手机归属地查询
效果图：
分析：
1、传递多个参数，用一个类就好
2、打开数据库
private SQLiteDatabase database;
database=SQLiteDatabase.openOrCreateDatabase(file, null);
file是数据库的路径
3、在逻辑中多加判断
比如是否获取到正确的手机号
比如我们操作的字符串是否为空
比如时候获取正确参数
4、通过文件流来实现释放APK中包中的数据库文件到手机本地
5、需要用的数据库放在assets目录中
bufferIn = new BufferedInputStream(getAssets().open("naddress.db"));
6、确保输出流flush，如果不flush，数据会变少，有一部分没有成功写出到本地
bufferOut.flush();
7、try-catch的时候记得finally，去关闭输入流和输出流
8、-1为文件末
while ((len = bufferIn.read(buffer)) != -1)
9、File file = getDatabasePath("naddress.db");
这个方法得到这样的路径data/data/包/database/naddress.db
10、如果文件没有成功创建，我们取创建文件夹
if (!file.exists())
file.getParentFile().mkdirs();
11、正则表达式匹配手机号
Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$");
Matcher m = p.matcher(phoneNumber);
if (!m.matches())
12、百度的正确姿势
java 正则表达式验证手机号
13、找错误的时候多去看cause by
代码：
/查询手机号归属地2/res/layout/activity01.xml
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" > 6 7 <LinearLayout 8 android:layout_width="match_parent" 9 android:layout_height="wrap_content" 10 android:orientation="horizontal" > 11 12 <TextView 13 android:layout_width="wrap_content" 14 android:layout_height="wrap_content" 15 android:text="请输入手机号码：" /> 16 17 <EditText 18 android:id="@+id/et_mobileNum" 19 android:layout_width="205dip" 20 android:layout_height="wrap_content" /> 21 </LinearLayout> 22 23 <TextView 24 android:id="@+id/tv_city_cardType" 25 android:layout_width="wrap_content" 26 android:layout_height="wrap_content" 27 android:textColor="#ff0000" 28 android:textSize="25sp" 29 android:text="归属地：" /> 30 31 <Button 32 android:id="@+id/btn_search" 33 android:layout_width="wrap_content" 34 android:layout_height="wrap_content" 35 android:layout_gravity="center_horizontal" 36 android:onClick="query" 37 android:text="查询号码归属地" /> 38 39 </LinearLayout>
界面设计
database.AddressDao
1 package database;
2
3 import java.io.File;
4
5 import bean.InfoBean;
6 import android.database.Cursor;
7 import android.database.sqlite.SQLiteDatabase;
8
9 /*
10 * 操作数据库
11 */
12 public class AddressDao {
13 private SQLiteDatabase database;
14 public AddressDao(File file){
15 database=SQLiteDatabase.openOrCreateDatabase(file, null);
16 }
17 /**
18 * 获取城市及卡类型
19 * @param mobilePrefix 手机号码前缀
20 */
21 public InfoBean getCityOrCardType(String mobilePrefix){
22 String sql="select city,cardtype from address_tb where _id in(select outkey from numinfo where mobileprefix=?);";
23 Cursor cursor=database.rawQuery(sql, new String[]{mobilePrefix});
24 //就一条记录，不用用while，就if就好了
25 if(cursor.moveToNext()){
26 String city=cursor.getString(cursor.getColumnIndex("city"));
27 String cardtype=cursor.getString(cursor.getColumnIndex("cardtype"));
28 return new InfoBean(city, cardtype);
29 }
30 return null;
31 }
32 }
数据库操作
bean.InfoBean
1 package bean;
2
3 public class InfoBean {
4 private String city;
5 private String cardType;
6
7
8 public InfoBean(String city, String cardType) {
9 super();
10 this.city = city;
11 this.cardType = cardType;
12 }
13 public String getCity() {
14 return city;
15 }
16 public void setCity(String city) {
17 this.city = city;
18 }
19 public String getCardType() {
20 return cardType;
21 }
22 public void setCardType(String cardType) {
23 this.cardType = cardType;
24 }
25
26
27 }
传递数据的类（城市及归属地）
fry.Activity01
1 package fry;
2
3 import java.io.BufferedInputStream;
4 import java.io.BufferedOutputStream;
5 import java.io.File;
6 import java.io.FileOutputStream;
7 import java.io.IOException;
8 import java.util.regex.Matcher;
9 import java.util.regex.Pattern;
10
11 import bean.InfoBean;
12
13 import com.example.searchMobileCity.R;
14
15 import database.AddressDao;
16 import android.app.Activity;
17 import android.os.Bundle;
18 import android.view.View;
19 import android.view.View.OnClickListener;
20 import android.widget.Button;
21 import android.widget.EditText;
22 import android.widget.TextView;
23 import android.widget.Toast;
24
25 public class Activity01 extends Activity {
26 private Button btn_search;
27 private EditText et_mobileNum;
28 private TextView tv_city_cardType;
29 private AddressDao dao;
30
31 @Override
32 protected void onCreate(Bundle savedInstanceState) {
33 // TODO Auto-generated method stub
34 super.onCreate(savedInstanceState);
35 setContentView(R.layout.activity01);
36 initView();
37 // file就是数据库文件路径
38 File file = initDatabaseData();
39 dao = new AddressDao(file);
40
41 }
42
43 private void initView() {
44 tv_city_cardType = (TextView) findViewById(R.id.tv_city_cardType);
45 et_mobileNum = (EditText) findViewById(R.id.et_mobileNum);
46 btn_search = (Button) findViewById(R.id.btn_search);
47 }
48
49 /*
50 * 查询归属地
51 */
52 public void query(View view) {
53 tv_city_cardType.setText("归属地:");
54 String phoneNumber = et_mobileNum.getText().toString();
55 Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$");
56 Matcher m = p.matcher(phoneNumber);
57 if (!m.matches()) {
58 Toast.makeText(this, "请输入正确的手机号", Toast.LENGTH_SHORT).show();
59 return ;
60 } else {
61 String mobilePrefix = phoneNumber.substring(0, 7);
62 InfoBean bean = dao.getCityOrCardType(mobilePrefix);
63 if (bean == null) {
64 tv_city_cardType.setText("没查询到该号码的城市与归属地！！");
65 } else {
66 tv_city_cardType.setText("城市：" + bean.getCity() + " \n卡类型： "
67 + bean.getCardType());
68 }
69 }
70 }
71
72 /*
73 * 释放APK中包中的数据库文件到手机本地 读和写
74 */
75 private File initDatabaseData() {
76 // 这个方法得到这样的路径data/data/包/database/naddress.db
77 File file = getDatabasePath("naddress.db");
78 if (!file.exists()) {
79 file.getParentFile().mkdirs();
80 } else {
81 return file;
82 }
83
84 // 获取读入流
85 BufferedInputStream bufferIn = null;
86 // 输出流
87 BufferedOutputStream bufferOut = null;
88 try {
89 bufferIn = new BufferedInputStream(getAssets().open("naddress.db"));
90 bufferOut = new BufferedOutputStream(new FileOutputStream(file));
91 // 开始释放缓存流
92 // 读的时候，弄个缓存区，让释放快一点
93 byte[] buffer = new byte[8000];
94 int len = 0;
95 // -1为文件末
96 while ((len = bufferIn.read(buffer)) != -1) {
97 bufferOut.write(buffer, 0, len);
98 // 不flush的话文件大小会变小的
99 bufferOut.flush();
100 }
101 return file;
102 } catch (IOException e) {
103 // TODO Auto-generated catch block
104 e.printStackTrace();
105 } finally {
106 try {
107 if (bufferIn != null)
108 bufferIn.close();
109 if (bufferOut != null)
110 bufferOut.close();
111 } catch (IOException e) {
112 e.printStackTrace();
113 }
114 }
115 return null;
116 }
117 }
主activity
时间： 2024-04-12 09:49:05