android帶勾選項的列表

一.列表中每項的佈局文件

<?xml version= "1.0" encoding ="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width= "match_parent"

android:layout_height= "match_parent"

android:orientation= "vertical" >

<TextView

android:id="@+id/catalog"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#E0E0E0"

android:layout_weight="1.0"

android:paddingLeft="5dip"

android:paddingTop="5dip"

android:paddingBottom="5dip"

android:textSize="13dp"

android:textColor="@color/index_font"

android:text="A"/>

<RelativeLayout

android:layout_width="match_parent"

android:layout_height="60dip"

android:background="@color/white"

<com.shjy.jingin.widget.HeaderView

android:id="@+id/select_staff_photo"

android:layout_width="46dip"

android:layout_height="46dip"

android:scaleType="centerCrop"

android:layout_centerVertical="true"

android:background="@drawable/head3x"

android:layout_marginLeft="10dip" />

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:orientation="vertical"

android:gravity="center_vertical"

android:layout_toRightOf="@+id/select_staff_photo"

android:layout_marginLeft="10dip" >

<TextView

android:id="@+id/select_staff_name"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginBottom="2dip"

android:textSize="16dp"

android:textColor="@color/main_font" />

<TextView

android:id="@+id/select_staff_dept_name"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="3dip"

android:textSize="13dp"

android:textColor="@color/main_font_color2" />

</LinearLayout>

<RelativeLayout

android:id="@+id/ry_phone_staff"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_alignParentRight="true"

android:layout_marginRight="15dip" >

<CheckBox

android:id="@+id/select_staff_checkbox"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_centerVertical="true"

android:layout_alignParentRight="true"

style= "@style/DeptCheckboxTheme"

android:layout_marginRight="18dp"

</RelativeLayout>

</RelativeLayout >

<View

android:layout_width="match_parent"

android:layout_height="1dip"

android:background="#d1d1d1" />

</LinearLayout>

對複選框修飾的樣式文件 @style/DeptCheckboxTheme

style.xml 中加入

<item name= "android:button">@drawable/dept_checkbox_style </item>

</style >

資源文件dept_checkbox_style.xml

<?xml version= "1.0" encoding ="utf-8"?>

</selector>

二.適配器編寫

1.在適配器中用一個map變量存儲選擇的值

2.在複選框組件上註冊OnCheckedChangeListener事件在該事件中將選擇的值保存到map中

package com.shjy.jingin.model;

import java.util.HashMap;

import java.util.List;

import com.baidu.location.b.m;

import com.shidian.SDK.imageloader.core.DisplayImageOptions;

import com.shidian.SDK.imageloader.core.ImageLoader;

import com.shidian.SDK.imageloader.core.display.RoundedBitmapDisplayer2;

import com.shjy.jingin.R;

import com.shjy.jingin.activity.EditWorkDiaryActivity.SelectContext ;

import com.shjy.jingin.bean.SortModel;

import com.shjy.jingin.bean.Staff;

import com.shjy.jingin.context.JYBoxApplication;

import com.shjy.jingin.tools.Utils;

import com.shjy.jingin.util.RandomColor;

import com.shjy.jingin.widget.HeaderView;

import android.content.Context;

import android.graphics.Bitmap;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.SectionIndexer;

import android.widget.TextView;

import android.widget.CompoundButton.OnCheckedChangeListener;

public class SelectStaffAdapter extends BaseAdapter implements SectionIndexer{

private List<SortModel> list = null;

private Context mContext ;

//由於存儲選擇的數據

private static HashMap<Long, Boolean> isSelected = null;

private ImageLoader loader ;

private DisplayImageOptions options ;

private JYBoxApplication jyBoxApplication ;

public SelectStaffAdapter(Context mContext, List<SortModel> list) {

this.mContext = mContext;

this.list = list;

isSelected = new HashMap<Long, Boolean>();

jyBoxApplication = JYBoxApplication.getInstance();

loader = ImageLoader. getInstance();// 圖片的異步加載器

// 創建默認的顯示的圖片

options = new DisplayImageOptions.Builder()

.showImageForEmptyUri(R.drawable. head3x)

.showImageOnFail(R.drawable. head3x)// 設置圖標加載或者解析錯誤時候的照片

.cacheInMemory( true).cacheOnDisc(true)// 設置下載的圖片放在緩存中

.displayer( new RoundedBitmapDisplayer2(0)).build();// 設置圖片圓角

}

public void updateListView(List<SortModel> list){

this.list = list;

notifyDataSetChanged();

}

public int getCount() {

return this .list .size();

}

public Object getItem(int position) {

return list .get(position);

}

public long getItemId(int position) {

return position;

}

public static HashMap<Long, Boolean> getIsSelected() {

return isSelected ;

}

public static void setIsSelected(HashMap<Long, Boolean> isSelected) {

SelectStaffAdapter. isSelected = isSelected;

}

public View getView(final int position, View view, ViewGroup arg2) {

ViewHolder viewHolder = null;

SortModel mContent = this.list .get(position);

final Staff staff = this.list.get(position).getStaff();

if (view == null) {

viewHolder = new ViewHolder();

view = LayoutInflater.from(mContext).inflate(R.layout. item_select_staff_list, null );

viewHolder. headerView = (HeaderView)view.findViewById(R.id.select_staff_photo );

// viewHolder.nameTextView = (TextView) view.findViewById(R.id.select_staff_name);

viewHolder. deptNameTextView = (TextView) view.findViewById(R.id.select_staff_dept_name );

viewHolder. tvLetter = (TextView) view.findViewById(R.id.catalog );

viewHolder. checkBox = (CheckBox)view.findViewById(R.id.select_staff_checkbox );

view.setTag(viewHolder);

} else {

viewHolder = (ViewHolder) view.getTag();

}

//將選擇的值記錄在 isSelected

final CheckBox checkBox = viewHolder.checkBox ;

checkBox.setOnCheckedChangeListener( new OnCheckedChangeListener() {

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

isSelected.put(staff.getId(), isChecked);

}

});

Boolean checked = isSelected.get(staff.getId());

viewHolder. checkBox.setChecked(checked== null?false :checked);

int section = getSectionForPosition(position);

if(position == getPositionForSection(section)){

viewHolder. tvLetter.setVisibility(View. VISIBLE);

viewHolder. tvLetter.setText(mContent.getSortLetters());

} else{

viewHolder. tvLetter.setVisibility(View. GONE);

}

String serviceAddress = jyBoxApplication.getServiceAddress();

String path = "http://" + serviceAddress + "/" + staff.getPath();

loader.clearDiscCache();

loader.clearMemoryCache();

loader.displayImage(path, viewHolder. headerView, options );

// viewHolder.nameTextView.setText(staff.getName());

viewHolder. deptNameTextView.setText(staff.getDeptName());

return view;

}

public static class ViewHolder {

public HeaderView headerView ;

public TextView photoText ;

// public TextView nameTextView;

public TextView deptNameTextView ;

public TextView tvLetter ;

public CheckBox checkBox ;

}

public int getSectionForPosition(int position) {

return list .get(position).getSortLetters().charAt(0);

}

public int getPositionForSection(int section) {

for (int i = 0; i < getCount(); i++) {

String sortStr = list.get(i).getSortLetters();

char firstChar = sortStr.toUpperCase().charAt(0);

if (firstChar == section) {

return i;

}

return -1;

}

private String getAlpha(String str) {

String sortStr = str.trim().substring(0, 1). toUpperCase();

if (sortStr.matches("[A-Z]" )) {

return sortStr;

} else {

return "#" ;

}

@Override

public Object[] getSections() {

return null ;

}

三.將數據庫中選擇的數據進行回顯

selectStaffAdapter = new SelectStaffAdapter(this, sortModels);

if(SelectContext.selectStaffs!=null&&SelectContext. selectStaffs.size()>0){

HashMap<Long, Boolean> selectMap = new HashMap<Long, Boolean>();

for(Staff staff:SelectContext.selectStaffs){

selectMap.put(staff.getId(), true);

}

selectStaffAdapter.setIsSelected(selectMap);

}

在數據適配器getView中

Boolean checked = isSelected .get(staff.getId());

viewHolder. checkBox.setChecked( checked==null? false:checked);

----
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