不幸的是申请已停止

Question

我正在尝试运行此应用程序，并且每当我启动它时，它会发出错误（应用程序名称）已停止！

这是我的活动MainActivity.java的图片

package com.frns.salehnew;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
 import android.view.View.OnClickListener;


public class MainActivity extends Activity {
	EditText id;
	EditText password;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		 Button bt = (Button) findViewById(R.id.button1);
		 id = (EditText)findViewById(R.id.tvId);
			password = (EditText)findViewById(R.id.tvPassword);
		 bt.setOnClickListener(myhandler1);
		 }
		 
	View.OnClickListener myhandler1 = new OnClickListener() {
		
		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			Integer i = Integer.parseInt( id.getText().toString());
			
			DBHelper mydb = new DBHelper(getApplicationContext());
			Boolean check = mydb.CheckValidUser( i , password.getText().toString());
			
			if( check )
			{
				Toast.makeText(getApplicationContext(), "welcome", Toast.LENGTH_LONG);
			}
			else 
			{ 
				Toast.makeText(getApplicationContext(), "wrong id or password", Toast.LENGTH_LONG);
			}
		}
	};

		
}	
		
		
		
		
		
	

这是activity_main.xml

的图片

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="top"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="158dp"
        android:text="Submit" />

    <TextView
        android:id="@+id/tvId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/button1"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="98dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/tvPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/tvId"
        android:layout_alignLeft="@+id/button1"
        android:layout_marginBottom="56dp"
        android:text="TextView" />

</RelativeLayout>

这是我的活动DBhelper.java的图片

package com.frns.salehnew;

import java.security.PublicKey;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteDatabase;

public class DBHelper extends SQLiteOpenHelper {

   public static final String DATABASE_NAME = "MyDBName.db";
   public static final String CONTACTS_TABLE_NAME = "tblusers";
   public static final String CONTACTS_COLUMN_ID = "id";
   public static final String CONTACTS_COLUMN_PASSWORD = "password";
   public static final String CONTACTS_COLUMN_FNAME = "fname";
   public static final String CONTACTS_COLUMN_lNAME = "lname";
   public static final String CONTACTS_COLUMN_EMAIL = "email";
   
   private HashMap hp;

   public DBHelper(Context context)
   {
      super(context, DATABASE_NAME , null, 1);
   }

   @Override
   public void onCreate(SQLiteDatabase db) {
      // TODO Auto-generated method stub
      db.execSQL(
      "create table tblusers " +
      "(id integer primary key, password text,fname text,lname text, email text)"
      );
   }

   @Override
   public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
      // TODO Auto-generated method stub
      db.execSQL("DROP TABLE IF EXISTS tblusers");
      onCreate(db);
   }

  
   
   
   public boolean CheckValidUser (Integer id, String password)
   {
	   SQLiteDatabase db = this.getReadableDatabase();
   Cursor Res = db.rawQuery("select * from tblusers where id ="+id+"", null);
   if( Res ==null)
   {
	   return false;
   }
   else 
   {
	   Res.moveToFirst();
   String p = Res.getString(Res.getColumnIndex(CONTACTS_COLUMN_PASSWORD));
   if( p == password )
     {
	   return true;
     }
   } 
   return false;
   }
  
   
   }

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.frns.salehnew"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="22" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".DBHelper"
            android:label="@string/title_activity_dbhelper" >
        </activity>
    </application>

</manifest>

can anyone tell me why the "unfortunately application has stopped" error ?