You can send a USSD code by below code and also you need to add permission (This should be a run time permission after Marshmallow update)
<uses-permission android:name="android.permission.CALL_PHONE" />
String code = "*" + Uri.encode("#") + 456 + Uri.encode("#");
startActivity(new Intent("android.intent.action.CALL", Uri.parse("tel:" + code)));
And you can read USSD codes by AccessibilityService
Here is the example:
Service:
public class USSDService extends AccessibilityService {
private static final String TAG = "USSDService";
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
Log.d(TAG, "onAccessibilityEvent");
String text = event.getText().toString();
Log.d(TAG, text);
}
}
@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;
info.feedbackType = AccessibilityServiceInfo.FEEDBACK_GENERIC;
setServiceInfo(info);
}
}
AndroidManifest.xml :
<service android:name=".services.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/config_service" /> // created below
</service>
res/xml/config_service.xml :
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeAllMask"
android:accessibilityFeedbackType="feedbackSpoken"
android:accessibilityFlags="flagDefault"
android:canRetrieveWindowContent="true"
android:description="@string/accessibility_description"
android:notificationTimeout="100"
android:packageNames="com.cootf.sims"
android:settingsActivity="com.example.android.accessibility.ServiceSettingsActivity" />
Run the code --> Enable the accessibility through Settings --> Accessibility --> [Your app name] --> Enable. Job Done!
