获得手机号码归属地,我们有两种方式,一种就是通过WebService来获取嘛,但是这个是依赖于网络的,如果没有网络,那就没有办法用啦
另一种方法就是通过内置一个数据库,然后在用的时候查询就可以啦,但是这个数据库会很大,有16M所以这样就会造成我们的app体积过大的啦
所以我们就要对它进行压缩一下,怎样压缩呢,其实就是把里面一些重复的字段提取出来,然后达到压缩的作用,这个数据库经过我们的压缩,可以缩小到3M
这两个数据库,我会放到应用程序里面一起打包,想要下载的,到时可以下载来看看
未压缩前的数据库
我们可以看到,里面存放了很多中文字符,这就是这个数据库为什么那么大的原因啦,我们完全可以把这些中文放到另一个表,然后就存放一个id就行啦,这样就可以大大的缩小数据库的大小的啦
压缩后的数据库
压缩后的数据库就是上面一样的啦,体积只有3M,大大的缩小了体积。
如果我们想让这个数据库随着apk装到用户里面去,那么就要把这个文件放到res/raw这个目录下面,因为这个目录下面的资源都不会编译成二进制的格式的,所以然后就可以把整个数据库读取到sd卡上啦
但我们这个程序为了演示,我们就使用16M的那个大数据库啦,而且是通过网络把我们要用的数据库下载下来
好啦,废话不多说,直接上代码
com.xiaobin.security.ui.AToolActivity
- package com.xiaobin.security.ui;
- import java.io.File;
- import android.annotation.SuppressLint;
- import android.app.Activity;
- import android.app.ProgressDialog;
- import android.content.Intent;
- import android.os.Bundle;
- import android.os.Environment;
- import android.os.Handler;
- import android.os.Message;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.TextView;
- import android.widget.Toast;
- import com.xiaobin.security.R;
- import com.xiaobin.security.engine.DownloadTask;
- public class AToolActivity extends Activity implements OnClickListener
- {
- private static final int ERROR = 0;
- private static final int SUCCESS = 1;
- private TextView tv_atool_query;
- private ProgressDialog pd;
- @SuppressLint("HandlerLeak")
- private Handler handler = new Handler()
- {
- public void handleMessage(Message msg)
- {
- switch(msg.what)
- {
- case ERROR :
- Toast.makeText(AToolActivity.this, "下载数据库失败,请检查网络!", Toast.LENGTH_SHORT).show();
- break;
- case SUCCESS :
- Toast.makeText(AToolActivity.this, "数据库下载成功!", Toast.LENGTH_SHORT).show();
- break;
- default :
- break;
- }
- }
- };
- @Override
- protected void onCreate(Bundle savedInstanceState)
- {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.atool);
- tv_atool_query = (TextView) findViewById(R.id.tv_atool_query);
- tv_atool_query.setOnClickListener(this);
- }
- @Override
- public void onClick(View v)
- {
- switch(v.getId())
- {
- case R.id.tv_atool_query :
- if(isDBExist())
- {
- Intent intent = new Intent(this, QueryNumberActivity.class);
- startActivity(intent);
- }
- else
- {
- //提示用户下载数据库
- pd = new ProgressDialog(this);
- pd.setMessage("正在下载数据库...");
- pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
- pd.setCancelable(false);
- pd.show();
- new Thread()
- {
- public void run()
- {
- String path = getResources().getString(R.string.serverdb);
- File dir = new File(Environment.getExternalStorageDirectory(), "/security/db");
- if(!dir.exists())
- {
- dir.mkdirs();
- }
- String dbPath = Environment.getExternalStorageDirectory() + "/security/db/data.db";
- try
- {
- //这个类,我们在做更新apk的时候已经写好的啦,现在直接拿过来用就可以啦
- DownloadTask.getFile(path, dbPath, pd);
- pd.dismiss();
- }
- catch (Exception e)
- {
- e.printStackTrace();
- pd.dismiss();
- Message message = new Message();
- message.what = ERROR;
- handler.sendMessage(message);
- }
- };
- }.start();
- }
- break;
- default :
- break;
- }
- }
- private boolean isDBExist()
- {
- if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
- {
- File file = new File(Environment.getExternalStorageDirectory() + "/security/db/data.db");
- if(file.exists())
- {
- return true;
- }
- }
- return false;
- }
- }
- package com.xiaobin.security.dao;
- import android.database.sqlite.SQLiteDatabase;
- public class AddressDao
- {
- public static SQLiteDatabase getAddressDB(String path)
- {
- //打开那个存放电话号码的数据库
- return SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY);
- }
- }
- package com.xiaobin.security.engine;
- import android.database.Cursor;
- import android.database.sqlite.SQLiteDatabase;
- import android.os.Environment;
- import com.xiaobin.security.dao.AddressDao;
- public class NumberAddressService
- {
- public static String getAddress(String number)
- {
- String pattern = "^1[3458]\\d{9}$";
- String address = number;
- if(number.matches(pattern))//手机号码
- {
- address = query("select city from info where mobileprefix = ? ", new String[] {number.substring(0, 7)});
- if(address.equals(""))
- {
- address = number;
- }
- }
- else //固定电话
- {
- int len = number.length();
- switch(len)
- {
- case 4 : //模拟器
- address = "模拟器";
- break;
- case 7 : //本地号码
- address = "本地号码";
- break;
- case 8 : //本地号码
- address = "本地号码";
- break;
- case 10 : //3位区号,7位号码
- address = query("select city from info where area = ? limit 1", new String[] {number.substring(0, 3)});
- if(address.equals(""))
- {
- address = number;
- }
- break;
- case 11 : //3位区号,8位号码 或4位区号,7位号码
- address = query("select city from info where area = ? limit 1", new String[] {number.substring(0, 3)});
- if(address.equals(""))
- {
- address = query("select city from info where area = ? limit 1", new String[] {number.substring(0, 4)});
- if(address.equals(""))
- {
- address = number;
- }
- }
- break;
- case 12 : //4位区号,8位号码
- address = query("select city from info where area = ? limit 1", new String[] {number.substring(0, 4)});
- if(address.equals(""))
- {
- address = number;
- }
- break;
- default :
- break;
- }
- }
- return address;
- }
- private static String query(String sql, String[] selectionArgs)
- {
- String result = "";
- String path = Environment.getExternalStorageDirectory() + "/security/db/data.db";
- SQLiteDatabase db = AddressDao.getAddressDB(path);
- if(db.isOpen())
- {
- Cursor cursor = db.rawQuery(sql, selectionArgs);
- if(cursor.moveToNext())
- {
- result = cursor.getString(0);
- }
- cursor.close();
- db.close();
- }
- return result;
- }
- }
- package com.xiaobin.security.ui;
- import android.app.Activity;
- import android.os.Bundle;
- import android.text.TextUtils;
- import android.view.View;
- import android.view.animation.Animation;
- import android.view.animation.AnimationUtils;
- import android.widget.EditText;
- import android.widget.TextView;
- import com.xiaobin.security.R;
- import com.xiaobin.security.engine.NumberAddressService;
- public class QueryNumberActivity extends Activity
- {
- private TextView tv_result;
- private EditText et_query_number;
- @Override
- protected void onCreate(Bundle savedInstanceState)
- {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.query_number);
- tv_result = (TextView) findViewById(R.id.tv_query_result);
- et_query_number = (EditText) findViewById(R.id.et_query_number);
- }
- public void query(View v)
- {
- String number = et_query_number.getText().toString().trim();
- //如果查询内容为空,那么就抖动输入框
- if(TextUtils.isEmpty(number))
- {
- Animation shake = AnimationUtils.loadAnimation(this, R.anim.shake);
- et_query_number.startAnimation(shake);
- }
- else
- {
- String address = NumberAddressService.getAddress(number);
- tv_result.setText("归属地信息:" + address);
- }
- }
- }

