Phone Call example selecting Contacts from phone

Phone Call example selecting Contacts from phone

In this tutorial we will learn how to call by selecting contacts from mobile with a simple example using Android Studio. In previous example we learn how to make a call just by giving hard coded number.

Example:

• Create a new project in Android Studio and name it as PhoneCall.
• Copy and paste the following code in activity_main.xml.

File: activity_main.xml:

<LinearLayout 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"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="10dp"
    tools:context="hss_24.example.com.phonecall.MainActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="40dp"
        android:gravity="center_horizontal"
        android:text="Android Lovers"
        android:textSize="20dp"
        android:textStyle="bold" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:weightSum="1">

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.8"
            android:gravity="center"
            android:text="Select Contact from list"
            android:textSize="18dp"
            android:textStyle="bold" />

        <ImageButton
            android:id="@+id/btn_contacts"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.2"
            android:src="@android:drawable/stat_sys_phone_call" />

    </LinearLayout>


</LinearLayout>

Copy and paste the following code in MainActivity.java.

File: MainActivity.java:

import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;

public class MainActivity extends AppCompatActivity {
    ImageButton contacts;
    private static final int CONTACT_PICKER_RESULT = 1001;

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

        contacts = (ImageButton) findViewById(R.id.btn_contacts);

        contacts.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
                pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts w/ phone numbers
                startActivityForResult(pickContactIntent, CONTACT_PICKER_RESULT);
            }
        });


    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // Check which request it is that we're responding to
        if (requestCode == CONTACT_PICKER_RESULT) {
            // Make sure the request was successful
            if (resultCode == RESULT_OK) {
                // Get the URI that points to the selected contact
                Uri contactUri = data.getData();
                // We only need the NUMBER column, because there will be only one row in the result
                String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER};

                Cursor cursor = getContentResolver()
                        .query(contactUri, projection, null, null, null);
                cursor.moveToFirst();

                // Retrieve the phone number from the NUMBER column
                int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
                String number = cursor.getString(column);

                // set intent and call
                Intent callIntent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + number));
                startActivity(callIntent);

            }
        }
    }

}

Give the following permission in the Manifest file to read the phone contacts.

File: AndroidMainfest.xml: 

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.nouman.phonecall">

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <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>



Now run the app and enjoy the output.

Output: