java - border not display in my images -
my gallery display images image select don't know how differentiate selected image , other images.. want set border line in image...now attach screen shots me....
my screenshot: 
i expect type of screen in emulator: 
package videothumb.videothumb; import android.app.activity; import android.content.context; import android.content.intent; import android.database.cursor; import android.graphics.bitmap; import android.os.bundle; import android.provider.mediastore; import android.view.view; import android.view.viewgroup; import android.widget.adapterview; import android.widget.baseadapter; import android.widget.gallery; import android.widget.imageview; import android.widget.listview; import android.widget.textview; import android.widget.toast; import android.widget.adapterview.onitemclicklistener; import android.net.uri; import android.view.window; import android.view.windowmanager; import android.graphics.color; public class videothumb extends activity{ private final static uri media_external_content_uri = mediastore.video.media.external_content_uri; private final static string _id = mediastore.video.media._id; private final static string media_data = mediastore.video.media.data; //flag 1 used images selection private gallery _gallery; private cursor _cursor; private int _columnindex; private int[] _videosid; private uri _contenturi; private int video_column_index; //private static final int menu_id_zoom = 0; protected context _context; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); _context = getapplicationcontext(); setcontentview(r.layout.main); //set gridview gallery _gallery = (gallery) findviewbyid(r.id.videogrdvw); //set default external/sdcard uri _contenturi = media_external_content_uri; //initialize videos uri //showtoast(_contenturi.getpath()); initvideosid(); //set gallery adapter setgalleryadapter(); } private void setgalleryadapter() { _gallery.setadapter(new videogalleryadapter(_context)); _gallery.setonitemclicklistener(videogridlistener); } private void initvideosid() { try { //here set string array of thumbnail id column want string [] proj={_id}; // create cursor pointing external thumbnail store _cursor = managedquery(_contenturi, proj, // columns return null, // clause; rows return (all rows) null, // clause selection arguments (none) null); // order-by clause (ascending name) int count= _cursor.getcount(); system.out.println("total"+_cursor.getcount()); // column index of thumbnail id _columnindex = _cursor.getcolumnindex(_id); //initialize _videosid = new int[count]; //move position first element _cursor.movetofirst(); for(int i=0;i<count;i++) { int id = _cursor.getint(_columnindex); // _videosid[i]= id; // _cursor.movetonext(); // } }catch(exception ex) { showtoast(ex.getmessage().tostring()); } } protected void showtoast(string msg) { toast.maketext(_context, msg, toast.length_long).show(); } private onitemclicklistener videogridlistener = new onitemclicklistener() { public void onitemclick(adapterview parent, view v, int position, long id) { // want data location of file string [] proj={media_data}; // request our cursor again _cursor = managedquery(_contenturi, proj, // columns return null, // clause; rows return (all rows) null, // clause selection arguments (none) null); //system.gc(); // video_column_index = _cursor.getcolumnindexorthrow(mediastore.video.media.data); _columnindex = _cursor.getcolumnindex(media_data); // lets move selected item in cursor _cursor.movetoposition(position); string filename = _cursor.getstring(_columnindex); intent intent = new intent(videothumb.this, viewvideo.class); intent.putextra("videofilename", filename); startactivity(intent); showtoast(filename); // toast.maketext(videothumb.this, "" + position, toast.length_short).show(); } }; private class videogalleryadapter extends baseadapter { public videogalleryadapter(context c) { _context = c; } public int getcount() { return _videosid.length; } public object getitem(int position) { return position; } public long getitemid(int position) { return position; } public view getview(int position, view convertview, viewgroup parent) { imageview imgvw= new imageview(_context); try { if(convertview!=null) { imgvw= (imageview) convertview; } imgvw.setimagebitmap(getimage(_videosid[position])); imgvw.setadjustviewbounds(true); //imgvw.draw(canvas); //imgvw.setbackgroundcolor(color.black); imgvw.setlayoutparams(new gallery.layoutparams(150, 100)); imgvw.setpadding(5,5,5,5); } catch(exception ex) { system.out.println("startactivity:getview()-135: ex " + ex.getclass() +", "+ ex.getmessage()); } return imgvw; } // create thumbnail on fly private bitmap getimage(int id) { bitmap thumb = mediastore.video.thumbnails.getthumbnail(getcontentresolver(),id, mediastore.video.thumbnails.micro_kind, null); system.out.println("ff"+mediastore.video.thumbnails.getthumbnail (getcontentresolver(), id, mediastore.video.thumbnails.micro_kind, null)); return thumb; } } } 
i set background color....
you can set background color of imageview same border color. , set padding of imageview size of border. work want.
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