CheckBox列表的使用实例

最新推荐文章于 2021-09-08 15:37:01 发布

iteye_13411

最新推荐文章于 2021-09-08 15:37:01 发布

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文章标签：移动开发

本文介绍如何在Android应用中使用ListView组件实现多选功能，包括设置ListView的多选模式、创建自定义适配器以及处理单个条目的选择状态变化。

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importjava.util.ArrayList;

importandroid.app.Activity;
importandroid.content.Context;
importandroid.os.Bundle;
importandroid.util.AttributeSet;
importandroid.util.Log;
importandroid.view.LayoutInflater;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.view.View.OnClickListener;
importandroid.widget.ArrayAdapter;
importandroid.widget.CheckBox;
importandroid.widget.Checkable;
importandroid.widget.ImageView;
importandroid.widget.LinearLayout;
importandroid.widget.ListView;
importandroid.widget.TextView;

importcom.sec.android.touchwiz.samples.R;

publicclassListLayoutSample3XmlextendsActivity{

ListViewmListView;
privatefinalStringLOG_TAG_LISTLAYOUTSAMPLE3="ListLayoutSample3Xml";

/**Calledwhentheactivityisfirstcreated.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.listlayoutsample3xml_main);

mListView=(ListView)findViewById(R.id.contactCheckList);
//[09.10.23]ListView?choiceMode?CHOICE_MODE_MULTIPLE?????
//???item?check??????
//[E]SetListView'schoiceModetoCHOICE_MODE_MULTIPLEformulticheck.
mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

ArrayList<ContactItem>list=newArrayList<ContactItem>();

for(inti=0;i<mName.length;i++){
ContactItemcontact=newContactItem(mThumbs,mName); list.add(contact); } //ContactAdapter?? ContactAdaptercAdapter=newContactAdapter(this,R.layout.listlayoutsample3xml_row,list); //ListView?ContactAdapter??? mListView.setAdapter(cAdapter); } /* *ContactItem????Thumbnaildata */ privateInteger[]mThumbs={ R.drawable.listlayoutsample3xml_1, R.drawable.listlayoutsample3xml_2, R.drawable.listlayoutsample3xml_3, R.drawable.listlayoutsample3xml_4, R.drawable.listlayoutsample3xml_5, R.drawable.listlayoutsample3xml_seankingston, R.drawable.listlayoutsample3xml_karina, R.drawable.listlayoutsample3xml_jayz, R.drawable.listlayoutsample3xml_madonna}; /* *ContactItem????FullNamedata */ privateString[]mName= { "AnnaBay", "AgathaChristina", "AgnesGreen", "Mom", "July", "SeanKingston", "Karina", "Jay-Z", "Madonna" }; /* *ListView?????Adapter.ArrayAdapter???????. *ContactItemtype?data??ArrayList????. */ privateclassContactAdapterextendsArrayAdapter<ContactItem>{ privateArrayList<ContactItem>items; publicContactAdapter(Contextcontext,inttextViewResourceId,ArrayList<ContactItem>items){ super(context,textViewResourceId,items); this.items=items; } @Override publicViewgetView(intposition,ViewconvertView,ViewGroupparent){ Viewv=convertView; if(v==null){ LayoutInflatervi=(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); v=vi.inflate(R.layout.listlayoutsample3xml_row,null); } ContactItemti=items.get(position); if(ti!=null){ ImageViewthumbview=(ImageView)v.findViewById(R.id.photo1); TextViewnameview=(TextView)v.findViewById(R.id.text1); finalCheckBoxcheck=(CheckBox)v.findViewById(R.id.checkbox1); if(thumbview!=null){ thumbview.setImageResource(ti.getContactThumb()); } if(nameview!=null){ nameview.setText(ti.getFullName()); } if(check!=null){ finalintmyPosition=position; check.setOnClickListener(newOnClickListener(){ publicvoidonClick(Viewv){ check.post(newRunnable(){ publicvoidrun(){ booleanfchecked=check.isChecked(); onBtnCheckChanged(myPosition,fchecked); } }); } }); } } returnv; } } privatevoidonBtnCheckChanged(intposition,booleancheck){ Log.d(LOG_TAG_LISTLAYOUTSAMPLE3,"onBtnCheckChanged("+position+","+check+")"); mListView.setItemChecked(position,check); } /** *@authorcooldawn.kim * *ContactItem */ classContactItem{ privateIntegermContactThumb; privateStringmFullName; publicContactItem(Integerthumb,StringfullName) { this.mContactThumb=thumb; this.mFullName=fullName; } publicIntegergetContactThumb(){ returnmContactThumb; } publicStringgetFullName(){ returnmFullName; } }//classContactItem publicstaticclassItemViewextendsLinearLayoutimplementsCheckable{ publicItemView(Contextcontext,AttributeSetattrs){ super(context,attrs); } publicbooleanisChecked(){ CheckBoxcheck=findCheckBox(); if(check!=null){ returncheck.isChecked(); } returnfalse; } publicvoidsetChecked(booleanchecked){ Log.d("ItemView","setChecked("+checked+")"); CheckBoxcheck=findCheckBox(); if(check!=null){ check.setChecked(checked); } } publicvoidtoggle(){ CheckBoxcheck=findCheckBox(); if(check!=null){ check.toggle(); } } privateCheckBoxfindCheckBox(){ Viewcheck=findViewById(R.id.checkbox1); if(check!=null&&checkinstanceofCheckBox){ return(CheckBox)check; } returnnull; } } }