What is Intent in Android Studio?

Intent Tutorial

The intent is described as moving from one point to another

The intent is of two types

  • Explicit Intent:
  1. Explicit Intent is used to connect applications internally.
  2. For example, if we the known class name then we go from one activity to another…,
  3. So, here is the code

    Main Activity

<?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">

  <Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/btn_1"
      android:text="Activity 1"
      android:textColor="@color/white"
      android:layout_centerInParent="true"/>

</RelativeLayout>
package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button=findViewById(R.id.btn_1);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,MainActivity2.class);
                startActivity(intent);
            }
        });
    }
}
This is the code by which you can go from one Activity to second Activity
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,MainActivity2.class);
startActivity(intent);

        Main Activity 2

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout
    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=".MainActivity2">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:id="@+id/btn1"
        android:text="Activity 2"
        android:background="@color/purple_700"
        android:textColor="@color/white"
        android:textSize="25dp"/>
    
</RelativeLayout>
package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class MainActivity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
    }
}
  • Implicit Intent:

It has to be open any web page by using set Action() as shown

Step1: Create a new project in Android Studio 
Step2: Add the code
Step3: In res/layout
<?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">

  <Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/btn_1"
      android:text="Activity 1"
      android:textColor="@color/white"
      android:layout_centerInParent="true"/>

</RelativeLayout>
package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button = findViewById(R.id.btn_1);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent();
                i.setAction(Intent.ACTION_VIEW);
                i.setData(Uri.parse("https://www.google.com"));
                startActivity(i);
            }
        });
        
    }
}
To get Access to website Just access to the internet in Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapplication">
    <uses-permission android:name = "android.permission.INTERNET"/>

    <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/Theme.MyApplication">
        <activity android:name=".MainActivity2"></activity>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

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