java - Unable to expand a ExpandableListView in Android -
[edit]- changing question framing: how use android expandablelistview inside scrollview?
i implementing expandablelistview in android. whenever click on arrow expand i.e calling setongroupexpandlistener. list expands inside group itself. want below it. attaching code .
drawable_list_group.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:padding="8dp" android:background="@color/grey_transparent"> <textview android:id="@+id/lbllistheader" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingleft="?android:attr/expandablelistpreferreditempaddingleft" android:textsize="17dp" android:textcolor="@color/primary_dark_material_dark" /> </linearlayout> drawable_list_item.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <textview android:id="@+id/lbllistitem" android:layout_width="fill_parent" android:layout_height="match_parent" android:textsize="25sp" android:textcolor="@color/highlighted_text_material_light" android:paddingtop="5dp" android:paddingbottom="5dp" android:paddingleft="?android:attr/expandablelistpreferredchildpaddingleft" /> </linearlayout> preferences_content.xml(not start)
<linearlayout android:layout_width="match_parent" android:id="@+id/cuisine_preference_linear_layout" android:layout_height="match_parent" android:layout_margintop="@dimen/component_margin" android:orientation="vertical"> <textview android:id="@+id/cuisine_preference_label" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="@dimen/component_margin" android:gravity="left" android:paddingleft="@dimen/component_margin" android:text="cuisines" android:textstyle="bold" android:textsize="@dimen/subheading_text_size" /> <textview android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="@dimen/component_margin" android:gravity="left" android:paddingleft="@dimen/component_margin" android:text="choose 3 favourite cuisines:" android:textsize="@dimen/subheading_text_size" /> <view android:layout_width="match_parent" android:layout_height="@dimen/horizontal_line" android:layout_marginleft="@dimen/table_row_padding" android:layout_marginright="@dimen/table_row_padding" android:layout_margintop="@dimen/component_margin" android:background="@color/whitegrey" android:layout_marginbottom="30dp"/> <expandablelistview android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/lvexp"> </expandablelistview> </linearlayout> expandablelistadapter.java
package com.fonduetech.cravy.adapter; import android.widget.baseexpandablelistadapter; import java.util.hashmap; import java.util.list; import android.content.context; import android.graphics.typeface; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.textview; import com.fonduetech.cravy.r; /** * created admin on 05-aug-15. */ public class expandablelistadapter extends baseexpandablelistadapter { private context _context; private list<string> _listdataheader; // header titles // child data in format of header title, child title private hashmap<string, list<string>> _listdatachild; public expandablelistadapter(context context, list<string> listdataheader, hashmap<string, list<string>> listchilddata) { this._context = context; this._listdataheader = listdataheader; this._listdatachild = listchilddata; } @override public object getchild(int groupposition, int childposititon) { return this._listdatachild.get(this._listdataheader.get(groupposition)) .get(childposititon); } @override public long getchildid(int groupposition, int childposition) { return childposition; } @override public view getchildview(int groupposition, final int childposition, boolean islastchild, view convertview, viewgroup parent) { final string childtext = (string) getchild(groupposition, childposition); if (convertview == null) { layoutinflater infalinflater = (layoutinflater) this._context .getsystemservice(context.layout_inflater_service); convertview = infalinflater.inflate(r.layout.drawable_list_item, null); } textview txtlistchild = (textview) convertview .findviewbyid(r.id.lbllistitem); txtlistchild.settext(childtext); return convertview; } @override public int getchildrencount(int groupposition) { return this._listdatachild.get(this._listdataheader.get(groupposition)) .size(); } @override public object getgroup(int groupposition) { return this._listdataheader.get(groupposition); } @override public int getgroupcount() { return this._listdataheader.size(); } @override public long getgroupid(int groupposition) { return groupposition; } @override public view getgroupview(int groupposition, boolean isexpanded, view convertview, viewgroup parent) { string headertitle = (string) getgroup(groupposition); if (convertview == null) { layoutinflater infalinflater = (layoutinflater) this._context .getsystemservice(context.layout_inflater_service); convertview = infalinflater.inflate(r.layout.drawable_list_group, null); } textview lbllistheader = (textview) convertview .findviewbyid(r.id.lbllistheader); lbllistheader.settypeface(null, typeface.bold); lbllistheader.settext(headertitle); return convertview; } @override public boolean hasstableids() { return false; } @override public boolean ischildselectable(int groupposition, int childposition) { return true; } } preferenceactivity.java
package com.fonduetech.cravy; import android.content.intent; import android.content.res.configuration; import android.graphics.bitmap; import android.graphics.bitmapfactory; import android.os.bundle; import android.support.design.widget.collapsingtoolbarlayout; import android.support.design.widget.coordinatorlayout; import android.support.v4.widget.drawerlayout; import android.support.v7.app.appcompatactivity; import android.support.v7.widget.toolbar; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.compoundbutton; import android.widget.expandablelistview; import android.widget.imageview; import android.widget.toast; import android.widget.togglebutton; import com.fonduetech.cravy.adapter.expandablelistadapter; import java.util.arraylist; import java.util.hashmap; import java.util.list; import android.widget.expandablelistview.onchildclicklistener; import android.widget.expandablelistview.ongroupcollapselistener; import android.widget.expandablelistview.ongroupexpandlistener; public class preferenceactivity extends appcompatactivity { expandablelistadapter listadapter; expandablelistview explistview; list<string> listdataheader; hashmap<string, list<string>> listdatachild; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_preference); util.overridefonts(preferenceactivity.this, findviewbyid(r.id.drawerlayout)); // listview explistview = (expandablelistview) findviewbyid(r.id.lvexp); // preparing list data preparelistdata(); listadapter = new expandablelistadapter(this, listdataheader, listdatachild); // setting list adapter explistview.setadapter(listadapter); explistview.setonchildclicklistener(new onchildclicklistener() { @override public boolean onchildclick(expandablelistview parent, view v, int groupposition, int childposition, long id) { toast.maketext( getapplicationcontext(), listdataheader.get(groupposition) + " : " + listdatachild.get( listdataheader.get(groupposition)).get( childposition), toast.length_short) .show(); return false; } }); // listview group expanded listener ongroupexpandlistener explistview.setongroupexpandlistener(new ongroupexpandlistener() { @override public void ongroupexpand(int groupposition) { toast.maketext(getapplicationcontext(), listdataheader.get(groupposition) + " expanded", toast.length_short).show(); } }); // listview group collasped listener explistview.setongroupcollapselistener(new ongroupcollapselistener() { @override public void ongroupcollapse(int groupposition) { toast.maketext(getapplicationcontext(), listdataheader.get(groupposition) + " collapsed", toast.length_short).show(); } }); // listview on child click listener explistview.setonchildclicklistener(new onchildclicklistener() { @override public boolean onchildclick(expandablelistview parent, view v, int groupposition, int childposition, long id) { // todo auto-generated method stub toast.maketext( getapplicationcontext(), listdataheader.get(groupposition) + " : " + listdatachild.get( listdataheader.get(groupposition)).get( childposition), toast.length_short) .show(); return false; } }); } private void preparelistdata() { listdataheader = new arraylist<string>(); listdatachild = new hashmap<string, list<string>>(); // adding child data listdataheader.add("cuisines"); // adding child data list<string> cuisinelist = new arraylist<string>(); cuisinelist.add("american"); cuisinelist.add("oriental"); cuisinelist.add("chinese"); cuisinelist.add("continental"); cuisinelist.add("french"); cuisinelist.add("italian"); cuisinelist.add("middle eastern"); cuisinelist.add("mediterranean"); cuisinelist.add("mexican"); cuisinelist.add("thai"); cuisinelist.add("indian"); listdatachild.put(listdataheader.get(0), cuisinelist); // header, child data } } edit: have found problem , solution well. chekc out answers section cheers!
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