unable to go to home screen

Have Happy Day My Seniors!:(handshake):

My self Raj, i am little familiar with java. But i am new with android os..,


i am facing an problem while create my android application..,

i wants to simple

• insert
• update
• delete
• & search

details in Database..,

while i run and insert the records it showing "insert successfully" response message as i set.

But after that also it staying on the same screen, i have go to app's home option..,


if normally while we develop a swing application we have to inform after action performed which screen have to display..,

in this android have to do anything like that..,

code for InsertActivity..,

Code:

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package com.kancas.search;

import java.io.IOException;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

public class InsertActivity extends Activity {

        Button insertAll;
        Button insertOne;
       
        DatabaseHandler db;
       
        String[] Address = { "Chennai", "Trichy" };
        String[] Catagory={"Computer","Software","Telecommunication"};
       
    @Override
    public void onCreate(Bundle savedInstanceState) {
           
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_insert);
       
        Spinner AddressSpinner = (Spinner) findViewById(R.id.spinner1);
        ArrayAdapter aa = new ArrayAdapter(this,android.R.layout.simple_spinner_item,Address);
        //aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        AddressSpinner.setAdapter(aa);
       
        Spinner CatagorySpunner = (Spinner) findViewById(R.id.spinner2);
            ArrayAdapter aa2 = new ArrayAdapter(this,android.R.layout.simple_spinner_item,Catagory);
        //aa2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        CatagorySpunner.setAdapter(aa2);
       
        db = new DatabaseHandler(this);
       
        insertAll = (Button) findViewById(R.id.button1);
        insertAll.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                    if(db.checkDataBase()){
                            alertbox("Database", "exiset");
                    }
                    else{
                        try {
                                                db.createDataBase();
                                        } catch (IOException e) {
                                                // TODO Auto-generated catch block
                                                e.printStackTrace();
                                        }
                    }
                    db.addData(new Data("John","Chennai","9003574353","x.johnmilton@gmail.com","www.john.com","Computer"));
                    db.addData(new Data("Johnson","Trichy","9791596568","johnson@gmail.com","www.johnson.com","Software"));
                    db.addData(new Data("Yogesh","Chennai","90000000","yogesh@yahoo.com","www.yogesh.com","Telecommunication"));
                    db.addData(new Data("Milton","Trichy","9003574","jaaasas","sadasd","Computer"));
                    db.addData(new Data("aaaa","Chennai","9791596568","x.johnmilton@gmail.com","www.johnson.com","Software"));
                    db.addData(new Data("bbbb","Trichy","9791596568","x.johnmilton@gmail.com","www.johnson.com","Telecommunication"));
                    db.addData(new Data("cccc","Chennai","9791596568","x.johnmilton@gmail.com","www.johnson.com","Computer"));
                    db.addData(new Data("dddd","Trichy","9791596568","x.johnmilton@gmail.com","www.johnson.com","Software"));
                    db.addData(new Data("eeee","Chennai","9791596568","x.johnmilton@gmail.com","www.johnson.com","Telecommunication"));
                    db.addData(new Data("ffff","Trichy","9791596568","x.johnmilton@gmail.com","www.johnson.com","Computer"));
                    db.addData(new Data("gggg","Chennai","9791596568","x.johnmilton@gmail.com","www.johnson.com","Software"));
                    db.addData(new Data("hhhh","Trichy","9791596568","x.johnmilton@gmail.com","www.johnson.com","Telecommunication"));
            }
        });
       
       
        insertOne = (Button) findViewById(R.id.button2);
        insertOne.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                    Data d=new Data();
                    d.setName(((EditText)findViewById(R.id.editText1)).getText().toString());
                    d.setCity(((Spinner)findViewById(R.id.spinner1)).getSelectedItem().toString());
                    d.setPhoneNumber(((EditText)findViewById(R.id.editText3)).getText().toString());
                    d.setEmail(((EditText)findViewById(R.id.editText4)).getText().toString());
                    d.setWeb(((EditText)findViewById(R.id.editText5)).getText().toString());
                    d.setCatagory(((Spinner)findViewById(R.id.spinner2)).getSelectedItem().toString());
                    db.addData(d);
                    Toast.makeText(getApplicationContext(), "Inserted", 3).show();
                    ((EditText)findViewById(R.id.editText1)).setText("");
                    //((EditText)findViewById(R.id.editText2)).setText("");
                    ((EditText)findViewById(R.id.editText3)).setText("");
                    ((EditText)findViewById(R.id.editText4)).setText("");
                    ((EditText)findViewById(R.id.editText5)).setText("");
                   
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_insert, menu);
        return true;
    }
   
    protected void alertbox(String title, String mymessage)
    {
    new AlertDialog.Builder(this)
      .setMessage(mymessage)
      .setTitle(title)
      .setCancelable(true)
      .setNegativeButton(android.R.string.cancel,
          new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int whichButton){}
          })
      .show();
    }
   
   
   
}

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i am looking for your help..,
it will be very help full for develop myself in android..,

Thanking you..,

it is working well thank you..,