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Miles Torres
Miles Torres
2,316 Points

What does this logcat error mean?

ComponentInfo{com.example.milespc.funfacts/com.example.milespc.funfacts.ActivityFunFacts}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

Mazen Halawi
Mazen Halawi
7,806 Points

seems your button is not referenced correctly in your java code. check your id or paste your xml code of the button you are clicking and how you are referencing it in java.

another solution: add android:onClick="btnClick_onClick" in xml for that button // you can call the method whatever you want in java create a

public void btnClick_onClick(View v) {


and put your code inside to test.