SQLite数据库问题，无论怎么安装都有问题

本人在实验SQLite数据库，代码在Eclipse上面没问题，一到手机上面安装就有问题，手机是三星自带androi5.0.1系统
代码如下：package com.example.sqltest;
import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity{
Button b,b1;
TextView t1;
myDatabaseHelper myHelp;
SQLiteDatabase mydb=myHelp.getReadableDatabase();
String sql="select * from newsif";
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b=(Button)findViewById(R.id.b);
b1=(Button)findViewById(R.id.b1);
t1=(TextView)findViewById(R.id.text2);
myHelp=new myDatabaseHelper(this,"myDict.db3",1);

b.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        insertData(myHelp.getReadableDatabase(),"1500","2012-12-12");
        Toast.makeText(MainActivity.this, "数据插入成功",Toast.LENGTH_SHORT).show();
    }
});
b1.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        if(myHelp.getReadableDatabase()!=null){
            Toast.makeText(MainActivity.this, "数据库打开或者创建成功", Toast.LENGTH_SHORT).show();
            Cursor cursor=mydb.rawQuery(sql, null);
            String text="";
            while(cursor.moveToFirst())
            {
                text=cursor.getString(cursor.getColumnIndex("data"))+"  "
            +cursor.getString(cursor.getColumnIndex("time"));
            }
            t1.append(text);
        }
    }   
});

}
private void insertData(SQLiteDatabase db ,String word,String detail){

db.execSQL("insert into dict values(?,?)", new String[]{word,detail});

}

@Override
public void onDestroy(){

super.onDestroy();
if(myHelp!=null)
{
    myHelp.close();
}

}
}
错误提示如下