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amit-schwartz-u / rooMe

Apache License 2.0
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BUG: app crashes with java.lang.NullPointerException #175

Closed iporat08 closed 4 years ago

iporat08 commented 4 years ago

Every now and then when I open the app it crashes with the following error:

2020-06-27 21:55:13.300 22305-22305/com.example.roome E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.roome, PID: 22305 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.roome/com.example.roome.MainActivityApartmentSearcher}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.firebase.database.DataSnapshot com.google.firebase.database.DataSnapshot.child(java.lang.String)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2957) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6944) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.firebase.database.DataSnapshot com.google.firebase.database.DataSnapshot.child(java.lang.String)' on a null object reference at com.example.roome.FirebaseMediate.getApartmentSearcherUserByUid(FirebaseMediate.java:216) at com.example.roome.MainActivityApartmentSearcher.getCurrentApartmentSearcherUser(MainActivityApartmentSearcher.java:279) at com.example.roome.MainActivityApartmentSearcher.onCreate(MainActivityApartmentSearcher.java:68) at android.app.Activity.performCreate(Activity.java:7183) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2910) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3032)  at android.app.ActivityThread.-wrap11(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)  at android.os.Handler.dispatchMessage(Handler.java:105)  at android.os.Looper.loop(Looper.java:164)  at android.app.ActivityThread.main(ActivityThread.java:6944)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374) 

ShaharBirzon commented 4 years ago

yes this is a problem that occurs when running the app again using the green "play" button in android studio, when you already have a firebase user. We reccomend clearing the data of the application before doing that, or just run it again using the "restart button" (right next to the regular "run" button)