ここに私のdatabase.javaファイルがあります
package com.example.mobile_computing_project;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class Database_Helper extends SQLiteOpenHelper {
public Database_Helper(Context smsReceiver) {
super(smsReceiver, dbName, null, 1);
// TODO Auto-generated constructor stub
}
static final String dbName="MySms";
static final String Login_Table="Login_Authentication";
static final String colID="ID";
static final String colUsername="Username";
static final String colPassword="Password";
static final String Sms_table = "Sms_Repository";
static final String number = "Cell_Num";
static final String message = "message_text";
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE " + Login_Table + "(" + colID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + colUsername + " TEXT NOT NULL," + colPassword + " TEXT NOT NULL);");
db.execSQL("CREATE TABLE " + Sms_table + "(" + number + " TEXT NOT NULL, " + message + " TEXT NOT NULL);");
Log.w("Come aww man", "Database Table Created!!");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS " + "Login_Authentication");
db.execSQL("DROP TABLE IF EXISTS " + "Sms_table");
onCreate(db);
}
public void insert_new_user(String username,String password)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(Database_Helper.colUsername,username);
cv.put(Database_Helper.colPassword,password);
db.insert(Login_Table, null, cv);
db.close();
}
public void insert_text(String number, String text)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(Database_Helper.number,number);
cv.put(Database_Helper.message,text);
db.insert(Sms_table, null, cv);
db.close();
}
public void delete(long id)
{
SQLiteDatabase db = this.getWritableDatabase();
db.delete(Login_Table, colID+"="+id, null);
}
public String getinfo() {
// TODO Auto-generated method stub
String[] columns = new String[]{ colID,colUsername,colPassword};
SQLiteDatabase bm = this.getReadableDatabase();
String res = " ";
Cursor c = bm.query(Login_Table, columns, null, null, null, null, null);
int irow = c.getColumnIndex(colID);
int iuser = c.getColumnIndex(colUsername);
int ipass = c.getColumnIndex(colPassword);
for(c.moveToFirst(); !c.isAfterLast();c.moveToNext() )
{
res = res + c.getString(irow) + " " + c.getString(iuser) + " " + c.getString(ipass) + "\n" ;
}
return res;
}
public String get_texts() {
// TODO Auto-generated method stub
String[] columns = new String[]{ number,message};
SQLiteDatabase bm = this.getReadableDatabase();
String res = " ";
Cursor c = bm.query(Sms_table, columns, null, null, null, null, null);
int inum = c.getColumnIndex(number);
int imessage = c.getColumnIndex(message);
for(c.moveToFirst(); !c.isAfterLast();c.moveToNext() )
{
res = res + c.getString(inum) + " " + c.getString(imessage)+ "\n" ;
}
return res;
}
public void updating_the_table(long id, String user_updating) {
// TODO Auto-generated method stub
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv_update = new ContentValues();
cv_update.put(Database_Helper.colUsername, user_updating);
long test = db.update(Login_Table, cv_update, colID+"="+id, null);
db.close();
}
public String verify_user(String is_user)
{
String verify = " ";
String check = " ";
SQLiteDatabase fg = this.getReadableDatabase();
Cursor c = fg.query(Login_Table, null, null, null, null, null, null);
int iuser = c.getColumnIndex(colUsername);
for(c.moveToFirst() ; !c.isAfterLast();c.moveToNext())
{
verify = c.getString(iuser);
if(is_user.equals(verify))
{
check = "Valid User!";
}
}
return check;
}
}
ここにファイル SmSReceiver.java があります
package com.example.mobile_computing_project;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.gsm.SmsMessage;
import android.util.Log;
import android.widget.Toast;
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.widget.TextView;
public class SmsReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
//---get the SMS message passed in---
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i=0; i<msgs.length; i++){
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
Database_Helper accessing_db = new Database_Helper(SmsReceiver.this);
accessing_db.insert_text(msgs[i].getOriginatingAddress().toString(), msgs[i].getMessageBody().toString());
accessing_db.close();
Log.w("Ho gya!", "Welcome User jee!");
Toast.makeText(context, "New User Has Been Created!!", Toast.LENGTH_SHORT).show();
str += "SMS from " + msgs[i].getOriginatingAddress();
str += " :";
str += msgs[i].getMessageBody().toString();
str += "\n";
}
//---display the new SMS message---
Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
}
}
}
私のプログラムが次の行でエラーを表示する理由がわかりません:
Database_Helper accessing_db = new Database_Helper(SmsReceiver.this);
それはファイル SmsReceiver.java にあります。私がやろうとしているのは、数字とテキストをデータベース テーブル Sms_repository に挿入することだけです。助けてください！