private void Switch (Drawable src, ColorStateList tint, bool withAnimation = false)
{
if (!withAnimation) {
SetImageDrawable (src);
BackgroundTintList = tint;
return;
}
const int ScaleDuration = 200;
const int InitialDelay = 100;
if (switchAnimation != null) {
switchAnimation.Cancel ();
switchAnimation = null;
}
var currentSrc = Drawable;
// Scaling down animation
var circleAnimOutX = ObjectAnimator.OfFloat (this, "scaleX", 1, 0.1f);
var circleAnimOutY = ObjectAnimator.OfFloat (this, "scaleY", 1, 0.1f);
circleAnimOutX.SetDuration (ScaleDuration);
circleAnimOutY.SetDuration (ScaleDuration);
// Alpha out of the icon
//var iconAnimOut = ObjectAnimator.OfInt (currentSrc, "alpha", 255, 0);
//iconAnimOut.SetDuration (AlphaDuration);
var outSet = new AnimatorSet ();
outSet.PlayTogether (circleAnimOutX, circleAnimOutY);
outSet.SetInterpolator (AnimationUtils.LoadInterpolator (Context,
Android.Resource.Animation.AccelerateInterpolator));
outSet.StartDelay = InitialDelay;
outSet.AnimationEnd += (sender, e) => {
BackgroundTintList = tint;
SetImageDrawable (src);
JumpDrawablesToCurrentState ();
((Animator)sender).RemoveAllListeners ();
};
// Scaling up animation
var circleAnimInX = ObjectAnimator.OfFloat (this, "scaleX", 0.1f, 1);
var circleAnimInY = ObjectAnimator.OfFloat (this, "scaleY", 0.1f, 1);
circleAnimInX.SetDuration (ScaleDuration);
circleAnimInY.SetDuration (ScaleDuration);
var inSet = new AnimatorSet ();
inSet.PlayTogether (circleAnimInX, circleAnimInY);
inSet.SetInterpolator (AnimationUtils.LoadInterpolator (Context,
Android.Resource.Animation.DecelerateInterpolator));
switchAnimation = new AnimatorSet ();
switchAnimation.PlaySequentially (outSet, inSet);
switchAnimation.Start ();
}
private async void OnRequestOnboardingPage(OnboardingViewModel oVm)
{
_viewModel = oVm;
AnimationInitUI();
BindEvents();
var mainAnimatorSet = new AnimatorSet();
var appNameLayoutFinalTopSpace = TypedValue.ApplyDimension(ComplexUnitType.Dip, 55.0f, Application.Context.Resources.DisplayMetrics);
var decelerateInterpolator = new DecelerateInterpolator(1.0f);
var appNameLayoutAnimator = new ValueAnimator();
appNameLayoutAnimator.SetDuration(750);
appNameLayoutAnimator.SetInterpolator(decelerateInterpolator);
appNameLayoutAnimator.SetFloatValues(_appNameLayout.GetY(), appNameLayoutFinalTopSpace);
appNameLayoutAnimator.Update += (o, args) => { _appNameLayout.SetY((float)args.Animation.AnimatedValue); };
var whatAccountsAnimator = new ValueAnimator();
whatAccountsAnimator.SetDuration(750);
whatAccountsAnimator.SetInterpolator(decelerateInterpolator);
whatAccountsAnimator.SetFloatValues(0.0f, 1.0f);
whatAccountsAnimator.Update += (o, args) => { _whatAccounts.Alpha = (float)args.Animation.AnimatedValue; };
var appNameAnimationSet = new AnimatorSet();
appNameAnimationSet.PlayTogether(appNameLayoutAnimator, whatAccountsAnimator);
var socialButtonsAnimatorSet = new AnimatorSet();
var overshootInterpolator = new OvershootInterpolator(3f);
var facebookButtonAnimator = new ValueAnimator();
facebookButtonAnimator.SetDuration(500);
facebookButtonAnimator.SetInterpolator(overshootInterpolator);
facebookButtonAnimator.SetFloatValues(_facebookButton.GetY() + _facebookButton.Height, _facebookButton.GetY());
facebookButtonAnimator.Update += (o, args) =>
{
_facebookButton.SetY((float)args.Animation.AnimatedValue);
_facebookButton.Alpha = args.Animation.AnimatedFraction;
};
var twitterButtonAnimator = new ValueAnimator();
twitterButtonAnimator.SetDuration(500);
twitterButtonAnimator.SetInterpolator(overshootInterpolator);
twitterButtonAnimator.SetFloatValues(_facebookButton.GetY() + _facebookButton.Height, _facebookButton.GetY());
twitterButtonAnimator.Update += (o, args) =>
{
_twitterButton.SetY((float)args.Animation.AnimatedValue);
_twitterButton.Alpha = args.Animation.AnimatedFraction;
};
socialButtonsAnimatorSet.PlaySequentially(facebookButtonAnimator, twitterButtonAnimator);
socialButtonsAnimatorSet.StartDelay = 500;
var letsGoButtonAnimator = new ValueAnimator();
letsGoButtonAnimator.SetDuration(500);
letsGoButtonAnimator.SetInterpolator(decelerateInterpolator);
letsGoButtonAnimator.SetFloatValues(0.0f, 1.0f);
letsGoButtonAnimator.Update += (sender, args) =>
{
_goButton.Alpha = (float)args.Animation.AnimatedValue;
};
mainAnimatorSet.PlaySequentially(appNameAnimationSet, socialButtonsAnimatorSet, letsGoButtonAnimator);
await _viewModel.DidLoad();
await Task.Delay(2000);
mainAnimatorSet.Start();
await _viewModel.DidAppear();
}
public void SetCount(int count, bool animate)
{
if (!animate) {
Count = count;
return;
}
ValueAnimator outAnimator = null;
if (this.count != 0) {
outAnimator = ValueAnimator.OfInt (255, 0);
outAnimator.SetDuration (250);
outAnimator.Update += (sender, e) => { currentBubbleTransparency = (int)e.Animation.AnimatedValue; Invalidate (); };
outAnimator.AnimationEnd += (sender, e) => { this.count = count; outAnimator.RemoveAllListeners (); };
} else {
this.count = count;
}
var inAnimator = ValueAnimator.OfInt (0, 255);
inAnimator.SetDuration (700);
inAnimator.Update += (sender, e) => { currentBubbleTransparency = (int)e.Animation.AnimatedValue; Invalidate (); };
inAnimator.AnimationEnd += (sender, e) => inAnimator.RemoveAllListeners ();
if (outAnimator != null) {
var set = new AnimatorSet ();
set.PlaySequentially (outAnimator, inAnimator);
set.Start ();
} else {
inAnimator.Start ();
}
}
/// <summary>
/// Playes a series of animations.
/// </summary>
/// <param name="animations">The series of animations to be played.</param>
protected void PlayAnimations(ObjectAnimator[] animations)
{
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.PlaySequentially(animations);
animatorSet.Start();
//animatorSet.AnimationEnd
//animatorSet.Pause
}