Android获取系统联系人

1.在AndroidManifest中加入读写权限

2.Android系统管理联系人的URI

获取联系人的ID和NAME:ContactsContract.Contacts.CONTENT_URI
获取联系人的电话号码:ContactsContract.CommonDataKinds.Phone.CONTENT_URI
获取联系人的邮箱地址:ContactsContract.CommonDataKinds.Email.CONTENT_URI
（注：Contacts有两个表，分别是rawContact和Data，rawContact记录了用户的id和name,其中id栏名称为：ContactsContract.Contacts._ID, name名称栏为ContactContract.Contracts.DISPLAY_NAME,电话信息表的外键id为ContactsContract.CommonDataKinds.Phone.CONTACT_ID,电话号码栏名称为：ContactsContract.CommonDataKinds.Phone.NUMBER.

3.调用系统联系人获取电话号码

    Intent intent = new Intent(Intent.ACTION_PICK,
           ContactsContract.CommonDataKinds.Phone.CONTENT_URI);
    startActivityForResult(intent, 0);

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == 0) {
            String phoneNumber = "";
            if(data != null) {
                Uri uri = data.getData();
                Cursor cursor = getContentResolver().query(uri, null, null, null, null);
                if (null != cursor && cursor.moveToFirst()){
                    phoneNumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    //得到纯数字电话号码
                    if (phoneNumber.startsWith("+86")) {
                        phoneNumber = phoneNumber.replace("+86", "");
                    }
                    phoneNumber = phoneNumber.replace(" ", "");
                    phoneNumber = phoneNumber.replace("-", "");
                    editText.setText(phoneNumber);
                    cursor.close();
                }
            }
        }
    }