Android button 圆角矩形

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle" >    <corners        android:bottomLeftRadius="25dp"        android:bottomRightRadius="25dp"        android:radius="8dp"        android:topLeftRadius="25dp"        android:topRightRadius="25dp" />    <!--    <gradient            android:angle="45"            android:endColor="#72cb60"            android:startColor="#72cb60" />-->    <padding        android:bottom="10dp"        android:left="10dp"        android:right="10dp"        android:top="10dp" />    <size android:width="100dp" />    <solid android:color="#999" />    <stroke        android:width="2dp"        android:color="#dcdcdc" /></shape>

不多说了，自己用就知道了，这里我选择给Button在加一个动画:

    @Override    public void onClick(View view) {        switch (view.getId()){            case R.id.button1:                Button1Click(view);                break;        }    }    private void Button1Click( final View v) {        ObjectAnimator o=ObjectAnimator.ofFloat(v,"rotationY",1.0F,0.0F,1.0f)                .setDuration(500);        o.start();        o.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {            @Override            public void onAnimationUpdate(ValueAnimator valueAnimator) {                float animatedValue = (float) valueAnimator.getAnimatedValue();                v.setAlpha(animatedValue);                v.setScaleX(animatedValue);                v.setScaleY(animatedValue);            }        });    }

还是很不错的!
里面挺多属性动画样式，有兴趣的可以看看：
http://download.csdn.net/download/kururunga/9994328