How to make phone call

In this example we’ll see how to make a phone call using an Intent object in the android to invoke the default phone calls feature.

Intent i = new Intent(Intent.ACTION_CALL);
i.setData(Uri.parse("tel:"+number));
startActivity(i); 
 // Below permission is required to make calls in android
 
 if (ActivityCompat.checkSelfPermission(MainActivity.this,
       Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
         return;
       } 
// MainActivity.java
package com.androidaura.phone;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    EditText getNo;
    Button callNo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        getNo=(EditText)findViewById(R.id.mobileNo);
        callNo=(Button)findViewById(R.id.btCall);

        callNo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String number=getNo.getText().toString();
                Intent i = new Intent(Intent.ACTION_CALL);
                i.setData(Uri.parse("tel:"+number));

                if (ActivityCompat.checkSelfPermission(MainActivity.this,
                        Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    return;
                }

                startActivity(i);
            }
        });
    }
} 
In activity_main.xml file we are adding EditText and Button to enter phone number and to make call.
// activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center">

    <EditText
        android:id="@+id/mobileNo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="25dp"
        android:hint="Enter Number"
        android:inputType="phone"
        android:maxLength="10" />

    <Button
        android:id="@+id/btCall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:text="Make Call" />

</LinearLayout>
 
// Now add CALL_PHONE permission in AndroidManifest.xml file

  <uses-permission android:name="android.permission.CALL_PHONE" /> 

Output