UPDATE: See Complete Application Example Here
Previous Part 1: Android SQLite: Integration.
Part 2: Insert Rows in SQLite Android App
In the previous post we worked on the integration of SQLite then we created Database and Table. Now we will Create a new Activity to insert a new row in Database.
So let’s start
Step 1) Add a button in activity_layout.xml to open a new Activity( InsertRowActivity)
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
tools:context=".MainActivity">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal">
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/insertRow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:onClick="insertRowActivity"
android:text="Insert Row" />
</TableRow>
</TableLayout>
</android.support.constraint.ConstraintLayout>
Now in MainActivity.java define onClick method insertRowActivity
public class MainActivity extends AppCompatActivity {
UsersDatabaseAdapter usersDatabaseAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// create the instance of Databse
usersDatabaseAdapter=new UsersDatabaseAdapter(getApplicationContext());
}
public void insertRowActivity(View view) {
Intent myIntent = new Intent(MainActivity.this, InsertRowActivity.class);
MainActivity.this.startActivity(myIntent);
}
}
In this method, we are just opening InsertRowActivity.
Step 2) Create a new activity ( InsertRowActivity ). Right click on root package > New > Activity > Empty Activity 
InsertRowActivity.java will look like this. I will explain methods in a while.
public class InsertRowActivity extends AppCompatActivity {
private TextView mUserName;
private TextView mUserPhone;
private TextView mUserEmail;
private Button insertRowFrom;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_insert_row);
//Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
insertRowFrom = (Button) findViewById(R.id.insertRowFrom);
mUserName = (TextView) findViewById(R.id.userNameTxt);
mUserPhone = (TextView) findViewById(R.id.userPhoneTxt);
mUserEmail = (TextView) findViewById(R.id.userEmailTxt);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setTitle("Inser New Row in SQLite");
}
}
public void insertRow(View view) {
TextView userNameTxtView = findViewById(R.id.userNameTxt);
TextView userPhoneTxtView = findViewById(R.id.userPhoneTxt);
TextView userEmailTxtView = findViewById(R.id.userEmailTxt);
if(userNameTxtView.getText().toString().trim().equals("")
|| userPhoneTxtView.getText().toString().trim().equals("")
|| userEmailTxtView.getText().toString().trim().equals("")){
toast("Please Fill All Fields ");
}else{
UsersDatabaseAdapter.insertEntry(userNameTxtView.getText().toString().trim(),userPhoneTxtView.getText().toString(),userEmailTxtView.getText().toString());
Intent myIntent = new Intent(InsertRowActivity.this, MainActivity.class);
InsertRowActivity.this.startActivity(myIntent);
}
}
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
}
NOTE: Mostly I use xdroid’s toast in projects you can find installation guide and advantages here
In InsertRowActivity we will have three EditText fields and a Button to get values from EditText and Insert a row in the database.
activity_insert_row.xml will have three EditText to take values from user and a button to save values, it will look like as below
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
tools:context=".InsertRowActivity">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/userNameTxt"
android:layout_width="293dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:hint="User Name"
android:inputType="textPersonName" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/userPhoneTxt"
android:layout_width="289dp"
android:layout_height="53dp"
android:layout_marginBottom="10dp"
android:hint="User Phone"
android:inputType="phone" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/userEmailTxt"
android:layout_width="291dp"
android:layout_height="59dp"
android:layout_marginBottom="10dp"
android:hint="User Email"
android:inputType="textEmailAddress" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/insertRowFrom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="insertRow"
android:text="Insert Row" />
</TableRow>
</TableLayout>
</android.support.constraint.ConstraintLayout>
In UsersDatabaseAdapter.java which we created in the previous post, we will add a new method (insertEntry) to Insert row data in the database and getRowCount to return total rows in the table.
public class UsersDatabaseAdapter {
static final String DATABASE_NAME = "UsersDatabase.db";
static final String TABLE_NAME = "USERS";
static final int DATABASE_VERSION = 1;
// SQL Statement to create a new database.
static final String DATABASE_CREATE = "create table "+TABLE_NAME+"( ID integer primary key autoincrement,user_name text,user_phone text,user_email text); ";
private static final String TAG = "UsersDatabaseAdapter:";
// Variable to hold the database instance
public static SQLiteDatabase db;
// Context of the application using the database.
private final Context context;
// Database open/upgrade helper
private static DataBaseHelper dbHelper;
public UsersDatabaseAdapter(Context _context)
{
context = _context;
dbHelper = new DataBaseHelper(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Method to open the Database
public UsersDatabaseAdapter open() throws SQLException
{
db = dbHelper.getWritableDatabase();
return this;
}
// Method to close the Database
public void close()
{
db.close();
}
// method returns an Instance of the Database
public SQLiteDatabase getDatabaseInstance()
{
return db;
}
// method to insert a record in Table
public static String insertEntry(String user_name, String user_phone, String user_email)
{
try {
ContentValues newValues = new ContentValues();
// Assign values for each column.
newValues.put("user_name", user_name);
newValues.put("user_phone", user_phone);
newValues.put("user_email", user_email);
// Insert the row into your table
db = dbHelper.getWritableDatabase();
long result=db.insert(TABLE_NAME, null, newValues);
toast("User Info Saved! Total Row Count is "+getRowCount());
db.close();
}catch(Exception ex) {
}
return "ok";
}
// method to get the password of userName
public static int getRowCount()
{
db=dbHelper.getReadableDatabase();
Cursor cursor=db.query(TABLE_NAME, null, null, null, null, null, null);
toast("Row Count is "+cursor.getCount());
db.close();
return cursor.getCount();
}
}
Find Source code here
After this our app will be able to insert user data in the database.
Category: Android
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