通讯录

来源：互联网发布：工兵铲推荐知乎编辑：程序博客网时间：2024/05/17 08:30

获取手机联系人的方法：

 public static List<ConInfo>  getCon(Context context){        ContentResolver resolver = context.getContentResolver();// 获取手机联系人        Cursor phoneCursor = resolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null, null, null, null);       List<ConInfo> list = new ArrayList<ConInfo>();        if (phoneCursor != null) {            while (phoneCursor.moveToNext()){                String name = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));                String num = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));                ConInfo conInfo = new ConInfo(name,num);                list.add(conInfo);            }        }       return list;    }

其中ConInfo是一个封装联系人信息的类

private String name;private String num;ConInfo(String name,String num){    setName(name);    setNum(num);}

ListView中的设置：

public View getView(int i, View view, ViewGroup viewGroup) {    //优化：减少view的加载，避免卡顿情况    Viewholder hold = new Viewholder();    if(view == null){    view = View.inflate(getApplicationContext(),R.layout.contact,null);    hold.name = (TextView) view.findViewById(R.id.name);    hold.num = (TextView) view.findViewById(R.id.num);       hold.name.setText(lists.get(i).getName());        hold.num.setText(lists.get(i).getNum());        view.setTag(hold);}else {        hold = (Viewholder) view.getTag();        hold.name.setText(lists.get(i).getName());        hold.num.setText(lists.get(i).getNum());    }    return view;}

其中使用了Viewholder进行了一点优化，减少了view的价值，避免卡顿现象

private static class Viewholder {    TextView name;    TextView num;}

之后可以改成一个完整的通讯录，可以打电话、存多个电话，加入照片

0 0