Android Material Design-等待用户输入

Question

I know we can produce very powerful animation effects in Android using AnimationUtil and xml animation files but would this be considered a good practice for Material Design, specifically for a case when we wait for user do do something.

For example, I have activity with single image or image button on it. User lands on this activity and is expected to tap on that image. I want to give some feedback to user rather than having just a label like "Click here".

I could make a nice animation using AnimationUtil class and xml file in res/anim folder. But would that be how material design recommends it doing? I looked through Material Design guidelines and could not find anything specific to "animation effect waiting for user input" but the screenshot below makes me believe using animation does not violate Material Design guidelines.

Any suggestions?

I am talking about something like this example

Answer 1

There are no specific guidelines against animating buttons while waiting for user input. But you would want to make sure that the animation makes sense in the context of your application. For instance, if you are designing a game, then it would be great to have a button with a little game character on it jumping up and down trying to get the user to start the tutorial for their first time. But if you are designing an email app or a feedreader or something, it would obviously be pretty distracting to have icons and buttons flashing, wiggling, and spinning all over the place. So with that in mind, you would want to make sure the animation is 1) needed, 2) not distracting, 3) fits with the design of the rest of your app.

There are plenty of Stackoverflow questions that show how to do various animations on buttons, so just search for the one you want to do. For instance, if you just wanted to do a simple pulsing alpha transition, this question shows how to do that perfectly: android - How can I make a button flash?