I am developing two different animations as shown below.
The first animation I was able to develop using Object animator and FrameLayout. Basically, I created the two rectangles and the candlesticks inside a gravity-centered frame layout. When made to start the animation, I used the object animator to move them on either side and return to the initial position.
My second animation is the issue point here. In this animation, the rectangles will go on a circular path from their initial point and return back to their initial point. During this course, the candles need to move in sync with the rectangle giving a spring effect (or) kind of a sliced rectangle.
My initial idea was to re-use the first animation and just as the first animation runs, I would run a rotate animation on the frameLayout view.
But that doesn't seem to work wherein rotation works but the translation doesn't.
Can someone say if I have taken the right approach or should I use some other way to achieve this?
Adding the code that I have tried, but didn't work.
Animation anim = new RotateAnimation(0.0f, 360.0f, pivotX, pivotY);
anim.setDuration(500);
anim.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
for(View view : mCandleSticks) {
ObjectAnimator anim1 = ObjectAnimator.ofFloat(view, "translationX", view.getX(), targetPos, view.getX());
anim1.setDuration(500);//set duration
anim1.start();//start animation
}
}
#Override
public void onAnimationRepeat(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
}
});
frameLayout.startAnimation(anim);
Thanks in advance.
Related
I am trying to learn a little bit about animations and so decided to get an ImageView to go across the screen from left to right, which I achieved with:
TranslateAnimation mAnimation = new TranslateAnimation(0, 180, 0, 0);
mAnimation.setDuration(1000);
mAnimation.setFillAfter(true);
mAnimation.setRepeatCount(-1);
mAnimation.setRepeatMode(Animation.REVERSE);
myImageView.setAnimation(mAnimation);
So, I decided to take on a new challenge. Once the image has gone from left to right, I wanted to try and get the image to return to the start position by arching back from right to left to its starting position (basically, a complete semi-circle). However, once the image has reached the end of the x-axis at position 180, I get stuck.
After reading about different methods for animation, I opted to try out ValueAnimator:
ValueAnimator animator = ValueAnimator.ofFloat(0, 1); // values from 0 to 1
animator.setDuration(1000); // 1 seconds duration from start to end position
animator.setRepeatCount(-1);
animator.setRepeatMode(ValueAnimator.REVERSE);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()
{
#Override
public void onAnimationUpdate(ValueAnimator animation) {
float value = (Float) (animation.getAnimatedValue());
myImageView.setTranslationX((float)(180.0 * Math.sin(value*Math.PI)));
myImageView.setTranslationY((float)(80.0 * Math.cos(value*Math.PI)));
}
});
animator.addListener(new AnimatorListenerAdapter()
{
#Override
public void onAnimationEnd(Animator animation)
{
// done
}
});
animator.start();
However, I am unable to get the positioning correct. I do have a semi-circle (good), however, it is moving the image like a backward C rather than a straight line left to right and then arching back to its starting position (bad).
I am not sure if I should be using AnimatorSet to link the left to right movement and the arching back movement together to create one whole animation...
Can anyone give me some guidance on how to achieve what I have described?
I'm animating a view and I want to reset the view to the original position after animation ended.
This is what I have:
rl2 is a relativeLayout
rl2.animate().translationX(-60).translationY(117).setDuration(2000);
I tried setting this but its not working:
rl2.clearAnimation();
clearAnimation(); does not reset your animations, it just stops them and removes them from the animation queue. To undo your animations you need to actually undo them. So, for your code block you will need to call rl2.animate().translationX(0).translationY(0).setDuration(2000); to move the view back to its original position.
As #Chris Stillwell mentioned on his answer, But you can move View back to it's original position after translation animation by
rl2.animate().translationX(0).translationY(0);
I know this question was asked long time ago but someone may still look for answer.
I use the Animation class for this kind of thing; there is a setFillAfter method in this class, so you can set if you want the animation to apply its transformation after it ends.
Animation anim = new ScaleAnimation(
1f, 1f, // Start and end values for the X axis scaling
1f, 2f, // Start and end values for the Y axis scaling
Animation.RELATIVE_TO_SELF, 0f, // Pivot point of X scaling
Animation.RELATIVE_TO_SELF, 1f); // Pivot point of Y scaling
anim.setFillAfter(false); // no needed to keep the result of the animation
anim.setDuration(1000);
anim.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
gangsterImage.startAnimation(anim);
If you're going to remove view don't use animation.removeAllListeners(), the function cannot continue that's why you will see some error. If you want to disappear a view, use View.GONE
in Kotlin like this:
animation.doOnEnd {
binding.mainLayout.visibility = View.GONE}
But by this way you couldn't remove any animation! So it' better rest them to the initial position.
binding.tvM2.animate().translationX(0f).translationY(0f).rotation(0f)
just use anim.setFillAfter(false); to reset automatically after animation ends.
I need an animation for an image in my application. where two balls size images should coming from the right and left corner and move all over the screen infinity on click of button
please help.
It sounds like you are looking for a TranslateAnimation
TranslateAnimation allows you to create a simple animation from one (x,y) position to another (x,y) position.
If you wanted it to run infinitely, you might do something like this:
TranslateAnimation translateAnimation = new TranslateAnimation(0,0,100,100);
translateAnimation.setRepeatMode(Animation.INFINITE);
translateAnimation.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
/* Set new from values, then generate new to values here, then restart animation */
}
});
View myView = new View();
myView.startAnimation( translateAnimation);
In my onAnimationRepeat method, I would reset the fromX and fromY values of the animation, and generate new toX and toY values, then start it over again.
This will only move the view from one point to another, if you need it to do multiple different animations at once, you might need to create a custom animation.
I have an Activity with a toolbar (which is part of the SharedElements Activity entering animation) and below that toolbar are three ImageViews horizontally next to each other. In their XML implementation all three are set INVISIBLE.
What I'm trying to do is, to animate them sequentially "dropping" from behind the toolbar. My implemenation is this:
int delay = 500;
for (int y = 0; y < 3; y++) {
ObjectAnimator oa = ObjectAnimator.ofFloat(imageViews[y],
"translationY", -300, 0);
oa.setDuration(600);
oa.setStartDelay(delay);
oa.start();
imageViews[y].setVisibility(View.VISIBLE);
delay = delay+100;
}
}
As you can see, I'm iterating through the three ImageViews and start a animation for each one to go from a -300 X-position (which is behind the toolbar) to their normal position.
This animation works great - just as I want it to be, but the problem is, that right before all ImageViews are briefly flickering which I can't explain. I tried debugging, but while I'm going through the lines of that part my screen stays black. So I can't determine where/why the Views become visible.
Maybe you can help me to find my mistake.
Thank you, this is my working Code:
For all three ImageViews:
ObjectAnimator anim1Pin = ObjectAnimator.ofFloat(img_pinned, "translationY", -300, 0);
anim1Pin.setDuration(ANIMATON_DURATION);
anim1Pin.setStartDelay(300);
anim1Pin.addListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
img_pinned.setVisibility(View.VISIBLE);
}
#Override
public void onAnimationEnd(Animator animation) {
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
});
And the AnimatorSet:
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.playTogether(anim1Pin, anim2Alarm, anim3LED);
animatorSet.start();
Few things, first, the problem may be as simple as setting the visiblity state to GONE and then after animation starts, setting it to visible. However, I would also use AnimatorSet to play the animations together and add the delay rather than do it in a loop.
If you use AnimatorSet there is an onAnimationStart method in AnimationListener that you can use the set the visible to VISIBLE rather than do it how you have to ensure that they become visible at the right time.
I have two buttons.When first button is pressed i am translating my layout layout to top and from the top of the screen another layout will come.But my issue is when came back to first layout the click events of the second layout still get fired at its previous position.So what is the Solution of it?I found a lot here on SO as well as on Google but still cannot get the right solution yet.So Please someone help me for my this issue.Thanks in Advance.
TranslateAnimation tr1 = new TranslateAnimation(0, 0, 0, -1100);
tr1.setDuration(1000);
tr1.setFillAfter(true);
layout_login.startAnimation(tr1);
tr1.setAnimationListener(new AnimationListener() {
public void onAnimationStart(Animation animation) {
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
layout_signup.setVisibility(View.VISIBLE);
TranslateAnimation tr2 = new TranslateAnimation(0, 0,
-1100, 0);
tr2.setDuration(1000);
tr2.setFillAfter(true);
tr2.setInterpolator(MainActivity.this,
android.R.anim.linear_interpolator);
layout_signup.startAnimation(tr2);
tr2.setAnimationListener(new AnimationListener() {
public void onAnimationStart(Animation animation) {
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
home_activity_btn_login.setEnabled(true);
}
});
}
});
I think this is a bug with the old animator schemes (I beleive a pretty well known bug, involving fill after not working sometimes). Try using ObjectAnimator instead
Here is an example,
ObjectAnimator oa = ObjectAnimator.ofFloat(view, "translationX", 0, 100f);
oa.setDuration(1000);
oa.start();
If you want to move in the Y direction, you can use translationY. If you want to move in both directions, you need a translationX and translationY, and use an AnimatorSet to play simultaneously.
Check out this comment to this question. Using the old Animation API, apparently dispite fillAfter(true), the buttons click position remains the same. This confirms your issue. So just use the new API, and you should be in good shape.