既然是单机版，那么必然是查询本地数据库了，所以我们得准备一个离线数据库文件(下载地址：http://download.csdn.net/detail/rowandjj/7660979).
步骤：1.创建一个工具类打开数据库：
package cn.edu.chd.mobilesafe.db.dao;import android.database.sqlite.SQLiteDatabase;public class AddressDao{ public static SQLiteDatabase getAddressDB(String path) { return SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY); }}2.编写业务方法：
首先需要使用正则表达式判断号码是手机号码还是固定电话。若是手机号码则根据前面7位查询数据库。
若是固定电话，则先要判断固定电话的长度，分下面几种情况：
3位区号+7位号码
3位区号+8位号码
4位区号+7位号码
4位区号+8位号码
根据区号即可查出归属地
package cn.edu.chd.mobilesafe.engine;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.os.Environment;import cn.edu.chd.mobilesafe.db.dao.AddressDao;public class AddressService{ public static String getAddress(String number) { String city = number; SQLiteDatabase db = AddressDao.getAddressDB(Environment.getExternalStorageDirectory().getPath()+"/address.db"); if(number.matches("^1[3458]\\d{9}$"))//手机号 { if(db.isOpen()) { Cursor cursor = db.rawQuery("select city from info where mobileprefix = ?", new String[]{number.substring(0, 7)}); if(cursor.moveToNext()) { city = cursor.getString(0); } } db.close(); }else//固定电话 { int len = number.length(); switch (len) { case 4: city = "模拟器"; break; case 7: case 8: city = "本地号码"; break; case 10://3位区号+7位号码 if(db.isOpen()) { Cursor cursor = db.rawQuery("select city from info where area = ? limit 1", new String[]{number.substring(0, 3)}); if(cursor.moveToNext()) { city = cursor.getString(0); } db.close(); } break; case 11://3位区号+8位号码，4位区号+7位号码 if(db.isOpen()) { Cursor cursor = db.rawQuery("select city from info where area = ? limit 1", new String[]{number.substring(0, 3)}); if(cursor.moveToNext()) { city = cursor.getString(0); } cursor = db.rawQuery("select city from info where area = ? limit 1", new String[]{number.substring(0, 4)}); if(cursor.moveToNext()) { city = cursor.getString(0); } db.close(); } break; case 12: if(db.isOpen()) { Cursor cursor = db.rawQuery("select city from info where area = ? limit 1", new String[]{number.substring(0, 4)}); if(cursor.moveToNext()) { city = cursor.getString(0); } db.close(); } break; } } if(db.isOpen()) { db.close(); } return city; }}3.调用业务类，查询手机归属地信息：
由于是数据库操作，所以使用了AsyncTask进行异步查询。
package cn.edu.chd.mobilesafe.ui;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;import cn.edu.chd.mobilesafe.R;import cn.edu.chd.mobilesafe.engine.AddressService;public class QueryNumberActivity extends Activity{ private Button but_query = null; private EditText et_number = null; private TextView tv_show = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.query_number); but_query = (Button) findViewById(R.id.but_query_p); et_number = (EditText) findViewById(R.id.et_query_p); tv_show = (TextView) findViewById(R.id.tv_show_p); but_query.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String text = et_number.getText().toString(); if(text.trim().equals("")) { Toast.makeText(QueryNumberActivity.this,"号码不能为空",0).show(); }else { //异步查询数据库，获得归属地信息显示到txetview上 new QueryNumberTask().execute(text); } } }); } public class QueryNumberTask extends AsyncTask<String, Void, String> { @Override protected String doInBackground(String... params) { String number = params[0]; //查询数据库，获取归属地信息 return AddressService.getAddress(number); } @Override protected void onPostExecute(String result) { tv_show.setText(result); } }}效果：
- 1楼RowandJJ13分钟前
- 不小心踩了自己一下......