fix issue about FAB behavior

Author: ForgetSky

app/src/main/java/com/forgetsky/wanandroid/widget/behavior/AnimatorUtil.java

@@ -15,6 +15,7 @@
  */
 package com.forgetsky.wanandroid.widget.behavior;
 
+import android.support.design.widget.CoordinatorLayout;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.view.ViewPropertyAnimatorListener;
 import android.support.v4.view.animation.LinearOutSlowInInterpolator;
@@ -87,8 +88,9 @@ public static void translateShow(View view, ViewPropertyAnimatorListener viewPro
      */
     public static void translateHide(View view, ViewPropertyAnimatorListener viewPropertyAnimatorListener) {
         view.setVisibility(View.VISIBLE);
+        CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) view.getLayoutParams();
         ViewCompat.animate(view)
-                .translationY(350)
+                .translationY(view.getHeight() + layoutParams.bottomMargin)
                 .setDuration(400)
                 .setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR)
                 .setListener(viewPropertyAnimatorListener)

app/src/main/java/com/forgetsky/wanandroid/widget/behavior/ScaleDownShowBehavior.java

@@ -65,7 +65,7 @@ public void onAnimationStart(View view) {
                     isShow = false;
                 }
             });
-        } else if ((dyConsumed < 0 || dyUnconsumed < 0 && !isAnimateIng && !isShow)) {
+        } else if ((dyConsumed < 0 || dyUnconsumed < 0) && !isAnimateIng && !isShow) {
             // 手指下滑，显示FAB
             AnimatorUtil.translateShow(child, new StateListener() {
                 @Override