我想nineoldandroids是API较低则蜂窝...

i thought nineoldandroids is a framework for API lower then HONEYCOMB...

让我怎么错了？我的HTC的Andr​​oid 2.2.1抛出这个错误（找不到二传手/ getter方法​​属性阿尔法值类型为浮动）：在所有这些行：

so what do i wrong?? my HTC Android 2.2.1 throws this error (Couldn't find setter/getter for property alpha with value type float): on all these lines:

ObjectAnimator.ofFloat(mHintViewRing, "alpha", 0);
ObjectAnimator.ofFloat(mHintViewRing, "alpha", 0f, 1f);

编辑： 我贴错了行遗憾：

i posted the wrong line sorry:

PropertyValuesHolder.ofFloat("alpha", 1f, 0.1f);

是坏的。

推荐答案

一些尝试后，我更换了所有PropertyValues​​Holder与ObjectAnimator（含浮动瓦尔）

After some tries, i replaced all PropertyValuesHolder with ObjectAnimator (with float vars)