android - 交互式 ussd session (多步)在 android 8(奥利奥)上不起作用

Question

我目前正在使用 android api 级别 26(Nexus 6P)中可用的电话管理器(USSD 响应)。对于单步 ussd session ，它正在运行。

引用: http://codedrago.com/q/140674/android-telephony-telephonymanager-ussd-android-8-0-oreo-does-android-8-0-api-26-support-sending-and-repying-to-ussd-messages

例子:

USSD 请求:“A”(ussd session 启动)

USSD 响应:“X”(ussd session 终止)

    TelephonyManager =  telephonyManager(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
    Handler handler = new Handler();
    TelephonyManager.UssdResponseCallback callback = new TelephonyManager.UssdResponseCallback() {
        @Override
        public void onReceiveUssdResponse(TelephonyManager telephonyManager, String request, CharSequence response) {
            super.onReceiveUssdResponse(telephonyManager, request, response);
            Log.e("ussd",response.toString());

        }

        @Override
        public void onReceiveUssdResponseFailed(TelephonyManager telephonyManager, String request, int failureCode) {
            super.onReceiveUssdResponseFailed(telephonyManager, request, failureCode);
            Log.e("ussd","failed with code " + Integer.toString(failureCode));
        }
    };

    try {
           Log.e("ussd","trying to send ussd request");
           telephonyManager.sendUssdRequest("*123#",
                    callback,
                    handler);
        }catch (Exception e){


            String msg= e.getMessage();
            Log.e("DEBUG",e.toString());
            e.printStackTrace();
        }

但对于交互式 ussd 请求-响应(多步)，它不起作用。 多步场景如下:

第 1 步。

USSD 请求:“A”(ussd session 启动)

USSD 回应:“X”

第 2 步。

USSD 请求:“B”(ussd session 继续)

USSD 响应:"is"

第 3 步。

USSD 请求:“C”

USSD 响应:“Z”(ussd session 终止)

Answer 1

我能够得到一个菜单，通过发送一个数字来响应它，但超过那个数字，我想我是在电信公司的摆布下 - 他们发送一个菜单来阻止整个屏幕，如果你取消它，整个 session 就会消失.在电信工作过后，我认为这可能因电信公司而异，因为他们中的一些拥有可以终止用户发起的 session 并将其替换为电信方发起的 session 的网关。从技术上讲，这两个 session 是分离的。但这是我的代码:

    package org.rootio.test.telephony.telephonyautorespond;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.telecom.TelecomManager;
import android.telephony.PhoneStateListener;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;

import com.google.android.material.snackbar.Snackbar;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import androidx.annotation.RequiresApi;

import static android.content.ContentValues.TAG;

interface UssdResultNotifiable {
    void notifyUssdResult(String request, String returnMessage, int resultCode);
}

public class HomeActivity extends Activity implements UssdResultNotifiable {

    USSDSessionHandler hdl;
    private TelephonyManager telephonyManager;
    private PhoneCallListener listener;
    private TelecomManager telecomManager;

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

    public void onUssdSend(View view) {
        //USSDHandler callback = new USSDHandler(view);
        /* if (checkSelfPermission(Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
         *//*if(ActivityCompat.shouldShowRequestPermissionRationale(HomeActivity.this, Manifest.permission.CALL_PHONE))
                    {

                    }
                    else
                    {*//*
                        //ActivityCompat.requestPermissions(HomeActivity.this, new String[]{Manifest.permission.CALL_PHONE}, 0);
                   // }
                    Snackbar.make(view, "permissions were missing", Snackbar.LENGTH_LONG)
                            .setAction("Response", null).show();
                    return;
                }*/
        //HomeActivity.this.telephonyManager.sendUssdRequest("*#123*99#", callback, new Handler());



        hdl = new USSDSessionHandler(HomeActivity.this, HomeActivity.this);

        hdl.doSession(((EditText)this.findViewById(R.id.ussdText)).getText().toString());

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_home, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void toggleListener(View v) {
        if (((Switch) v).isChecked()) {
            this.listenForTelephony();
            Toast.makeText(this, "Listening for calls", Toast.LENGTH_LONG).show();
        } else {
            this.stopListeningForTelephony();
        }
    }

    private void listenForTelephony() {
        this.telephonyManager = (TelephonyManager) this.getSystemService(this.TELEPHONY_SERVICE);
        this.telecomManager = (TelecomManager) this.getSystemService(this.TELECOM_SERVICE);
        this.listener = new PhoneCallListener();
        telephonyManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
    }

    private void stopListeningForTelephony() {
        this.telephonyManager = null;
        this.telecomManager = null;
    }

    @Override
    public void notifyUssdResult(final String request, final String returnMessage, final int resultCode) {
        this.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(HomeActivity.this, "Request was " + request + "\n response is " + returnMessage + "\n result code is " + resultCode, Toast.LENGTH_LONG).show();

            }
        });

    }


    class PhoneCallListener extends PhoneStateListener {
        @RequiresApi(api = Build.VERSION_CODES.M)
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {

            switch (state) {
                case TelephonyManager.CALL_STATE_RINGING:
                    HomeActivity.this.telecomManager.acceptRingingCall();
                    break;
                case TelephonyManager.CALL_STATE_IDLE:
                    Toast.makeText(HomeActivity.this, "Call is no longer active...", Toast.LENGTH_LONG);
                    break;
            }
        }
    }

    @TargetApi(Build.VERSION_CODES.O)
    class USSDHandler extends TelephonyManager.UssdResponseCallback {

        View parent;

        USSDHandler(View v) {
            this.parent = v;
        }

        @Override
        public void onReceiveUssdResponse(TelephonyManager telephonyManager, String request, CharSequence response) {
            super.onReceiveUssdResponse(telephonyManager, request, response);
            Snackbar.make(this.parent, response, Snackbar.LENGTH_LONG)
                    .setAction("Response", null).show();
        }

        @Override
        public void onReceiveUssdResponseFailed(TelephonyManager telephonyManager, String request, int failureCode) {
            super.onReceiveUssdResponseFailed(telephonyManager, request, failureCode);
            Snackbar.make(this.parent, "error is " + failureCode + " for req " + request, Snackbar.LENGTH_LONG)
                    .setAction("Response", null).show();
        }
    }


}

class USSDSessionHandler {

    TelephonyManager tm;
    private UssdResultNotifiable client;
    private Method handleUssdRequest;
    private Object iTelephony;

    USSDSessionHandler(Context parent, UssdResultNotifiable client) {
        this.client = client;
        this.tm = (TelephonyManager) parent.getSystemService(Context.TELEPHONY_SERVICE);
        try {
            this.getUssdRequestMethod();
        } catch (Exception ex) {
            //log
        }

    }

    private void getUssdRequestMethod() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        if (tm != null) {
            Class telephonyManagerClass = Class.forName(tm.getClass().getName());
            if (telephonyManagerClass != null) {
                Method getITelephony = telephonyManagerClass.getDeclaredMethod("getITelephony");
                getITelephony.setAccessible(true);
                this.iTelephony = getITelephony.invoke(tm); // Get the internal ITelephony object
                Method[] methodList = iTelephony.getClass().getMethods();
                this.handleUssdRequest = null;
                /*
                 *  Somehow, the method wouldn't come up if I simply used:
                 *  iTelephony.getClass().getMethod('handleUssdRequest')
                 */

                for (Method _m : methodList)
                    if (_m.getName().equals("handleUssdRequest")) {
                        handleUssdRequest = _m;
                        break;
                    }
            }
        }
    }

    public void doSession(String ussdRequest) {
        try {

            if (handleUssdRequest != null) {
                handleUssdRequest.setAccessible(true);
                handleUssdRequest.invoke(iTelephony, SubscriptionManager.getDefaultSubscriptionId(), ussdRequest, new ResultReceiver(new Handler()) {

                    @Override
                    protected void onReceiveResult(int resultCode, Bundle ussdResponse) {
                        /*
                         * Usually you should the getParcelable() response to some Parcel
                         * child class but that's not possible here, since the "UssdResponse"
                         * class isn't in the SDK so we need to
                         * reflect again to get the result of getReturnMessage() and
                         * finally return that!
                         */

                        Object p = ussdResponse.getParcelable("USSD_RESPONSE");

                        if (p != null) {

                            Method[] methodList = p.getClass().getMethods();
                            for(Method m : methodList)
                            {
                                Log.i(TAG, "onReceiveResult: " + m.getName());
                            }
                            try {
                                CharSequence returnMessage = (CharSequence) p.getClass().getMethod("getReturnMessage").invoke(p);
                                CharSequence request = (CharSequence) p.getClass().getMethod("getUssdRequest").invoke(p);
                                USSDSessionHandler.this.client.notifyUssdResult("" + request, "" + returnMessage, resultCode); //they could be null
                            } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
                                e.printStackTrace();
                            }
                        }
                    }

                });
            }
        } catch (IllegalAccessException | InvocationTargetException e1) {
            e1.printStackTrace();
        }
    }
}

请忽略电话接听功能 - 我之前使用此应用程序来测试 Oreo 的自动电话接听功能。下面是显示的布局文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
    tools:context=".HomeActivity">


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

        <TextView
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="USSD Input"
            android:textSize="18sp" />

        <EditText
            android:id="@+id/ussdText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10"
            android:inputType="textPersonName" />
    </LinearLayout>

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="onUssdSend"
        android:text="send" />
</LinearLayout>