Определить входящего вызывающего абонента Android и отобразить в тосте

Я пытаюсь создать простое приложение телефонной книги, в котором я могу выполнять поиск, а API вернет информацию. Пока что это та часть, над которой я работаю.

Я также хочу, чтобы входящий вызывающий абонент идентифицировался с помощью того же API, что потребовало бы, чтобы входящий номер от Broastcastreceiver был помещен в запрос API, а возвращенная информация должна отображаться в тосте. Это та часть, с которой у меня проблемы.

Пока это то, что у меня есть. Прошу прощения, если это действительно беспорядочно, это то, с чем я недавно экспериментировал и внес небольшие изменения. Также его много копипаста, я новичок в java / Android и пытаюсь научиться.

HttpHandler.java

package se.xx.api_test;

import android.util.Log;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;

public class HttpHandler extends PhoneCallReceiver {

    private static final String TAG = HttpHandler.class.getSimpleName();
    public HttpHandler() {
    }

    public String makeServiceCall(String reqUrl) {
        String response = null;
        try {
            URL url = new URL(reqUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            // read the response
            InputStream in = new BufferedInputStream(conn.getInputStream());
            response = convertStreamToString(in);
        } catch (MalformedURLException e) {
            Log.e(TAG, "MalformedURLException: " + e.getMessage());
        } catch (ProtocolException e) {
            Log.e(TAG, "ProtocolException: " + e.getMessage());
        } catch (IOException e) {
            Log.e(TAG, "IOException: " + e.getMessage());
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
        return response;
    }

    private String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line).append('\n');
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return sb.toString();
    }
}

PhoneCallReceiver.java

package se.xx.api_test;

import java.util.Date;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;

import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONException;
import android.util.Log;

public class PhoneCallReceiver extends BroadcastReceiver {

    //The receiver will be recreated whenever android feels like it.  We need a static variable to remember data between instantiations

    private static int lastState = TelephonyManager.CALL_STATE_IDLE;
    private static Date callStartTime;
    private static boolean isIncoming;
    public static String savedNumber;  //because the passed incoming is only valid in ringing


    @Override
    public void onReceive(Context context, Intent intent) {

        //We listen to two intents.  The new outgoing call only tells us of an outgoing call.  We use it to get the number.
        if (intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL")) {
            savedNumber = intent.getExtras().getString("android.intent.extra.PHONE_NUMBER");
        }
        else{
            String stateStr = intent.getExtras().getString(TelephonyManager.EXTRA_STATE);
            String number = intent.getExtras().getString(TelephonyManager.EXTRA_INCOMING_NUMBER);

            int state = 0;
            if (stateStr.equals(TelephonyManager.EXTRA_STATE_IDLE)){
                state = TelephonyManager.CALL_STATE_IDLE;
            }
            else if (stateStr.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){
                state = TelephonyManager.CALL_STATE_OFFHOOK;
            }
            else if (stateStr.equals(TelephonyManager.EXTRA_STATE_RINGING)){
                state = TelephonyManager.CALL_STATE_RINGING;
            }


            onCallStateChanged(context, state, number);
        }
    }

    //Derived classes should override these to respond to specific events of interest
    protected void onIncomingCallStarted(Context ctx, String number, Date start){}
    protected void onOutgoingCallStarted(Context ctx, String number, Date start){}
    protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end){}
    protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end){}
    protected void onMissedCall(Context ctx, String number, Date start){}

    //Deals with actual events

    //Incoming call-  goes from IDLE to RINGING when it rings, to OFFHOOK when it's answered, to IDLE when its hung up
    //Outgoing call-  goes from IDLE to OFFHOOK when it dials out, to IDLE when hung up
    public void onCallStateChanged(Context context, int state, String number) {
        if (lastState == state){
            //No change, debounce extras
            return;
        }
        switch (state) {
            case TelephonyManager.CALL_STATE_RINGING:
                isIncoming = true;
                callStartTime = new Date();
                savedNumber = number;
                onIncomingCallStarted(context, number, callStartTime);
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK:
                //Transition of ringing->offhook are pickups of incoming calls.  Nothing done on them
                if (lastState != TelephonyManager.CALL_STATE_RINGING){
                    isIncoming = false;
                    callStartTime = new Date();
                    onOutgoingCallStarted(context, savedNumber, callStartTime);
                }
                break;
            case TelephonyManager.CALL_STATE_IDLE:
                //Went to idle-  this is the end of a call.  What type depends on previous state(s)
                if (lastState == TelephonyManager.CALL_STATE_RINGING){
                    //Ring but no pickup-  a miss
                    onMissedCall(context, savedNumber, callStartTime);
                }
                else if (isIncoming){
                    onIncomingCallEnded(context, savedNumber, callStartTime, new Date());
                }
                else{
                    onOutgoingCallEnded(context, savedNumber, callStartTime, new Date());
                }
                break;
        }
        lastState = state;
    }

}

MainActivity.java

package se.xx.api_test;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONArray;

import java.util.ArrayList;
import java.util.HashMap;
import android.view.View.OnFocusChangeListener;
import android.view.inputmethod.InputMethodManager;

public class MainActivity extends AppCompatActivity {

    private TextView tv;
    private String TAG = MainActivity.class.getSimpleName();
    private ListView lv;

    ArrayList<HashMap<String, String>> contactList;

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

        contactList = new ArrayList<>();
        lv = (ListView) findViewById(R.id.list);
        tv = (TextView) findViewById(R.id.textInput);

        Button queryButton = (Button) findViewById(R.id.queryButton);
        queryButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                try {
                    InputMethodManager imm = (InputMethodManager)getSystemService(INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
                } catch (Exception e) {
                    // TODO: handle exception
                }

                contactList.clear();
                new GetContacts().execute();
            }
        });
    }

    private class GetContacts extends AsyncTask<Void, Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            //Toast.makeText(MainActivity.this,"Json Data is downloading",Toast.LENGTH_LONG).show();

        }

        @Override
        protected Void doInBackground(Void... arg0) {
            String id = tv.getText().toString();
            HttpHandler sh = new HttpHandler();
            // Making a request to url and getting response
            String url = "http://10.0.2.2/api/api.php?id = "+id;
            String jsonStr = sh.makeServiceCall(url);

            Log.e(TAG, "Response from url: " + jsonStr);
            if (jsonStr != null) {
                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);

                    // Getting JSON Array node
                    JSONArray contacts = jsonObj.getJSONArray("data");
                    // looping through All Contacts
                    for (int i = 0; i < contacts.length(); i++) {
                        JSONObject c = contacts.getJSONObject(i);
                        String namn = c.getString("namn");
                        String avdelning = c.getString("avdelning");
                        //String telnr = c.getString("telnr");

                        //JSONObject data = jsonObj.getJSONObject("data");
                        //String namn = data.getString("namn");
                        //String avdelning = data.getString("avdelning");
                        //String telnr = data.getString("telnr");

                        // Phone node is JSON Object
                        JSONObject phone = c.getJSONObject("phone");
                        String mobil = phone.getString("mobil");
                        String telnr = phone.getString("telnr");
                        //String office = phone.getString("office");

                        // tmp hash map for single contact
                        //HashMap<String, String> contact = new HashMap<>();
                        HashMap<String, String> contact = new HashMap<>();

                        // adding each child node to HashMap key => value
                        contact.put("namn", namn);
                        contact.put("avdelning", avdelning);
                        contact.put("mobil", mobil);
                        contact.put("telnr", telnr);
                        //contact.put("phone", phone);
                        //contact.put("namn", namn);
                        //contact.put("avdelning", avdelning);
                        //contact.put("telnr", telnr);

                        // adding contact to contact list
                        contactList.add(contact);
                    }
                } catch (final JSONException e) {
                    Log.e(TAG, "Json parsing error: " + e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),
                                    "Json parsing error: " + e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                        }
                    });

                }

            } else {
                Log.e(TAG, "Couldn't get json from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Couldn't get json from server. Check LogCat for possible errors!",
                                Toast.LENGTH_LONG).show();
                    }
                });
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            super.onPostExecute(result);
            ListAdapter adapter = new SimpleAdapter(MainActivity.this, contactList,
                    R.layout.list_item, new String[]{ "namn","avdelning","mobil", "telnr"},
                    new int[]{R.id.email, R.id.mobile, R.id.mobil, R.id.telnr});
            lv.setAdapter(adapter);
        }
    }

}

CallReceiver.java (это то, с чем я играл)

package se.xx.api_test;

import java.util.Date;
import java.util.HashMap;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.TextView;
import android.widget.RelativeLayout;
import android.view.ViewGroup;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import android.widget.ListAdapter;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import java.lang.String;
import android.telephony.TelephonyManager;


public class CallReceiver extends PhoneCallReceiver {
    @Override
    public void onIncomingCallStarted(Context ctx, String number, Date start) {

        final String phnr = String.valueOf(R.id.mobile);

        Toast toast = Toast.makeText(ctx.getApplicationContext(), , Toast.LENGTH_SHORT);
        ViewGroup group = (ViewGroup) toast.getView();
        TextView messageTextView = (TextView) group.getChildAt(0);
        messageTextView.setTextSize(25);
        toast.show();
    }

    @Override
    public void onOutgoingCallStarted(Context ctx, String number, Date start) {
    }

    @Override
    protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end) {
    }

    @Override
    protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end) {
    }

    @Override
    protected void onMissedCall(Context ctx, String number, Date start) {
    }

    private class APICall extends MainActivity {
        String number = getIntent().getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
        protected Void doInBackground(Void... arg0) {
            String TAG = MainActivity.class.getSimpleName();
            HttpHandler sh = new HttpHandler();
            // Making a request to url and getting response
            String url = "http://10.0.2.2/api/api.php?id = "+number;
            String jsonStr = sh.makeServiceCall(url);

            Log.e(TAG, "Response from url: " + jsonStr);
            if (jsonStr != null) {
                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);

                    // Getting JSON Array node
                    JSONArray contacts = jsonObj.getJSONArray("data");
                    // looping through All Contacts
                    for (int i = 0; i < contacts.length(); i++) {
                        JSONObject c = contacts.getJSONObject(i);
                        final String namn = c.getString("namn");
                        String avdelning = c.getString("avdelning");
                        //String telnr = c.getString("telnr");

                        //JSONObject data = jsonObj.getJSONObject("data");
                        //String namn = data.getString("namn");
                        //String avdelning = data.getString("avdelning");
                        //String telnr = data.getString("telnr");

                        // Phone node is JSON Object
                        JSONObject phone = c.getJSONObject("phone");
                        String mobil = phone.getString("mobil");
                        String telnr = phone.getString("telnr");
                        //String office = phone.getString("office");

                        // tmp hash map for single contact
                        //HashMap<String, String> contact = new HashMap<>();
                        HashMap<String, String> contact = new HashMap<>();

                        // adding each child node to HashMap key => value
                        contact.put("namn", namn);
                        contact.put("avdelning", avdelning);
                        contact.put("mobil", mobil);
                        contact.put("telnr", telnr);
                        //contact.put("phone", phone);
                        //contact.put("namn", namn);
                        //contact.put("avdelning", avdelning);
                        //contact.put("telnr", telnr);

                        // adding contact to contact list
                        contactList.add(contact);
                    }
                } catch (final JSONException e) {
                    Log.e(TAG, "Json parsing error: " + e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),
                                    "Json parsing error: " + e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                        }
                    });

                }

            } else {
                Log.e(TAG, "Couldn't get json from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Couldn't get json from server. Check LogCat for possible errors!",
                                Toast.LENGTH_LONG).show();
                    }
                });
            }

            return null;
        }

    }

}