android - Using two layout in xml but getting an error: must call removeView() on the child's parent first -

i have searched the issue couldn't find solution according situation. using 2 table layouts in xml layout , adding dynamically created rows these layouts. each row contain further views. here code

button b[]; edittext ed[]; tablelayout layouttable,layoutbutton; linearlayout llayouttable,llayoutbutton; int value,answer; tablerow row[],rowb[]; textview tv[],tv1[],tv2[],tv3[];  @suppresslint("newapi") @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.table_game_layout);     intent intent = getintent();     value = intent.getintextra("keyint", 0);      layouttable    = (tablelayout)findviewbyid(r.id.layouttable);     layoutbutton   = (tablelayout)findviewbyid(r.id.layoutbutton);     layouttable.removeallviews();     layoutbutton.removeallviews();      tv   = new textview[17];     row  = new tablerow[17];     tv1  = new textview[17];     tv2  = new textview[17];     tv3  = new textview[17];     ed   = new edittext[17];     b    = new button[17];     rowb = new tablerow[5];           layoutparams params = new layoutparams(android.support.v4.view.viewpager.layoutparams.wrap_content,                  android.support.v4.view.viewpager.layoutparams.match_parent);              layouttable.setlayoutparams(params);             layoutbutton.setlayoutparams(params);              android.widget.tablerow.layoutparams params1 = new tablerow.layoutparams(0,layoutparams.wrap_content,1f);              for(int i=1; i<=16; i++){                  tv[i]  = new textview(this);                 tv1[i] = new textview(this);                 tv2[i] = new textview(this);                 tv3[i] = new textview(this);                 ed[i]  = new edittext(this);                 row[i] = new tablerow(this);                 row[i].removeallviews();                 tv[i].setlayoutparams(params1);                 tv1[i].setlayoutparams(params1);                 tv2[i].setlayoutparams(params1);                 ed[i].setlayoutparams(params1);                 tv3[i].setlayoutparams(params1);                 tv[i].settextsize(30);                 tv1[i].settextsize(30);                 tv2[i].settextsize(30);                 tv3[i].settextsize(30);                 ed[i].settextsize(30);                 tv[i].settext(""+value);                 tv1[i].settext("x");                 tv2[i].settext(""+i);                 tv3[i].settext("=");                 row[i].addview(tv[i]);                 row[i].addview(tv1[i]);                 row[i].addview(tv2[i]);                 row[i].addview(tv3[i]);                 row[i].addview(ed[i]);                  answer= i*value;                 b[i] = new button(this);                 b[i].settext(""+answer);                  layouttable.addview(row[i]);              }              for(int i=1; i<=4; i++){                 int j=1;                 rowb[i] = new tablerow(this);                 rowb[i].removeallviews();                 rowb[i].addview(b[j]);                 rowb[i].addview(b[j+1]);                 rowb[i].addview(b[j+2]);                 rowb[i].addview(b[j+3]);                 j+=4;                 layoutbutton.addview(rowb[i]);       } 

}

heren xml layout

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >  <linearlayout     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight="2"     android:orientation="vertical" >      <scrollview         android:layout_width="match_parent"         android:layout_height="wrap_content" >          <linearlayout             android:id="@+id/llayouttable"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:orientation="vertical" >              <tablelayout                 android:id="@+id/layouttable"                 android:layout_width="match_parent"                 android:layout_height="wrap_content" >               </tablelayout>          </linearlayout>     </scrollview>  </linearlayout>  <linearlayout     android:id="@+id/llayoutbutton"     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight="1"     android:orientation="vertical" >      <tablelayout         android:id="@+id/layoutbutton"         android:layout_width="match_parent"         android:layout_height="wrap_content" >       </tablelayout>  </linearlayout> 

here logcat errors

07-14 14:57:53.382: e/androidruntime(5538): fatal exception: main 07-14 14:57:53.382: e/androidruntime(5538): java.lang.runtimeexception: unable start activity componentinfo{com.example.tablegame/com.example.tablegame.mainactivity}: java.lang.illegalstateexception: specified child has parent. must call removeview() on child's parent first. 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread.performlaunchactivity(activitythread.java:2180) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2230) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread.access$600(activitythread.java:141) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread$h.handlemessage(activitythread.java:1234) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.os.handler.dispatchmessage(handler.java:99) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.os.looper.loop(looper.java:137) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread.main(activitythread.java:5041) 07-14 14:57:53.382: e/androidruntime(5538):     @ java.lang.reflect.method.invokenative(native method) 07-14 14:57:53.382: e/androidruntime(5538):     @ java.lang.reflect.method.invoke(method.java:511) 07-14 14:57:53.382: e/androidruntime(5538):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793) 07-14 14:57:53.382: e/androidruntime(5538):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:560) 07-14 14:57:53.382: e/androidruntime(5538):     @ dalvik.system.nativestart.main(native method) 07-14 14:57:53.382: e/androidruntime(5538): caused by: java.lang.illegalstateexception: specified child has parent. must call removeview() on child's parent first. 07-14 14:57:53.382: e/androidruntime(5538):     @ android.view.viewgroup.addviewinner(viewgroup.java:3339) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.view.viewgroup.addview(viewgroup.java:3210) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.view.viewgroup.addview(viewgroup.java:3155) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.view.viewgroup.addview(viewgroup.java:3131) 07-14 14:57:53.382: e/androidruntime(5538):     @ com.example.tablegame.mainactivity.oncreate(mainactivity.java:105) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activity.performcreate(activity.java:5104) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1080) 07-14 14:57:53.382: e/androidruntime(5538):     @ android.app.activitythread.performlaunchactivity(activitythread.java:2144) 07-14 14:57:53.382: e/androidruntime(5538):     ... 11 more