I searching for a way to animate views via xml, I am really lost in this part of UI programming.
Can anybody explain to me step by step how to do this?
You can animate android views by using Animation resources.
With xml animations you can set different properties e.g duration, rate of change (interpolator).
AndroidHive has a very good tutorial with a nice set of animations
http://www.androidhive.info/2013/06/android-working-with-xml-animations/
From my experience with xml animations, you won't know what you want until you've played around with different properties.
http://developer.android.com/guide/topics/resources/animation-resource.html
Update:
Interpolators as well are also important,they allow you to achieve a lot more smoothness. But misusing them can also be expensive so be make sure its necessary.
http://developer.android.com/reference/android/view/animation/Interpolator.html
This blog also gives a quick peek into the actual effects of interpolators:
http://android-er.blogspot.co.uk/2012/02/various-effect-of-interpolator-in.html
Related
I want to make awesome scroll effect. I've found a couple of examples:
http://lab.hakim.se/scroll-effects/
but I have no idea how to such behaviour. I consider to make it on my own, but it will be good to have a library which I can use. Just need some starting point. Any ideas?
I've used this library a few times and seemed good but seems to be in need of an update since some of the delete animations have problems. But the scrolling animations should still be good:
https://github.com/wasabeef/recyclerview-animators
How would I make animations like this and this? I couldn't find any result on Google showing me how to do it. I have absolutely no idea of how to go about making such animations.
Any help would be greatly appreciated.
Animation in the links implemented with animated gifs/jpegs. In order to make such animations in Android you will have to:
Create individual frames of your animations and save them in .png files
Create AnimationDrawable and add your frames there
Use your new drawable where you'd like to see an animation
Edit: different way was described here
I know basic level Android, but haven't had done animation before. Moreover, I don't have any clue as to how can I create custom Geometrical objects like triangle, Hexagon, etc.
Moreover, I don't know anything about doing animation in Android. I'd like to have relevant tutorial links or blogs which can help understand the basics and preferable a sample code for "Rotation" animation.
Thanks in advance.
http://code.google.com/p/nehe-android/ (the code is best documentation ^_^)
but it is for open gl custom objects on top of your view/surface view, it is commonly used in games.
If you want to do just rotation for Button, there are http://developer.android.com/reference/android/view/animation/Animation.html and subclasses of it (RotateAnimation and so on), you can even do a custom one. By this way you can do awesome user experience for application which use default android controls.
Cheers
I'm starting out with Android development, and I'm kind of stuck. Basically, I have a layout with dynamically added ImageViews, and I want to have the ImageViews change their image every once in a while. However, I'd like to add some sort of transition or changing animation, like a flip or a flash.
I don't really know where to even start to look for an answer to this question. Any help is greatly appreciated.
The android framework has this totally covered:
http://developer.android.com/guide/topics/graphics/view-animation.html
Basically, you are looking to define "tween" animations between your drawables (imageviews). After you define your animations you can even define a set of drawables to show one after the other using frame-animation.
Check out the following for all the gory details:
http://developer.android.com/guide/topics/resources/animation-resource.html
I have been looking for a easy way to add borders to custom made Views (Compounds or whatever), and the only answer I found was that there is no built-in support for that. Instead there are suggestions that you should add Views on top/below the View you want borders on and a bunch of others really messy ways to get borders.
Coming from the .NET-environment that is pretty brutal to have to do ugly workaround and "hacks" to get something as simple as borders.
Thus, I want to suggest that feature to the Android team. I'm not sure how they can have missed it, but it is surely missed =)
So, is there any official way to suggest a feature in the SDK/framework? I have looked around a bit, but can't comment on their blogs, no e-mail addresses as far as I can see.
Put your suggestion at google code.
You can easily create a Drawable subclass that draws whatever border you want and reports the padding for that border, and sets it as the background of the view you want to have drawn with a border. Or set it on a FrameLayout to have the border placed around the other views inside of the frame.
sorry, 8 years later. At the link below there's a Feedback section with a link to Feature Requests
https://source.android.com/source/community.html