What is the difference between
gone for the View visibility status?
This view is invisible, but it still takes up space for layout purposes.
This view is invisible, and it doesn't take any space for layout purposes.
From Documentation you can say that
View.GONE This view is invisible, and it doesn't take any space for layout purposes.
View.INVISIBLE This view is invisible, but it still takes up space for layout purposes.
Lets clear the idea with some pictures.
Assume that you have three buttons, like below
Now if you set visibility of Button Two as invisible (
View.INVISIBLE), then the output will be
And when you set visibility of Button Two as gone (
View.GONE) then the output will be
Hope this will clear your doubts.
For ListView or GridView there is an another difference, when visibility initially set to
Adapter's getView() function called
Adapter's getView() function didn't call, thus preventing views to load, when it is unnecessary
The view has to be drawn and it takes time.
The view doesn't have to be drawn.
I'd like to add to the right and successful answers, that if you initialize a view with visibility as
View.GONE, the view could have been not initialized and you will get some random errors.
For example if you initialize a layout as
View.GONE and then you try to start an animation, from my experience I've got my animation working randomly times. Sometimes yes, sometimes no.
So before handling (resizing, move, whatever) a view, you have to init it as
View.INVISIBLE to render it (draw it) in the screen, and then handle it.
when you make it Gone every time of compilation of program the component gets initialized that means you are removing the component from layout and when you make it invisible the component it will take the same space in the layout but every time you dont need to initialize it.
if you set Visibility=Gone then you have to initialize the component..like
eg Button _mButton = new Button(this);
_mButton = (Button)findViewByid(R.id.mButton);
so it will take more time as compared to Visibility = invisible.
View.INVISIBLE->The View is invisible but it will occupy some space in layout
View.GONE->The View is not visible and it will not occupy any space in layout
View.GONE = The view will not show and the rest of the views will not take its existence into consideration
View.INVISIBLE = The view will not show, but it will take its assigned space in the layout