Android仿手机通讯录地址选择功能

/**   * 重写   * @param canvas   */  @Override  protected void onDraw(Canvas canvas) {    super.onDraw(canvas);    int height=getHeight();//获取对应的高度    int width=getWidth();//获取对应的宽度    int singleHeight=height/b.length;//获取每一个字母的高度    for(int i=0;i<b.length;i++){      paint.setColor(Color.rgb(33,65,98));      paint.setTypeface(Typeface.DEFAULT_BOLD);      paint.setAntiAlias(true);      paint.setTextSize(20);      //选中      if(i==choose)      {        paint.setColor(Color.parseColor("#3399ff"));//设置选中状态颜色        paint.setFakeBoldText(true);      }      //x坐标等于中间-字符串宽度的一办(????????)      float xPos=width/2-paint.measureText(b[i])/2;      float yPos=singleHeight*i+singleHeight;      canvas.drawText(b[i],xPos,yPos,paint);      paint.reset();//重置画笔    }  }

 /**   * 重写   * @param event   * @return   */  @TargetApi(Build.VERSION_CODES.JELLY_BEAN)  @Override  public boolean dispatchTouchEvent(MotionEvent event) {    int action=event.getAction();    float y=event.getY();//点击Y坐标    int oldChoose=choose;    OnTouchingLetterChangedListener listener=onTouchingLetterChangedListener;    int c=(int)(y/getHeight()*b.length);//点击y坐标所占总高度的比例*b数组的长度就等于点击b中的个数    switch (action){      case MotionEvent.ACTION_UP:        setBackground(new ColorDrawable(0*00000000));        choose=-1;//        invalidate();        if(mTextDialog!=null)        {          mTextDialog.setVisibility(View.INVISIBLE);        }        break;      default:        setBackgroundResource(R.drawable.sidebar_background);        if(oldChoose!=c)        {          if(c>=0 && c<b.length)          {            if(listener!=null)            {              listener.onTouchingLetterChanged(b[c]);            }            if(mTextDialog!=null)            {              mTextDialog.setText(b[c]);              mTextDialog.setVisibility(View.VISIBLE);            }            choose=c;            invalidate();          }        }        break;    }    return true;  }

 /**   * 向外公开的方法   * @param onTouchingLetterChangedListener   */  public void setOnTouchingLetterChangedListener(OnTouchingLetterChangedListener onTouchingLetterChangedListener){    this.onTouchingLetterChangedListener=onTouchingLetterChangedListener;  }

/**   * 根据ListView的当前位置获取匪类的首字母的Char ascii值   * @param position   * @return   */  public int getSectionForPosition(int position){    return list.get(position).getSortLetters().charAt(0);  }  /**   * 根据分类的首字母的Char ascii值获取其第一次出现该首字母的位置   * @param section   * @return   */  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;  }

 @Override  public View getView(final int i, View view, ViewGroup viewGroup) {    ViewHolder holder=null;    final Province province=list.get(i);    if(view==null)    {      holder=new ViewHolder();      view=LayoutInflater.from(mContext).inflate(R.layout.item,null);      holder.tvLetter= (TextView) view.findViewById(R.id.catalog);      holder.tvTitle= (TextView) view.findViewById(R.id.title);      view.setTag(holder);    }    else    {      holder= (ViewHolder) view.getTag();    }    //根据position获取分类的首字母的char ascii值    int section=getSectionForPosition(i);    //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(i==getPositionForSection(section))    {      holder.tvLetter.setVisibility(View.VISIBLE);      holder.tvLetter.setText(province.getSortLetters());    }    else    {      holder.tvLetter.setVisibility(View.GONE);    }    holder.tvTitle.setText(this.list.get(i).getProvinceName());    return view;  }

public class ProvinceActivity extends Activity {  private Context mContext;  private ListView sortListView;  private SideBar sideBar;  private TextView dialog;  private ProvinceAdapter adapter;  /**   * 汉字转换成拼音的类   */  private CharacterParser characterParser;  private List<Province> sourceDateList;  /**   * 根据拼音来排列ListView里面的数据类   */  private PinyinComparator pinyinComparator;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.a_province);    mContext=this;    initView();  }  private void initView() {    //实例化汉字转拼音类    characterParser=CharacterParser.getInstance();    pinyinComparator=new PinyinComparator();    sideBar= (SideBar) findViewById(R.id.sidrbar);    dialog= (TextView) findViewById(R.id.dialog);    sideBar.setTextView(dialog);    //设置右侧触摸监听    sideBar.setOnTouchingLetterChangedListener(new SideBar.OnTouchingLetterChangedListener() {      @Override      public void onTouchingLetterChanged(String s) {        //该字母首次出现的位置        int position=adapter.getPositionForSection(s.charAt(0));        if(position!=-1)        {          sortListView.setSelection(position);        }      }    });    sortListView= (ListView) findViewById(R.id.lv_pro);    sortListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {      @Override      public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {        Intent intent=new Intent();        intent.putExtra("provinceId",((Province)adapter.getItem(i)).getId());        intent.putExtra("provinceName",((Province)adapter.getItem(i)).getProvinceName());        intent.setClass(mContext,CityActivity.class);        startActivityForResult(intent,0);      }    });    //获取数据    volley_get();  }  @Override  protected void onActivityResult(int requestCode, int resultCode, Intent data) {    if(requestCode==0)    {      if(resultCode==1)      {        setResult(1,data);        finish();      }    }    super.onActivityResult(requestCode, resultCode, data);  }  /**   * Volley加载数据   */  private void volley_get(){    RequestQueue mQueue=Volley.newRequestQueue(mContext);    JsonObjectRequest jsonObjectRequest=new JsonObjectRequest("http://10.0.0.103:8080/StoAppPro/GetProvince",null,new Response.Listener<JSONObject>() {      @Override      public void onResponse(JSONObject jsonObject) {        //Gson解析，直接将jsonObject的data值转换成list        Gson gson=new Gson();        Type listType=new TypeToken<List<Province>>(){}.getType();        try {          List<Province> list=gson.fromJson(jsonObject.get("data").toString(),listType);          sourceDateList=filledData(list);          Log.e("wj", sourceDateList.get(0).getId() + "");          //根据a-z进行排序源数据          Collections.sort(sourceDateList,pinyinComparator);          //初始化适配器          adapter=new ProvinceAdapter(mContext,sourceDateList);          //绑定适配器          sortListView.setAdapter(adapter);        } catch (JSONException e) {          e.printStackTrace();        }      }    },new Response.ErrorListener() {      @Override      public void onErrorResponse(VolleyError volleyError) {      }    });    mQueue.add(jsonObjectRequest);  }  /**   * 为ListView填充数据   * @param   * @return   */  private List<Province> filledData(List<Province> list){    List<Province> mSortList = new ArrayList<Province>();    for(int i=0; i<list.size(); i++){      Province province = new Province();      province.setProvinceName(list.get(i).getProvinceName());      province.setId(list.get(i).getId());      //汉字转换成拼音      String pinyin = characterParser.getSelling(list.get(i).getProvinceName());      String sortString = pinyin.substring(0, 1).toUpperCase();//获取拼音首字母      // 正则表达式，判断首字母是否是英文字母      if(sortString.matches("[A-Z]")){        province.setSortLetters(sortString.toUpperCase());      }else{        province.setSortLetters("#");      }      mSortList.add(province);    }    return mSortList;  }}