Working Login

app/src/main/AndroidManifest.xml

@@ -12,14 +12,34 @@
         android:theme="@style/Theme.BookingAppAustinBlanke"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".LoginActivity"
             android:exported="true">
+            <meta-data
+            android:name="android.app.lib_name"
+            android:value="" />
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".MainActivity"
+            android:exported="false">
+
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
+        <activity
+            android:name=".CreateAccountActivity"
+            android:exported="false">
+
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
     </application>
 
 </manifest>
\ No newline at end of file

app/src/main/java/com/example/bookingapp_austinblanke/CreateAccountActivity.java

+package com.example.bookingapp_austinblanke;
+
+import androidx.appcompat.app.AppCompatActivity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Toast;
+
+public class CreateAccountActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.createaccount_activity);
+    }
+
+    public void createAccount(View view) {this.createAccount();}
+
+    private void createAccount()
+    {
+        DatabaseConnector connector = new DatabaseConnector(this, null);
+
+        EditText username = findViewById(R.id.Username);
+        EditText password = findViewById(R.id.Password);
+
+        connector.addNewUser(username.getText().toString(), password.getText().toString());
+
+        Intent intent = new Intent(this, LoginActivity.class);
+        startActivity(intent);
+    }
+
+}

app/src/main/java/com/example/bookingapp_austinblanke/DatabaseConnector.java

+package com.example.bookingapp_austinblanke;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import androidx.annotation.Nullable;
+
+
+public class DatabaseConnector extends SQLiteOpenHelper {
+
+    private static final String DB_NAME = "Registration.db";
+
+    private static final int DB_VERSION = 1;
+
+    private static final String TABLE_USERS = "Users";
+
+    private static final String COLUMN_UID = "uid";
+
+    private static final String COLUMN_USERNAME = "username";
+
+    private static final String COLUMN_PASSWORD = "password";
+
+    public DatabaseConnector(Context context, SQLiteDatabase.CursorFactory factory)
+    {
+        super(context, DB_NAME, factory, DB_VERSION);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+
+        String CREATE_table = "CREATE TABLE "+TABLE_USERS+"("+
+                COLUMN_UID+" INTEGER PRIMARY KEY, " +
+                COLUMN_USERNAME + " TEXT, " +
+                COLUMN_PASSWORD + " TEXT)";
+        db.execSQL(CREATE_table);
+    }
+
+    public void addNewUser(String username, String password)
+    {
+        ContentValues values = new ContentValues();
+        values.put(COLUMN_USERNAME, username);
+        values.put(COLUMN_PASSWORD, password);
+
+        SQLiteDatabase db = this.getWritableDatabase();
+        db.insert(TABLE_USERS, null, values);
+        db.close();
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
+
+    }
+
+    public boolean login(String username, String password) {
+        String query = "SELECT * FROM " + TABLE_USERS + " WHERE " + COLUMN_USERNAME + " = \"" + username +"\"";
+        SQLiteDatabase db = this.getWritableDatabase();
+        Cursor cursor = db.rawQuery(query, null);
+
+        boolean result = false;
+
+        if (cursor.moveToFirst()){
+            if (cursor.getString(2).equals(password))
+                result = true;
+            else
+                result = false;
+        }
+
+        cursor.close();
+        db.close();
+
+        return result;
+    }
+}

app/src/main/java/com/example/bookingapp_austinblanke/LoginActivity.java

@@ -15,11 +15,29 @@ public class LoginActivity extends AppCompatActivity {
         setContentView(R.layout.login_activity);
     }
 
+    public void createAccount(View view) {
+        Intent intent = new Intent(this, CreateAccountActivity.class);
+        startActivity(intent);
+    }
+
     public void login(View view) {
+        login();
+    }
+
+    private void login() {
+        DatabaseConnector connector = new DatabaseConnector(this, null);
+
+        EditText username = findViewById(R.id.Username);
+        EditText password = findViewById(R.id.Password);
+
+        boolean success = connector.login(username.getText().toString(), password.getText().toString());
+        if (success) {
             Intent intent = new Intent(this, MainActivity.class);
             startActivity(intent);
         }
-
+        else
+            Toast.makeText(this, "incorrect username or password", Toast.LENGTH_SHORT).show();
+    }
 
 
 }
\ No newline at end of file

app/src/main/java/com/example/bookingapp_austinblanke/MainActivity.java

@@ -9,5 +9,9 @@ import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;
 
 public class MainActivity extends AppCompatActivity {
-
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
 }
\ No newline at end of file

app/src/main/res/layout/createaccount_activity.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.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="match_parent"
+    android:layout_height="match_parent"
+    android:background="#F2F1E8"
+    tools:context=".LoginActivity">
+
+    <EditText
+        android:id="@+id/Password"
+        android:layout_width="228dp"
+        android:layout_height="71dp"
+        android:ems="10"
+        android:hint="Password"
+        android:inputType="textPassword"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.497"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.468" />
+
+    <EditText
+        android:id="@+id/Username"
+        android:layout_width="218dp"
+        android:layout_height="68dp"
+        android:ems="10"
+        android:hint="Username"
+        android:inputType="textPersonName"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.492"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.345" />
+
+    <Button
+        android:id="@+id/createAccount"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:onClick="createAccount"
+        android:text="Create Account"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.497"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.673" />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

app/src/main/res/layout/login_activity.xml

@@ -38,6 +38,7 @@
         android:id="@+id/CreateAccount"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:onClick="createAccount"
         android:text="Create Account"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
@@ -51,8 +52,8 @@
         android:layout_width="218dp"
         android:layout_height="68dp"
         android:ems="10"
+        android:hint="Username"
         android:inputType="textPersonName"
-        android:text="Username"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.497"