অ্যান্ড্রয়েডে ফোন কল করার পদ্ধতি

Contacts থেকে নম্বর বেছে করে সরাসরি কল করা

এই উদাহরণটি দেখাবে কীভাবে কন্ট্যাক্ট লিস্ট থেকে নম্বর বেছে করে.ACTION_CALL ইন্টেন্ট ব্যবহার করে কল করা যায়।

ধাপ ১: নতুন প্রজেক্ট তৈরি করুন

Android Studio-তে File → New Project নির্বাচন করুন।

ধাপ ২: লেআউট ফাইল (res/layout/activity_main.xml)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="https://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:gravity="center"
    android:layout_height="match_parent">
    <ListView
        android:id="@+id/list"
        android:layout_width="wrap_content"
        android:textSize="30sp"
        android:layout_height="wrap_content"
        android:text="Click"/>
</LinearLayout>

ধাপ ৩: মেইন এক্টিভিটিতে কোড (src/MainActivity.java)

package com.example.myapplication;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    public static final int REQUEST_READ_CONTACTS = 79;
    private static final int REQUEST = 112;
    ListView list;
    ArrayList<String> mobileArray;
    ArrayList<String> numberArray;
    String number;

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        numberArray = new ArrayList<>();
        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
            mobileArray = getAllContacts();
        } else {
            requestPermission();
        }
        list = findViewById(R.id.list);
        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
                android.R.layout.simple_list_item_1, android.R.id.text1, mobileArray);
        list.setAdapter(adapter);
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                number = numberArray.get(position);
                if (Build.VERSION.SDK_INT >= 23) {
                    String[] PERMISSIONS = {android.Manifest.permission.CALL_PHONE};
                    if (!hasPermissions(MainActivity.this, PERMISSIONS)) {
                        ActivityCompat.requestPermissions(MainActivity.this, PERMISSIONS, REQUEST);
                    } else {
                        makeCall(number);
                    }
                } else {
                    makeCall(number);
                }
            }
        });
    }

    private static boolean hasPermissions(Context context, String... permissions) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
            for (String permission : permissions) {
                if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
                    return false;
                }
            }
        }
        return true;
    }

    private void makeCall(String number) {
        Intent phoneCallIntent = new Intent(Intent.ACTION_CALL);
        phoneCallIntent.setData(Uri.parse("tel:" + number));
        startActivity(phoneCallIntent);
    }

    private void requestPermission() {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.READ_CONTACTS)) {
            // UI দেখান
        } else {
            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.READ_CONTACTS}, REQUEST_READ_CONTACTS);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {
            case REQUEST_READ_CONTACTS: {
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    mobileArray = getAllContacts();
                }
                return;
            }
            case REQUEST: {
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    makeCall(number);
                } else {
                    Toast.makeText(MainActivity.this, "The app was not allowed to call.", Toast.LENGTH_LONG).show();
                }
            }
        }
    }

    private ArrayList<String> getAllContacts() {
        ArrayList<String> nameList = new ArrayList<>();
        ContentResolver cr = getContentResolver();
        Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        if ((cur != null ? cur.getCount() : 0) > 0) {
            while (cur != null && cur.moveToNext()) {
                String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
                String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                nameList.add(name);
                if (cur.getInt(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
                    Cursor pCur = cr.query(
                            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                            null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
                            new String[]{id}, null);
                    while (pCur.moveToNext()) {
                        String phoneNo = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        numberArray.add(phoneNo);
                    }
                    pCur.close();
                }
            }
        }
        if (cur != null) cur.close();
        return nameList;
    }
}

ধাপ ৪: ম্যানিফেস্টে পারমিশন (AndroidManifest.xml)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="https://schemas.android.com/apk/res/android"
    package="com.example.myapplication">
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <application ...>
        <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>

অ্যাপ্লিকেশন চালানোর পদ্ধতি

অ্যাপ চালু করুন। কন্ট্যাক্ট লিস্ট থেকে যেকোনো নম্বরে ক্লিক করলে কল শুরু হবে।