Android เส้นแดงๆในโค๊ดจาวาตัวนี้มันคือออะไรคับ เกี่ยวกับการที่โปรแกรมรันผ่านแต่ไม่แสดงดาต้าเบสรึปาวคับ

package com.coderefer.thaicreate;




        import android.os.Bundle;
        import android.view.View;
        import android.widget.AdapterView;
        import android.widget.AdapterView.OnItemClickListener;
        import android.widget.ListView;
        import android.widget.SimpleCursorAdapter;
        import android.app.Activity;
        import android.database.Cursor;
        import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // get Data from SQLite
        final myDBClass myDb = new myDBClass(this);
        final Cursor myData = myDb.SelectAllData();

        // listView1
        ListView lisView1 = (ListView)findViewById(R.id.listView1);

        SimpleCursorAdapter adapter;
        adapter = new SimpleCursorAdapter(MainActivity.this, R.layout.activity_column, myData
                ,new String[] {"MemberID","Name","Tel"}
                ,new int[] {R.id.ColMemberID, R.id.ColName, R.id.ColTel});

        lisView1.setAdapter(adapter);

        // OnClick Item
        lisView1.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> myAdapter, View myView, int position, long mylng) {

                String MemberID = myData.getString(myData.getColumnIndex("MemberID"));
                Toast.makeText(getApplicationContext(),
                        "Selected MemberID : " + MemberID, Toast.LENGTH_SHORT).show();

            }
        });


    }


}

package com.coderefer.thaicreate;

/**
 * Created by Administrator on 12/1/2559.
 */



        import android.content.Context;
        import android.database.Cursor;
        import android.database.sqlite.SQLiteDatabase;
        import android.database.sqlite.SQLiteOpenHelper;
        import android.util.Log;

public class myDBClass extends SQLiteOpenHelper {


    // Database Version
    private static final int DATABASE_VERSION = 1;

    // Database Name
    private static final String DATABASE_NAME = "mydatabase";

    // Table Name
    private static final String TABLE_MEMBER = "members";

    public myDBClass(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        // TODO Auto-generated constructor stub
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        // Create Table Name
        db.execSQL("CREATE TABLE " + TABLE_MEMBER +
                "(MemberID INTEGER PRIMARY KEY AUTOINCREMENT," +
                " Name TEXT(100)," +
                " Tel TEXT(100));");

        Log.d("CREATE TABLE","Create Table Successfully.");
    }

    // Select All Data
    public Cursor SelectAllData() {
        // TODO Auto-generated method stub

        try {
            SQLiteDatabase db;
            db = this.getReadableDatabase(); // Read Data

            String strSQL = "SELECT  MemberID As _id , * FROM " + TABLE_MEMBER;
            Cursor cursor = db.rawQuery(strSQL, null);

            return cursor;

        } catch (Exception e) {
            return null;
        }

    }

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

        // Re Create on method  onCreate
        onCreate(db);
    }

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/ColMemberID"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="MemberID"/>

    <TextView
        android:id="@+id/ColName"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="2"
        android:text="Name"/>

    <TextView
        android:id="@+id/ColTel"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Tel" />

</LinearLayout>