如何以编程方式为ImageView设置动画 [英] How to programmatically animate an ImageView

问题描述

当我单击该图像视图时，我正在尝试为ImageView设置动画.

I am trying to animate an ImageView when the said image view is clicked.

具体来说，我希望ImageView的尺寸变大(例如，增大.20)，并立即缩小到其原始尺寸.

Specifically I want the size of the ImageView gets bigger (say .20 bigger) and the immediately shrink back to its original size).

到目前为止，我一直在尝试使用此代码，但是运气不好.

So far I have been experimenting with this code with no luck.

// thumbLike is the imageView I would like to animate.
button.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        ScaleAnimation scaleAnim = new ScaleAnimation(1.0f, 2.5f, 1.0f, 2.5f,
                                    Animation.RELATIVE_TO_SELF, 0.5f,
                                    Animation.RELATIVE_TO_SELF, 0.5f);
        scaleAnim.setInterpolator(new LinearInterpolator());
        scaleAnim.setDuration(1500);
        thumbLike.startAnimation(scaleAnim);
        thumbLike.setAnimation(null);
    }
});

有人可以建议我解决问题吗?

Can anyone suggest me with a possible solution?

编辑#1

Hardik4560回答说，它正在通过XML进行工作:

It is working through XML as answered by Hardik4560:

// finally i use this code to execute the animation
Animation animationScaleUp = AnimationUtils.loadAnimation(this, R.anim.scale_up);
Animation animationScaleDown = AnimationUtils.loadAnimation(this, R.anim.scale_down);

AnimationSet growShrink = new AnimationSet(true);
growShrink.addAnimation(animationScaleUp);
growShrink.addAnimation(animationScaleDown);
thumbLike.startAnimation(growShrink);

和XML

SCALE_UP
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator">
    <scale
        android:fromXScale="1.0"
        android:toXScale="1.5"
        android:fromYScale="1.0"
        android:toYScale="1.5"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="1000" />
</set>

SCALE_DOWN
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator">
    <scale
        android:fromXScale="1.5"
        android:toXScale="1.0"
        android:fromYScale="1.5"
        android:toYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="1000" />
</set>

ps:这很尴尬，因为我已经接受了答案.我正在尝试将@tharkbad和@ Hardik4560的答案结合起来，但是现在它的动画效果看起来并不流畅.

ps: this is awkward, since I already accepted an answer. I am trying to combine between @tharkbad and @Hardik4560 's answers yet now the way it animates does not look smooth.

在scale_up动画期间，有点像跳到"动画的结尾，然后立即开始scale_down动画.我想我得再试一下了.

during the scale_up animation, it kinda look like being "skip" to the end of animation and then immediately starting scale_down animation. I guess I have to play around with it a bit.

推荐答案

我用它来实现弹出弹出效果，

I use this to achieve popin popout effect,

看看它对您是否有帮助

弹出.

<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/bounce_interpolator"    >
    <scale
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale="0.5"
        android:fromYScale="0.5"
        android:toXScale="1.0"
        android:toYScale="1.0"
        android:duration="500" />

</set>

弹出

<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/bounce_interpolator"    >
    <scale
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:toXScale="0.0"
        android:toYScale="0.0"
        android:duration="500" />

</set>

这篇关于如何以编程方式为ImageView设置动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！