imageview android:id="@+id/thumbimage" android:layout_width="wrap_content"     android:layout_height="wrap_content" android:layout_centerinparent="true" /> <checkbox android:id="@+id/itemcheckbox" android:layout_width="wrap_content"     android:layout_height="wrap_content" android:layout_alignparentright="true"     android:layout_alignparenttop="true" />     </relativelayout> 

androidcustomgalleryactivity.java

   public class androidcustomgalleryactivity extends activity { private int count; private bitmap[] thumbnails; private boolean[] thumbnailsselection; private string[] arrpath; private imageadapter imageadapter; arraylist<string> f = new arraylist<string>();// list of file paths file[] listfile;   /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.main);     getfromsdcard();     gridview imagegrid = (gridview) findviewbyid(r.id.phoneimagegrid);     imageadapter = new imageadapter();     imagegrid.setadapter(imageadapter);   } public void getfromsdcard() {     file file= new file(android.os.environment.getexternalstoragedirectory(),"maplebear");          if (file.isdirectory())         {             listfile = file.listfiles();               (int = 0; < listfile.length; i++)             {                  f.add(listfile[i].getabsolutepath());              }         } }  public class imageadapter extends baseadapter {     private layoutinflater minflater;      public imageadapter() {         minflater = (layoutinflater) getsystemservice(context.layout_inflater_service);     }      public int getcount() {         return f.size();     }      public object getitem(int position) {         return position;     }      public long getitemid(int position) {         return position;     }      public view getview(int position, view convertview, viewgroup parent) {         viewholder holder;         if (convertview == null) {             holder = new viewholder();             convertview = minflater.inflate(                     r.layout.galleryitem, null);             holder.imageview = (imageview) convertview.findviewbyid(r.id.thumbimage);              convertview.settag(holder);         }         else {             holder = (viewholder) convertview.gettag();         }           bitmap mybitmap = bitmapfactory.decodefile(f.get(position));         holder.imageview.setimagebitmap(mybitmap);         return convertview;     } } class viewholder {     imageview imageview;   }     } 

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