Acticvity.onWindowFocusChanged( hasFocus == true ) is what I use in the rare cases where I need it.
On Sep 28, 6:21 am, Philipp Comans <[email protected]> wrote: > Hi, > I have a FrameLayout in my Activity of which I need to know the size in > pixels at runtime. > Although getWidth() and getHeigh() return 0 for any(?) ViewGroup without any > children, I figured out that I can use the functions getMeasuredWidth() > and getMeasuredHeight() to get the actual size on screen after > the FrameLayout has become visible. > > As far as I know there is no Activity callback that gets called after > everything in the Activity (including the FrameLayout) is visible to the > user. Before that point in time however, getMeasuredWidth() > and getMeasuredHeight() also return 0. > > I am wondering that the preferred way of getting the size of that view at > runtime are. I came up with two possible solutions: > > Overwriting onWindowFocusChanged() in the Activity: this is a default > Android callback that not only gets called after the Activity is visible but > also after anything else has taken the focus. It seems to get me where I > want but it seems not very elegant. > > Another option would be to make my Activity implement a custom interface > called OnSizeChangedListener, then overwrite the onSizeChanged of the > FrameLayout to notify the OnSizeChangedListener of any changes in size. This > seems to only get called when the window size actually changes. However, I > am a bit unsure if it is good practice to implement a new listener for this. > > What approach would you suggest? > > Thanks, > > Philipp -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
