ทำตาม Android + SQLite แล้ว ไม่สามารรันได้ ติดตรง insert ข้อมูล เกี่ยวกับตัวแปร Toast

package com.example.mydatabaseapp;


import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.app.Activity;
import android.database.sqlite.SQLiteDatabase;

public class MainActivity extends Activity {
	
	SQLiteDatabase db;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		myDBClass myDb = new myDBClass(this);
		myDb.getWritableDatabase(); // First method
				
	}
	final myDBClass myDb1 = new myDBClass(this);

	// Button1 (Insert)
	      final Button btn1 = (Button) findViewById(R.id.button1);
	      // Perform action on click
	      btn1.setOnClickListener(new View.OnClickListener() {
	          public void onClick(View v) {
	          	
	          	// Statement 1
	          	long flg1 = myDb1.InsertData("1","Weerachai", "0819876107");
	          	if(flg1 > 0)
	          	{
	          	 Toast.makeText(MainActivity.this,"Insert(1) Data Successfully",
	          			 	Toast.LENGTH_LONG).show(); 
	          	}
	          	else
	          	{
	             	 Toast.makeText(MainActivity.this,"Insert(1) Data Failed.",
	       			 	Toast.LENGTH_LONG).show(); 
	          	}
	          	
	          	// Statement 2
	          	long flg2 = myDb1.InsertData("2","Win", "021978032");
	          	if(flg2 > 0)
	          	{
	          	 Toast.makeText(MainActivity.this,"Insert(2) Data Successfully",
	          			 	Toast.LENGTH_LONG).show(); 
	          	}
	          	else
	          	{
	             	 Toast.makeText(MainActivity.this,"Insert(2) Data Failed.",
	       			 	Toast.LENGTH_LONG).show(); 
	          	}
	          }
	      });


}