Develop Reference

How to create several translate animation sequentially in android?

I' m new in anroid programming and i want to create sequential translate animations. I have ten images, what i want is as follows:
I choose image randomly and create translate animation for this image. Also, same image can exist more than one times on the screen and these translate animations shouldn' t wait other animations end. In other words, more than one animations should exist on screen at the same time.
I fight with this on two days and still I could not do what I wanted. If you give an idea or a piece of codes, i will be gratefull.
Thanks in advance.

Achartengine pan with animation

I want to make the chart of achartengine to smoothly move while panning, and animate while I programmatically changes axis display range. Searching through the documents, there seems to be no provided function to achieve this. Is there a way to do this?

You can definitely do this by changing the display area in a separate thread than the UI one, calling mChartView.repaint(), waiting for 20 ms or so then repeat the above.

android view animation cycleinterpolator

I have a view. I want to change its alpha from 1 to 0 and then repeat for a number of time.
I believe I have to use animation for that. But I don't know how to use the CycleInterpolator in android. Might anyone show me a code sample? I have gotten as far as
CycleInterpolator ci = new CycleInterpolator(5f);
ViewPropertyAnimator anim = myView.animate();
anim.alpha(0);
anim.setDuration(10000);
anim.setInterpolator(ci);
EDIT
the code above works, but it is very brisk. All I see is blinking. I want the view to fade out and then back in very slowly about once every second or two or three. I really need the transition to be smooth and slow and visible to the human eye.

Have you tried
myview.animate().alpha(0).setInterpolator(new CycleInterpolator(<Number of cycles>))
You can also find all of the different methods of a ViewPropertyAnimator here.

Smooth animation transition logic in Android OpenGL

I have an Android app developed using openGL and LibGDX.
Right now I do not know the strategy on how to code smooth transitions among a set of animations.
Example:
We have a cat actor.
Its animation consists of a set of key frames paired with transform matrix.
We have 5 preset animations for this cat:
idle, walk left, walk right, jump and lie down.
How can we transition from lets say
walk right => lie down
walk right => walk left
while the walk right animation is playing half way?
Right now once an animation starts, it needs to be played for 1 full cycle until the end.
This is so that the cat can move back into its neutral position.
Thus it can play the next animation which starts from a neutral position.
The final result is unnatural and jerky.
What approach should I use to tackle this problem?

Just starting the next Animation even when the previous one isn't finished is the Standard way. It looks good, do not wait for the first Animation to finish.
If you still think it looks unnatural. Then you must create a very fast "transition frame" between animations that makes it look more natural. Not worth the effort if you ask me, just try it the first way :)

Is there a way to randomize Android simple frame animation?

Looking for assitance on simple Android frame animation.
I am able to easily animate frame by frame with many of the examples found here and online in general.
My question is, from the animation-list within my animation I have 9 frames of drawables (0-8). Can I somehow randomize the loop of this animation upon each loop?
I was able to find android:animationOrder="random", but this merely randomizes the start of the loop.
I would like to randomize the sequence of the items within animation-list so that each run of the animation appears different from the last.
I am animating a eyes that blink, and I do not want the same 0-8 frames (items) of the animation-list to simply repeat themselves.
Does anyone have any tips on how to achieve this effect?
I would even like to randomize the duration (android:duration) for each item.
This would yield a truly random looking blinking effect.
Thanks!