AWARE-LIGHT crashes when enabling accessibility before starting a study

[EcZww]

Description

The app crashes with a java.lang.NumberFormatException when trying to enable accessibility services before starting a study. This issue occurs due to an empty string being passed to Long.parseLong() in the onAccessibilityEvent() method of the aware-core/src/main/java/com/aware/Applications.java class (line 196).

int criteria = (int) Long.parseLong(Aware.getSetting(getApplicationContext(), Aware_Preferences.PACKAGE_SPECIFICATION));

Steps to Reproduce

• Reinstall and launch the app, and allow all the permissions.
• Enable app accessibility services before starting a study.
• Observe that the app crashes.

Device

• Samsung S20+ with API level 33 (Android 13)
• Android Virtual Emulator with level API 34
• Android Virtual Emulator with level API 28

Error Message

FATAL EXCEPTION: main
                                                                                                    Process: com.aware.phone, PID: 7142
                                                                                                    java.lang.NumberFormatException: For input string: ""
                                                                                                    	at java.lang.Long.parseLong(Long.java:761)
                                                                                                    	at java.lang.Long.parseLong(Long.java:876)
                                                                                                    	at com.aware.Applications.onAccessibilityEvent(Applications.java:196)
                                                                                                    	at android.accessibilityservice.AccessibilityService$2.onAccessibilityEvent(AccessibilityService.java:2744)
                                                                                                    	at android.accessibilityservice.AccessibilityService$IAccessibilityServiceClientWrapper.lambda$onAccessibilityEvent$2(AccessibilityService.java:2930)
                                                                                                    	at android.accessibilityservice.AccessibilityService$IAccessibilityServiceClientWrapper.$r8$lambda$09cnCCQeC7txVafv5NeCrjYkmcY(Unknown Source:0)
                                                                                                    	at android.accessibilityservice.AccessibilityService$IAccessibilityServiceClientWrapper$$ExternalSyntheticLambda8.run(Unknown Source:6)
                                                                                                    	at android.os.Handler.handleCallback(Handler.java:958)
                                                                                                    	at android.os.Handler.dispatchMessage(Handler.java:99)
                                                                                                    	at android.os.Looper.loopOnce(Looper.java:205)
                                                                                                    	at android.os.Looper.loop(Looper.java:294)
                                                                                                    	at android.app.ActivityThread.main(ActivityThread.java:8177)
                                                                                                    	at java.lang.reflect.Method.invoke(Native Method)
                                                                                                    	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
                                                                                                    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)

Possible Reason

Before importing the study config, Aware_Preferences.PACKAGE_SPECIFICATION will be the empty string. When onAccessibilityEvent() is called before starting a study, the app will crash with a java.lang.NumberFormatException

Possible Solution

• Add a check to ensure that the string is not empty before parsing it as a long in the onAccessibilityEvent() method.
• Add default value for criteria