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nandan-desai-extras / PrivacyBreacher

an app built to showcase the privacy issues in Android operating system
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App crashing sometimes when clicking on "Phone Activity Monitor" #3

Closed NandanDesai closed 4 years ago

NandanDesai commented 4 years ago

When clicked on "Phone Activity Monitor" button immediately after opening the app, the app crashes with the following error:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: io.nandandesai.privacybreacher, PID: 22850
    java.lang.RuntimeException: Unable to start activity ComponentInfo{io.nandandesai.privacybreacher/io.nandandesai.privacybreacher.PhoneMonitorActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.MutableLiveData.observe(androidx.lifecycle.LifecycleOwner, androidx.lifecycle.Observer)' on a null object reference
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2928)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3063)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1823)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:198)
        at android.app.ActivityThread.main(ActivityThread.java:6729)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.MutableLiveData.observe(androidx.lifecycle.LifecycleOwner, androidx.lifecycle.Observer)' on a null object reference
        at io.nandandesai.privacybreacher.PhoneMonitorActivity.onCreate(PhoneMonitorActivity.java:37)
        at android.app.Activity.performCreate(Activity.java:7136)
        at android.app.Activity.performCreate(Activity.java:7127)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1272)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2908)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3063) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1823) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:198) 
        at android.app.ActivityThread.main(ActivityThread.java:6729) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)