java - Textviews in RelativeLayout not appearing below each other programatically -


i'm trying poisition textviews below text view within relativelayout, reason it's not working:

enter image description here

import android.graphics.color; import android.os.bundle; import android.support.annotation.nullable; import android.support.v4.widget.textviewcompat; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.gridlayout.layoutparams; import android.widget.relativelayout; import android.widget.textview;  import com.companyname.projectname.r;  import static com.companyname.projectname.r.id.fl_relativelayout;   public class fragmentfl extends android.support.v4.app.fragment {      public fragmentfl() {     }      @override     public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {          return inflater.inflate(r.layout.fragment_fl, container, false);     }      @override     public void onactivitycreated(@nullable bundle savedinstancestate) {         view v = getview();         assert v != null;          relativelayout relativelayout = v.findviewbyid(fl_relativelayout);          relativelayout.layoutparams rlp = new relativelayout.layoutparams(layoutparams.wrap_content, layoutparams.wrap_content);          // add text views         textview txt1 = new textview(getactivity());         txt1.settext("blue");         textviewcompat.settextappearance(txt1, android.r.style.textappearance_large);         txt1.settextcolor(color.black);          textview txt2 = new textview(getactivity());         txt2.settext("black");         textviewcompat.settextappearance(txt2, android.r.style.textappearance_medium);         txt2.settextcolor(color.black);          textview txt3 = new textview(getactivity());         txt3.settext("green");         textviewcompat.settextappearance(txt3, android.r.style.textappearance_large);         txt3.settextcolor(color.black);          textview txt4 = new textview(getactivity());         txt4.settext("red");         textviewcompat.settextappearance(txt4, android.r.style.textappearance_medium);         txt4.settextcolor(color.black);          textview txt5 = new textview(getactivity());         txt5.settext("yellow");         textviewcompat.settextappearance(txt5, android.r.style.textappearance_large);         txt5.settextcolor(color.black);          textview txt6 = new textview(getactivity());         txt6.settext("white");         textviewcompat.settextappearance(txt6, android.r.style.textappearance_medium);         txt6.settextcolor(color.black);          txt1.setid(view.generateviewid());         txt2.setid(view.generateviewid());         txt3.setid(view.generateviewid());         txt4.setid(view.generateviewid());         txt5.setid(view.generateviewid());         txt6.setid(view.generateviewid());          rlp.addrule(relativelayout.below, txt1.getid());         rlp.addrule(relativelayout.below, txt2.getid());         rlp.addrule(relativelayout.below, txt3.getid());         rlp.addrule(relativelayout.below, txt4.getid());         rlp.addrule(relativelayout.below, txt5.getid());         txt2.setlayoutparams(rlp);         txt3.setlayoutparams(rlp);         txt4.setlayoutparams(rlp);         txt5.setlayoutparams(rlp);         txt6.setlayoutparams(rlp);          relativelayout.addview(txt1);         relativelayout.addview(txt2);         relativelayout.addview(txt3);         relativelayout.addview(txt4);         relativelayout.addview(txt5);         relativelayout.addview(txt6);           super.onactivitycreated(savedinstancestate);     } }

you need use different layoutparams each textview in 

 rlp.addrule(relativelayout.below, txt1.getid());  rlp1.addrule(relativelayout.below, txt2.getid());  rlp2.addrule(relativelayout.below, txt3.getid());  rlp3.addrule(relativelayout.below, txt4.getid());  rlp4.addrule(relativelayout.below, txt5.getid());      txt2.setlayoutparams(rlp);     txt3.setlayoutparams(rlp1);     txt4.setlayoutparams(rlp2);     txt5.setlayoutparams(rlp3);     txt6.setlayoutparams(rlp4);

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