Android 实现单选列表

在网上找了很多资料都不全，所以自己写了个。

废话就不多说了。

效果图

Android 实现单选列表_第1张图片

Main.java部分代码：

package com.jli.main;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class Main extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);Button btn = (Button)findViewById(R.id.test);btn.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {User u = new User();u.setId("111");u.setName("3213");u.setPwd("fdsaf");u.setMoney(500.0);Intent it = new Intent(Main.this,SingleSelectionList.class);Bundle bundle = new Bundle();bundle.putString("id", u.getId());bundle.putString("name", u.getName());bundle.putDouble("money", u.getMoney());it.putExtras(bundle);it.putExtras(bundle);startActivityForResult(it,0);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if(Activity.RESULT_OK == resultCode){User user = upDateUIForUserInfo(data.getExtras()); Toast.makeText(this, "你选择的是:/n"+"id:"+user.getId()+"/n"+"name:"+user.getName(), Toast.LENGTH_LONG).show();}else{ Toast.makeText(this, "你取消了选择/n", Toast.LENGTH_LONG).show();}}private User upDateUIForUserInfo(Bundle bundle){User user = new User();user.setId(bundle.getString("id"));user.setName(bundle.getString("name"));return user;}}

转至:http://blog.csdn.net/IT_Farmer2010/archive/2011/04/22/6342009.aspx

SingleSelectionList.java:

package com.jli.main;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Handler;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import android.widget.AdapterView.OnItemClickListener;/** * User: 李杰 * Date: 2011-3-29 * Time: 下午02:43:46 */public class SingleSelectionList extends Activity implements View.OnClickListener, OnItemClickListener {private ImageButton mChancleImgBtn;private ImageButton mOkImgBtn;private ListView mFriendsListView;private List<User> mFriendsList = new ArrayList<User>();private User mUser;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.single_selection_list);mOkImgBtn = (ImageButton)findViewById(R.id.btnYes);mOkImgBtn.setOnClickListener(this);mChancleImgBtn = (ImageButton)findViewById(R.id.btnNo);mChancleImgBtn.setOnClickListener(this);buildData();mFriendsListView = (ListView)findViewById(android.R.id.list);mFriendsListView.setAdapter(new EfficientAdapter(this));mFriendsListView.setOnItemClickListener(this);}@Overrideprotected void onRestart() {if(mFriendsList.size() != 0)buildData();mFriendsListView.setAdapter(new EfficientAdapter(this));super.onRestart();};@Overrideprotected void onDestroy() {super.onDestroy();}@Overridepublic void onClick(View v) {Intent it = this.getIntent();if(v.getId() == R.id.btnYes && mUser != null){Intent intent = this.getIntent();Bundle bundle = intent.getExtras();bundle.putString("id", mUser.getId());bundle.putString("name", mUser.getName());it.putExtras(bundle);SingleSelectionList.this.setResult(Activity.RESULT_OK, it);}else{SingleSelectionList.this.setResult(Activity.RESULT_CANCELED, it);}SingleSelectionList.this.finish();}@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position, long id) {/**update list UI when item on click*/class UpDateListStaus implements Runnable{private View mView;private EfficientAdapter mAdapt;public UpDateListStaus(View view, EfficientAdapter adapt){this.mAdapt = adapt;this.mView = view;}public void run(){//update previous on selected item statusif(mAdapt.getSelectHolder() != null){mAdapt.getSelectHolder().imgView.setImageBitmap(BitmapFactory.decodeResource(mView.getResources(), R.drawable.rdbtn_2));}//update current on selected item statusViewHolder tmp = new ViewHolder();tmp.imgView = (ImageView)mView.findViewById(R.id.onSelectSign);upDateItemUi(tmp.imgView, true);//reset current on selected holdermAdapt.setSelectHolder(tmp);}}//update current on selected user mUser = mFriendsList.get(position);EfficientAdapter adapt = (EfficientAdapter)parent.getAdapter();//update current on selected item's positionadapt.setCurSelectPosition(position);new Handler().post(new UpDateListStaus(view,adapt));}/**if list no data so ui show "you no friends"*/protected void showUiForNoData(){if(mFriendsList.size() == 0)((TextView)findViewById(android.R.id.empty)).setText(getString(R.string.noFriends));else((TextView)findViewById(android.R.id.empty)).setText("");}/**update item's status*/private void upDateItemUi(ImageView imgView, boolean b){if(b){imgView.setImageBitmap(BitmapFactory.decodeResource(imgView.getResources(), R.drawable.rdbtn_1));}else{imgView.setImageBitmap(BitmapFactory.decodeResource(imgView.getResources(), R.drawable.rdbtn_2));}}private class EfficientAdapter extends BaseAdapter {private LayoutInflater mInflater;private ViewHolder mHolder;/**on selected item*/private ViewHolder mSelectHolder;/**on selected item posion*/private int mCurSelectPosition = -1;public EfficientAdapter(Context context) {mInflater = LayoutInflater.from(context);}public void setCurSelectPosition(int mCurSelectPosition) {this.mCurSelectPosition = mCurSelectPosition;}public ViewHolder getSelectHolder() {return mSelectHolder;}public void setSelectHolder(ViewHolder selectHolder) {this.mSelectHolder = selectHolder;}@Overridepublic int getCount() {return mFriendsList.size();}@Overridepublic Object getItem(int position) {return position;}@Overridepublic long getItemId(int position) {return position;}@Overridepublic void notifyDataSetChanged() {};@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (convertView == null) {convertView = mInflater.inflate(R.layout.list_item, null);mHolder = new ViewHolder();mHolder.id = (TextView) convertView.findViewById(R.id.userId);mHolder.icon = (ImageView) convertView.findViewById(R.id.userShot);mHolder.name = (TextView) convertView.findViewById(R.id.name);mHolder.imgView = (ImageView) convertView.findViewById(R.id.onSelectSign);convertView.setTag(mHolder);} else {mHolder = (ViewHolder) convertView.getTag();}//update ui by current item on select or noif(position == mCurSelectPosition){upDateItemUi(mHolder.imgView,true);}else{upDateItemUi(mHolder.imgView,false);}User u = mFriendsList.get(position);mHolder.id.setText(u.getId());mHolder.name.setText(u.getName());mHolder.icon.setImageBitmap(u.getShot());return convertView;}}private class ViewHolder {/** User id*/TextView id;/**User shot*/ImageView icon;/**User name*/TextView name;/**sgin current user on selected or no*/ImageView imgView;}private void buildData(){for(int i=0;i<50;i++){User u = new User();u.setId("id"+i);u.setName("name"+i);u.setShot(BitmapFactory.decodeResource(this.getResources(), R.drawable.user_shot));mFriendsList.add(u);}}}

single_selection_list.xml：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:background="@drawable/background"android:layout_height="match_parent" android:layout_width="match_parent"><ListView android:id="@id/android:list" android:background="@color/transparent"android:divider="@drawable/item_divider"android:listSelector="#00000000" android:layout_width="700px"android:layout_height="200px" android:drawSelectorOnTop="true"android:cacheColorHint="@color/transparent" android:layout_marginTop="120px"android:layout_marginLeft="40px" /><TextView android:id="@id/android:empty" android:layout_width="match_parent"android:layout_height="match_parent"android:gravity="center"android:textSize="21sp"/><LinearLayoutandroid:orientation="horizontal"android:layout_height="wrap_content"android:layout_width="wrap_content"android:layout_marginTop="320px"android:gravity="center_horizontal"><ImageButton android:id="@+id/btnYes"android:background="@drawable/btn_ok" android:layout_width="wrap_content"android:layout_height="wrap_content" android:layout_marginLeft="200px" /><ImageButton android:id="@+id/btnNo"android:background="@drawable/btn_chancel" android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="100px" /></LinearLayout></RelativeLayout>

转至:http://blog.csdn.net/IT_Farmer2010/archive/2011/04/22/6342009.aspx

list_item.xml：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"android:layout_height="wrap_content" android:background="@color/transparent"><ImageViewandroid:id="@+id/onSelectSign"android:src="@drawable/rdbtn_2"android:layout_width="wrap_content" android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_marginLeft="40px"android:focusable="false"/><ImageView android:id="@+id/userShot"android:src="@drawable/user_shot" android:scaleType="centerCrop"android:layout_width="45px" android:layout_height="45px"android:layout_centerVertical="true"android:layout_marginLeft="80px" /><TextView android:id="@+id/name"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="@color/solidback" android:layout_marginLeft="160px"android:layout_centerVertical="true"android:textSize="20sp" /><TextView android:id="@+id/userId"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="@color/solidback" android:textSize="20sp"android:layout_centerVertical="true"android:layout_marginLeft="600px" /></RelativeLayout>

转至:http://blog.csdn.net/IT_Farmer2010/archive/2011/04/22/6342009.aspx

麻烦看帖的朋友还是扔个砖头...

这里只是部分代码，源码下载地址http://download.csdn.net/source/3216279

下载有点贵，没办法自己心血，如果实在没有分请联系我:[email protected] 可以发你一份。

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