android 仿微信demo————微信启动界面实现
android 仿微信demo————注册功能实现(移动端)
android 仿微信demo————注册功能实现(服务端)
android 仿微信demo————登录功能实现(移动端)
android 仿微信demo————登录功能实现(服务端)
android 仿微信demo————微信主界面实现
android 仿微信demo————微信消息界面实现(移动端)
android 仿微信demo————微信消息界面实现(服务端)
android 仿微信demo————微信通讯录界面功能实现(移动端,服务端)
android 仿微信demo————微信发现界面实现
android 仿微信demo————微信顶部操作栏界面实现
android 仿微信demo————微信顶部操作栏搜索按钮实现(查询通讯录好友功能)
android 仿微信demo————微信顶部操作栏加号按钮实现(弹出子菜单)
前面我们实现了微信消息界面的实现,这篇继续完善微信功能,实现微信通讯录界面
微信通讯录,头部是四个标签(不进行分组),下面是好友信息且根据呢称首字母进行排序分组,底部还统计了好友个数,右边是一组英文字母导航,可滑动并且还可以点击跳转到相应的分组
微信好友和顶部的四个标签,可以用ListViw实现并指定一个item布局,分组效果只需要在代码段进行判断即可
右边的字母操作行可以自定义一个组件继承AppCompatTextView,为什么要用它呢,而不用TextView呢?因为UI设计限定了一个文本的宽度,但是文本的长度可能比较长,如果设定一个固定的textSize,就导致一部分文本无法显示,而AppCompatTextView最显著的特点是可以自适应字体宽度大小变化。这个特点很有用,可以让文本随着文本宽度的变化,限定在一个固定范围内完整显示出来:
修改微信通信录界面的fragment布局
contactlist_fragment.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.wxchatdemo.MainWeixin">
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="@drawable/main_list_divider_line"
android:dividerHeight="1.5px"
android:layout_marginBottom="50dp" />
<com.example.wxchatdemo.tools.SideBar
android:id="@+id/side_bar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_marginBottom="100dp"
android:layout_marginTop="100dp"
android:paddingRight="10dp"
android:textColor="@color/black"
android:textSize="9sp" />
RelativeLayout>
fragment整体布局使用相对布局,这样可以通过 android:layout_alignParentRight="true"属性指定右边的自定义字母导航(SideBar继承AppCompatTextView)在父容器右边(即在屏幕中间的右边),相对布局包括两个组件(ListView,SideBar)
创建自定义组件SideBar.java继承AppCompatTextView
SideBar.java
package com.example.wxchatdemo;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.MotionEvent;
public class SideBar extends android.support.v7.widget.AppCompatTextView {
private String[] letters = new String[]{
"A", "B", "C", "D", "E", "F",
"G", "H", "I", "J", "K", "L",
"M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
"W", "X", "Y", "Z", "#"};
private Paint textPaint;
private Paint bigTextPaint;
private Paint scaleTextPaint;
private Canvas canvas;
private int itemH;
private int w;
private int h;
/**
* 普通情况下字体大小
*/
float singleTextH;
/**
* 缩放离原始的宽度
*/
private float scaleWidth;
/**
* 滑动的Y
*/
private float eventY = 0;
/**
* 缩放的倍数
*/
private int scaleSize = 1;
/**
* 缩放个数item,即开口大小
*/
private int scaleItemCount = 6;
private ISideBarSelectCallBack callBack;
public SideBar(Context context) {
this(context, null);
}
public SideBar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SideBar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(attrs);
}
private void init(AttributeSet attrs) {
if (attrs != null) {
TypedArray ta = getContext().obtainStyledAttributes(attrs, R.styleable.SideBar);
scaleSize = ta.getInteger(R.styleable.SideBar_scaleSize, 1);
scaleItemCount = ta.getInteger(R.styleable.SideBar_scaleItemCount, 6);
scaleWidth = ta.getDimensionPixelSize(R.styleable.SideBar_scaleWidth, dp(100));
ta.recycle();
}
textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
textPaint.setColor(getCurrentTextColor());
textPaint.setTextSize(getTextSize());
textPaint.setTextAlign(Paint.Align.CENTER);
bigTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
bigTextPaint.setColor(getCurrentTextColor());
bigTextPaint.setTextSize(getTextSize() * (scaleSize + 3));
bigTextPaint.setTextAlign(Paint.Align.CENTER);
scaleTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
scaleTextPaint.setColor(getCurrentTextColor());
scaleTextPaint.setTextSize(getTextSize() * (scaleSize + 1));
scaleTextPaint.setTextAlign(Paint.Align.CENTER);
}
public void setDataResource(String[] data) {
letters = data;
invalidate();
}
public void setOnStrSelectCallBack(ISideBarSelectCallBack callBack) {
this.callBack = callBack;
}
/**
* 设置字体缩放比例 * * @param scale
*/
public void setScaleSize(int scale) {
scaleSize = scale;
invalidate();
}
/**
* 设置缩放字体的个数,即开口大小 * * @param scaleItemCount
*/
public void setScaleItemCount(int scaleItemCount) {
this.scaleItemCount = scaleItemCount;
invalidate();
}
private int dp(int px) {
final float scale = getContext().getResources().getDisplayMetrics().density;
return (int) (px * scale + 0.5f);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
if (event.getX() > (w - getPaddingRight() - singleTextH - 10)) {
eventY = event.getY();
invalidate();
return true;
} else {
eventY = 0;
invalidate();
break;
}
case MotionEvent.ACTION_CANCEL:
eventY = 0;
invalidate();
return true;
case MotionEvent.ACTION_UP:
if (event.getX() > (w - getPaddingRight() - singleTextH - 10)) {
eventY = 0;
invalidate();
return true;
} else
break;
}
return super.onTouchEvent(event);
}
@Override
protected void onDraw(Canvas canvas) {
this.canvas = canvas;
DrawView(eventY);
}
private void DrawView(float y) {
int currentSelectIndex = -1;
if (y != 0) {
for (int i = 0; i < letters.length; i++) {
float currentItemY = itemH * i;
float nextItemY = itemH * (i + 1);
if (y >= currentItemY && y < nextItemY) {
currentSelectIndex = i;
if (callBack != null) {
callBack.onSelectStr(currentSelectIndex, letters[i]);
} //画大的字母
Paint.FontMetrics fontMetrics = bigTextPaint.getFontMetrics();
float bigTextSize = fontMetrics.descent - fontMetrics.ascent;
canvas.drawText(letters[i], w - getPaddingRight() - scaleWidth - bigTextSize,
singleTextH + itemH * i, bigTextPaint);
}
}
}
drawLetters(y, currentSelectIndex);
}
private void drawLetters(float y, int index) {
//第一次进来没有缩放情况,默认画原图
if (index == -1) {
w = getMeasuredWidth();
h = getMeasuredHeight();
itemH = h / letters.length;
Paint.FontMetrics fontMetrics = textPaint.getFontMetrics();
singleTextH = fontMetrics.descent - fontMetrics.ascent;
for (int i = 0; i < letters.length; i++) {
canvas.drawText(letters[i], w - getPaddingRight(), singleTextH + itemH * i, textPaint);
} //触摸的时候画缩放图
} else {
//遍历所有字母
for (int i = 0; i < letters.length; i++) {
//要画的字母的起始Y坐标
float currentItemToDrawY = singleTextH + itemH * i;
float centerItemToDrawY;
if (index < i)
centerItemToDrawY = singleTextH + itemH * (index + scaleItemCount);
else
centerItemToDrawY = singleTextH + itemH * (index - scaleItemCount);
float delta = 1 - Math.abs((y - currentItemToDrawY) / (centerItemToDrawY - currentItemToDrawY));
float maxRightX = w - getPaddingRight(); //如果大于0,表明在y坐标上方
scaleTextPaint.setTextSize(getTextSize() + getTextSize() * delta);
float drawX = maxRightX - scaleWidth * delta; //超出边界直接花在边界上
if (drawX > maxRightX)
canvas.drawText(letters[i], maxRightX, singleTextH + itemH * i, textPaint);
else
canvas.drawText(letters[i], drawX, singleTextH + itemH * i, scaleTextPaint);
}
}
}
public interface ISideBarSelectCallBack {
void onSelectStr(int index, String selectStr);
}
}
右侧字母导航条,包括3个自定义的属性,下面将给出
在colors.xml文件添加如下代码
colors.xml
<declare-styleable name="SideBar">
<attr name="scaleSize" format="integer"/>
<attr name="scaleItemCount" format="integer"/>
<attr name="scaleWidth" format="dimension"/>
declare-styleable>
要在字母导航中点击每一个字母可跳转相应分组,需要借助汉字转拼音工具类和自定义字母排序类,我们知道,java中是没有提供接口和方法让我们直接将汉字转成拼音的。在此我选择了使用第三方jar包的方式,因为它体积不大而且更加准确。
创建汉字转拼音工具类Cn2Spell.java
Cn2Spell.java
package com.example.wxchatdemo.tools;
import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
/** * 汉字转换位汉语拼音,英文字符不变 */
public class Cn2Spell {
public static StringBuffer sb = new StringBuffer();
/** * 获取汉字字符串的首字母,英文字符不变 * 例如:阿飞→af */
public static String getPinYinHeadChar(String chines) {
sb.setLength(0);
char[] chars = chines.toCharArray();
HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
for (int i = 0; i < chars.length; i++) {
if (chars[i] > 128) {
try {
sb.append(PinyinHelper.toHanyuPinyinStringArray(chars[i], defaultFormat)[0].charAt(0)); }
catch (Exception e) {
e.printStackTrace(); }
}
else {
sb.append(chars[i]); }
}
return sb.toString(); }
/** * 获取汉字字符串的第一个字母 */
public static String getPinYinFirstLetter(String str) {
sb.setLength(0);
char c = str.charAt(0);
String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(c);
if (pinyinArray != null) {
sb.append(pinyinArray[0].charAt(0)); }
else {
sb.append(c);
}
return sb.toString();
}
/** * 获取汉字字符串的汉语拼音,英文字符不变 */
public static String getPinYin(String chines) {
sb.setLength(0);
char[] nameChar = chines.toCharArray();
HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
for (int i = 0; i < nameChar.length; i++) {
if (nameChar[i] > 128) {
try {
sb.append(PinyinHelper.toHanyuPinyinStringArray(nameChar[i], defaultFormat)[0]);}
catch (Exception e) {
e.printStackTrace(); }
}
else {
sb.append(nameChar[i]); }
}
return sb.toString();
}
}
上面用到第三方jar,下面将给出下载地址
第三方jar包下载地址:https://pan.baidu.com/s/1R27rd4PxASgFsjFjvDcu0Q(提取吗:vcjq)
把jar包导入项目libs库中,方法如下
在android studio中把项目结构改成project
此时目录就可以看到lib目录,把jar复制进去,然后添加到库中,方法和idea的是一样的,在以往文章中已经演示了
创建自定义字母排序类User.java
User.java
package com.example.wxchatdemo.tools;
public class User implements Comparable<User> {
private String name; // 姓名
private String pinyin; // 姓名对应的拼音
private String firstLetter; // 拼音的首字母
public User() {
}
public User(String name) {
this.name = name;
pinyin = Cn2Spell.getPinYin(name); // 根据姓名获取拼音
firstLetter = pinyin.substring(0, 1).toUpperCase(); // 获取拼音首字母并转成大写
if (!firstLetter.matches("[A-Z]")) {
// 如果不在A-Z中则默认为“#”
firstLetter = "#"; }
}
public String getName() {
return name;
}
public String getPinyin() {
return pinyin;
}
public String getFirstLetter() {
return firstLetter;
}
@Override
public int compareTo(com.example.wxchatdemo.tools.User another) {
if (firstLetter.equals("#") && !another.getFirstLetter().equals("#")) {
return 1;
}
else if (!firstLetter.equals("#") && another.getFirstLetter().equals("#")){
return -1;
} else {
return pinyin.compareToIgnoreCase(another.getPinyin());
}
}
}
选择实现comparable接口,并重写comparaTo方法,原理很简单,就是先根据首字母判断,首字母为“#”都放在最后,都为“#”或者都是字母时才根据拼音来比较排序,让你的好友可以根据拼音来排序
修改通讯录fragment.java代码
ContactListFragment.java
package com.example.wxchatdemo;
import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import com.example.wxchatdemo.adapter.SortAdapter;
import com.example.wxchatdemo.tools.User;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@SuppressLint("ValidFragment")
public class ContactListFragment extends Fragment {
String[] imgUrl;
String[] name;
private String number; //微信号,通过微信号去查找通讯录
/* 声明组件*/
private ListView listView;
private SideBar sideBar;
/*声明或创建集合,用于处理数据*/
private ArrayList<User> list;
private ArrayList<Integer> list2;
private List<Map<String, String>> data = new ArrayList<Map<String, String>>();
//自定义的一个Hander消息机制
private MyHander myhander = new MyHander();
/*有参构造方法,参数为微信号*/
@SuppressLint("ValidFragment")
ContactListFragment(String number) {
this.number = number;
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
/*开启一个线程,用微信号向服务器请求通讯录数据*/
Thread thread1 = new Thread(new Runnable() {
@Override
public void run() {
httpUrlConnPost(String.valueOf(number));
}
});
thread1.start();
/*等待线性处理完成*/
try {
thread1.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
//获取fragment布局
View view = inflater.inflate(R.layout.contactlist_fragment, container, false);
/*初始化组件*/
listView = (ListView) view.findViewById(R.id.listView);
sideBar = (SideBar) view.findViewById(R.id.side_bar);
//初始化数据
initData();
sideBar.setOnStrSelectCallBack(new SideBar.ISideBarSelectCallBack() {
@Override
public void onSelectStr(int index, String selectStr) {
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getName() == "新的朋友" || list.get(i).getName() == "群聊" ||
list.get(i).getName() == "标签" || list.get(i).getName() == "公众号" )
continue;
if (selectStr.equalsIgnoreCase(list.get(i).getFirstLetter())) {
listView.setSelection(i); // 选择到首字母出现的位置
return;
}
}
}
});
return view;
}
private void initData() {
//把从服务器获取解析的数据添加到map中,方便处理
Map<String, String> map = new HashMap<String, String>();
for (int i = 0; i < imgUrl.length; i ++) {
map.put(name[i], imgUrl[i]);
}
data.add(map);
//名字要提取出来在添加到list中,因为要进行字母排序
list = new ArrayList<>();
for (int i = 0; i < imgUrl.length; i++) {
list.add(new User(name[i]));
}
Collections.sort(list); // 对list进行排序,需要让User实现Comparable接口重写compareTo方法
//四个标签排序后再进行添加,好进行条件判断分离出来
list.add(0,new User("新的朋友"));
list.add(1,new User("群聊"));
list.add(2,new User("标签"));
list.add(3,new User("公众号"));
//四个标签图片不需要再服务器获取,直接移动端实现即可
list2 = new ArrayList<>();
list2.add(R.drawable.newfriend);
list2.add(R.drawable.groupchat);
list2.add(R.drawable.sign);
list2.add(R.drawable.publicnum);
/*创建自定义适配器,并设置给listview*/
SortAdapter adapter = new SortAdapter(getActivity().getApplicationContext(), list, list2, data);
listView.setAdapter(adapter);
}
// 1.编写一个发送请求的方法
// 发送请求的主要方法
public void httpUrlConnPost(String number) {
HttpURLConnection urlConnection = null;
URL url;
try {
// 请求的URL地地址
url = new URL(
"http://100.2.178.10:8080/AndroidServer_war_exploded/Contact");
urlConnection = (HttpURLConnection) url.openConnection();// 打开http连接
urlConnection.setConnectTimeout(3000);// 连接的超时时间
urlConnection.setUseCaches(false);// 不使用缓存
// urlConnection.setFollowRedirects(false);是static函数,作用于所有的URLConnection对象。
urlConnection.setInstanceFollowRedirects(true);// 是成员函数,仅作用于当前函数,设置这个连接是否可以被重定向
urlConnection.setReadTimeout(3000);// 响应的超时时间
urlConnection.setDoInput(true);// 设置这个连接是否可以写入数据
urlConnection.setDoOutput(true);// 设置这个连接是否可以输出数据
urlConnection.setRequestMethod("POST");// 设置请求的方式
urlConnection.setRequestProperty("Content-Type",
"application/json;charset=UTF-8");// 设置消息的类型
urlConnection.connect();// 连接,从上述至此的配置必须要在connect之前完成,实际上它只是建立了一个与服务器的TCP连接
JSONObject json = new JSONObject();// 创建json对象
//json.put("title", URLEncoder.encode(title, "UTF-8"));// 使用URLEncoder.encode对特殊和不可见字符进行编码
json.put("number", URLEncoder.encode(number, "UTF-8"));// 把数据put进json对象中
String jsonstr = json.toString();// 把JSON对象按JSON的编码格式转换为字符串
// ------------字符流写入数据------------
OutputStream out = urlConnection.getOutputStream();// 输出流,用来发送请求,http请求实际上直到这个函数里面才正式发送出去
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(out));// 创建字符流对象并用高效缓冲流包装它,便获得最高的效率,发送的是字符串推荐用字符流,其它数据就用字节流
bw.write(jsonstr);// 把json字符串写入缓冲区中
bw.flush();// 刷新缓冲区,把数据发送出去,这步很重要
out.close();
bw.close();// 使用完关闭
Log.i("aa", urlConnection.getResponseCode()+"");
//以下判斷是否訪問成功,如果返回的状态码是200则说明访问成功
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
// 得到服务端的返回码是否连接成功
// ------------字符流读取服务端返回的数据------------
InputStream in = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(
new InputStreamReader(in));
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = br.readLine()) != null) {
// BufferedReader特有功能,一次读取一行数据
System.out.println("测试:" + str);
buffer.append(str);
}
in.close();
br.close();
JSONObject rjson = new JSONObject(buffer.toString());
String str1 = rjson.getJSONObject("json").get("img").toString();
imgUrl = str1.split("\r\n");
String str2 = rjson.getJSONObject("json").get("name").toString();
name = str2.split("\r\n");
boolean result = rjson.getBoolean("json");// 从rjson对象中得到key值为"json"的数据,这里服务端返回的是一个boolean类型的数据
System.out.println("json:===" + result);
//如果服务器端返回的是true,则说明注册成功,否则注册失败
if (result) {
// 判断结果是否正确
//在Android中http请求,必须放到线程中去作请求,但是在线程中不可以直接修改UI,只能通过hander机制来完成对UI的操作
myhander.sendEmptyMessage(1);
Log.i("用户:", "登录成功");
} else {
myhander.sendEmptyMessage(2);
System.out.println("222222222222222");
Log.i("用户:", "登录失败");
}
} else {
myhander.sendEmptyMessage(2);
}
} catch (Exception e) {
e.printStackTrace();
Log.i("aa", e.toString());
System.out.println("11111111111111111");
myhander.sendEmptyMessage(2);
} finally {
urlConnection.disconnect();// 使用完关闭TCP连接,释放资源
}
}
// 在Android中不可以在线程中直接修改UI,只能借助Handler机制来完成对UI的操作
class MyHander extends Handler {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
//判断hander的内容是什么,如果是1则说明注册成功,如果是2说明注册失败
switch (msg.what) {
case 1:
Log.i("aa", msg.what + "");
break;
case 2:
Log.i("aa", msg.what + "");
}
}
}
}
上面代码主要内容就是先向服务器发送请求获取微信好友信息,初始化UI和数据,把数据封装再集合里并且实现滑动或选择字母索引时的回调接口,然后通过给ListView设置自定义的适配器(后面会给出),并把数据集合一并传过去
既然用到了ListView,我们就还需要一个适配器。
创建自定义适配器SortAdapter.java
SortAdapter.java
package com.example.wxchatdemo.adapter;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.wxchatdemo.R;
import com.example.wxchatdemo.tools.User;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import java.util.Map;
public class SortAdapter extends BaseAdapter{
//自定义handler机制
private ImageHandler imgHandler = new ImageHandler();
private Bitmap img;
private ViewHolder viewHolder;
private List<User> list = null;
private List<Integer> list2 = null;
private List<Map<String, String>> data = null;
private Context mContext;
public SortAdapter(Context mContext, List<User> list, List<Integer> list2, List<Map<String, String>> data) {
this.mContext = mContext;
this.list = list;
this.list2 = list2;
this.data = data;
}
public int getCount() {
return this.list.size();
}
public Object getItem(int position) {
return list.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View view, ViewGroup arg2) {
final User user = list.get(position);
if (view == null) {
viewHolder = new ViewHolder();
//获取listview对应的item布局
view = LayoutInflater.from(mContext).inflate(R.layout.contactlist_item, null);
//初始化组件
viewHolder.img = (ImageView) view.findViewById(R.id.img);
viewHolder.name = (TextView) view.findViewById(R.id.name);
viewHolder.catalog = (TextView) view.findViewById(R.id.catalog);
viewHolder.contact_count = (TextView) view.findViewById(R.id.contact_count);
viewHolder.divider = (View) view.findViewById(R.id.divider);
view.setTag(viewHolder);
} else {
System.out.println("position=" + position);
viewHolder = (ViewHolder) view.getTag();
}
//0~3是标签单独处理
if (position == 0 || position == 1 || position == 2 || position == 3) {
viewHolder.catalog.setVisibility(View.GONE);
viewHolder.img.setImageResource(list2.get(position));
viewHolder.name.setText(this.list.get(position).getName());
viewHolder.divider.setVisibility(View.GONE);
viewHolder.contact_count.setVisibility(View.GONE);
}else {
//根据position获取首字母作为目录catalog
String catalog = list.get(position).getFirstLetter();
//如果当前位置等于该分类首字母的Char的位置 ,则认为是第一次出现
if(position == getPositionForSection(catalog)){
viewHolder.catalog.setVisibility(View.VISIBLE);
viewHolder.catalog.setText(user.getFirstLetter().toUpperCase());
}else{
viewHolder.catalog.setVisibility(View.GONE);
}
Map<String, String> map = data.get(0);
Thread thread1 = new Thread(new Runnable() {
@Override
public void run() {
img = getImg(map.get(list.get(position).getName()));
Message msg = imgHandler.obtainMessage();
msg.what = 0;
msg.obj = img;
imgHandler.sendMessage(msg);
}
});
thread1.start();
try {
thread1.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
viewHolder.img.setImageBitmap(img);
viewHolder.name.setText(this.list.get(position).getName());
if (position == list.size() - 1) {
viewHolder.divider.setVisibility(View.VISIBLE);
viewHolder.contact_count.setVisibility(View.VISIBLE);
viewHolder.contact_count.setText(Integer.toString(position - 4) + "个朋友");
}else {
viewHolder.divider.setVisibility(View.GONE);
viewHolder.contact_count.setVisibility(View.GONE);
}
}
return view;
}
final static class ViewHolder {
TextView catalog;
ImageView img;
TextView name;
TextView contact_count;
View divider;
}
/**
* 获取catalog首次出现位置
*/
public int getPositionForSection(String catalog) {
for (int i = 0; i < getCount(); i++) {
if (list.get(i).getName() != "新的朋友" && list.get(i).getName() != "群聊" &&
list.get(i).getName() != "标签" && list.get(i).getName() != "公众号") {
String sortStr = list.get(i).getFirstLetter();
if (catalog.equalsIgnoreCase(sortStr)) {
return i;
}
}
}
return -1;
}
/**
* 从服务器读取图片流数据,并转换为Bitmap格式
* @return Bitmap
*/
private Bitmap getImg(String url){
Bitmap img = null;
try {
URL imgUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) imgUrl.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(1000 * 6);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Charset", "UTF-8");
conn.connect();
//输出流写参数
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
String param = getParam();
dos.writeBytes(param);
dos.flush();
dos.close();
int resultCode = conn.getResponseCode();
if(HttpURLConnection.HTTP_OK == resultCode){
InputStream is = conn.getInputStream();
img = BitmapFactory.decodeStream(is);
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
return img;
}
/**
* 测试参数
* @return
*/
private String getParam(){
JSONObject jsObj = new JSONObject();
try {
jsObj.put("picFormat", "jpg");
jsObj.put("testParam", "9527");
} catch (JSONException e) {
e.printStackTrace();
}
return jsObj.toString();
}
/**
* 异步线程请求到的图片数据,利用Handler,在主线程中显示
*/
class ImageHandler extends Handler {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 0:
img = (Bitmap)msg.obj;
break;
default:
break;
}
}
}
}
上面代码主要功能就是把数据呈现再相应组件上
适配器还用到了一个布局,即listview对应布局,创建contactlist_item.xml
contactlist_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="vertical">
<TextView
android:id="@+id/catalog"
android:layout_width="match_parent"
android:layout_height="32dp"
android:background="#E0E0E0"
android:paddingLeft="10dp"
android:paddingTop="5dp"
android:textColor="#454545"
android:textSize="13sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:padding="10dp" />
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:padding="10dp"
android:textColor="#336598"
android:textSize="16sp" />
LinearLayout>
<View
android:id="@+id/divider"
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:background="#90909090" />
<TextView
android:id="@+id/contact_count"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#FFFFFF"
android:paddingLeft="150dp"
android:paddingTop="5dp"
android:textColor="#454545"
android:textSize="13sp" />
LinearLayout>
布局有四部分,第一个是目录,即A,B,C,D这样的索引,仅当该目录下的第一项出现时才显示;第二个是线性布局,里面包括微信头像和姓名,第三个是自定义的分割线性(通过View实现),因为微信最后一个联系人的分割线是宽度充满屏幕的,要单独定义,最后一个是统计联系人的TextView组件
服务端的功能和以往文章是类似,就不详细demo了,直接上代码
创建Servlet Contact.java,实现服务端和客户端的数据交互
Contact.java
package com.example.controller;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.example.pojo.ContactList;
import com.example.service.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URLDecoder;
@WebServlet(name = "Contact", value = "/Contact")
public class Contact extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置字符编码,防止中文乱码
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("UTF-8");
//以json数据完成操作
response.setContentType("application/json;charset=UTF-8");
System.out.println(request.getContentType());// 得到客户端发送过来内容的类型,application/json;charset=UTF-8
System.out.println(request.getRemoteAddr());// 得到客户端的ip地址,
BufferedReader br = new BufferedReader(new InputStreamReader(// 使用字符流读取客户端发过来的数据
request.getInputStream()));
String line = null;
StringBuffer s = new StringBuffer();//StringBuffer String的区别,如果要对数据作頻繁的修改,則用StringBuffer
// 以一行的形式读取数据
while ((line = br.readLine()) != null) {
s.append(line);
}
// 关闭io流
br.close();
System.out.println(s.toString());// {"password":"123456","name":"admin"}
//JSON:这是json解析包,IDEA是没有,要我们自己导入
ContactList contactList = JSON.parseObject(s.toString(), ContactList.class);//是用了反射机制來完成对象的封闭
//以utf-8解码操作
String number = URLDecoder.decode(contactList.getNumber(), "utf-8");
System.out.println(contactList);
// 去数据库完成用户登录功能
UserServiceImpl us = new UserServiceImpl();
//调用登录的方法
ContactList contactList1 = us.contact(number);
if(contactList1 != null) {
//将结果返回给客户端 ,將結果構建成json數據返回給客戶端
JSONObject rjson = new JSONObject();
rjson.put("json", contactList1 );
response.getOutputStream().write(
rjson.toString().getBytes("UTF-8"));// 向客户端发送一个带有json对象内容的响应
}
}
}
上面代码用到微信通讯录界面的实体类,下面将给出
实体类ContactList.java
ContactList.java
package com.example.pojo;
public class ContactList {
private int id;
private String img;
private String name;
private String number;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
@Override
public String toString() {
return "ContactList{" +
"id=" + id +
", img='" + img + '\'' +
", name='" + name + '\'' +
", number='" + number + '\'' +
'}';
}
}
在service层中的接口UserService.java添加处理微信通讯录界面数据业务逻辑处理的抽象方法
//微信通讯录
ContactList contact(String number);
在service层中的类UserServiceImpl.java重写上面接口刚添加的方法
public ContactList contact(String number) {
//调用dao层完成数据查询操作
ContactList contactList = ud.findContact(number);
return contactList;
}
在dao层中的接口UserDao .java添加处理微信通信录界面数据并操作数据库的的抽象方法
//查询微信通信录列表
ContactList findContact(String number);
在dao层中的类UserDaoImpl.java重写上面接口刚添加的方法
@Override
public ContactList findContact(String number) {
String sql = "select * from contact where number=?;";
ResultSet rs = JDBCUtil.executeQuery(sql, number);
//判断是否查询到用户
try {
if (rs.next()) {
//如果查询到用户,将用户封装到User对象中
int id = rs.getInt("id");
String img = rs.getString("img");
String name = rs.getString("name");
String number1 = rs.getString("number");
//将查询到的用户封装到一个User对象中
ContactList contactList = new ContactList();
contactList .setId(id);
contactList .setImg(img);
contactList .setName(name);
contactList .setNumber(number1);
System.out.println("查询到的用户" + contactList);
return contactList;
}
}catch (SQLException throwables) {
throwables.printStackTrace();
}
return null;
}
在imgs目录下创建存放通讯录微信头像的目录,之后再往里添加图片即可
下面给出我的表结构以及表内容
每一条记录对应一个用户,客户端通过微信号向服务器发送请求,服务器接受请求后向数据库进行查找,如果查找成功将返回一条记录给服务端,客户端进行解析分离
测试前要事先在数据库里添加数据