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Android

Posted by himabatavia
himabatavia
Courses Plus Student 561 Points

Crystal Ball Button Error

I have an error in MainActivity.xml, under mGetAnswerButton = (Button) findViewById(R.id.button1);

The error says:

Multiple markers on this line:

  • button 1 can not be resolved and is not a field
  • linebreakpoint: mainactivity [line 30, onCreate(Bundle)

How do i fix this?

Justin Horner
Justin Horner
Treehouse Guest Teacher
Justin Horner
Justin Horner
Treehouse Guest Teacher

Hello Hima,

Are you still having problems? I'd be glad to help if you're still stuck :)

1 Answer

Daniel Hartin
Daniel Hartin
18,106 Points
Daniel Hartin
Daniel Hartin
18,106 Points

Hi Hima

The line of code you have posted appears correct, there are 4 things to check.

  • Make sure you have imported android.widget (just press Ctrl + Shift + O, if using eclipse).

  • The code snipet above does not declare your variable so make sure somewhere before this line is executed you have the code Button mGetAnswerButton;

  • Make sure your XML file changes are saved before referencing them in JAVA code and if necessary rebuild/clean the project to make sure everything is updated.

  • Lastly (and most importantly) make sure in your XML layout file you have a Button element with the id button1. It should look something like this:

<Button
  android:layout_width="wrap_content"
  android:layout_height="wrap content"
  android:id="@+id/button1"/>

I hope after checking these 4 things you resolve your error, however if you are still having problems please paste all your Java and XML code and I will be happy to take a look.

Daniel