Develop Reference

Can I rotate a spinner? Androidstudio

simple question I cant find the answer anywhere, is there a way to rotate a spinner, without rotating screen or anything just create a spinner which is rotated 90 degrees?
Thanks in advance.

On API Level 11+, you are welcome to rotate any View via android:rotation in your layout XML or setRotation() in Java. Whether this will give you something that your users will like, I cannot say.

Programmatically you can try something like this -
RotateAnimation animation = new RotateAnimation(fromDegrees, toDegrees, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
// Adding the time needed to rotate the image
animation.setDuration(250);
// Set the animation to stop after reaching the desired position. Without this it would return to the original state.
animation.setFillAfter(true);
//Then set the animation to your view
view.startAnimation(animation);

Circular scale animation

I'm trying to achieve an animation which scales over a view like this:
At the moment I'm using a scale animation loaded from xml:
This in action looks like this:
It scales more like a square.
I was using ObjectAnimator/ValueAnimator with properties before.
Some devices had specific problems with measuring heights for scaling so I reverted to using xml definitions.
Does anyone have any clue how to achieve the above?

you must define programmatically you ScaleAnimation.
first get radius of your circle(ImageView) at first position(before start Animation).
for get radius you can get width of your imageview and then division to 2.
second you must get width and height of your square.
third do it :
anim_to = (width_square + height_Square) / radius_circle;
finally set "anim_to" to your ScaleAnimation and start animation like this:
ScaleAnimation my_reveal = new ScaleAnimation(1,anim_to, 1,anim_to, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
my_reveal.setInterpolator(new DecelerateInterpolator());
my_reveal.setDuration(500);
my_circle.startAnimation(my_reveal);
sorry for my bad ENG ;)

How to rotate a drawable by ObjectAnimator?

Alphaing a drawable work well like this:
if(mAlphaAnimation == null){
mAlphaAnimation = ObjectAnimator.ofFloat(this, "alpha", 0.0f,1.0f).setDuration(TARGET_ANIM_ALPHA_DURATION);
mAlphaAnimation.setInterpolator(new AccelerateDecelerateInterpolator());
mAlphaAnimation.setStartDelay(TARGET_ANIM_ALPHA_DELAY_BASE*power);
mAlphaAnimation.setRepeatCount(ValueAnimator.INFINITE);
mAlphaAnimation.setRepeatMode(ValueAnimator.REVERSE);
mAlphaAnimation.addUpdateListener(this);
}
But if I want rotate a drawable like below , it don's work.
private void createRotateAnim(float fromDegress,float toDegress,int duration){
if(mRotateAnimation == null){
mRotateAnimation = ObjectAnimator.ofFloat(this, "rotation",fromDegress,toDegress).setDuration(duration);
mRotateAnimation.setStartDelay(100);
mRotateAnimation.setInterpolator(new AccelerateInterpolator());
mRotateAnimation.addUpdateListener(this);
}
}
Anyone can help me to fix this issue, or these is any other way to create a rotation drawable animation .
I am sorry to my poor English.

Try with ObjectAnimator instead.
ImageView imageview = (ImageView)findViewById(R.id.image);
ObjectAnimator imageViewObjectAnimator = ObjectAnimator.ofFloat(imageview ,
"rotation", 0f, 360f);
imageViewObjectAnimator.setDuration(1000); // miliseconds
imageViewObjectAnimator.start();
EDIT
Since this question draw some attention let me to explain why to use ObjectAnimator instead of other Transition animators
The thing about using ObjectAnimator is that it's moving both the visible and the clickable area of the item, if you use another animation method, for example Transition Animation or some other Animators, and let's say if you want to move the Button from the bottom left of the screen to the top left, it will only move the visible area but not the Button itself, the clickable area will still be on the previous position, in this case the clickable area will still be on the bottom left instead of the top left where you moved the button.
If you do the same with ObjectAnimator, both the visible area, and the clickable area will move the the desired location.

Try this simple Rotation Animation applied to a image.
ImageView imageview = (ImageView)findViewById(R.id.myimage);
RotateAnimation rotate = new RotateAnimation(180, 360, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
rotate.setDuration(500);
imageview.startAnimation(rotate);
This answer is just for a sake of question, it is correct that Clickable area will be different than View's current position. Please check this question for making clickable area correct. Button is not clickable after TranslateAnimation

Android: use animation outside the view area

I have an xml with 12 image. for example 3*4 table, where each cell contains an image.
In the OnCreate I write animation every image:
AnimationSet set = new AnimationSet(true);
Animation animation = new TranslateAnimation(
Animation.ABSOLUTE, -300.0f, Animation.START_ON_FIRST_FRAME, 0.0f,
Animation.ABSOLUTE, -800.0f, Animation.START_ON_FIRST_FRAME, 0.0f);
animation.setFillBefore(true);
animation.setFillAfter(true);
animation.setFillEnabled(true);
animation.setDuration(5000);
I want to start the animation from the top left of the screen and to end the animation to real position. But the animation is only use the image or cell region. Is there any solution to the animation, use the whole screen?

If they're all under the same parent view, you can set the parent's clipChildren attribute to false, which would allow the animation to extend beyond its own constraints (as long as it still remains within the boundaries of its parent):
android:clipChildren="false"

Android textView animation at the same time

I want to be able to do this: the TextView to change its size (to get bigger) and to change its alpha value (from invisible to become visible). All of this using Animation and have this changes happen at the same time.
For that purpose I come up with this code:
AnimationSet set = new AnimationSet(true);
Animation animation = new AlphaAnimation(0.0f, 1.0f);
animation.setDuration(2000);
animation.setStartOffset(300);
animation.setFillAfter(true);
set.addAnimation(animation);
animation = new ScaleAnimation(1.0f, 2.0f, 1.0f, 2.0f);
animation.setDuration(2000);
animation.setStartOffset(300);
animation.setFillAfter(true);
set.addAnimation(animation);
text.startAnimation(set);
The problem with this is that I want this transformation to remain. But the textView keeps coming back to its original size at the end. (But it remains visible - alpha = 1.0f). Am I doing something wrong? Please, if someone knows how can I make this work, help me. Thank u in advance!

I've found an answer for the problem five minutes after actually posting it. You should not define setFillAfter for the individual animations that you define in the animation set. You should only define setFillAfter ON the animation set itself