sorry I'm beginner when i build the app it show me that error
String types not allowed (at 'android:text Color Primary' with value 'TITLE_COLOR_GOES_HERE').
If you want to use some color there are two ways :
Either you can directly use colorcode
yourTextView.setTextColor(Color.RED);
Or you can define some color in your colors.xml file in resource and use it
yourTextView.setTextColor(colors.red);
While setting color , you need to either define that color name as string in your colors.xml file in your resources folder (res) or use like Color.RED or your preferable color