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Android Build a Simple Android App Basic Android Programming Accessing Views in Code: Assigning Variables

Posted by Danika Guiley
Danika Guiley
1,247 Points

Can't find FactTextView

I set the mFactTextView as follows: mFactTextView = (TextView)findViewById(R.id.); It can not locate the FactTextView which I set in the global as follows: private TextView mFactTextView; I also set the prefix to m like in the video. I have also pressed 'Clean Project' which has been instructed in your other answers. Thank you

3 Answers

sukjae lee
sukjae lee
5,705 Points
sukjae lee
sukjae lee
5,705 Points

check res > layout > activity_fun_facts.xml. (in android view) should have [android:id="@+id/factTextView"] inside of [TextView]

think this as selector in html&css

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

There's probably an error in your layout file preventing it from being built, which is preventing R.id.factViewText from being generated and picked up.

Beatriz Fuentes
Beatriz Fuentes
2,207 Points
Beatriz Fuentes
Beatriz Fuentes
2,207 Points

make sure you have assigned an ID to the textview in the XML file or design view , once done make sure to use the same spelling , remember JAVA is case sensitive