Implementacion de BD con el login

app/src/main/AndroidManifest.xml

@@ -12,9 +12,6 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.MedicalHealth"
         tools:targetApi="31" >
-        <activity
-            android:name=".IniciarSesionActivity"
-            android:exported="false" />
         <activity
             android:name=".EliminarActivity"
             android:exported="false" />

app/src/main/java/com/terratenientes/medicalhealth/Doctor.kt

@@ -0,0 +1,3 @@
+package com.terratenientes.medicalhealth
+
+data class Doctor(var Cedula : String ,var Nombre : String, var Apellido : String, var Telefono : String, var Consultorio : Int)

app/src/main/java/com/terratenientes/medicalhealth/DoctorDataBaseHelper.kt

@@ -0,0 +1,70 @@
+package com.terratenientes.medicalhealth
+
+import android.annotation.SuppressLint
+import android.content.ContentValues
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+import android.widget.Toast
+
+class DoctorDataBaseHelper (context: Context) : SQLiteOpenHelper(context, DATABASE_NAME,null,
+    DATABASE_VERSION){
+    companion object{
+        private const val DATABASE_NAME ="MedicalHealth"
+        private const val DATABASE_VERSION=1
+        private const val TABLE_NAME="Doctores"
+        private const val COLUMN_CEDULA="Cedula"
+        private const val COLUMN_NOMBRE="Nombre"
+        private const val COLUMN_APELLIDO="Apellido"
+        private const val COLUMN_TELEFONO="Telefono"
+        private const val COLUMN_CONSULTORIO="Consultorio"
+        private const val COLUMN_CONTRASENA="Contrasena"
+    }
+
+
+    @SuppressLint("SuspiciousIndentation")
+    override fun onCreate(db: SQLiteDatabase?) {
+       val crearTablaDoctores="CREATE TABLE $TABLE_NAME($COLUMN_CEDULA VARCHAR(30) PRIMARY KEY, $COLUMN_NOMBRE VARCHAR(30)," +
+               "$COLUMN_APELLIDO VARCHAR(30), $COLUMN_TELEFONO VARCHAR(30), $COLUMN_CONSULTORIO INTEGER, $COLUMN_CONTRASENA VARCHAR(30));"
+                db?.execSQL(crearTablaDoctores)
+    }
+
+    override fun onUpgrade(db: SQLiteDatabase?, p1: Int, p2: Int) {
+        val dropTableDoctores = "DROP TABLE IF EXISTS $TABLE_NAME"
+        db?.execSQL(dropTableDoctores)
+    }
+    fun agregarDoctores(doctor : Doctor, contrasena: String){
+        val db=writableDatabase
+        val values = ContentValues().apply {
+            put(COLUMN_CEDULA,doctor.Cedula)
+            put(COLUMN_NOMBRE, doctor.Nombre)
+            put(COLUMN_APELLIDO, doctor.Apellido)
+            put(COLUMN_TELEFONO, doctor.Telefono)
+            put(COLUMN_CONSULTORIO, doctor.Consultorio)
+            put(COLUMN_CONTRASENA, contrasena)
+        }
+        db.insert(TABLE_NAME,null, values)
+        db.close()
+    }
+    fun createTable(){
+        val db=writableDatabase
+        val crearTablaDoctores="CREATE TABLE $TABLE_NAME($COLUMN_CEDULA VARCHAR(30) PRIMARY KEY, $COLUMN_NOMBRE VARCHAR(30)," +
+                "$COLUMN_APELLIDO VARCHAR(30), $COLUMN_TELEFONO VARCHAR(30), $COLUMN_CONSULTORIO INTEGER, $COLUMN_CONTRASENA VARCHAR(30));"
+        db?.execSQL(crearTablaDoctores)
+    }
+    fun dropTable(){
+        val db=writableDatabase
+        val dropQuery="DROP TABLE IF EXISTS $TABLE_NAME"
+        db?.execSQL(dropQuery)
+    }
+    fun validarDatos(cedula :String , contrasena : String): Boolean{
+        val db = readableDatabase
+        val validarQuery = "SELECT * FROM $TABLE_NAME WHERE $COLUMN_CEDULA = '$cedula' AND $COLUMN_CONTRASENA = '$contrasena'"
+        val cursor = db.rawQuery(validarQuery, null)
+        val isValid = cursor.count > 0
+        cursor.close()
+        return isValid
+    }
+
+
+}

app/src/main/java/com/terratenientes/medicalhealth/MainActivity.kt

@@ -1,11 +1,45 @@
 package com.terratenientes.medicalhealth
 
+import android.annotation.SuppressLint
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.widget.Toast
+import com.terratenientes.medicalhealth.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var db: DoctorDataBaseHelper
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding=ActivityMainBinding.inflate(layoutInflater)
+        val view=binding.root
+        setContentView(view)
+
+        db =DoctorDataBaseHelper(this@MainActivity)
+        binding.btnIniciarSesion.setOnClickListener {
+            var res=db.validarDatos(binding.tvUsuario.text.toString(),binding.tvContrasena.text.toString())
+            if(res==true){
+                Toast.makeText(this@MainActivity,"VALIDADO",Toast.LENGTH_LONG).show()
+            }else{
+                Toast.makeText(this@MainActivity," NO VALIDADO",Toast.LENGTH_LONG).show()
             }
         }
+    }
+    @SuppressLint("SuspiciousIndentation")
+    private fun cargarDatos(){
+    val doctor= Doctor("1236","Sebastian","Cordoba","229330123",1)
+        db.agregarDoctores(doctor,"prueba")
+        Toast.makeText(this@MainActivity,"DATOS DEL DOCTOR AGREGADOS",Toast.LENGTH_LONG).show()
+    }
+    private fun validaDatos(){
+        var usuario=binding.tvUsuario.text.toString()
+        var contrasena=binding.tvContrasena.text.toString()
+        var res=db.validarDatos(usuario,contrasena)
+        if(res==true){
+            Toast.makeText(this@MainActivity,"VALIDADO",Toast.LENGTH_LONG).show()
+        }else{
+            Toast.makeText(this@MainActivity," NO VALIDADO",Toast.LENGTH_LONG).show()
+        }
+    }
+
+}

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

@@ -30,6 +30,7 @@
         android:textColorHint="@color/tv_titulo"
         android:textSize="25sp" />
 
+
     <EditText
         android:id="@+id/tv_contrasena"
         android:layout_marginTop="25dp"
@@ -41,6 +42,8 @@
         android:textColorHint="@color/tv_titulo"
         android:textSize="25sp"
         android:paddingStart="10dp"
+        android:ems="10"
+        android:inputType="textPassword"
         />
 
     <Button
@@ -65,6 +68,4 @@
         />
 
 
-
-
 </LinearLayout>