android - How to SELECT ALL in checkbox -
i have listview , checkbox, how can select checkbox given in listview, below getview() code. there property accomplish task? kindly send suggestions on current code. thanks.
code :
public class mainactivity extends activity { mycustomadapter dataadapter = null; private arraylist<checkbox> checkboxes = new arraylist<>(); private string[] application = { "aa", "bb", "cc"}; // dynamic application names private string[] device = { "ee", "ff", "gg"}; // dynamic // device // names private radiogroup radiogroup1; private radiogroup radiogroup2; private radiobutton btn; private radiobutton btn2; private string text1; private string text2; radiobutton button1; radiobutton button2; button selectall; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); // generate list view arraylist displaylistview(); checkbuttonclick(); radiogroup1 = (radiogroup) findviewbyid(r.id.radio1); radiogroup2 = (radiogroup) findviewbyid(r.id.radio1); viewgroup hourbuttonlayout = (viewgroup) findviewbyid(r.id.radio1); // // // // id // of // // radiogroup // // defined (int = 0; < application.length; i++) { button1 = new radiobutton(this); button1.setid(i); button1.settext(application[i]); hourbuttonlayout.addview(button1); radiogroup1.setoncheckedchangelistener(new radiogroup.oncheckedchangelistener() { public void oncheckedchanged(radiogroup mradiogroup2, int checkedid2) { for(int i=0; i<mradiogroup2.getchildcount(); i++) { btn = (radiobutton) mradiogroup2.getchildat(i); int t=mradiogroup2.getid(); system.out.println(t); if(btn.getid() == checkedid2) { text1 = btn.gettext().tostring(); toast.maketext(getapplicationcontext(), "you selected : " + text1, toast.length_short).show(); return; } } } }); } viewgroup hourbuttonlayout2 = (viewgroup) findviewbyid(r.id.radio2); // // // // id // of // // radiogroup // // defined (int = 0; < device.length; i++) { button2 = new radiobutton(this); button2.setid(i); button2.settext(device[i]); hourbuttonlayout2.addview(button2); radiogroup2.setoncheckedchangelistener(new radiogroup.oncheckedchangelistener() { public void oncheckedchanged(radiogroup mradiogroup, int checkedid) { for(int i=0; i<mradiogroup.getchildcount(); i++) { btn2 = (radiobutton) mradiogroup.getchildat(i); int t=mradiogroup.getid(); system.out.println(t); if(btn2.getid() == checkedid) { text2 = btn2.gettext().tostring(); toast.maketext(getapplicationcontext(), "you selected : " + text2, toast.length_short).show(); return; } } } }); } } private void displaylistview() { // array list of countries arraylist<country> countrylist = new arraylist<country>(); country country = new country("", "al jazeera", false); countrylist.add(country); country = new country("", "aa", true); countrylist.add(country); country = new country("", "bb", false); countrylist.add(country); // create arrayadaptar string array dataadapter = new mycustomadapter(this, r.layout.country_info, countrylist); listview listview = (listview) findviewbyid(r.id.listview1); // assign adapter listview listview.setadapter(dataadapter); listview.setonitemclicklistener(new onitemclicklistener() { public void onitemclick(adapterview<?> parent, view view, int position, long id) { // when clicked, show toast textview text country country = (country) parent.getitematposition(position); toast.maketext(getapplicationcontext(), "clicked on row: " + country.getname(), toast.length_long).show(); } }); } private class mycustomadapter extends arrayadapter<country> { private arraylist<country> countrylist; public mycustomadapter(context context, int textviewresourceid, arraylist<country> countrylist) { super(context, textviewresourceid, countrylist); this.countrylist = new arraylist<country>(); this.countrylist.addall(countrylist); } private class viewholder { textview code; checkbox name; } @override public view getview(int position, view convertview, viewgroup parent) { viewholder holder = null; log.v("convertview", string.valueof(position)); if (convertview == null) { layoutinflater vi = (layoutinflater) getsystemservice(context.layout_inflater_service); convertview = vi.inflate(r.layout.country_info, null); holder = new viewholder(); holder.code = (textview) convertview.findviewbyid(r.id.code); holder.name = (checkbox) convertview .findviewbyid(r.id.checkbox1); convertview.settag(holder); checkboxes.add(holder.name); selectall = (button) findviewbyid(r.id.selectall); selectall.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { (int = 0; < checkboxes.size(); i++) { checkbox currentchecbox = checkboxes.get(i); currentchecbox.setchecked(true); } } }); holder.name.setonclicklistener(new view.onclicklistener() { public void onclick(view v) { checkbox cb = (checkbox) v; country country = (country) cb.gettag(); toast.maketext( getapplicationcontext(), "clicked on checkbox: " + cb.gettext() + " " + cb.ischecked(), toast.length_long).show(); country.setselected(cb.ischecked()); } }); } else { holder = (viewholder) convertview.gettag(); } country country = countrylist.get(position); holder.code.settext(""); holder.name.settext(country.getname()); holder.name.setchecked(country.isselected()); holder.name.settag(country); return convertview; } } private void checkbuttonclick() { button mybutton = (button) findviewbyid(r.id.findselected); mybutton.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { stringbuffer responsetext = new stringbuffer(); responsetext.append("the following selected : "); arraylist<country> countrylist = dataadapter.countrylist; (int = 0; < countrylist.size(); i++) { country country = countrylist.get(i); if (country.isselected()) { responsetext.append(", " + country.getname()); string response = responsetext.tostring(); } } // selected radiobuttons if(radiogroup1.getcheckedradiobuttonid()!=-1){ text1 = btn.gettext().tostring(); log.d("button", "text 1 : " + text1); } if(radiogroup2.getcheckedradiobuttonid()!=-1){ text2 = btn2.gettext().tostring(); log.d("button", "text 2 : " + text2); } toast.maketext(getapplicationcontext(), "show names : " + responsetext + "and application : " + text1 + "and device : " + text2, toast.length_long).show(); } }); } }
you create array list holds checkboxes when want them selected loop through array , setchecked(true) on each one. example
declare arraylist @ top of adapter
private arraylist<checkbox> checkboxes = new arrraylist<>(); then in getview add checkbox array. make sure add after have instantiated it.
checkboxes.add(holder.name); then in onclick
(int = 0; < checkboxes.size(); i++) { checkbox currentchecbox = checkboxes.get(i); currentchecbox.setchecked(true); }
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