// mWindow --> popupwindow      layout -->  指定控件

private void showTopTipsPop(TipsPopWindow mWindow, View layout) {
    View tipPop = mWindow.getContentView();
    tipPop.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    int popupWidth = tipPop.getMeasuredWidth();
    int popupHeight = tipPop.getMeasuredHeight();
    int[] location = new int[2];
    layout.getLocationOnScreen(location);

    // 此处算法，是在 指定view 的上方 展示
    mWindow.showAtLocation(layout, Gravity.NO_GRAVITY,
            (location[0] + layout.getWidth() / 2) - popupWidth / 2, location[1] - popupHeight);

    //上下动画
    TranslateAnimation translateAnimation = (TranslateAnimation) AnimationUtils.loadAnimation(PhotoActivity.this, R.anim.pop_translate);
    tipPop.startAnimation(translateAnimation);

}

在 res 下创建 anim 文件夹

在该文件夹下创建 

pop_translate 文件  

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fillAfter="true"
    android:fillBefore="false"
    android:fromXDelta="0"
    android:fromYDelta="0"
    android:interpolator="@android:anim/linear_interpolator"
    android:repeatCount="-1"
    android:repeatMode="reverse"
    android:startOffset="10"
    android:toXDelta="0"
    android:toYDelta="-15%"/>