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
Related
I'm porting one of my iOS apps over to Android (which I'm pretty new to), and I was wondering how I would draw this shape in Android using XML:
I want to recreate the shape (the white object) at the bottom of a tableView. The image attached is a screenshot of the bottom of a UITableView.
Any help would be greatly appreciated if you need any more info just let me know.
Thanks
EDIT:
Sorry I wasn't totally clear, I'm actually trying to recreate the slight arch at the bottom of the table. Since it's so slight, you may not be able to see it with a quick glance.
It seams to me that you want to "lift" your table up a little bit. If so, you have to implement this attribute to your tableView:
android:elevation="2dp"
or in java:
tableview.setElevation(2);
My opinion when reading this question: Stop trying to make your android apps look like iOS apps !!!
If you still want to do it.
Just have the background color for your activity to that color and set the layout_margin to either 2 or 4.
It should give you your desired effect.
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 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
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 was checking on the android api demo and i came across the 3D transition that takes from one VIEW to another, so i'm wondering if it can be applied on activities?
U can apply 3d transition for layouts/activities also. check this tutorial, this will help u
Remember this example works for imageviews and u shd do it for layouts.
http://www.inter-fuser.com/2009/08/android-animations-3d-flip.html