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Android Build a Simple Android App (2014) Basic Android Programming Adding the onClick() Method

Posted by Cathy Zhou
Cathy Zhou
452 Points

My Android Studio cannot recognize factTextView nor showFactButton. It appears red instead of purple. Why is that?

What am I doing wrong? What should I add?

David Postlethwaite
David Postlethwaite
9,355 Points

Cathy, Can you show your code for the onCreate class. If its red normally its a problem with the way you assigned the variable.

Cathy Zhou
Cathy Zhou
452 Points

David, thanks for responding to me, my code is as follows: final TextView factLabel = (TextView) findViewById(R.id.factTextView); Button showFactButton = (Button) findViewById(R.id.showFactButton);

I believe I did exactly what the instructor did in the video, so I'm really unsure why studio can't recognize factTextView and showFactButton.

3 Answers

David Postlethwaite
David Postlethwaite
9,355 Points
David Postlethwaite
David Postlethwaite
9,355 Points

Cathy, Check the id's in the activity_fun_facts.xml(the layout). In this file check the id's for the button and text view making sure the are spelled the same.

android:id="@+id/factTextView" android:id="@+id/showFact"

Cathy Zhou
Cathy Zhou
452 Points
Cathy Zhou
Cathy Zhou
452 Points

Thanks! I think that was the issue, which makes sense.. now my program is having trouble resyncing everything.. so it's still red...

David Postlethwaite
David Postlethwaite
9,355 Points
David Postlethwaite
David Postlethwaite
9,355 Points

Your welcome, try building a clean project by selecting Build menu and then selecting Clean Project.

If you need any more help please let me know and if this has solved the problem don't forgot to mark best answer so everyone knows the questions has been answered.