手机安全卫士学习3--黑名单的拦截
1创建一个数据库的帮助类,并重写其构造方法
package com.djf.mobilesafty.blacknumber.db; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.database.sqlite.SQLiteOpenHelper; import android.nfc.NfcAdapter.CreateBeamUrisCallback; public class BlackNumberOpenDBhelper extends SQLiteOpenHelper { public BlackNumberOpenDBhelper(Context context, String name, CursorFactory factory, int version) { super(context, "blacknumber.db", null, 1); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL("create table blacknumber (_id integer primary key autoincrement, number verchar(20),mode verchar(2))"); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub } }
2 创建数据库的增删改查方法
package com.djf.mobilesafty.blacknumber.dao; import java.util.ArrayList; import java.util.List; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import com.djf.mobilesafty.blacknumber.db.BlackNumberOpenDBhelper; import com.djf.mobilesafty.blacknumber.domin.NumberInfo; public class BlackNumberDao { private BlackNumberOpenDBhelper helper; /** * 构造方法 */ public BlackNumberDao(Context context) { helper = new BlackNumberOpenDBhelper(context, "blacknumber.db", null, 1); } /*** * 查询黑名单是否存在 */ public boolean findnumber(String number) { boolean result = false; SQLiteDatabase db = helper.getReadableDatabase(); Cursor cursor = db.rawQuery( "select * from blacknumber where number=? ", new String[] { number }); if (cursor.moveToNext()) { result = true; } cursor.close(); db.close(); return result; } /*** * 查询所有黑名单 */ public List<NumberInfo> findall(){ List<NumberInfo> info = new ArrayList<NumberInfo>(); SQLiteDatabase db =helper.getReadableDatabase(); Cursor cursor =db.rawQuery("select number ,mode from blacknumber", null); while (cursor.moveToNext()) { NumberInfo numberInfo = new NumberInfo(); String number = cursor.getString(0); String mode = cursor.getString(1); numberInfo.setNumber(number); numberInfo.setMode(mode); info.add(numberInfo); } cursor.close(); db.close(); return info; } /** * 增加黑名单 * mode 1 短信拦截 2 电话拦截3 全部拦截 */ public void add(String number, String mode) { SQLiteDatabase db = helper.getWritableDatabase(); ContentValues cv = new ContentValues(); cv.put("number", number); cv.put("mode", mode); db.insert("blacknumber", null, cv); db.close(); } /** * 增加黑名单 * 修改拦截模式 */ public void update(String number, String mode) { SQLiteDatabase db = helper.getWritableDatabase(); ContentValues cv = new ContentValues(); cv.put("mode", mode); db.update("blacknumber", cv, "number=?", new String[]{number}); db.close(); } /** * 删除黑名单 * 修改拦截模式 */ public void delete(String number) { SQLiteDatabase db = helper.getWritableDatabase(); db.delete("blacknumber", "number=?", new String[]{number}); db.close(); } }
3创建相关信息的业务类
package com.djf.mobilesafty.blacknumber.domin; public class NumberInfo { private String number; private String mode; public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public String getMode() { return mode; } public void setMode(String mode) { this.mode = mode; } @Override public String toString() { return "numberinfor [number=" + number + ", mode=" + mode + "]"; } }
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