How to open dialer in Android through Intent?

Last Updated : 03 Nov, 2020

The phone dialer is an activity available with the Android operating system to call a number. Usually, such activity may or may not have an EditText, for taking the number as input, and a Call button. When the user presses the Call button, it invokes the dialer app activity. Use of ‘tel:’ prefix is recommended, else java.lang.IllegalStateException will be thrown. Action_Dial doesn’t require any permission. Below is the code for MainActivity file in both Java and Kotlin.

Java

package com.geeksforgeeks.gfg.dial; 
  
// importing packages 
import android.content.Intent; 
import android.net.Uri; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 
  
public class MainActivity extends AppCompatActivity { 
  
    @Override
    protected void onCreate(Bundle savedInstanceState)  
    { 
        super.onCreate(savedInstanceState); 
  
        // Binding MainActivity.java with  
        // activity_main.xml file 
        setContentView(R.layout.activity_main); 
      
    } 
  
    // This function is called when button is clicked. 
    public  void Call(View v) 
    { 
        // Find the EditText by its unique ID 
        EditText e = (EditText)findViewById(R.id.editText); 
  
        // show() method display the toast with message  
        // "clicked" 
        Toast.makeText(this, "clicked", Toast.LENGTH_LONG) 
             .show(); 
  
        // Use format with "tel:" and phoneNumber created is  
        // stored in u. 
        Uri u = Uri.parse("tel:" + e.getText().toString()); 
  
        // Create the intent and set the data for the  
        // intent as the phone number. 
        Intent i = new Intent(Intent.ACTION_DIAL, u); 
  
        try
        { 
            // Launch the Phone app's dialer with a phone  
            // number to dial a call. 
            startActivity(i);  
        } 
        catch (SecurityException s) 
        { 
            // show() method display the toast with  
            // exception message. 
            Toast.makeText(this, "An error occurred", Toast.LENGTH_LONG) 
                 .show(); 
        } 
    } 
} 

Kotlin

package com.geeksforgeeks.gfg.dial 
  
import android.content.Intent 
import android.net.Uri 
import android.os.Bundle 
import android.view.View 
import android.widget.EditText 
import android.widget.Toast 
import androidx.appcompat.app.AppCompatActivity 
import com.example.gfgreviewinjava.R 
  
class MainActivity : AppCompatActivity() { 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
  
        // Binding MainActivity.java with 
        // activity_main.xml file 
        setContentView(R.layout.activity_main) 
    } 
  
    // This function is called when button is clicked. 
    fun Call(v: View?) { 
        // Find the EditText by its unique ID 
        val e = findViewById<View>(R.id.editText) as EditText 
  
        // show() method display the toast with message 
        // "clicked" 
        Toast.makeText(this, "clicked", Toast.LENGTH_LONG) 
                .show() 
  
        // Use format with "tel:" and phoneNumber created is 
        // stored in u. 
        val u = Uri.parse("tel:" + e.text.toString()) 
  
        // Create the intent and set the data for the 
        // intent as the phone number. 
        val i = Intent(Intent.ACTION_DIAL, u) 
        try { 
            // Launch the Phone app's dialer with a phone 
            // number to dial a call. 
            startActivity(i) 
        } catch (s: SecurityException) { 
            // show() method display the toast with 
            // exception message. 
            Toast.makeText(this, "An error occurred", Toast.LENGTH_LONG) 
                    .show() 
        } 
    } 
}

In order to make a direct call without switching into dialer activity, you need to add Intent.ACTION_CALL in place of Intent.ACTION_DIAL.
activity_main.xml

XML

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout
    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"
  
    <!-- covers entire width of the screen -->
    android:layout_width="match_parent" 
  
    <!-- covers entire height of the screen -->
    android:layout_height="match_parent" 
  
    tools:context="com.example.hp.dial.MainActivity"> 
  
    <EditText
        android:id="@+id/editText"
        <!-- covers as much width as required. -->
        android:layout_width="wrap_content" 
  
        <!-- covers as much height as required. -->
        android:layout_height="wrap_content" 
  
        <!-- left spacing from the parent layout-->
        android:layout_marginLeft="8dp" 
  
        <!-- right spacing from the parent layout-->
        android:layout_marginRight="8dp" 
  
        <!-- top spacing from the parent layout-->
        android:layout_marginTop="65dp" 
  
        <!-- hint works as a place holder -->
        android:hint="Phone No." 
  
        <!-- Expressing the given input should be phone no -->
        android:inputType="phone" 
  
        app:layout_constraintHorizontal_bias="0.503" 
        app:layout_constraintLeft_toLeftOf="parent" 
        app:layout_constraintRight_toRightOf="parent" 
        app:layout_constraintTop_toTopOf="parent" /> 
  
    <Button
        android:id="@+id/button"
  
        <!-- covers as much width as required. -->
        android:layout_width="wrap_content" 
  
        <!-- covers as much height as required. -->
        android:layout_height="wrap_content" 
  
        android:layout_marginLeft="8dp" 
        android:layout_marginRight="8dp" 
        android:layout_marginTop="67dp" 
  
        <!-- name of function is Call, and it is -->
        <!-- invoked when the button is clicked.-->
        android:onClick="Call" 
  
        android:text="DIAL" 
  
        <!-- below are the positions of the button -->
        <!-- with respect to editText and parent layout. -->
        app:layout_constraintLeft_toLeftOf="parent" 
        app:layout_constraintRight_toRightOf="parent" 
        app:layout_constraintTop_toBottomOf="@+id/editText" 
    /> 
</android.support.constraint.ConstraintLayout> 

In AndroidManifest.xml, include the below permission to directly call without opening in a dialer. To make a call through open in a dialer, below permission is not needed.

uses-permission android:name="android.permission.CALL_PHONE"

Figure 1. Enter Phone no.

Figure 2. Open the dialer activity.

Suggest improvement

How to Send Data From One Activity to Second Activity in Android?

Creating Multiple Screen Applications in Android

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