动画视图背景颜色的Andr​​oid变化 [英] Animate change of view background color in Android

问题描述

你如何动画在Android的视图的背景颜色的变化？

How do you animate the change of background color of a view in Android?

例如：

我有一个红色的背景颜色的看法。视图的背景颜色变为蓝色。我该怎么办颜色之间的平滑过渡？

I have a view with a red background color. The background color of the view changes to blue. How can I do a smooth transition between colors?

如果这不能与意见做，另一种会受到欢迎。

If this can't be done with views, an alternative will be welcome.

推荐答案

我最终找出一个（pretty的好）解决方案，这个问题！

I ended up figuring out a (pretty good) solution for this problem!

您可以使用<一个href="http://developer.android.com/reference/android/graphics/drawable/TransitionDrawable.html">TransitionDrawable要做到这一点。例如，在绘制文件夹中的XML文件，你可以写这样的：

You can use a TransitionDrawable to accomplish this. For example, in an xml file in the drawable folder you could write something like:

<?xml version="1.0" encoding="UTF-8"?>
<transition xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- The drawables used here can be solid colors, gradients, shapes, images, etc. -->
    <item android:drawable="@drawable/original_state" />
    <item android:drawable="@drawable/new_state" />
</transition>

然后，在你的XML的实际查看，你会引用此TransitionDrawable在机器人：背景属性

在这一点上，你可以通过执行启动转型的指令你的code：

At this point you can initiate the transition in your code on-command by doing:

TransitionDrawable transition = (TransitionDrawable) viewObj.getBackground();
transition.startTransition(transitionTime);

或致电运行反向转换：

Or run the transition in reverse by calling:

transition.reverseTransition(transitionTime);

我希望这可以帮助你解决问题！

I hope this helps you solve your problem!

编辑：查看罗马的回答使用属性动画API的另一种解决方案，其中WASN 'T提供的这个答案最初发布的时间。

See Roman's answer for another solution using the Property Animation API, which wasn't available at the time this answer was originally posted.

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