Sqlite database use to store the application data. sqlite is a lightweight database
Screenshot
Resource file
value
color.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <color name="colorPrimary">#3b5998</color> <color name="colorPrimaryDark">#3b5998</color> <color name="colorAccent">#3b5998</color> <color name="lavender">#3b5998</color> <color name="white">#FFFFFF</color> <color name="login_button">#D81B60</color> </resources>
strings.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">Login</string> <string name="email">Email</string> <string name="login">Login</string> <string name="name">Name</string> <string name="password">Password</string> <string name="phone">Phone number</string> <string name="register">Register</string> <string name="user_login">User Login</string> <string name="please_enter_name">please enter name</string> <string name="please_enter_email">please enter email</string> <string name="please_enter_password">please enter password</string> <string name="please_enter_phone">please enter phone number</string> <string name="loading">Loading....</string> <string name="ok">OK</string> <string name="register_success">Register success fully</string> <string name="email_id_use">Email id already use</string> <string name="fail">Login Fail</string> <string name="update">Update</string> <string name="logout">Logout</string> <string name="update_user">Update User</string> </resources>
styles.xml
<resources> <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> </style> </resources>
drawable file
edittext_bg.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape android:shape="rectangle"> <stroke android:width="1dp" android:color="@color/white" /> <corners android:radius="20dp" /> </shape> </item> </selector>
login_button_bg.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape android:shape="rectangle"> <solid android:color="@color/white" /> <corners android:radius="40dp" /> </shape> </item> </selector>
layout file
activity_login.xml
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/lavender" android:fillViewport="true"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/lavender" android:gravity="center" android:orientation="vertical" tools:context=".Activity.Login"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="@string/login" android:textColor="@color/white" android:textSize="32sp" android:textStyle="bold" /> <EditText android:id="@+id/editText_email_login" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="40dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/email" android:inputType="textEmailAddress" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_password_login" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/password" android:inputType="textPassword" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:orientation="horizontal"> <Button android:id="@+id/button_login" android:layout_width="120dp" android:layout_height="40dp" android:layout_marginTop="20dp" android:background="@drawable/login_button_bg" android:text="@string/login" android:textColor="@color/login_button" android:textStyle="bold" /> <Button android:id="@+id/button_reg_login" android:layout_width="120dp" android:layout_height="40dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:background="@drawable/login_button_bg" android:text="@string/register" android:textColor="@color/login_button" android:textStyle="bold" /> </LinearLayout> </LinearLayout> </ScrollView>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:orientation="vertical" tools:context=".Activity.MainActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginStart="10dp" android:layout_marginTop="40dp" android:layout_marginEnd="10dp" android:orientation="vertical"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" android:textSize="18sp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="10dp" android:layout_marginEnd="10dp" android:text=":-" android:textSize="18sp" /> <TextView android:id="@+id/textView_name_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" android:textSize="18sp" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/email" android:textSize="18sp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="10dp" android:layout_marginEnd="10dp" android:text=":-" android:textSize="18sp" /> <TextView android:id="@+id/textView_email_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" android:textSize="18sp" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/phone" android:textSize="18sp" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="10dp" android:layout_marginEnd="10dp" android:text=":-" android:textSize="18sp" /> <TextView android:id="@+id/textView_phone_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" android:textSize="18sp" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginTop="20dp" android:orientation="horizontal"> <Button android:id="@+id/button_update_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/update" /> <Button android:id="@+id/button_logout_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="5dp" android:text="@string/logout" /> </LinearLayout> </LinearLayout> </RelativeLayout>
activity_register.xml
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/lavender" android:fillViewport="true"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" tools:context=".Activity.Register"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="@string/register" android:textColor="@color/white" android:textSize="32sp" android:textStyle="bold" /> <EditText android:id="@+id/editText_name_reg" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="50dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/name" android:inputType="text" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_email_reg" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/email" android:inputType="textEmailAddress" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_password_reg" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/password" android:inputType="textPassword" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_phone_reg" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/phone" android:inputType="phone" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <Button android:id="@+id/button_reg" android:layout_width="120dp" android:layout_height="40dp" android:layout_gravity="center" android:layout_marginTop="40dp" android:layout_marginBottom="40dp" android:background="@drawable/login_button_bg" android:text="@string/register" android:textColor="@color/login_button" android:textStyle="bold" /> </LinearLayout> </ScrollView>
activity_update_user.xml
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/lavender" android:fillViewport="true"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" tools:context=".Activity.UpdateUser"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="@string/update_user" android:textColor="@color/white" android:textSize="32sp" android:textStyle="bold" /> <EditText android:id="@+id/editText_name_update" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="50dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/name" android:inputType="text" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_email_update" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/email" android:inputType="textEmailAddress" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_password_update" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/password" android:inputType="textPassword" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <EditText android:id="@+id/editText_phone_update" android:layout_width="match_parent" android:layout_height="50dp" android:layout_marginStart="20dp" android:layout_marginTop="20dp" android:layout_marginEnd="20dp" android:background="@drawable/edittext_bg" android:hint="@string/phone" android:inputType="phone" android:paddingStart="10dp" android:paddingEnd="10dp" android:singleLine="true" android:textColor="@color/white" android:textColorHint="@color/white" android:textCursorDrawable="@null" /> <Button android:id="@+id/button_update" android:layout_width="120dp" android:layout_height="40dp" android:layout_gravity="center" android:layout_marginTop="40dp" android:layout_marginBottom="40dp" android:background="@drawable/login_button_bg" android:text="@string/update" android:textColor="@color/login_button" android:textStyle="bold" /> </LinearLayout> </ScrollView>
AndroidManifest file
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.app.databaseloginregister"> <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=".Activity.Login"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".Activity.Register" /> <activity android:name=".Activity.UpdateUser" /> <activity android:name=".Activity.MainActivity" /> </application> </manifest>
Java Code
Login.java
package com.app.databaseloginregister.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import com.app.databaseloginregister.DataBase.DatabaseHandler;
import com.app.databaseloginregister.R;
import com.app.databaseloginregister.Util.Method;
public class Login extends AppCompatActivity {
private Method method;
private DatabaseHandler db;
private String email, password;
private EditText editText_email, editText_password;
private Button button_reg, button_login;
private InputMethodManager imm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
method = new Method(Login.this);
db = new DatabaseHandler(Login.this);
imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
if (method.pref.getBoolean(method.pref_login, false)) {
String id = method.pref.getString(method.profileId, null);
startActivity(new Intent(Login.this, MainActivity.class)
.putExtra("id", id));
finishAffinity();
}
editText_email = findViewById(R.id.editText_email_login);
editText_password = findViewById(R.id.editText_password_login);
button_login = findViewById(R.id.button_login);
button_reg = findViewById(R.id.button_reg_login);
button_login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
email = editText_email.getText().toString();
password = editText_password.getText().toString();
editText_email.clearFocus();
editText_password.clearFocus();
imm.hideSoftInputFromWindow(editText_email.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_password.getWindowToken(), 0);
login();
}
});
button_reg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Login.this, Register.class));
}
});
}
private void login() {
editText_email.setError(null);
editText_password.setError(null);
if (!isValidMail(email) || email.isEmpty()) {
editText_email.requestFocus();
editText_email.setError(getResources().getString(R.string.please_enter_email));
} else if (password.isEmpty()) {
editText_password.requestFocus();
editText_password.setError(getResources().getString(R.string.please_enter_password));
} else {
if (!db.checkLogin(email, password)) {
String id = db.getUserId(email);
if (id != null) {
startActivity(new Intent(Login.this, MainActivity.class)
.putExtra("id", id));
finishAffinity();
method.editor.putBoolean(method.pref_login, true);
method.editor.putString(method.profileId, id);
method.editor.commit();
}
} else {
method.alertBox(getResources().getString(R.string.fail));
}
}
}
private boolean isValidMail(String email) {
return android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();
}
}
MainActivity.java
package com.app.databaseloginregister.Activity;
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.TextView;
import com.app.databaseloginregister.DataBase.DatabaseHandler;
import com.app.databaseloginregister.Item.UserList;
import com.app.databaseloginregister.R;
import com.app.databaseloginregister.Util.Method;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private String id;
private Method method;
private DatabaseHandler db;
private List userLists;
private Button button_update, button_logout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
id = getIntent().getStringExtra("id");
method = new Method(MainActivity.this);
userLists = new ArrayList<>();
db = new DatabaseHandler(MainActivity.this);
userLists = db.getUser(id);
TextView textView_name = findViewById(R.id.textView_name_main);
TextView textView_email = findViewById(R.id.textView_email_main);
TextView textView_phoneNo = findViewById(R.id.textView_phone_main);
button_update = findViewById(R.id.button_update_main);
button_logout = findViewById(R.id.button_logout_main);
if (userLists.size() != 0) {
textView_name.setText(userLists.get(0).getName());
textView_email.setText(userLists.get(0).getEmail());
textView_phoneNo.setText(userLists.get(0).getPhone());
}
button_update.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, UpdateUser.class)
.putExtra("id", id)
.putExtra("name", userLists.get(0).getName())
.putExtra("email", userLists.get(0).getEmail())
.putExtra("phone", userLists.get(0).getPhone()));
}
});
button_logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
method.editor.putBoolean(method.pref_login, false);
method.editor.commit();
startActivity(new Intent(MainActivity.this, Login.class));
finishAffinity();
}
});
}
}
Register.java
package com.app.databaseloginregister.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import com.app.databaseloginregister.DataBase.DatabaseHandler;
import com.app.databaseloginregister.R;
import com.app.databaseloginregister.Util.Method;
public class Register extends AppCompatActivity {
private Method method;
private DatabaseHandler db;
private Button button_register;
private InputMethodManager imm;
private String name, email, password, phoneNo;
private EditText editText_name, editText_email, editText_password, editText_phoneNo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
method = new Method(Register.this);
db = new DatabaseHandler(Register.this);
imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
editText_name = findViewById(R.id.editText_name_reg);
editText_email = findViewById(R.id.editText_email_reg);
editText_password = findViewById(R.id.editText_password_reg);
editText_phoneNo = findViewById(R.id.editText_phone_reg);
button_register = findViewById(R.id.button_reg);
button_register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
name = editText_name.getText().toString();
email = editText_email.getText().toString();
password = editText_password.getText().toString();
phoneNo = editText_phoneNo.getText().toString();
editText_name.clearFocus();
editText_email.clearFocus();
editText_password.clearFocus();
editText_phoneNo.clearFocus();
imm.hideSoftInputFromWindow(editText_name.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_email.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_password.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_phoneNo.getWindowToken(), 0);
form();
}
});
}
private boolean isValidMail(String email) {
return android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();
}
private void form() {
editText_name.setError(null);
editText_email.setError(null);
editText_password.setError(null);
editText_phoneNo.setError(null);
if (name.equals("") || name.isEmpty()) {
editText_name.requestFocus();
editText_name.setError(getResources().getString(R.string.please_enter_name));
} else if (!isValidMail(email) || email.isEmpty()) {
editText_email.requestFocus();
editText_email.setError(getResources().getString(R.string.please_enter_email));
} else if (password.equals("") || password.isEmpty()) {
editText_password.requestFocus();
editText_password.setError(getResources().getString(R.string.please_enter_password));
} else if (phoneNo.equals("") || phoneNo.isEmpty()) {
editText_phoneNo.requestFocus();
editText_phoneNo.setError(getResources().getString(R.string.please_enter_phone));
} else {
if (db.checkEmail(email)) {
db.addUser(name, email, password, phoneNo);
editText_name.setText("");
editText_email.setText("");
editText_password.setText("");
editText_phoneNo.setText("");
method.alertBox(getResources().getString(R.string.register_success));
startActivity(new Intent(Register.this, Login.class));
} else {
method.alertBox(getResources().getString(R.string.email_id_use));
}
}
}
@Override
public void onBackPressed() {
super.onBackPressed();
}
}
UpdateUser.java
package com.app.databaseloginregister.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import com.app.databaseloginregister.DataBase.DatabaseHandler;
import com.app.databaseloginregister.R;
import com.app.databaseloginregister.Util.Method;
public class UpdateUser extends AppCompatActivity {
private Method method;
private DatabaseHandler db;
private Button button_update;
private InputMethodManager imm;
private String id, name, email, password, phoneNo;
private EditText editText_name, editText_email, editText_password, editText_phoneNo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_update_user);
method = new Method(UpdateUser.this);
db = new DatabaseHandler(UpdateUser.this);
id = getIntent().getStringExtra("id");
name = getIntent().getStringExtra("name");
email = getIntent().getStringExtra("email");
phoneNo = getIntent().getStringExtra("phone");
imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
editText_name = findViewById(R.id.editText_name_update);
editText_email = findViewById(R.id.editText_email_update);
editText_password = findViewById(R.id.editText_password_update);
editText_phoneNo = findViewById(R.id.editText_phone_update);
button_update = findViewById(R.id.button_update);
editText_name.setText(name);
editText_email.setText(email);
editText_phoneNo.setText(phoneNo);
button_update.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
name = editText_name.getText().toString();
email = editText_email.getText().toString();
password = editText_password.getText().toString();
phoneNo = editText_phoneNo.getText().toString();
editText_name.clearFocus();
editText_email.clearFocus();
editText_password.clearFocus();
editText_phoneNo.clearFocus();
imm.hideSoftInputFromWindow(editText_name.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_email.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_password.getWindowToken(), 0);
imm.hideSoftInputFromWindow(editText_phoneNo.getWindowToken(), 0);
form();
}
});
}
private boolean isValidMail(String email) {
return android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();
}
private void form() {
editText_name.setError(null);
editText_email.setError(null);
editText_password.setError(null);
editText_phoneNo.setError(null);
if (name.equals("") || name.isEmpty()) {
editText_name.requestFocus();
editText_name.setError(getResources().getString(R.string.please_enter_name));
} else if (!isValidMail(email) || email.isEmpty()) {
editText_email.requestFocus();
editText_email.setError(getResources().getString(R.string.please_enter_email));
} else if (phoneNo.equals("") || phoneNo.isEmpty()) {
editText_phoneNo.requestFocus();
editText_phoneNo.setError(getResources().getString(R.string.please_enter_phone));
} else {
db.updateUser(id, name, email, password, phoneNo);
startActivity(new Intent(UpdateUser.this, MainActivity.class)
.putExtra("id", id));
finishAffinity();
}
}
@Override
public void onBackPressed() {
super.onBackPressed();
}
}
Sqlite Database
Create inside DataBase package name DatabaseHandler class and extends SQLiteOpenHelper. This class all function perform CRUD(create, read, update and delete)
onCreate() will be call once application is install and create table.
onUpgrade() call to update table.
addUser() method use to the new register user data add to the database.
getUser() method used to the get single user information using to user id.
updateUser() method used to the user update information to the database.
checkEmail() method used to check the email id already exist or not in database.
getUserId() method used to the get user id.
DatabaseHandler.java
package com.app.databaseloginregister.DataBase;
import android.annotation.SuppressLint;
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 com.app.databaseloginregister.Item.UserList;
import java.util.ArrayList;
import java.util.List;
public class DatabaseHandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "demo_login";
// Table name
private static final String TABLE_NAME = "user";
// Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_NAME = "name";
private static final String KEY_EMAIL = "user_email";
private static final String KEY_PHONE_NUMBER = "phone_number";
private static final String KEY_PASSWORD = "password";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
//create table
String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + "("
+ KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT ," + KEY_NAME + " TEXT,"
+ KEY_EMAIL + " TEXT," + KEY_PHONE_NUMBER + " TEXT,"
+ KEY_PASSWORD + " TEXT"
+ ")";
db.execSQL(CREATE_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
}
//add user in database
public void addUser(String name, String email, String password, String phone) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, name);
values.put(KEY_EMAIL, email);
values.put(KEY_PHONE_NUMBER, phone);
values.put(KEY_PASSWORD, password);
db.insert(TABLE_NAME, null, values);
db.close();//close database connection
}
//get user detail
public List getUser(String id) {
List userLists = new ArrayList<>();
String selectQuery = "SELECT * FROM " + TABLE_NAME + " WHERE " + KEY_ID + " = " + id;
Log.d("Query_database_user", selectQuery);
SQLiteDatabase db = this.getWritableDatabase();
@SuppressLint("Recycle")
Cursor cursor = db.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
UserList list = new UserList();
list.setName(cursor.getString(1));
list.setEmail(cursor.getString(2));
list.setPhone(cursor.getString(3));
list.setPassword(cursor.getString(4));
userLists.add(list);
} while (cursor.moveToNext());
}
// return user list
return userLists;
}
//update user detail
public void updateUser(String id, String name, String email, String password, String phoneNumber) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, name);
values.put(KEY_EMAIL, email);
if (!password.equals("")) {
values.put(KEY_PASSWORD, password);
}
if (!phoneNumber.equals("")) {
values.put(KEY_PHONE_NUMBER, phoneNumber);
}
db.update(TABLE_NAME, values, KEY_ID + "=" + id, null);
}
//check user login or not
public boolean checkLogin(String userEmail, String userPassword) {
String selectQuery = "SELECT " + KEY_ID + " FROM " + TABLE_NAME + " WHERE " + KEY_EMAIL + " =" + " " + "\'" + userEmail + "\'" + " AND " + KEY_PASSWORD + " = " + "\'" + userPassword + "\'";
Log.d("Query_database", selectQuery);
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if (cursor.getCount() == 0) {
return true;
} else {
return false;
}
}
//check email id exit or not
public boolean checkEmail(String userEmail) {
String selectQuery = "SELECT * FROM " + TABLE_NAME + " WHERE " + KEY_EMAIL + " =?";
Log.d("Query_database", selectQuery);
SQLiteDatabase db = this.getWritableDatabase();
@SuppressLint("Recycle") Cursor cursor = db.rawQuery(selectQuery, new String[]{userEmail});
if (cursor.getCount() == 0) {
return true;
} else {
return false;
}
}
//get current user login id
public String getUserId(String userEmail) {
String selectQuery = "SELECT * FROM " + TABLE_NAME + " WHERE " + KEY_EMAIL + " = " + "\'" + userEmail + "\'";
Log.d("Query_database", selectQuery);
SQLiteDatabase db = this.getWritableDatabase();
@SuppressLint("Recycle")
Cursor cursor = db.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
String userId = cursor.getString(0);
Log.d("user_id", String.valueOf(userId));
return userId;
} else {
return null;
}
}
}
Item class
UserList.java
package com.app.databaseloginregister.Item;
import java.io.Serializable;
public class UserList implements Serializable {
private String name, email, phone, password;
public UserList() {
}
public UserList(String name, String email, String phone, String password) {
this.name = name;
this.email = email;
this.phone = phone;
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
Method class
Method.java
package com.app.databaseloginregister.Util;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.support.v7.app.AlertDialog;
import com.app.databaseloginregister.R;
public class Method {
private Activity activity;
public SharedPreferences pref;
public SharedPreferences.Editor editor;
private final String myPreference = "login";
public String pref_login = "pref_login";
public String profileId = "profileId";
public Method(Activity activity) {
this.activity = activity;
pref = activity.getSharedPreferences(myPreference, 0); // 0 - for private mode
editor = pref.edit();
}
//show dialog box
public void alertBox(String message) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(activity);
alertDialogBuilder.setCancelable(false);
alertDialogBuilder.setMessage(message);
alertDialogBuilder.setPositiveButton(activity.getResources().getString(R.string.ok),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
}
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