Prevent USSD dialog and read USSD response?

Question

i did many research about ussd but I can\'t read USSD respone and how can I prevent ussd dialog like this application.

https://play.google.com/store/apps/details?id=

Answer 1

Use IExtendedNetworkService.aidl

Create this file in path com\android\internal\telephony

package com.android.internal.telephony;

/**
 * Interface used to interact with extended MMI/USSD network service.
 */
interface IExtendedNetworkService {
    /**
     * Set a MMI/USSD command to ExtendedNetworkService for further process.
     * This should be called when a MMI command is placed from panel.
     * @param number the dialed MMI/USSD number.
     */
    void setMmiString(String number);

    /**
     * return the specific string which is used to prompt MMI/USSD is running
     */
    CharSequence getMmiRunningText();

    /**
     * Get specific message which should be displayed on pop-up dialog.
     * @param text original MMI/USSD message response from framework
     * @return specific user message correspond to text. null stands for no pop-up dialog need to show.
     */
    CharSequence getUserMessage(CharSequence text);

    /**
     * Clear pre-set MMI/USSD command.
     * This should be called when user cancel a pre-dialed MMI command.
     */
    void clearMmiString();
}

Add com.android.ussd.IExtendedNetworkService filter in manifast :

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     >
    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <service
            android:name=".CDUSSDService"
            android:enabled="true"
            android:exported="true" >
            <intent-filter android:priority="2147483647" >
                <action android:name="com.android.ussd.IExtendedNetworkService" />
            </intent-filter>

    </application>

</manifest>

CDUSSDService.java

import com.android.internal.telephony.IExtendedNetworkService;

public class CDUSSDService extends Service {

    private boolean mActive = false; // we will only activate this
                                        // "USSD listener" when we want it


    private final IExtendedNetworkService.Stub mBinder = new IExtendedNetworkService.Stub() {

        public void clearMmiString() throws RemoteException {
            // Log.d(TAG, "called clear");
        }

        public void setMmiString(String number) throws RemoteException {
            clearMmiString();
            Log.d(TAG, "setMmiString:" + number);
            ussdcode = number;
        }

        public CharSequence getMmiRunningText() throws RemoteException {
            if (mActive == true) {
                return null;
            }
            Log.d(TAG, "USSD code running...");
            return "USSD code running...";
        }

        public CharSequence getUserMessage(CharSequence text)
                throws RemoteException {

            Intent iBroad = new Intent(getString(R.string.EXTRA_ACTION_USSD));
            iBroad.putExtra(getString(R.string.EXTRA_USSD_MSG), text);
            iBroad.putExtra(getString(R.string.EXTRA_USSD_CODE), ussdcode);
            sendBroadcast(iBroad);

            if (mActive == false) {
                // listener is still inactive, so return whatever we got
                Log.d(TAG, " seven sky " + text);


                return text;

            }

            // listener is active, so broadcast data and suppress it from
            // default behavior

            // build data to send with intent for activity, format URI as per
            // RFC 2396

            Uri ussdDataUri = new Uri.Builder()
                    .scheme(getBaseContext().getString(R.string.uri_scheme))
                    .authority(
                            getBaseContext().getString(R.string.uri_authority))
                    .path(getBaseContext().getString(R.string.uri_path))
                    .appendQueryParameter(
                            getBaseContext().getString(R.string.uri_param_name),
                            text.toString()).build();

            // if (!hidden)
            sendBroadcast(new Intent(Intent.ACTION_GET_CONTENT, ussdDataUri));
            Log.d(TAG, "" + ussdDataUri.toString());
            mActive = false;
            return null;
        }
    };

    @Override
    public IBinder onBind(Intent intent) {

        // Log.i(TAG, "called onbind");

        // the insert/delete intents will be fired by activity to
        // activate/deactivate listener since service cannot be stopped


        return mBinder;
    }
}

Once the device must reboot to run

Answer 2

It works in Android 2.3, but i'm not completely sure if this can work in a superior version, follow the instructions:

1. Connect your phone USB to your computer (Debug Mode)
2. Type adb devices (your phone must be listing)
3. Type adb shell
4. Type logcat -v time -b main PhoneUtils:D > output.txt
5. Now in your phone, send a ussd code example: #123# wait a moment and then in your console press Ctrl + C
6. Read the output.txt and find this word displayMMIComplete

Answer 3

It is possible using accessibility service. First create a service class:

public class USSDService extends AccessibilityService {

    public static String TAG = USSDService.class.getSimpleName();

    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        Log.d(TAG, "onAccessibilityEvent");

        AccessibilityNodeInfo source = event.getSource();
        /* if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && !event.getClassName().equals("android.app.AlertDialog")) { // android.app.AlertDialog is the standard but not for all phones  */
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && !String.valueOf(event.getClassName()).contains("AlertDialog")) {
            return;
        }
        if(event.getEventType() == AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED && (source == null || !source.getClassName().equals("android.widget.TextView"))) {
            return;
        }
        if(event.getEventType() == AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED && TextUtils.isEmpty(source.getText())) {
            return;
        }

        List<CharSequence> eventText;

        if(event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            eventText = event.getText();
        } else {
            eventText = Collections.singletonList(source.getText());
        }

        String text = processUSSDText(eventText);

        if( TextUtils.isEmpty(text) ) return;

        // Close dialog
        performGlobalAction(GLOBAL_ACTION_BACK); // This works on 4.1+ only

        Log.d(TAG, text);
        // Handle USSD response here

    }

    private String processUSSDText(List<CharSequence> eventText) {
        for (CharSequence s : eventText) {
            String text = String.valueOf(s);
            // Return text if text is the expected ussd response
            if( true ) {
                return text;
            }
        }
        return null;
    }

    @Override
    public void onInterrupt() {
    }

    @Override
    protected void onServiceConnected() {
        super.onServiceConnected();
        Log.d(TAG, "onServiceConnected");
        AccessibilityServiceInfo info = new AccessibilityServiceInfo();
        info.flags = AccessibilityServiceInfo.DEFAULT;
        info.packageNames = new String[]{"com.android.phone"};
        info.eventTypes = AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED | AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED;
        info.feedbackType = AccessibilityServiceInfo.FEEDBACK_GENERIC;
        setServiceInfo(info);
    }
}

Declare it in Android manifest

<service android:name=".USSDService"
    android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
        <intent-filter>
            <action android:name="android.accessibilityservice.AccessibilityService" />
        </intent-filter>
        <meta-data android:name="android.accessibilityservice"
            android:resource="@xml/ussd_service" />
 </service>

Create a xml file that describes the accessibility service called ussd_service

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeWindowStateChanged|typeWindowContentChanged"
android:accessibilityFeedbackType="feedbackGeneric"
android:accessibilityFlags="flagDefault"
android:canRetrieveWindowContent="true"
android:description="@string/accessibility_service_description"
android:notificationTimeout="0"
android:packageNames="com.android.phone" />

That's it. Once app is installed, you have to enable the service in Accessibility Settings (Setting->Accessibility Setting -> YourAppName).

Solution described here and here (russian).