Android SQLite ListView with Examples

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  Keywords : Android show the data from sqlite database in listview with examples, Android populating listview using sqlite database with examples

Here we will learn how to populate data in android custom listview from SQLite database with example, how to insert data into sqlite database in android, how to retrieve data from sqlite database and show the data in android listview with examples.  

Android SQLite Database

SQLite is an open source light weight relational database management system (RDBMS) to perform database operations, such as storing, updating, retrieving data from database. To know more about SQLite, check this SQLite Tutorial with Examples.

 

Generally, in our android applications Shared PreferencesInternal Storage and External Storage options are useful to store and maintain the small amount of data. In case, if we want to deal with large amount of data, then SQLite database is the preferable option to store and maintain the data in structured format.

 

To know more about using SQLite Database in android applications, check this Android SQLite Database Tutorial with Examples.

 

Now we will see how to create & insert data into SQLite Database and how to retrieve and show the data in custom listview in android application with examples.

Android SQLite ListView Example

Following is the example of creating the SQLite database, insert and show the details from SQLite database into android listview using SQLiteOpenHelper class.

 

Create a new android application using android studio and give names as SQLiteExample. In case if you are not aware of creating an app in android studio check this article Android Hello World App.

 

Once we create an application, create a class file DbHandler.java in \java\com.tutlane.sqliteexample path to implement SQLite database related activities for that right click on your application folder à Go to New à select Java Class and give name as DbHandler.java.

 

Once we create a new class file DbHandler.java, open it and write the code like as shown below

DbHandler.java

package com.tutlane.sqliteexample;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import java.util.ArrayList;
import java.util.HashMap;

/**
 * Created by tutlane on 06-01-2018.
 */

public class DbHandler extends SQLiteOpenHelper {
   
private static final int DB_VERSION = 1;
   
private static final String DB_NAME = "usersdb";
   
private static final String TABLE_Users = "userdetails";
   
private static final String KEY_ID = "id";
   
private static final String KEY_NAME = "name";
   
private static final String KEY_LOC = "location";
   
private static final String KEY_DESG = "designation";
   
public DbHandler(Context context){
       
super(context,DB_NAME, null, DB_VERSION);
    }
   
@Override
   
public void onCreate(SQLiteDatabase db){
        String CREATE_TABLE =
"CREATE TABLE " + TABLE_Users + "("
               
+ KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME + " TEXT,"
               
+ KEY_LOC + " TEXT,"
               
+ KEY_DESG + " TEXT"+ ")";
        db.execSQL(CREATE_TABLE);
    }
   
@Override
   
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion){
       
// Drop older table if exist
       
db.execSQL("DROP TABLE IF EXISTS " + TABLE_Users);
       
// Create tables again
       
onCreate(db);
    }
   
// **** CRUD (Create, Read, Update, Delete) Operations ***** //

    // Adding new User Details
   
void insertUserDetails(String name, String location, String designation){
       
//Get the Data Repository in write mode
       
SQLiteDatabase db = this.getWritableDatabase();
       
//Create a new map of values, where column names are the keys
       
ContentValues cValues = new ContentValues();
        cValues.put(
KEY_NAME, name);
        cValues.put(
KEY_LOC, location);
        cValues.put(
KEY_DESG, designation);
       
// Insert the new row, returning the primary key value of the new row
       
long newRowId = db.insert(TABLE_Users,null, cValues);
        db.close();
    }
   
// Get User Details
   
public ArrayList<HashMap<String, String>> GetUsers(){
        SQLiteDatabase db =
this.getWritableDatabase();
        ArrayList<HashMap<String, String>> userList =
new ArrayList<>();
        String query =
"SELECT name, location, designation FROM "+ TABLE_Users;
        Cursor cursor = db.rawQuery(query,
null);
       
while (cursor.moveToNext()){
            HashMap<String,String> user =
new HashMap<>();
            user.put(
"name",cursor.getString(cursor.getColumnIndex(KEY_NAME)));
            user.put(
"designation",cursor.getString(cursor.getColumnIndex(KEY_DESG)));
            user.put(
"location",cursor.getString(cursor.getColumnIndex(KEY_LOC)));
            userList.add(user);
        }
       
return  userList;
    }
   
// Get User Details based on userid
   
public ArrayList<HashMap<String, String>> GetUserByUserId(int userid){
        SQLiteDatabase db =
this.getWritableDatabase();
        ArrayList<HashMap<String, String>> userList =
new ArrayList<>();
        String query =
"SELECT name, location, designation FROM "+ TABLE_Users;
        Cursor cursor = db.query(
TABLE_Users, new String[]{KEY_NAME, KEY_LOC, KEY_DESG}, KEY_ID+ "=?",new String[]{String.valueOf(userid)},null, null, null, null);
       
if (cursor.moveToNext()){
            HashMap<String,String> user =
new HashMap<>();
            user.put(
"name",cursor.getString(cursor.getColumnIndex(KEY_NAME)));
            user.put(
"designation",cursor.getString(cursor.getColumnIndex(KEY_DESG)));
            user.put(
"location",cursor.getString(cursor.getColumnIndex(KEY_LOC)));
            userList.add(user);
        }
       
return  userList;
    }
   
// Delete User Details
   
public void DeleteUser(int userid){
        SQLiteDatabase db =
this.getWritableDatabase();
        db.delete(
TABLE_Users, KEY_ID+" = ?",new String[]{String.valueOf(userid)});
        db.close();
    }
   
// Update User Details
   
public int UpdateUserDetails(String location, String designation, int id){
        SQLiteDatabase db =
this.getWritableDatabase();
        ContentValues cVals =
new ContentValues();
        cVals.put(
KEY_LOC, location);
        cVals.put(
KEY_DESG, designation);
       
int count = db.update(TABLE_Users, cVals, KEY_ID+" = ?",new String[]{String.valueOf(id)});
       
return  count;
    }
}

If you observe above code, we implemented all SQLite Database related activities to perform CRUD operations in android application.

 

Now open activity_main.xml file from \res\layout folder path and write the code like as shown below.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   
android:orientation="vertical" android:layout_width="match_parent"
   
android:layout_height="match_parent">
    <
TextView
       
android:id="@+id/fstTxt"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_marginLeft="100dp"
       
android:layout_marginTop="150dp"
       
android:text="Name" />
    <
EditText
       
android:id="@+id/txtName"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_marginLeft="100dp"
       
android:ems="10"/>
    <
TextView
       
android:id="@+id/secTxt"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:text="Location"
       
android:layout_marginLeft="100dp" />
    <
EditText
       
android:id="@+id/txtLocation"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_marginLeft="100dp"
       
android:ems="10" />
    <
TextView
       
android:id="@+id/thirdTxt"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:text="Designation"
       
android:layout_marginLeft="100dp" />
    <
EditText
       
android:id="@+id/txtDesignation"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_marginLeft="100dp"
       
android:ems="10" />
    <
Button
       
android:id="@+id/btnSave"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_marginLeft="100dp"
       
android:text="Save" />
</
LinearLayout>

Now we will create another layout resource file details.xml in \res\layout path to show the details in custom listview from SQLite Database for that right click on your layout folder à Go to New à select Layout Resource File and give name as details.xml.

 

Once we create a new layout resource file details.xml, open it and write the code like as shown below

details.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   
android:layout_width="fill_parent"
   
android:layout_height="fill_parent"
   
android:orientation="vertical" >
    <
ListView
       
android:id="@+id/user_list"
       
android:layout_width="fill_parent"
       
android:layout_height="wrap_content"
       
android:dividerHeight="1dp" />
    <
Button
       
android:id="@+id/btnBack"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_gravity="center"
       
android:layout_marginTop="20dp"
       
android:text="Back" />
</
LinearLayout>

Create an another layout file (list_row.xml) in /res/layout folder to show the data in listview, for that right click on layout folder à add new Layout resource file à Give name as list_row.xml and write the code like as shown below.

list_row.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   
android:layout_width="fill_parent"
   
android:layout_height="wrap_content"
   
android:orientation="horizontal"
   
android:padding="5dip" >
    <
TextView
       
android:id="@+id/name"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:textStyle="bold"
       
android:textSize="17dp" />
    <
TextView
       
android:id="@+id/designation"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_below="@id/name"
       
android:layout_marginTop="7dp"
       
android:textColor="#343434"
       
android:textSize="14dp" />
    <
TextView
       
android:id="@+id/location"
       
android:layout_width="wrap_content"
       
android:layout_height="wrap_content"
       
android:layout_alignBaseline="@+id/designation"
       
android:layout_alignBottom="@+id/designation"
       
android:layout_alignParentRight="true"
       
android:textColor="#343434"
       
android:textSize="14dp" />
</
RelativeLayout>

Now open your main activity file MainActivity.java from \java\com.tutlane.sqliteexample path and write the code like as shown below

MainActivity.java

package com.tutlane.sqliteexample;
import android.content.Intent;
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 MainActivity extends AppCompatActivity {
    EditText
name, loc, desig;
    Button
saveBtn;
    Intent
intent;
   
@Override
   
protected void onCreate(Bundle savedInstanceState) {
       
super.onCreate(savedInstanceState);
        setContentView(R.layout.
activity_main);
        
name = (EditText)findViewById(R.id.txtName);
       
loc = (EditText)findViewById(R.id.txtLocation);
       
desig = (EditText)findViewById(R.id.txtDesignation);
       
saveBtn = (Button)findViewById(R.id.btnSave);
       
saveBtn.setOnClickListener(new View.OnClickListener() {
           
@Override
           
public void onClick(View v) {
                String username =
name.getText().toString()+"\n";
                String location =
loc.getText().toString();
                String designation =
desig.getText().toString();
                DbHandler dbHandler =
new DbHandler(MainActivity.this);
                dbHandler.insertUserDetails(username,location,designation);
               
intent = new Intent(MainActivity.this,DetailsActivity.class);
                startActivity(
intent);
                Toast.makeText(getApplicationContext(),
"Details Inserted Successfully",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

If you observe above code, we are taking entered user details and inserting into SQLite database and redirecting the user to another activity.

 

Now we will create another activity file DetailsActivity.java in \java\com.tutlane.sqliteexample path to show the details from SQLite database for that right click on your application folder à Go to New à select Java Class and give name as DetailsActivity.java.

 

Once we create a new activity file DetailsActivity.java, open it and write the code like as shown below

DetailsActivity.java

package com.tutlane.sqliteexample;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import java.util.ArrayList;
import java.util.HashMap;

/**
 * Created by tutlane on 05-01-2018.
 */

public class DetailsActivity extends AppCompatActivity {
    Intent
intent;
   
@Override
   
protected void onCreate(Bundle savedInstanceState) {
       
super.onCreate(savedInstanceState);
        setContentView(R.layout.
details);
        DbHandler db =
new DbHandler(this);
        ArrayList<HashMap<String, String>> userList = db.GetUsers();
        ListView lv = (ListView) findViewById(R.id.
user_list);
        ListAdapter adapter =
new SimpleAdapter(DetailsActivity.this, userList, R.layout.list_row,new String[]{"name","designation","location"}, new int[]{R.id.name, R.id.designation, R.id.location});
        lv.setAdapter(adapter);
        Button back = (Button)findViewById(R.id.
btnBack);
        back.setOnClickListener(
new View.OnClickListener() {
           
@Override
           
public void onClick(View v) {
               
intent = new Intent(DetailsActivity.this,MainActivity.class);
                startActivity(
intent);
            }
        });
    }
}

If you observe above code, we are getting the details from SQLite database and binding the details to android listview. Now we need to add this newly created activity in AndroidManifest.xml file in like as shown below.

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   
package="com.tutlane.sqliteexample">
    <
application
       
android:allowBackup="true"
       
android:icon="@mipmap/ic_launcher"
       
android:label="@string/app_name"
       
android:roundIcon="@mipmap/ic_launcher_round"
       
android:supportsRtl="true"
       
android:theme="@style/AppTheme">
        <
activity android:name=".MainActivity">
            <
intent-filter>
                <
action android:name="android.intent.action.MAIN" />
                <
category android:name="android.intent.category.LAUNCHER" />
            </
intent-filter>
        </
activity>
        <
activity android:name=".DetailsActivity" android:label="SQLite Example - Details"></activity>
    </
application>
</
manifest>

If you observe above example, we are saving entered details in SQLite database and redirecting the user to another activity file (DetailsActivity.java) to show the users details and added all the activities in AndroidManifest.xml file.

Output of Android SQLite ListView Example

When we run above example in android emulator we will get a result like as shown below.

 

Android Bind Data to Listview from SQLite Example Result

 

If you observe above result, the entered user details are storing in SQLite database and redirecting the user to another activity file to show the user details from SQLite Database in listview. After that, if we click on Back button, it will redirect user to login page.

 

This is how we can get the data from SQLite database and bind it to custom listview in android applications based on our requirements.

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