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sahil shokeen
1,579 Pointsonclick confusion!!!
View.OnClickListner() and View.setOnClickListner(new View.OnClickListner) how they work and when they are invoked??
2 Answers
Jon Kussmann
Courses Plus Student 7,254 PointsOften times in an Android application, you want your application to behave a certain way when a user clicks on something, like a button.
To define what happens when that button is clicked on, you "set" the onClickListener to that view (the view being the button in this case). When you instantiate the listener, you must override the "onClick" method. What happens is the application is "waiting" for the user to click that button and when it does, it will run the code within the "onClick" method.
sahil shokeen
1,579 Pointscan u please explain in detail about these methods how they internally work please!!!
sahil shokeen
1,579 Pointssahil shokeen
1,579 Pointsbut why there is a parameter in view.setOnClickListner?
Jon Kussmann
Courses Plus Student 7,254 PointsJon Kussmann
Courses Plus Student 7,254 PointsCalling View.setOnClickListener assigns a new listener to that object, so you need to tell it which listener you want. You do this by adding it as a parameter.
You can in theory have a few different listeners, so you need to specify which one you want.