<?xml version="1.0" encoding="utf-8"?><alpha    xmlns:android="http://schemas.android.com/apk/res/android"            android:fromAlpha="1.0"         起始透明度，取值范围0.0--1.0 ，从完全透明到完全不透明            android:toAlpha="0.1"           结束透明度，取值范围同上            android:duration="700"             动画持续时间，毫秒为单位            android:fillAfter="true"           动画结束后，保持结束时的状态            android:fillBefore="true"          动画结束后，恢复为初始状态            android:fillEnabled="true"         效果同上            android:repeatCount="5"            重复次数,取值为-1时无限重复，默认动画执行一次            android:repeatMode ="reverse"      重复模式，有reverse和restart两个值，前者为倒序回放，后者为重新开始            android::interpolator="@android:anim/accelerate_decelerate_interpolator" #插值器

<?xml version="1.0" encoding="utf-8"?>

<translate xmlns:android="http://schemas.android.com/apk/res/android"

    android:interpolator="@android:anim/accelerate_interpolator"

    android:fromYDelta="0%p"

    android:toYDelta="-100%p"

    android:duration="1000">

translate>

<?xml version="1.0" encoding="utf-8"?>

<translate xmlns:android="http://schemas.android.com/apk/res/android"

    android:interpolator="@android:anim/accelerate_interpolator"

    android:fromYDelta="100%p"

    android:toYDelta="0%p"

    android:duration="1000">

translate>

@android:anim/accelerate_interpolator： 越来越快

@android:anim/decelerate_interpolator：越来越慢

@android:anim/accelerate_decelerate_interpolator：先快后慢

@android:anim/anticipate_interpolator: 先后退一小步然后向前加速

@android:anim/overshoot_interpolator：快速到达终点超出一小步然后回到终点

@android:anim/anticipate_overshoot_interpolator：到达终点超出一小步然后回到终点

@android:anim/bounce_interpolator：到达终点产生弹球效果，弹几下回到终点

@android:anim/linear_interpolator：均匀速度。

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"     android:duration="@android:integer/config_mediumAnimTime"     android:interpolator="@android:anim/decelerate_interpolator"     android:shareInterpolator="false">    <alpha        android:fromAlpha="0.0"        android:toAlpha="1.0"/>    <translate        android:fromXDelta="0%"        android:fromYDelta="100%"        android:toXDelta="0%"        android:toYDelta="0%"/>set>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"     android:duration="@android:integer/config_mediumAnimTime"     android:interpolator="@android:anim/decelerate_interpolator"     android:shareInterpolator="false">    <alpha        android:fromAlpha="1.0"        android:toAlpha="0.5"/>    <translate        android:fromXDelta="0%"        android:fromYDelta="0%"        android:toXDelta="0%"        android:toYDelta="100%"/>set>

<style name="AnimationPicker" mce_bogus="1" parent="android:Animation">    <item name="android:windowEnterAnimation">@anim/slide_in_bottomitem>    <item name="android:windowExitAnimation">@anim/slide_out_bottomitem>style>

OptionPicker picker = new OptionPicker(getActivity(), new String[]{"支出", "收入"});picker.setCanceledOnTouchOutside(false);picker.setDividerRatio(WheelView.DividerConfig.FILL);picker.setShadowColor(Color.WHITE, 40);picker.setSelectedIndex(0);picker.setCycleDisable(true);picker.setCancelTextSize(16);picker.setTopLineColor(Color.parseColor("#F4F4F4"));picker.setTopBackgroundColor(Color.parseColor("#fbd415"));picker.setCancelTextColor(Color.BLACK);picker.setSubmitTextSize(16);picker.setSubmitTextColor(Color.BLACK);picker.setTextColor(Color.BLACK);picker.setDividerColor(Color.parseColor("#F4F4F4"));picker.setTextSize(16);picker.setOffset(2);picker.setAnimationStyle(R.style.AnimationPicker);