

+ --------------------------------------------------------------+         
|   this code is for implicit-intents.png                       |
|                                                               |
+ --------------------------------------------------------------+ 



right click on com.example.ExplicitIntents (inside java folder (1st folder)) -> new ->activity -> empty activity (name as SecondActivity.kt)


--------------------------------------------
activity_main.xml
---------------------------------------------

<?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="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/ExplicitButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Explicit Intents"
        android:textAllCaps="true"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="150dp"/>

    <Button
        android:id="@+id/B1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Implicit Intents"
        app:layout_constraintTop_toBottomOf="@id/ExplicitButton"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginTop="40dp"/>

</android.support.constraint.ConstraintLayout>



--------------------------------------------
activity_second.xml
---------------------------------------------


<?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="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome to Second Activity"
        android:textSize="30sp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

</android.support.constraint.ConstraintLayout>


--------------------------------------------
MainActivity.kt
---------------------------------------------


package com.example.cie3_implicit_intents
import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.widget.Button
import android.widget.Toast

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Explicit Intent
        val explicitButton = findViewById<Button>(R.id.ExplicitButton)
        explicitButton.setOnClickListener {
            Toast.makeText(this, "Opening Second Activity", Toast.LENGTH_SHORT).show()
            val explicitIntent = Intent(this, SecondActivity::class.java)
            startActivity(explicitIntent)
            finish()  // optional: use only if you don't want to return to MainActivity
        }

        // Implicit Intent
        val url = "https://www.google.com"
        val implicitButton = findViewById<Button>(R.id.B1)
        implicitButton.setOnClickListener {
            val implicitIntent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
            startActivity(implicitIntent)
        }
    }
}

--------------------------------------------
SecondActivity.kt
---------------------------------------------
don't change anything