Write a Program to create a button “Call”. When you click on this button it should make a call to the given number.

 Code:

Activity_main.xml:

<?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=".MainActivity">

<EditText

android:layout_height="wrap_content"

android:layout_width="wrap_content"

android:layout_above="@id/t1"

android:layout_centerVertical="true"

android:layout_centerHorizontal="true"

android:hint="enter number"

android:ems="10"

android:id="@+id/e1"

/>

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Dial"

android:layout_centerHorizontal="true"

android:layout_centerVertical="true"

android:id="@+id/t1"

/>

</RelativeLayout>

Main_Activity.java:

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;

import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final EditText e1=(EditText)findViewById(R.id.e1);

final Button b1=(Button)findViewById(R.id.t1);

b1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

String n = e1.getText().toString();

Intent cinte =new Intent(Intent.ACTION_CALL);

cinte.setData(Uri.parse("tel:"+n));

startActivity(cinte);

}

});

}

}

Output:

1]Original Layout                                                     2] After Click on Dial button