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There's a few issues with this though. Take various animations such as the one on the toolbar that some Google apps have (the arrow that spins into a hamburger

There's a few issues with this though. Take various animations such as the one on the toolbar that some Google apps have (the arrow that spins into a hamburger and back again). Easy to do if you're just loading different fragments into a Framelayout, impossible to do with activities as you reload the entire toolbar on an activity change. It's a general problem in the Android world. Some things can only be done as an activity whilst others as fragments. In fact this is a problem even on Googles own apps. Right now if i tap things in the nav panel of the Gmail app it's a crap shoot whether i open a fragment or activity. Things like inbox/sent are loaded as fragments. Things like settings are loaded as activities with a completely different loading in animation. Help is different again. Lots of different ways of loading in a view all coming from options in the same menu. It's pretty fucked up form a UI perspective.

saturn_vk 10y ago
> There's a few issues with this though. Take various animations such as the one on the toolbar that some Google apps have (the arrow that spins into a hamburger and back again). Easy to do if you're just loading different fragments into a Framelayout, impossible to do with activities as you reload the entire toolbar on an activity change. I haven't even found an easy way to control the state of that animation, even if I use only one activity.
- gagege 10y ago
  There are benefits other than cross-platform development to using web views or React Native or something that gets rid of the Android guts.
- AReallyGoodName 10y ago
  Well it's easy enough to transition into arrow and hamburger ObjectAnimator arrowRotateAnim = ObjectAnimator.ofFloat(mDrawerArrowDrawable, "progress", 0.0f, 1.0f); arrowRotateAnim.setDuration(Constant.NAV_ARROW_TIME); arrowRotateAnim.start(); and vice versa on progress where mArrowDrawable is a DrawerArrowDrawable object. I set NAV_ARROW_TIME to 300 and it seems the same as what google has.

saturn_vk 10y ago

> There's a few issues with this though. Take various animations such as the one on the toolbar that some Google apps have (the arrow that spins into a hamburger and back again). Easy to do if you're just loading different fragments into a Framelayout, impossible to do with activities as you reload the entire toolbar on an activity change. I haven't even found an easy way to control the state of that animation, even if I use only one activity.

gagege 10y ago
There are benefits other than cross-platform development to using web views or React Native or something that gets rid of the Android guts.
AReallyGoodName 10y ago
Well it's easy enough to transition into arrow and hamburger ObjectAnimator arrowRotateAnim = ObjectAnimator.ofFloat(mDrawerArrowDrawable, "progress", 0.0f, 1.0f); arrowRotateAnim.setDuration(Constant.NAV_ARROW_TIME); arrowRotateAnim.start(); and vice versa on progress where mArrowDrawable is a DrawerArrowDrawable object. I set NAV_ARROW_TIME to 300 and it seems the same as what google has.