How i insert intent method to this code for when click button it will show second activity

Question

Here is the java activity that provide to add data for record in SQLite. My question is how i insert some code for when clicking button and it will show second activity. i don't know where i should insert. And don't know what the code should be. please help me.

import java.sql.PreparedStatement;

import android.app.Activity;
import android.content.Intent;
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.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class AddStudent extends Activity {
DatabaseStudent mHelper;
SQLiteDatabase mDb;


public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.add);

    mHelper = new DatabaseStudent(this);
    mDb = mHelper.getWritableDatabase();

    final EditText editName = (EditText)findViewById(R.id.editName);
    final EditText editLastName = (EditText)findViewById(R.id.editLastName);


    ImageView buttonAdd = (ImageView)findViewById(R.id.imageAdd);

    buttonAdd.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            String name = editName.getText().toString();
            String lastname = editLastName.getText().toString();
            String condition = getIntent().getStringExtra("Condition");
            double school = getIntent().getDoubleExtra("Intent", 0);

            //Date&Time
            java.util.Date dt = new java.util.Date();
            java.text.SimpleDateFormat sdf = 
                 new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            String currentTime = sdf.format(dt);

            if(name.length() != 0 && lastname.length() != 0 
                     ) {//&& school.length() != 0

                Cursor mCursor = mDb.rawQuery("SELECT * FROM " 
                        + DatabaseStudent.TABLE_NAME + " WHERE " 
                        + DatabaseStudent.COL_NAME + "='" + name + "'" 
                        + " AND " + DatabaseStudent.COL_LASTNAME + "='" 
                        + lastname + "'" + " AND " 
                        + DatabaseStudent.COL_SCHOOL + "='" + school //add COL_SCHOOL = currentTime
                        + "'"+ " AND " + DatabaseStudent.COL_TIME + "='" + currentTime
                        + "'"+ " AND " + DatabaseStudent.COL_CON + "='" + condition
                        + "'", null);

                if(mCursor.getCount() == 0) {
                    mDb.execSQL("INSERT INTO " + DatabaseStudent.TABLE_NAME 
                            + " (" + DatabaseStudent.COL_NAME 
                            + ", " + DatabaseStudent.COL_LASTNAME 
                            + ", " + DatabaseStudent.COL_SCHOOL 
                            + ", " + DatabaseStudent.COL_TIME 
                            + ", " + DatabaseStudent.COL_CON 
                            + ") VALUES ('" + name + "', '" + lastname 
                            + "', '" + school + "', '" + currentTime + "', '" + condition + "');");



                    editName.setText("");
                    editLastName.setText("");


                    Toast.makeText(getApplicationContext()
                            , "Already added"
                            , Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(getApplicationContext()
                            , "This data is exist"
                            , Toast.LENGTH_SHORT).show();
                }

            } else {
                Toast.makeText(getApplicationContext()
                        , "Please fill in the blank"
                        , Toast.LENGTH_SHORT).show();
            }
        }
    });

}

public void onStop() {
    super.onStop();
    mHelper.close();
    mDb.close();
}

}

Answer 1

You'd want to insert any code you want executed when you hit a button in the onClick method, which you have as seen here:

buttonAdd.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {

    // do stuff when buttonAdd is clicked

    }
});

Now you can use intents inside the onClick method to begin a second activity, like so:

buttonAdd.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {

        Intent intent = new Intent(current_activity.this, second_activity.class);
        startActivity(intent);
    }
});

You can consult the following for more details: http://developer.android.com/training/basics/firstapp/starting-activity.html