Android Question accessibility service and ussd interception

[Hamied Abou Hulaikah]

Hello
I want to intercept ussd response , a lot of google play apps doing this.
I googled & get what I want exactly, anyone convert it to b4a approach please ..
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);
}
}

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" />

and this

<?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" />

How to use these in B4A ?

 

[DonManfred]

There is a Accessibility Library available as far as i know. Or maybe it is just beta. don´t remember.

It´s from @moster67 ...

Away from that i can´t help

 

[Hamied Abou Hulaikah]

Accessibility Library

I searched, no such library exist yet

 

[DonManfred]

I searched, no such library exist yet

It does. Use the forumsearch
It is the 5th result