Android images gridview -

the code display images sd card , whatsapp in app when run code pictures displayed there random whitespaces between photos , photos not of same size. how resize image ? heres code main activity:

import java.io.file; import java.util.arraylist;   import android.app.actionbar;  import android.app.activity;  import android.content.context;  import android.graphics.bitmapfactory;  import android.os.bundle;  import android.os.environment;  import android.provider.mediastore;   import android.view.window;  import android.widget.baseadapter;  import android.widget.gridview;  import android.widget.toast;    public class mainactivity extends activity {    private imageadapter imageadapter;    @override    public void oncreate(bundle savedinstancestate) {    super.oncreate(savedinstancestate);    setcontentview(r.layout.activity_main);    gridview gridview = (gridview) findviewbyid(r.id.gridview);    imageadapter = new imageadapter(this); gridview.setadapter(imageadapter);  string externalstoragedirectorypath = environment         .getexternalstoragedirectory()         .getabsolutepath();  string targetpath = externalstoragedirectorypath + "/dcim/camera"; file f=new file(environment.getexternalstoragedirectory()+"/whatsapp"); if(f.exists()){  string path=environment.getexternalstoragedirectory()+"/whatsapp/media/whatsapp images";   file t=new file(path);   file[] fo=t.listfiles();   for(file fil : fo){     imageadapter.add(fil.getabsolutepath());    }   } toast.maketext(getapplicationcontext(), targetpath, toast.length_long).show(); file targetdirector = new file(targetpath);  file[] files = targetdirector.listfiles(); (file file : files) {     imageadapter.add(file.getabsolutepath()); } } 

heres code image adapter:

import java.util.arraylist; import android.content.context; import android.graphics.bitmap; import android.graphics.bitmapfactory; import android.view.view; import android.view.viewgroup; import android.widget.baseadapter; import android.widget.gridview; import android.widget.imageview;   public class imageadapter extends baseadapter {    private context context;   arraylist<string> imagelist = new arraylist<string>();      public imageadapter(context c) {    context = c;   }    void add(string path){   imagelist.add(path); }  @override public int getcount() { return imagelist.size(); }  @override public object getitem(int arg0) { // todo auto-generated method stub return null; }  @override public long getitemid(int position) { // todo auto-generated method stub return 0; }  @override public view getview(int position, view convertview, viewgroup parent)           { imageview imageview; if (convertview == null) {     imageview = new imageview(context);     imageview.setlayoutparams(new gridview.layoutparams(100,100));     imageview.setscaletype(imageview.scaletype.center_crop);     imageview.setpadding(8, 8, 8, 8); } else {     imageview = (imageview) convertview; }  bitmap bm = decodesampledbitmapfromuri(imagelist.get(position), 100,100); imageview.setimagebitmap(bm); return imageview; }  public bitmap decodesampledbitmapfromuri(string path, int reqwidth, int reqheight) {  bitmap bm = null; final bitmapfactory.options options = new bitmapfactory.options(); options.injustdecodebounds = true; bitmapfactory.decodefile(path, options); options.insamplesize = calculateinsamplesize(options, reqwidth, reqheight);  options.injustdecodebounds = false; bm = bitmapfactory.decodefile(path, options);  return bm; 

}

public int calculateinsamplesize(      bitmapfactory.options options, int reqwidth, int reqheight) { final int height = options.outheight; final int width = options.outwidth; int insamplesize = 1;  if (height > reqheight || width > reqwidth) {     if (width > height) {         insamplesize = math.round((float)height / (float)reqheight);     } else {         insamplesize = math.round((float)width / (float)reqwidth);     } }  return insamplesize; 

}

as said before, code runs sizee of image not uniform , there whitespaces. please me solve it.

try set scale type fit_xy

imageview.setscaletype(imageview.scaletype.fit_xy);