Android手机联系人快速索引(手机通讯录)

最近需要实现一个手机通讯录的快速索引功能。根据姓名首字母快速索引功能。下面是一个手机联系人快速索引的效果，总体来说代码不算难，拼音转换的地方略有复杂。下面上源码：源码中有注释。

下面是效果图：

MainActivity：

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {
 private ListView lv_main;
 private FriendAdapter adapter;
 private List<Friend> data = new ArrayList<Friend>();
 private QuickIndexView qiv_main;
 private TextView tv_main_word;
 private Handler handler = new Handler(){
 public void handleMessage(android.os.Message msg) {
  //隐藏word
  tv_main_word.setVisibility(View.GONE);
 }
 };
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 lv_main = (ListView) findViewById(R.id.lv_main);
 qiv_main = (QuickIndexView) findViewById(R.id.qiv_main);
 tv_main_word = (TextView) findViewById(R.id.tv_main_word);
 //设置监听
 qiv_main.setOnIndexChangedListener(new QuickIndexView.OnIndexChangedListener() {
  @Override
  public void onIndexChanged(String word) {
  tv_main_word.setText(word);
  tv_main_word.setVisibility(View.VISIBLE);
  //handler.removeMessages(1);
  //移除未处理的消息
  handler.removeCallbacksAndMessages(null);
  //发延迟消息
  handler.sendEmptyMessageDelayed(1, 2000);
  //滑动listview
  //查找对应的item
  for(int i=0;i<data.size();i++) {
   String fWord = data.get(i).getPinyin().substring(0, 1);
   if(word.equals(fWord)) {
   lv_main.setSelection(i);
   return;
   }
  }
  }
  @Override
  public void onUp() {
  //tv_main_word.setVisibility(View.GONE);
  }
 });
 //显示列表
 adapter = new FriendAdapter();
 initData();
 lv_main.setAdapter(adapter);
 //lv_main.setSelection(5);
 }
 private void initData() {
 data.add(new Friend("张三"));
 data.add(new Friend("杨九"));
 data.add(new Friend("胡继群"));
 data.add(new Friend("刘畅"));
 data.add(new Friend("钟泽兴"));
 data.add(new Friend("尹革新"));
 data.add(new Friend("安传鑫"));
 data.add(new Friend("张骞壬"));
 data.add(new Friend("温松"));
 data.add(new Friend("李凤秋"));
 data.add(new Friend("刘甫"));
 data.add(new Friend("娄全超"));
 data.add(new Friend("张猛"));
 data.add(new Friend("王英杰"));
 data.add(new Friend("李振南"));
 data.add(new Friend("孙仁政"));
 data.add(new Friend("唐春雷"));
 data.add(new Friend("牛鹏伟"));
 data.add(new Friend("姜宇航"));
 data.add(new Friend("刘挺"));
 data.add(new Friend("张洪瑞"));
 data.add(new Friend("张建忠"));
 data.add(new Friend("侯亚帅"));
 data.add(new Friend("刘帅"));
 data.add(new Friend("乔竞飞"));
 data.add(new Friend("徐雨健"));
 data.add(new Friend("吴亮"));
 data.add(new Friend("王兆霖"));
 data.add(new Friend("阿三"));
 Collections.sort(data);
 }
 class FriendAdapter extends BaseAdapter {
 @Override
 public int getCount() {
  return data.size();
 }
 @Override
 public Object getItem(int position) {
  return data.get(position);
 }
 @Override
 public long getItemId(int position) {
  return 0;
 }
 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  ViewHolder holder = null;
  if(convertView==null) {
  holder = new ViewHolder();
  convertView = View.inflate(MainActivity.this, R.layout.item_main, null);
  holder.wordTV = (TextView) convertView.findViewById(R.id.tv_item_word);
  holder.nameTV = (TextView) convertView.findViewById(R.id.tv_item_name);
  convertView.setTag(holder);/
public class QuickIndexView extends View {
 private float itemWidth;
 private float itemHeight;
 // private float wordWidth;
 // private float wordHeight;
 private String[] indexArr = { "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 paint;
 public QuickIndexView(Context context, AttributeSet attrs) {
 super(context, attrs);
 paint = new Paint();
 paint.setColor(Color.WHITE);
 paint.setTextSize(16);
 paint.setAntiAlias(true);
 }
 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 itemWidth = this.getMeasuredWidth();
 itemHeight = this.getMeasuredHeight() / 26f;
 }
 @Override
 protected void onDraw(Canvas canvas) {
 //当每次触发重绘的时候，就把26个字母循环一遍
 for (int i = 0; i < indexArr.length; i++) {
  String word = indexArr[i];
  // 设置文字的颜色
  if (i == touchIndex) {
  //这里设置被点击的字母变化：颜色变灰色、字体变25sp
  paint.setColor(Color.GRAY);
  paint.setTextSize(25);
  } else {
  //其他没被点击的字母，保持原有状态：设置颜色、字体大小为18sp
  paint.setColor(Color.BLACK);
  paint.setTextSize(18);
  }
  // 得到word的宽高
  Rect bounds = new Rect();
  paint.getTextBounds(word, 0, word.length(), bounds);
  //得到字体的宽
  int wordWidth = bounds.width();
  //得到字体的高
  int wordHeight = bounds.height();
  // 计算word的左上角的坐标：字母所在的X坐标、Y坐标
  float x = itemWidth / 2 - wordWidth / 2;
  float y = itemHeight / 2 + wordHeight / 2 + i * itemHeight;
  // 绘制word
  canvas.drawText(word, x, y, paint);
 }
 }
 // ///////////////////////////////////////////////////////////////////////
 private int touchIndex = -1;// 触摸的字母的下标
 @Override
 public boolean onTouchEvent(MotionEvent event) {
 // 得到事件坐标
 float eventY = event.getY();
 switch (event.getAction()) {
 case MotionEvent.ACTION_DOWN:
 case MotionEvent.ACTION_MOVE:
  // 计算下标
  int index = (int) (eventY / itemHeight);
  if (index > 25) {
  index = 25;
  }
  if (index < 0) {
  index = 0;
  }
  // 如果下标有改变, 强制重绘
  if (index != touchIndex) {
  // 更新touchIndex
  touchIndex = index;
  // 强制重绘
  invalidate();
  // 通知Activity更新TextView
  if (onIndexChangedListener != null) {
   onIndexChangedListener.onIndexChanged(indexArr[index]);
  }
  }
  break;
 case MotionEvent.ACTION_UP:
  touchIndex = -1;
  // 强制重绘
  invalidate();
  // 通知Activity更新TextView
  if (onIndexChangedListener != null) {
  onIndexChangedListener.onUp();
  }
  break;
 default:
  break;
 }
 return true;// 所有的事件都由当前视图消费
 }
 private OnIndexChangedListener onIndexChangedListener;
 
 public void setOnIndexChangedListener(
  OnIndexChangedListener onIndexChangedListener) {
 this.onIndexChangedListener = onIndexChangedListener;
 }
 interface OnIndexChangedListener {
 // 当操作的下标改变时自动调用
 public void onIndexChanged(String word);
 // 当up时调用
 public void onUp();
 }
}

联系人类：

public class Friend implements Comparable<Friend> {
 private String name;
 private String pinyin;
 public Friend(String name) {
 super();
 this.name = name;
 pinyin = PinYinUtils.getPinYin(name);
 }
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 public String getPinyin() {
 return pinyin;
 }
 public void setPinyin(String pinyin) {
 this.pinyin = pinyin;
 }
 @Override
 public String toString() {
 return "Friend [name=" + name + ", pinyin=" + pinyin + "]";
 }
 @Override
 public int compareTo(Friend another) {
 return this.pinyin.compareTo(another.getPinyin());
 }
}

工具类：用于将汉字转换为拼音

public class PinYinUtils {
 
 public static String getPinYin(String hanzi){
 String pinyin = "";
 HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();//控制转换是否大小写，是否带音标
 format.setCaseType(HanyuPinyinCaseType.UPPERCASE);//大写
 format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
 //由于不能直接对多个汉字转换，只能对单个汉字转换
 char[] arr = hanzi.toCharArray();
 for (int i = 0; i < arr.length; i++) {
  if(Character.isWhitespace(arr[i]))continue;//如果是空格，则不处理，进行下次遍历
  //汉字是2个字节存储，肯定大于127，所以大于127就可以当为汉字转换
  if(arr[i]>127){
  try {
   //由于多音字的存在，单 dan shan
   String[] pinyinArr = PinyinHelper.toHanyuPinyinStringArray(arr[i], format);
   if(pinyinArr!=null){
   pinyin += pinyinArr[0];
   }else {
   pinyin += arr[i];
   }
  } catch (BadHanyuPinyinOutputFormatCombination e) {
   e.printStackTrace();
   //不是正确的汉字
   pinyin += arr[i];
  }
  }else {
  //不是汉字，
  pinyin += arr[i];
  }
 }
 return pinyin;
 }
}

以上代码是关于Android手机联系人快速索引(手机通讯录)的全部叙述，希望大家喜欢。

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