CODEWITHSUNDEEP
androidanimationtextviewfade
KellysOnTop23
KellysOnTop23

Reputation: 1435

Fade out process of textview animation not working properly

So I have a textview at the top of my screen and eight buttons in the middle. What I would like to happen is for the textview to slide in from the right (animation) and then whenever the user clicks a button it makes the textview fade out, changes the text, and then fade back in with the new text. The fading back in and changing the text works fine, but instead of fading out the textview just disappears. The textview also has a problem with the slide in from the left animation in onCreate so i figured it may be something I am missing to do with the textview. Here is my code, someone please help mehh!!

private void AnimationMethodForButtons(TextView TitleArea, int explanation){
    ObjectAnimator fadeOut = ObjectAnimator.ofFloat(TitleArea, "alpha",  1.0f, 0.0f);
    fadeOut.setDuration(3000);
    fadeOut.start();
    ObjectAnimator fadeIn = ObjectAnimator.ofFloat(TitleArea, "alpha", 0.0f, 1.0f);
    fadeIn.setDuration(3000);
    TitleArea.setText(explanation);
    fadeIn.start();
}

Upvotes: 0

Views: 1015

Answers (1)

tachyonflux
tachyonflux

Reputation: 20211

The start() call is asynchronous. You should be using an AnimatorListener if you want to do something at the end of an animation.

private void AnimationMethodForButtons(final TextView title, final int explaination){
    ObjectAnimator fadeOut = ObjectAnimator.ofFloat(title, "alpha",  1.0f, 0.0f);
    fadeOut.setDuration(3000);

    final ObjectAnimator fadeIn = ObjectAnimator.ofFloat(title, "alpha", 0.0f, 1.0f);
    fadeIn.setDuration(3000);

    fadeOut.addListener(new Animator.AnimatorListener() {
        @Override
        public void onAnimationStart(Animator animation) {

        }

        @Override
        public void onAnimationEnd(Animator animation) {
            title.setText(explaination);
            fadeIn.start();
        }

        @Override
        public void onAnimationCancel(Animator animation) {

        }

        @Override
        public void onAnimationRepeat(Animator animation) {

        }
    });

    fadeOut.start();
}

Upvotes: 1

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