How to Pick Contacts in Android App in Android Studio Select Contact from Contact List

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Pick Contact | Android Studio | Java

Add permission in AndroidMenifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.usmtip.myapplication">



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



    <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=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

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"
    android:padding="10dp"
    tools:context=".MainActivity">

    <!--ImageView: Show contact thumbnail-->
    <ImageView
        android:id="@+id/thumbnailIv"
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:src="@drawable/ic_baseline_person_24"
        android:layout_centerHorizontal="true"/>

    <!--TextView: Show contact info-->
    <TextView
        android:id="@+id/contactTv"
        android:layout_below="@id/thumbnailIv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <!--FloatingActionButton: Click to pick contact-->
    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/addFab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:src="@drawable/ic_baseline_person_add_24"
        android:layout_alignParentEnd="true"
        android:layout_margin="10dp"/>

</RelativeLayout>

MainActivity.java

package com.usmtip.myapplication;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;


import androidx.appcompat.app.AppCompatActivity;

import com.google.android.material.floatingactionbutton.FloatingActionButton;


public class MainActivity extends AppCompatActivity {

    //UI Views
    private ImageView thumbnailIv;
    private TextView contactTv;
    private FloatingActionButton addFab;

    private static final int CONTACT_PERMISSION_CODE = 1;
    private static final int CONTACT_PICK_CODE = 2;


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




        //init UI Views
        thumbnailIv = findViewById(R.id.thumbnailIv);
        contactTv = findViewById(R.id.contactTv);
        addFab = findViewById(R.id.addFab);

        //handle click, to pick contact
        addFab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //first we need to check read contact permission
                if (checkContactPermission()){
                    //permission granted, pick contact
                    pickContactIntent();
                }
                else {
                    //permission not granted, request
                    requestContactPermission();
                }
            }
        });
    }

    private boolean checkContactPermission(){
        //check if contact permission was granted or not
        boolean result = ContextCompat.checkSelfPermission(
                this,
                Manifest.permission.READ_CONTACTS) == (PackageManager.PERMISSION_GRANTED
        );

        return result;  //true if permission granted, false if not
    }

    private void requestContactPermission(){
        //permissions to request
        String[] permission = {Manifest.permission.READ_CONTACTS};

        ActivityCompat.requestPermissions(this, permission, CONTACT_PERMISSION_CODE);
    }

    private void pickContactIntent(){
        //intent to pick contact
        Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
        startActivityForResult(intent, CONTACT_PICK_CODE);
    }


    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        //handle permission request result
        if (requestCode == CONTACT_PERMISSION_CODE){
            if (grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                //permission granted, can pick contact now
                pickContactIntent();
            }
            else {
                //permission denied
                Toast.makeText(this, "Permission denied...", Toast.LENGTH_SHORT).show();
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //handle intent results
        if (resultCode == RESULT_OK){
            //calls when user click a contact from list

            if (requestCode == CONTACT_PICK_CODE){
                contactTv.setText("");

                Cursor cursor1, cursor2;

                //get data from intent
                Uri uri = data.getData();

                cursor1 = getContentResolver().query(uri, null, null, null, null);

                if (cursor1.moveToFirst()){
                    //get contact details
                    String contactId = cursor1.getString(cursor1.getColumnIndex(ContactsContract.Contacts._ID));
                    String contactName = cursor1.getString(cursor1.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                    String contactThumnail = cursor1.getString(cursor1.getColumnIndex(ContactsContract.Contacts.PHOTO_THUMBNAIL_URI));
                    String idResults = cursor1.getString(cursor1.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
                    int idResultHold = Integer.parseInt(idResults);

                    contactTv.append("ID: "+contactId);
                    contactTv.append("\nName: "+contactName);

                    if (idResultHold == 1){
                        cursor2 = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                                null,
                                ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+contactId,
                                null,
                                null
                        );
                        //a contact may have multiple phone numbers
                        while (cursor2.moveToNext()){
                            //get phone number
                            String contactNumber = cursor2.getString(cursor2.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                            //set details

                            contactTv.append("\nPhone: "+contactNumber);
                            //before setting image, check if have or not
                            if (contactThumnail != null){
                                thumbnailIv.setImageURI(Uri.parse(contactThumnail));
                            }
                            else {
                                thumbnailIv.setImageResource(R.drawable.ic_baseline_person_24);
                            }
                        }
                        cursor2.close();
                    }
                    cursor1.close();
                }
            }

        }
        else {
            //calls when user click back button | don't pick contact
        }
    }
}