VOIP USSD ANDROID

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by Romell Dominguez

Target Development High Quality:

Interactive with ussd windows, remember the USSD interfaces depends on the System Operative and the manufacturer of Android devices.

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USSD LIBRARY

Implementations

Add the following dependency in your app's build.gradle configuration file:

• Writing a config xml file from here to res/xml folder (if necessary), this config file allow to link between Application and System Oerative:

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    .../>

Application

Puts dependencies on manifest, into manifest put CALL_PHONE, READ_PHONE_STATE and SYSTEM_ALERT_WINDOW:

    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

Add service:

java
    <service
        android:name="com.romellfudi.ussdlibrary.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>

kotlin
    <service
        android:name="com.romellfudi.ussdlibrary.USSDServiceKT"
        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>

How use:

First you need an hashMap from detect witch USSD' response contains the login and error messages

map = new HashMap<>();
map.put("KEY_LOGIN",new HashSet<>(Arrays.asList("espere", "waiting", "loading", "esperando")));
map.put("KEY_ERROR",new HashSet<>(Arrays.asList("problema", "problem", "error", "null")));

map = HashMap()
map["KEY_LOGIN"] = HashSet(Arrays.asList("espere", "waiting", "loading", "esperando"))
map["KEY_ERROR"] = HashSet(Arrays.asList("problema", "problem", "error", "null"))

Instance an object ussController with context

USSDApi ussdApi = USSDController.getInstance(context);
ussdApi.callUSSDInvoke(phoneNumber, map, new USSDController.CallbackInvoke() {
    @Override
    public void responseInvoke(String message) {
        // message has the response string data
        String dataToSend = "data"// <- send "data" into USSD's input text
        ussdApi.send(dataToSend,new USSDController.CallbackMessage(){
            @Override
            public void responseMessage(String message) {
                // message has the response string data from USSD
            }
        });
    }

    @Override
    public void over(String message) {
        // message has the response string data from USSD or error
        // response no have input text, NOT SEND ANY DATA
    }
});

ussdApi.callUSSDOverlayInvoke(phoneNumber, map, object : USSDController.CallbackInvoke {
    override fun responseInvoke(message: String) {
        // message has the response string data
        var dataToSend = "data"// <- send "data" into USSD's input text
        ussdApi.send("1") { // it: response String
                // message has the response string data from USSD
        }
     }

    override fun over(message: String) {
        // message has the response string data from USSD or error
        // response no have input text, NOT SEND ANY DATA
    }
})

if you need work with your custom messages, use this structure:

ussdApi.callUSSDInvoke(phoneNumber, map, new USSDController.CallbackInvoke() {
    @Override
    public void responseInvoke(String message) {
        // first option list - select option 1
        ussdApi.send("1",new USSDController.CallbackMessage(){
            @Override
            public void responseMessage(String message) {
                // second option list - select option 1
                ussdApi.send("1",new USSDController.CallbackMessage(){
                    @Override
                    public void responseMessage(String message) {
                        ...
                    }
                });
            }
        });
    }

    @Override
    public void over(String message) {
        // message has the response string data from USSD
        // response no have input text, NOT SEND ANY DATA
    }
    ...
});

ussdApi.callUSSDOverlayInvoke(phoneNumber, map, object : USSDController.CallbackInvoke {
    override fun responseInvoke(message: String) {
        // first option list - select option 1
        ussdApi.send("1") { // it: response response
                // second option list - select option 1
                ussdApi.send("1") { // it: response message
                        ...
                }
        }
    }

    override fun over(message: String) {
        // message has the response string data from USSD
        // response no have input text, NOT SEND ANY DATA
    }
    ...
})

for dual sim support

ussdApi.callUSSDInvoke(phoneNumber, simSlot, map, new USSDController.CallbackInvoke() {
    ...
}

ussdApi.callUSSDOverlayInvoke(phoneNumber, simSlot, map, object : USSDController.CallbackInvoke {
    ...
}

Static Methods

In case use at android >= M, you could check previusly permissions, callInvoke and callUSSDOverlayInvoke methods check eneble too:

 # check if accessibility permissions is enabled or not
    ussdApi.verifyAccesibilityAccess(Activity)
 # check if overlay permissions is enabled or not
    ussdApi.verifyOverLay(Activity)

Overlay Service Widget (not required)

A huge problem working with ussd is you can not invisible, disenable, resize or put on back in progressDialog But now on Android O, Google allow build a nw kind permission from overlay widget, my solution was a widget call OverlayShowingService: For use need add permissions at AndroidManifest:

<uses-permission android:name="android.permission.ACTION_MANAGE_OVERLAY_PERMISSION" />

Using the library you could use two ways:

SplashLoadingService

Add Broadcast Service:

<service android:name="com.romellfudi.ussdlibrary.SplashLoadingService"
         android:exported="false" />

Invoke like a normal service:

svc = new Intent(activity, SplashLoadingService.class);
// show layout
getActivity().startService();
ussdApi.callUSSDOverlayInvoke(phoneNumber, simSlot, map, new USSDController.CallbackInvoke() {
        ...
        // dismiss layout
        getActivity().stopService(svc);
        ...
}

svc = Intent(activity, OverlayShowingService::class.java)
// show layout
activity.startService(svc)
ussdApi.callUSSDOverlayInvoke(phoneNumber, map, object : USSDController.CallbackInvoke {
        ...
        // dismiss layout
        activity.stopService(svc)
        ...
}

EXTRA: Use Voip line

In this section leave the lines to call to Telcom (ussd number) for connected it:

ussdPhoneNumber = ussdPhoneNumber.replace("#", uri);
Uri uriPhone = Uri.parse("tel:" + ussdPhoneNumber);
context.startActivity(new Intent(Intent.ACTION_CALL, uriPhone));

ussdPhoneNumber = ussdPhoneNumber.replace("#", uri)
val uriPhone = Uri.parse("tel:$ussdPhoneNumber")
context.startActivity(Intent(Intent.ACTION_CALL, uri))

Once initialized the call will begin to receive and send the famous USSD windows

Cordova Plugin

• cordova-plugin-VoIpUSSD - Ramy Mokako

Contributors ✨

Thanks goes to these wonderful people (emoji key):

Romell D.Z. 福迪 💻

Abdullahi Yusuf 💻

Mohamed Hamdy Hasan 💻

Mohamed Daahir 💻

Ramy Mokako 🔌

Md Mafizur Rahman 💻

License

GameDealz is a Free Software: You can use, study share and improve it at your will. Specifically you can redistribute and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.