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



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 {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.main);
Button btn = (Button)findViewById(R.id.test);
btn.setOnClickListener(new View.OnClickListener() {

@Override
public 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);
}});
}

@Override
protected 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;

@Override
protected 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);

}

@Override
protected void onRestart() {
if(mFriendsList.size() != 0)
buildData();
mFriendsListView.setAdapter(new EfficientAdapter(this));
super.onRestart();
};

@Override
protected void onDestroy() {
super.onDestroy();
}
@Override
public 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();

}
@Override
public 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 status
if(mAdapt.getSelectHolder() != null){

mAdapt.getSelectHolder().imgView.setImageBitmap(BitmapFactory.decodeResource(mView.getResources(), R.drawable.rdbtn_2));
}

//update current on selected item status
ViewHolder tmp = new ViewHolder();
tmp.imgView = (ImageView)mView.findViewById(R.id.onSelectSign);
upDateItemUi(tmp.imgView, true);
//reset current on selected holder
mAdapt.setSelectHolder(tmp);
}
}

//update current on selected user
mUser = mFriendsList.get(position);
EfficientAdapter adapt = (EfficientAdapter)parent.getAdapter();
//update current on selected item's position
adapt.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;
}
@Override
public int getCount() {
return mFriendsList.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}

@Override
public void notifyDataSetChanged() {

};

@Override
public 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 no
if(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">
<!--android:layout_marginTop="120px" android:layout_marginLeft="40px"
@drawable/stact_py_background android:listSelector 获取到焦点行背景色
android:drawSelectorOnTop="true"
点击某一条记录，颜色会显示在最上面，记录上的文字被遮住，所以点击文字不放，文字就看不到
android:drawSelectorOnTop="false"
点击某条记录不放，颜色会在记录的后面，成为背景色，但是记录内容的文字是可见的 android:divider 列表分割线颜色
-->
<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"/>

<LinearLayout
android: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">

<ImageView
android: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:lijie214@foxmail.com 可以发你一份。