Skip to main content

Android database (p2)- SEARCH example

Create a new Android Project named Kamus, where the main activity is Carian Kamus. you may refer the example here…

After the Project has been crated, Add a new class named DBHelper class – right click on the package name –> New –-> Class

sqlite-create-new-dbhelper-class

sqlite-create-new-dbhelper-class-write-class-namePut in the class name (DBHelper)

Create a database, a table and populate preconfigured data in the table. This is coded in the DBHelper class.

package net.kerul.kamus;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DBHelper extends SQLiteOpenHelper {
final protected static String DATABASE_NAME="kamuskerul2";
public DBHelper(Context context) {
super(context, DATABASE_NAME, null,2);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion >= newVersion) return;
db.execSQL("DROP DATABASE IF EXISTS " + DATABASE_NAME +";");
onCreate(db);
}
@Override
public void onCreate(SQLiteDatabase db) {

//here is the database definition
db.execSQL("CREATE TABLE melayuenglish " +
"(katamelayu TEXT, kataeng TEXT);");
//insert pre-configured records
db.execSQL("INSERT INTO melayuenglish (katamelayu, kataeng) VALUES('kereta','car');");
db.execSQL("INSERT INTO melayuenglish (katamelayu, kataeng) VALUES('pukul','hit');");
db.execSQL("INSERT INTO melayuenglish (katamelayu, kataeng) VALUES('duduk','sit');");
db.execSQL("INSERT INTO melayuenglish (katamelayu, kataeng) VALUES('makan','eat');");
db.execSQL("INSERT INTO melayuenglish (katamelayu, kataeng) VALUES('minum','drink');");
}

}



The SEARCH interface – reside in the main activity, which is the Carian Kamus.

interface-db-search-kamus


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".CarianKamus" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="19dp"
android:text="Melayu - English"
android:textAppearance="?android:attr/textAppearanceLarge" />

<EditText
android:id="@+id/txtmelayu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/textView1"
android:ems="10" >

<requestFocus />
</EditText>

<Button
android:id="@+id/btncari"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/txtmelayu"
android:layout_marginTop="21dp"
android:text="Cari makna English" />

<TextView
android:id="@+id/lblmakna"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/btncari"
android:layout_marginTop="17dp"
android:text="Papar makna sini"
android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>


Embedding the SQL SELECT statement


In the Java class file, define all GUIs elements as usual. The search process happen when user key-in a word and hit the button. Currently there are only 4 words; kereta (car), makan (eat), pukul (hit) and duduk (sit).



 

package net.kerul.kamus;

import java.util.ArrayList;

import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class CarianKamus extends Activity implements OnClickListener{
private DBHelper dbhelper = new DBHelper(this);
private SQLiteDatabase db;//the connector
private EditText txtmelayu;
private Button btncari;
private TextView lblmakna;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_carian_kamus);

//listing data processes
//-initiate the database connector
db = dbhelper.getReadableDatabase();

txtmelayu=(EditText)findViewById(R.id.txtmelayu);
btncari=(Button)findViewById(R.id.btncari);
btncari.setOnClickListener(this);
lblmakna=(TextView)findViewById(R.id.lblmakna);
}//end onCreate

public void onClick(View v){
//fetch kata melayu dr textbox
String carimelayu=txtmelayu.getText().toString();
//kena letak dalam onclick
//-run SELECT command to fetch data from table

Cursor cmelayu=db.rawQuery("SELECT * FROM melayuenglish " +
"WHERE katamelayu='"+carimelayu+"';", null);
//-fetch record
if(cmelayu.getCount()!=0){
cmelayu.moveToFirst();//go to first row
String kataenglish=cmelayu.getString(1).toString();
lblmakna.setText(kataenglish);
}
else{
//display some notice here saying no data found
lblmakna.setText("Tiada padanan");
}

}//end onCLick

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_carian_kamus, menu);
return true;
}

//when menu is selected
@Override
public boolean onOptionsItemSelected(MenuItem item) {
//call about screen, if user hit "Tentang kami" menu
if (item.getItemId()==R.id.minsert){
Intent ins= new Intent (this, InsertActivity.class);
startActivity(ins);
}
return true;
}//end menu/

}


Display the search result


Run the app in the emulator, key-in a word and hit the button.


Output sample


display-db-kamus-search-result


Download Source-code here - https://docs.google.com/file/d/0B34ZxOOoeSDdQ3VkWVdaZE43eDg/edit?usp=sharing

Comments

Popular posts from this blog

Several English proverbs and the Malay pair

Or you could download here for the Malay proverbs app – https://play.google.com/store/apps/details?id=net.kerul.peribahasa English proverbs and the Malay pair Corpus Reference: Amir Muslim, 2009. Peribahasa dan ungkapan Inggeris-Melayu. DBP, Kuala Lumpur http://books.google.com.my/books/about/Peribahasa_dan_ungkapan_Inggeris_Melayu.html?id=bgwwQwAACAAJ CTRL+F to search Proverbs in English Definition in English Similar Malay Proverbs Definition in Malay 1 Where there is a country, there are people. A country must have people. Ada air adalah ikan. Ada negeri adalah rakyatnya. 2 Dry bread at home is better than roast meat home's the best hujan emas di negeri orang,hujan batu di negeri sendiri Betapa baik pun tempat orang, baik lagi tempat sendiri. 3 There's no accounting for tastes We can't assume that every people have a same feel Kepala sama hitam hati lain-lain. Dalam kehidupan ini, setiap insan berbeza cara, kesukaan, perangai, tabia

Contact Us at blog.kerul.net

Powered by EMF HTML Contact Form

Login JSON Android using Login Activity

I’ve been trying to release this tutorial quite a while. At last after a long hard effort. Since HttpClient is not supported any more in Android SDK 23, I have to resort to org.json.JSONObject and java.net.HttpURLConnection library to do online database with JSON. The objective of this tutorial is to log-in from a mobile client with the username and password stored in an online database facility. STEP 1: Create a new Android project, this time choose the LoginActivity .

Bootstrap Template for PHP database system - MyCompanyHR

HTML without framework is dull. Doing hard-coded CSS and JS are quite difficult with no promising result on cross platform compatibility. So I decided to explore BootStrap as they said it is the most popular web framework. What is BootStrap? - Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first web sites. (  http://www.w3schools.com/bootstrap/   ) Available here -  http://getbootstrap.com/ Why you need Flat-UI? Seems like a beautiful theme to make my site look professional. Anyway you could get variety of BootStrap theme out there, feel free to select here  http://bootstraphero.com/the-big-badass-list-of-twitter-bootstrap-resources/ Flat-UI is from DesignModo -   http://designmodo.com/flat/ Web Programming MyCompanyHR – PHP & MySQL mini project (with Boostrap HTML framework) Template 1: Template for the Lab Exercise. This is a project sample of a staff record management system. It has the PHP structured co

Pick a file using Intent.ACTION_GET_CONTENT

This tutorial is tested on Honeycomb 3.0 environment. In order to be used it in the lower level of Android API, I believe you could just change the target in the Android project. Screenshots Pick an image file using Intent.ACTION_GET_CONTENT The intention of this project is to choose an image file available in the device storage, and simply display it in an ImageView. The benefit of using Intent.ACTION_GET_CONTENT is you don’t have to develop open dialog box which is not available in the Android library. ACTION_GET_CONTENT with MIME type */* and category CATEGORY_OPENABLE -- Display all pickers for data that can be opened with ContentResolver.openInputStream() , allowing the user to pick one of them and then some data inside of it and returning the resulting URI to the caller. This can be used, for example, image chooser (as shown in this article).