Develop Reference

How to animate an ImageButton into invisibility

This is a follow up to Animate ImageView from alpha 0 to 1.
I have an ImageButton that I want to animate into view when user does X and then animate out of view when user does Y. Animating into view is working fine. But animating out of view is kind of not working. In fact it is working, in that the animation happens. But after the button fades out of view, it pops back as VISIBLE. So I use this code
AlphaAnimation animation1 = new AlphaAnimation(0.9f, 0.0f);
animation1.setDuration(5000);
animation1.setStartOffset(1000);
animation1.setFillAfter(true);
animation1.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
GVLog.d(TAG,"MAKE INVISIBLE onAnimationStart: %s",tokenBtn.getVisibility());
}
#Override
public void onAnimationRepeat(Animation animation) {
GVLog.d(TAG,"MAKE INVISIBLE onAnimationRepeat: %s",tokenBtn.getVisibility());
}
#Override
public void onAnimationEnd(Animation animation) {
tokenBtn.setVisibility(View.INVISIBLE);
GVLog.d(TAG,"MAKE INVISIBLE onAnimationEnd: %s",tokenBtn.getVisibility());
}
});
tokenBtn.startAnimation(animation1);
but the call to make the ImageButton invisible is not taking effect. So how do I make it take effect so that the ImageButton remains invisible?

Try like this. These codes always work on my apps.
AlphaAnimation animation1 = new AlphaAnimation(1, 0);
animation1.setDuration(1000);
tokenBtn.startAnimation(animation1);
tokenBtn.setVisibility(View.INVISIBLE);

Have scale animation AFTER translate animation from last position

I want to apply a translate animation to the view from bottom right to center THEN scale animation from where it finished translation. Once this is done, I want the view to come back to its original size and position. Any idea how to do that? Here is the code I am using for animation
TranslateAnimation translateAnim = new TranslateAnimation(0, midScreenX, 0, midScreenY);
translateAnim.setDuration(2000);
ScaleAnimation scaleAnim = new ScaleAnimation(1, 4, 1, 4, Animation.RELATIVE_TO_SELF,1f, Animation.RELATIVE_TO_SELF,1f);
scaleAnim.setDuration(2000);

use an AnimationListener to chain the animations and use setFillAfter(true)
TranslateAnimation translateAnim = new TranslateAnimation(0, midScreenX, 0, midScreenY);
translateAnim.setDuration(2000);
// user setFillAfter to make sure that we scale from the last position it was animated to.
translateAnim.setFillAfter(true);
// make scaleAnim final so we can use it in the AnimationListener.onAnimationEnd method
final ScaleAnimation scaleAnim = new ScaleAnimation(1, 4, 1, 4, Animation.RELATIVE_TO_SELF,1f, Animation.RELATIVE_TO_SELF,1f);
scaleAnim.setDuration(2000);
scaleAnim.setFillAfter(true);
translateAnim.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
// now that the first animation is done, start the second
someViewObj.startAnimation(scaleAnim);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
// start first animation
someViewObj.startAnimation(translateAnim);
Android Docs : http://developer.android.com/reference/android/view/animation/Animation.AnimationListener.html
http://developer.android.com/reference/android/view/animation/Animation.html#setFillAfter(boolean)

How to avoid the blink image when save the image after rotate animation?

I am confusing the translate animation and rotate animation. In my game I use this two animations, after completing the animation I am save my image. In translate animation it is fine, but after completing rotate animation my image is blink once. See my code in bellow, please solve my problem……..
Why anyone not respond my question, it is not understand or I am asking any wrong question ? Please tell me reason.................
Thanks.
Bitmap bmp=BitmapFactory.decodeResource(getResources(),R.drawable.train);
//1)
TranslateAnimation TAnimation=new TranslateAnimation(0, 0, 0,-100);//bottom to start
TAnimation.setInterpolator(new LinearInterpolator());
TAnimation.setDuration(2000);
TAnimation.setFillAfter(false);
TAnimation.setFillEnabled(true);
//TAnimation.setFillBefore(true);
Train.startAnimation(TAnimation);
TAnimation.setAnimationListener(new AnimationListener() {
public void onAnimationStart(Animation animation) {
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
RelativeLayout RL=(RelativeLayout)findViewById(R.id.rl);
param=new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
param.setMargins(x, y, 0, 0);
Train.setLayoutParams(param);
Train.setImageBitmap(bmp);
}
});
//x and y values are exact position of compliting translateanimation position
//2)
RotateAnimation RAnimation=new RotateAnimation(0,90,50,25);
RAnimation.setInterpolator(new LinearInterpolator());
RAnimation.setDuration(2000);
RAnimation.setFillAfter(false);
TAnimation.setFillEnabled(true);
//RAnimation.setFillBefore(true);
Train.startAnimation(RAnimation);
RAnimation.setAnimationListener(new AnimationListener() {
public void onAnimationStart(Animation animation) {
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
RelativeLayout RL=(RelativeLayout)findViewById(R.id.rl);
param=new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
param.setMargins(x, y, 0, 0);//x and y values are exact position of compliting translateanimation position
Train.setLayoutParams(param);
Train.setImageBitmap(bmp);
}
});

i had that problem but it's reaaaaally simple to fix. You don't need to implement the animation listener, simple don't do it (i had your problem because I use that way).
Do your animation and before call the animation method:
setFillAfter(true); //this save view at the end of the animation
Like so:
//my animation
final Animation rotation = AnimationUtils.loadAnimation(getActivity(), R.anim.rotate_up);
//hide login content
content.setVisibility(View.GONE);
//animContent = AnimationUtils.loadAnimation(getActivity(), R.anim.show_up);
rotation.setFillAfter(true);
//animate the arrow
arrow.startAnimation(rotation);
So, delete the listeners and change your setFillAfter(false) to TRUE. Will works ;)

How do I stop an infinite animation on an ImageView, but let it complete its current cycle?

I applied an infinite animation on an ImageView to indicate a running background thread in my app. When the thread finishes, I'm able to stop the animation by using clearAnimation(), but it snaps the ImageView back to its starting position, and I'd like the current animation cycle to complete (which is designed to gracefully end in its starting position). Is there a way to do this?

Register an AnimationListener, and wait until onAnimationRepeat() to clear it. I haven't tried this, but I think it will work.

Just call setRepeatCount(0) and then listen for onAnimationEnd. See here for more details.

You can set the desirable position of your animation in the onAnimationEnd() method of your animation listener. Then, instead of going to the initial position, the View will be displayed at the coordinates you set up there.
animation = new TranslateAnimation(0, -length, 0, 0); //setup here your translation parameters
animation.setInterpolator(new LinearInterpolator());
animation.setDuration(10);
animation.setAnimationListener(new Animation.AnimationListener() {
public void onAnimationStart(Animation animation) {
animationRunning = true;
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
animationRunning = false;
// setAnimationPositionAfterPositionChange();
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) runningText.getLayoutParams();
params.leftMargin = currentPosition; //Calculate you current position here
runningText.setLayoutParams(params);
}
});
runningText.setAnimation(animation);

If you are using animate()
you use setListener(null) to stop it the animation,
works for me.
image.animate()
.translationXBy(-width* 0.5f)
.setDuration(300)
.setStartDelay(6000)
.setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
image.animate().rotationBy(90).setDuration(1000).setStartDelay(1).setListener(null);
}
});

How to animate a child view and having the parent view to automatically resize?

I've a quick question.
I'm trying to animating a child view to make it disappear. That part is easy, but, during the animation, the parent view is not resized. How can I do to make the parent view automtically resize during the animation?
Here is my current code:
AnimationSet set = new AnimationSet(true);
Animation fade = new ScaleAnimation(1.f, 1.f, 1.f, 0);
Animation fade2 = new AlphaAnimation(1, 0);
set.addAnimation(fade);
set.addAnimation(fade2);
set.setDuration(2000);
set.setFillAfter(true);
bgColor.startAnimation(set);
bgColor is the View I'm making disappear. Here is the final result :
Result
You can see the gap after the animation.
Any ideas?
Thanks in advance!

You may add an AnimationListener and do a change of the layout after the animation is done
animation.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationEnd(Animation animation) {
bgColor.setVisibility(View.GONE);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
#Override
public void onAnimationStart(Animation animation) {
}
});
Also, be sure to have your stuff together regarding onFillAfter()!