Intent in Android with Example using Kotlin

                            Intent in Android using Kotlin

What is Intent ?

Intent is a messaging object used to request an action from application components like activity,
service, broadcast receiver

There are 2 types of Intents

1. Explict Intent
2. Implict Intent

Explict Intent

Explict intents are used to switch between the activities , it can also pass data from one activity to another.

activity_first.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  

      xmlns:tools="http://schemas.android.com/tools"    

    xmlns:app="http://schemas.android.com/apk/res-auto" 

       android:layout_width="match_parent"     

   android:layout_height="match_parent"     

   tools:context=".FirstActivity"      

  android:orientation="vertical">

    <Button android:layout_width="match_parent"       

     android:layout_height="wrap_content"       

     android:id="@+id/button"        

    android:text="Explicit Intent Example"/>

</LinearLayout>

FirstActivity.kt

package com.example.kotlinsampleproject

import android.content.Intent
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_first.*

class FirstActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_first)

        button.setOnClickListener {         
   intent = Intent(this,SecondActivity::class.java)
            startActivity(intent);
        }    }
}

Implict Intent

Implict intent doesnt directly specify the android component which should be called, it tells the action to be performed, 

we can simply define implicity intent as the component where next action as is known and action is performed in the same page without calling other android components.

Example using Kotlin

package com.example.kotlinsampleproject

import android.content.Intent
import android.net.Uri
import android.support.v7.app.AppCompatActivity
import android.os.Bundle

class SecondActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_second)

        //Example for implict intent     

   intent = Intent(Intent.ACTION_VIEW, 

        Uri.parse("https://sushmithan.blogspot.com"))
        startActivity(intent);
    }
}

Output :

Happy Reading 😊
Thank You

Sushmitha N
Hi there ! Im a experienced android developer with 4years of revelant exprience.My Skills include Android,Core Java ,Oops and Kotlin.
Youtube Channel : SDK Book