Android Anti-Select, select All, delete

Mainactivity.class

@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main);        Findcomp ();        InitData (); adapter =NewMyadapter ( This, list); Lv.setadapter (adapter);//Select allAll.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v) {//TODO auto-generated method stub                 for(intI=0; I<list.size (); i++) {List.get (i). Setisstate (true);            } adapter.notifydatasetchanged (); }        });//Delete, select the button listDel.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v) {//TODO auto-generated method stub                //Iterate through the collection, or delete it if it is selected                 for(intI=0; I<list.size (); i++) {if(List.get (i). Isisstate ()) {//delete data from the collectionList.remove (i);/* * The data in the collection is moved up one bit in the list, so the position in the collection, * and the entry IDs in the list no longer match, so subtract 1 */i=i-1;            }} adapter.notifydatasetchanged (); }        });//Reverse selectionFan.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v) {//TODO auto-generated method stub                 for(intI=0; I<list.size (); i++) {//Get the button for the check box in the collection                        BooleanIsstate=list.get (i). Isisstate ();//Put the status of the check box in the set, take the non, change the current stateList.get (i). Setisstate (!isstate); }//Refresh, ListAdapter.notifydatasetchanged ();    }        }); }//Add collection    Private void InitData() {list =NewArraylist<info> (); List.add (NewInfo ("Li bin")); List.add (NewInfo ("Li bin first machine")); List.add (NewInfo ("Li bin three standby")); List.add (NewInfo ("Li bin four-generation machine")); }

Myadapter.class

 Public  class myadapter extends baseadapter {     PublicContext context; PublicArraylist<info> list;PrivateViewhodler VH; Public Myadapter(Context context, arraylist<info> list) {Super(); This. Context = Context; This. list = list; }@Override     Public int GetCount() {//TODO auto-generated method stub        returnList.size (); }@Override     PublicObjectGetItem(intARG0) {//TODO auto-generated method stub        return NULL; }@Override     Public Long Getitemid(intARG0) {//TODO auto-generated method stub        return 0; }@Override     PublicViewGetView(Final intarg0, View Contrain, ViewGroup arg2) {//TODO auto-generated method stub        //Optimization        if(contrain==NULL) {contrain=view.inflate (context, R.layout.item,NULL); VH =NewViewhodler ();            Vh.title= (TextView) Contrain.findviewbyid (r.id.t_title);            vh.ck= (CheckBox) Contrain.findviewbyid (R.ID.C_CK);        Contrain.settag (VH); }Else{vh= (Viewhodler) Contrain.gettag ();        } vh.title.setText (List.get (arg0). GetTitle ()); Vh.ck.setChecked (List.get (arg0). Isisstate ());when the entry changes state, the changed state is stored in the set .Vh.ck.setOnCheckedChangeListener (NewOncheckedchangelistener () {@Override             Public void oncheckedchanged(Compoundbutton Buttonview,BooleanisChecked) {//TODO auto-generated method stubList.get (arg0). Setisstate (isChecked); }               });returnContrain; } Public  class viewhodler{        PrivateTextView title;PrivateCheckBox ck; }}

Android Anti-Select, select All, delete