Screens: Show and hide New Post button on scroll#599
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The button hides when the user is scrolling to view older posts, and reappears when the user is scrolling to view newer posts. Ref: TheBLVD#582
* Animation effect when the post button is shown or hidden based on scrolling. The button seems to "slide" in or out, and fades with alpha blending. The animation is also rate-limited to once per second, to prevent 'jerking' when a user is fidgeting around. * Use tableView:willDisplay:forRowAt: instead of scrollViewDidScroll: to change the post button state. This ensures that small adjustments to scroll don't make the post button change state, which can be distracting. * Update the shown index path when the view model updates.
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I have pushed a commit that also animates the change. |
We no longer use the contentOffset to toggle the post button state.
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The button hides when the user is scrolling to view older posts, and reappears when the user is scrolling to view newer posts.
Ref: #582