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6,697 PointsWhere does the weather.formatted time attribute come from?
I've watched the video's a couple of times now. but formattedTime is never declared anywhere (only a method 'getFormattedTime'). So how does the binding know what formattedTIme is?
1 Answer
Ken Alger
Treehouse TeacherRemi -
This is a great question.
If we take a look inside activity_main.xml
we have defined a variable, weather
that accesses the CurrentWeather.java
class. This is how we are able to get data from there with things like weather.temperature
. The data binding library translates the Getters
(getTime(), getTemperature(), etc) from the class. Since we defined our own function to return time in a specific format in getFormattedTime()
, the data binding library allows us to get that information in the layout with our defined variable name and the data item we want, with dot notation. Therefore, we can access our formatted time value in the layout with weather.formattedTime
.
I hope that makes sense. Please post back if it does not.
Best wishes,
Ken W. Alger