Attempt to invoke virtual method 'java.lang.String com.google.android.gms.auth.api.signin.GoogleSignInAccount.getIdToken()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
3984
How to fix 'android.os.NetworkOnMainThreadException'?
55274
Java: Exception itself is null
130819
Nullpointerexception while setting a bean
98080
Android: Cannot invoke toString() on the primitive type int
101059
Android - android.os.NetworkOnMainThreadException
96453
Caught Throwable or Exception is null
32065
Attempt to de-reference a null object: Trigger
78586
Why doesn't "System.out.println" work in Android?
130334
VerifyError in web-service operation using SOAP only in Android 4.2?
70532
NullReferenceException after POST
21340
Adding  causes java.lang.IllegalStateException: Cannot create a session after the response has been committed
88384
NoSuchMethodError error for getActionBar() (API-8)
23999
NullPointerException while parsing XML callout response
68787
Why The constructor ArrayAdapter(new View.OnKeyListener(){}, int, String[]) is undefined
35129
Why does String.valueOf(null) throw a NullPointerException?
8793
Android and getting a view with id cast as a string