How to Create Sqlite Database with crud Operation (Insert,Update,Delete,Search) in android. |Android App Development With AndroidCource

Sunday, 22 April 2018

How to Create Sqlite Database with crud Operation (Insert,Update,Delete,Search) in android.

Create Simple Contact Demo in Sqlite Database with Insert,Update,Delete And Search Operation.In This Code to How to Create Database in Sqlite And How to Add Delete Update And Search Demo in Android.

Create Database Helper File to Create or Upgrade Database

DatabaseHelper.java


 


package com.example.bhaumik.sqldemo;

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

/**
 * Created by Bhaumik on 5/29/2017.
 */

public class DatabaseHelper extends SQLiteOpenHelper{

    private static final String DATABASE_NAME = "contacts.db";
    private static final String TABLE_NAME = "infos";
    private static final String ID = "ID";
    private static final String NAME = "NAME";
    private static final String EMAIL = "EMAIL";
    private static final String MOBILE_NO = "MOBILENO";

    public DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, 1);

    }

    @Override
    public void onCreate(SQLiteDatabase db) {

        db.execSQL("CREATE TABLE IF NOT EXISTS " + TABLE_NAME + "(" + ID + " INTEGER PRIMARY KEY AUTOINCREMENT ,"
        + NAME + " TEXT, " + EMAIL + " TEXT, " + MOBILE_NO + " TEXT );");

        Log.d("Database : -> ","Database Create/Open...");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS"+ TABLE_NAME);
    }

    public boolean InsertData(String name,String email,String mobile)
    {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues contentValues = new ContentValues();
        contentValues.put(NAME,name);
        contentValues.put(EMAIL,email);
        contentValues.put(MOBILE_NO,mobile);
        long result = db.insert(TABLE_NAME,null,contentValues);

        if(result == -1)
            return false;
        else
            return true;
    }

    public Cursor SearchData(String mobile)
    {
        SQLiteDatabase db = this.getWritableDatabase();

        String query = "SELECT * FROM " + TABLE_NAME + " WHERE " + MOBILE_NO + " = '" + mobile + "'";

        Cursor cursor = db.rawQuery(query,null);

        return cursor;
    }

    public void UpdateData(String mobiles,String name,String email)
    {

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues contentValues = new ContentValues();
        contentValues.put(NAME,name);
        contentValues.put(EMAIL,email);

        db.update(TABLE_NAME,contentValues,MOBILE_NO + " = '" + mobiles + "'",null);

    }

    public void DeleteData(String mobile)
    {
        SQLiteDatabase db = this.getWritableDatabase();

        db.delete(TABLE_NAME , MOBILE_NO + " = '" + mobile + "'",null);

    }
}

Create MainActivity File to Handle Add,Update,Delete And Search Event to Open Another Activity.

MainActivity.xml


	<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"

    android:background="@color/colorAccent"
    tools:context="com.example.bhaumik.sqldemo.MainActivity">


    <Button
        android:id="@+id/btn_add_contact"
        style="@style/ButtonStyle"
        android:text="Add Contacts" />

    <Button
        android:id="@+id/btn_update_contact"
        style="@style/ButtonStyle"
        android:text="Update Contacts" />

    <Button
        android:id="@+id/btn_delete_contact"
        style="@style/ButtonStyle"
        android:text="Delete Contacts" />

    <Button
        android:id="@+id/btn_search_contact"
        style="@style/ButtonStyle"
        android:text="Search Contacts" />

</LinearLayout>

Create Code file to open Actiivity to Add,Update,Delete And Search Button Event.

MainActivity.Java


package com.example.bhaumik.sqldemo;

import android.content.Intent;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import com.crashlytics.android.Crashlytics;
import io.fabric.sdk.android.Fabric;

public class MainActivity extends AppCompatActivity{

    Button add,update,delete,search;

    DatabaseHelper databaseHelper;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Fabric.with(this, new Crashlytics());
        setContentView(R.layout.activity_main);

        databaseHelper = new DatabaseHelper(this);

        init();

        setListener();
    }

    private void init() {

        add = (Button) findViewById(R.id.btn_add_contact);
        update = (Button) findViewById(R.id.btn_update_contact);
        delete = (Button) findViewById(R.id.btn_delete_contact);
        search = (Button) findViewById(R.id.btn_search_contact);

    }

    private void setListener() {

        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Intent intent = new Intent(MainActivity.this,AddContactActivity.class);
                startActivity(intent);
            }
        });

        update.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,UpdateContactActivity.class);
                startActivity(intent);
            }
        });

        delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,DeleteContactActivity.class);
                startActivity(intent);
            }
        });
        search.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,SearchContactActivity.class);
                startActivity(intent );
            }
        });
    }
}

Design For Add,Update,Delete And Search Activity XMl File.To Open Activity when button click event.

addcontact_activity.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/colorPrimary"
    tools:context="com.example.bhaumik.sqldemo.AddContactActivity">

    <EditText
        android:id="@+id/et_name"
        style="@style/EditTextStyle"
        android:textColorHint="@color/WhiteColor"
        android:hint="Enter Name"/>
    <EditText
        android:id="@+id/et_email"
        style="@style/EditTextStyle"
        android:textColorHint="@color/WhiteColor"
        android:hint="Enter Email"/>
    <EditText
        android:id="@+id/et_mobile"
        style="@style/EditTextStyle"
        android:hint="Enter Mobile No"
        android:inputType="phone"
        android:textColorHint="@color/WhiteColor"
        android:imeOptions="actionDone"/>

    <Button
        android:id="@+id/btn_add"
        android:layout_width="250dp"
        android:layout_height="50dp"
        android:text="Add "
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:background="@color/ButtonColor"
        android:textColor="@color/WhiteColor"
        android:textSize="18dp"
        />
</LinearLayout>

updatecontact_activity.xml


 


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.sqldemo.UpdateContactActivity">


    <EditText
        style="@style/EditTextStyle"
        android:id="@+id/et_update_mobile"
        android:hint="Enter Mobile No"
        android:inputType="phone"
        android:textColor="@color/ButtonColor"/>

    <Button
        style="@style/ButtonStyle"
        android:id="@+id/btn_search_updates"
        android:text="Search"/>

    <EditText
        style="@style/EditTextStyle"
        android:id="@+id/et_update_name"
        android:hint="Your Name"
        android:textColor="@color/ButtonColor"/>
    <EditText
        style="@style/EditTextStyle"
        android:id="@+id/et_update_email"
        android:hint="Your Email"
        android:textColor="@color/ButtonColor"/>
    <Button
        style="@style/ButtonStyle"
        android:id="@+id/btn_update"
        android:text="Update"/>
</LinearLayout>

deletecontact_activity.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout   xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.sqldemo.DeleteContactActivity">

    <EditText
        style="@style/EditTextStyle"
        android:id="@+id/et_delete_mobile"
        android:textColor="@color/ButtonColor"/>

    <Button
        style="@style/ButtonStyle"
        android:id="@+id/btn_delete"
        android:text="Delete"/>
</LinearLayout>

searchcontact_activity.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.sqldemo.SearchContactActivity">

    <EditText
       style="@style/EditTextStyle"
        android:id="@+id/et_search_mobile"
        android:hint="Enter Mobile No"
        android:textColor="@color/ButtonColor"
        android:inputType="phone"
        />

    <Button
       style="@style/ButtonStyle"
        android:id="@+id/btn_search"
        android:text="Search"/>

    <TextView
        style="@style/TextViewStyle"
        android:id="@+id/tv_search_name"
        />
    <TextView
       style="@style/TextViewStyle"
        android:id="@+id/tv_search_email"/>
</LinearLayout>

Create Java Code File to Add,Update,Delete And Search Activity.

AddContactActivity.java


package com.example.bhaumik.sqldemo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class AddContactActivity extends AppCompatActivity {

    EditText name,email,mobile;
    Button add;

    DatabaseHelper databaseHelper;

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

        databaseHelper = new DatabaseHelper(this);

        init();

        setListener();

    }

    private void setListener() {

        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                boolean result = databaseHelper.InsertData(name.getText().toString(),email.getText().toString(),mobile.getText().toString());

                if(result)
                {
                    Toast.makeText(AddContactActivity.this,"Contact Inserted Successfully...",Toast.LENGTH_SHORT).show();
                    name.setText("");
                    email.setText("");
                    mobile.setText("");
                }
                else
                {
                    Toast.makeText(AddContactActivity.this,"Failed Contact Inserted...",Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    private void init() {

        name = (EditText) findViewById(R.id.et_name);
        email = (EditText) findViewById(R.id.et_email);
        mobile  = (EditText) findViewById(R.id.et_mobile);
        add = (Button) findViewById(R.id.btn_add);

    }
}

UpdateContactActivity.java


package com.example.bhaumik.sqldemo;

import android.database.Cursor;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class UpdateContactActivity extends AppCompatActivity {

    EditText mobile,name,email;
    Button search,update;

    DatabaseHelper databaseHelper;

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

        databaseHelper = new DatabaseHelper(this);
        init();

        setListener();
    }

    private void setListener() {

        search.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Cursor cursor = databaseHelper.SearchData(mobile.getText().toString());

                while (cursor.moveToNext())
                {
                    name.setText(cursor.getString(1));
                    email.setText(cursor.getString(2));
                }
            }
        });

        update.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                databaseHelper.UpdateData(mobile.getText().toString(),name.getText().toString(),email.getText().toString());

                Toast.makeText(UpdateContactActivity.this,"Contact Updated Successfully..",Toast.LENGTH_SHORT).show();

                mobile.setText("");
                name.setText("");
                email.setText("");

            }
        });


    }

    private void init() {
        mobile = (EditText) findViewById(R.id.et_update_mobile);
        name = (EditText) findViewById(R.id.et_update_name);
        email = (EditText) findViewById(R.id.et_update_email);
        search = (Button) findViewById(R.id.btn_search_updates);
        update = (Button) findViewById(R.id.btn_update);
    }
}

DeleteContactActivity.java


package com.example.bhaumik.sqldemo;

import android.database.Cursor;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class UpdateContactActivity extends AppCompatActivity {

    EditText mobile,name,email;
    Button search,update;

    DatabaseHelper databaseHelper;

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

        databaseHelper = new DatabaseHelper(this);
        init();

        setListener();
    }

    private void setListener() {

        search.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Cursor cursor = databaseHelper.SearchData(mobile.getText().toString());

                while (cursor.moveToNext())
                {
                    name.setText(cursor.getString(1));
                    email.setText(cursor.getString(2));
                }
            }
        });

        update.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                databaseHelper.UpdateData(mobile.getText().toString(),name.getText().toString(),email.getText().toString());

                Toast.makeText(UpdateContactActivity.this,"Contact Updated Successfully..",Toast.LENGTH_SHORT).show();

                mobile.setText("");
                name.setText("");
                email.setText("");

            }
        });


    }

    private void init() {
        mobile = (EditText) findViewById(R.id.et_update_mobile);
        name = (EditText) findViewById(R.id.et_update_name);
        email = (EditText) findViewById(R.id.et_update_email);
        search = (Button) findViewById(R.id.btn_search_updates);
        update = (Button) findViewById(R.id.btn_update);
    }
}

SearchContactActivity.java


package com.example.bhaumik.sqldemo;

import android.database.Cursor;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class SearchContactActivity extends AppCompatActivity {

    EditText mobile;
    TextView name,email;
    Button search;

    DatabaseHelper databaseHelper;

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

        databaseHelper = new DatabaseHelper(this);

        init();

        setListener();
    }

    private void setListener() {

        search.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Cursor cursor = databaseHelper.SearchData(mobile.getText().toString());

                while (cursor.moveToNext())
                {

                    name.setText(cursor.getString(1));
                    email.setText(cursor.getString(2));
                }
            }
        });
    }

    private void init() {

        mobile = (EditText) findViewById(R.id.et_search_mobile);
        name = (TextView) findViewById(R.id.tv_search_name);
        email = (TextView) findViewById(R.id.tv_search_email);
        search = (Button) findViewById(R.id.btn_search);
    }
}


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