package?com.example.listviewselectmode;?

import?android.R.integer;?

import?android.os.Bundle;?

import?android.app.ListActivity;?

import?android.app.ListActivity;?

import?android.view.ActionMode;?

import?android.view.Menu;?

import?android.view.MenuItem;?

import?android.widget.AbsListView.MultiChoiceModeListener;?

import?android.widget.ArrayAdapter;?

import?android.widget.ListView;?

import?android.widget.Toast;?

?

public?class?MainActivity?extends?ListActivity?{?

?????

????String[]?itemsStrings={"a","b","c","d","e"};?

?

????@Override?

????protected?void?onCreate(Bundle?savedInstanceState)?{?

?????????

????????super.onCreate(savedInstanceState);?

????????ListView?listView=getListView();?

????????//注意此處沒有setContentView那一項?

????????listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);?

????????listView.setMultiChoiceModeListener(new?ModeChoice());?

????????//注意該adapter的第二個參數為android.R.layout.simple_list_item_checked?

????????ArrayAdapter<String>?adapter=new?ArrayAdapter<String>(getApplicationContext(),?android.R.layout.simple_list_item_checked,?itemsStrings);?

????????setListAdapter(adapter);?

????}?

?????

????@Override?

????protected?void?onPostCreate(Bundle?savedInstanceState)?{?

????????//?TODO?Auto-generated?method?stub?

?????????

????????getActionBar().setTitle("long?press?to?select");?

????????super.onPostCreate(savedInstanceState);?

?????????

????}?

?

????class?ModeChoice?implements?MultiChoiceModeListener{?

?

????????@Override?

????????public?boolean?onActionItemClicked(ActionMode?mode,?MenuItem?item)?{?

????????????//?TODO?Auto-generated?method?stub?

????????????int?count=getListView().getCheckedItemCount();?

????????????switch?(item.getItemId())?{?

????????????case?R.id.share:?

????????????????Toast.makeText(getApplicationContext(),?"you?share?"+count+"項",?1000).show();?

????????????????break;?

????????????default:?

??????????????????Toast.makeText(MainActivity.this,?"Clicked?"?+?item.getTitle(),?

????????????????????????????Toast.LENGTH_SHORT).show();?

????????????????break;?

????????????}?

?????????????

????????????return?true;?

????????}?

?

????????private?void?setSubtitle(ActionMode?mode)?{?

????????????//?TODO?Auto-generated?method?stub?

????????????int?count=getListView().getCheckedItemCount();?

????????????switch?(count)?{?

????????????case?0:?

????????????????mode.setSubtitle("");?

????????????????break;?

????????????case?1:?

????????????????mode.setSubtitle("you?select?one?item");?

????????????????break;?

????????????default:?

????????????????mode.setSubtitle("you?select"+count+"items");?

????????????????break;?

????????????}?

????????}?

?

????????@Override?

????????public?boolean?onCreateActionMode(ActionMode?mode,?Menu?menu)?{?

????????????//?TODO?Auto-generated?method?stub?

????????????getMenuInflater().inflate(R.menu.main,?menu);?

????????????mode.setSubtitle("select?item");?

????????????setSubtitle(mode);?

????????????//此處需注意需要返回true?

????????????return?true;?

????????}?

?

????????@Override?

????????public?void?onDestroyActionMode(ActionMode?mode)?{?

????????????//?TODO?Auto-generated?method?stub?

?????????????

????????}?

?

????????@Override?

????????public?boolean?onPrepareActionMode(ActionMode?mode,?Menu?menu)?{?

????????????//?TODO?Auto-generated?method?stub?

?????????????

????????????return?false;?

????????}?

?

????????@Override?

????????public?void?onItemCheckedStateChanged(ActionMode?mode,?int?position,?

????????????????long?id,?boolean?checked)?{?

????????????//?TODO?Auto-generated?method?stub?

????????????setSubtitle(mode);?

????????}?

?????????

?????????

????}?

?

}