关于XML驱动动画的文档非常糟糕。我已经搜索了大约几个小时，只是为了在按下按钮时使背景颜色动画化…遗憾的是动画只有一个属性:你可以在选择器中使用exitFadeDuration:

<selector xmlns:android="http://schemas.android.com/apk/res/android"
    android:exitFadeDuration="200">

    <item android:state_pressed="true">
        <shape android:tint="#3F51B5" />
    </item>

    <item>
        <shape android:tint="#F44336" />
    </item>

</selector>

然后将它用作视图的背景。不需要Java/Kotlin代码。

在Kotlin中使用以下函数:

private fun animateColorValue(view: View) {
    val colorAnimation =
        ValueAnimator.ofObject(ArgbEvaluator(), Color.GRAY, Color.CYAN)
    colorAnimation.duration = 500L
    colorAnimation.addUpdateListener { animator -> view.setBackgroundColor(animator.animatedValue as Int) }
    colorAnimation.start()
}

传递任何你想改变颜色的视图。

你可以使用API 11上面的ArgbEvaluatorCompat类。

implementation 'com.google.android.material:material:1.0.0' 


ValueAnimator colorAnim = ValueAnimator.ofObject(new ArgbEvaluatorCompat(), startColor, endColor);
colorAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator animation) {
            mTargetColor = (int) animation.getAnimatedValue();
        }
    });
colorAnim.start();

这是我在Base Activity中用来改变背景的方法。我使用在代码中生成的GradientDrawables，但可以适应。

    protected void setPageBackground(View root, int type){
        if (root!=null) {
            Drawable currentBG = root.getBackground();
            //add your own logic here to determine the newBG 
            Drawable newBG = Utils.createGradientDrawable(type); 
            if (currentBG==null) {
                if(Build.VERSION.SDK_INT<Build.VERSION_CODES.JELLY_BEAN){
                    root.setBackgroundDrawable(newBG);
                }else{
                    root.setBackground(newBG);
                }
            }else{
                TransitionDrawable transitionDrawable = new TransitionDrawable(new Drawable[]{currentBG, newBG});
                transitionDrawable.setCrossFadeEnabled(true);
                if(Build.VERSION.SDK_INT<Build.VERSION_CODES.JELLY_BEAN){
                     root.setBackgroundDrawable(transitionDrawable);
                }else{
                    root.setBackground(transitionDrawable);
                }
                transitionDrawable.startTransition(400);
            }
        }
    }

更新:如果有人遇到同样的问题，我发现，出于某种原因，在Android <4.3使用setCrossFadeEnabled(true)导致一个不受欢迎的白色效果，所以我不得不切换到一个纯色<4.3使用@Roman Minenok ValueAnimator方法上面提到。

罗曼米诺克回答在kotlin和作为扩展函数

fun View.colorTransition(@ColorRes startColor: Int, @ColorRes endColor: Int, duration: Long = 250L){
    val colorFrom = ContextCompat.getColor(context, startColor)
    val colorTo =  ContextCompat.getColor(context, endColor)
    val colorAnimation: ValueAnimator = ValueAnimator.ofObject(ArgbEvaluator(), colorFrom, colorTo)
    colorAnimation.duration = duration

    colorAnimation.addUpdateListener {
        if (it.animatedValue is Int) {
            val color=it.animatedValue as Int
            setBackgroundColor(color)
        }
    }
    colorAnimation.start()
}

如果你想改变当前的背景色到新的颜色，那么你可以使用这个

fun View.colorTransition(@ColorRes endColor: Int, duration: Long = 250L){
    var colorFrom = Color.TRANSPARENT
    if (background is ColorDrawable)
        colorFrom = (background as ColorDrawable).color

    val colorTo =  ContextCompat.getcolor(context, endColor)
    val colorAnimation: ValueAnimator = ValueAnimator.ofObject(ArgbEvaluator(), colorFrom, colorTo)
    colorAnimation.duration = duration

    colorAnimation.addUpdateListener {
        if (it.animatedValue is Int) {
            val color=it.animatedValue as Int
            setBackgroundColor(color)
        }
    }
    colorAnimation.start()
}

使用

myView.colorTransition(R.color.bg_color)

如果你想要这样的彩色动画，

这段代码将帮助你:

ValueAnimator anim = ValueAnimator.ofFloat(0, 1);   
anim.setDuration(2000);

float[] hsv;
int runColor;
int hue = 0;
hsv = new float[3]; // Transition color
hsv[1] = 1;
hsv[2] = 1;
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

    @Override
    public void onAnimationUpdate(ValueAnimator animation) {

        hsv[0] = 360 * animation.getAnimatedFraction();

        runColor = Color.HSVToColor(hsv);
        yourView.setBackgroundColor(runColor);
    }
});

anim.setRepeatCount(Animation.INFINITE);

anim.start();