Comportamento personalizzato con layout coordinatore

Question

Sto tentando di nascondere e mostrare una vista quando il mio recyclerview scorre con l'aiuto del layout del coordinatore.

mio punto di vista è un linearlayout con bottone e non è un fab, toolbar o tablayout come so già come nascondere loro su di scorrimento.

Si prega di notare che questo non è un duplicato come tutte le risposte mostrano come fab barra degli strumenti o tablayout

Questo è xml io sto usando

<android.support.design.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
<LinearLayout 
    android:id="@+id/prodMain" 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@android:color/transparent" 
    android:orientation="vertical" 
    xmlns:app="http://schemas.android.com/apk/res-auto"> 
    <RelativeLayout 
     android:id="@+id/LinearLayout01" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:background="@color/gray_light" 
     android:orientation="vertical" 
     android:paddingLeft="10dp" 
     android:paddingRight="10dp"> 

     <LinearLayout 
      android:id="@+id/linearFilterLayout" 
      android:layout_width="match_parent" 
      app:layout_behavior="fc.admin.fcexpressadmin.itemdecorators.FABFloatOnScroll" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="@dimen/margin10dp" 
      android:background="@color/white" 
      android:orientation="horizontal" 
      android:padding="@dimen/margin10dp" 
      android:visibility="visible" 
      android:weightSum="3"> 
     </LinearLayout> 

     <ViewFlipper 
      android:id="@+id/ViewFlipper01" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:layout_below="@+id/linearFilterLayout" 
      android:layout_marginBottom="@dimen/margin10dp" 
      android:layout_marginTop="@dimen/margin6dp" 
      android:background="@color/gray_light" 
      android:visibility="visible"> 

      <RelativeLayout 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:orientation="vertical"> 

       <Button 
        android:id="@+id/btnFooterRefresh" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_alignParentBottom="true" 
        android:layout_centerHorizontal="true" 
        android:layout_marginTop="5dp" 
        android:text="Refresh" 
        android:visibility="visible"/> 

       <android.support.v7.widget.RecyclerView 
        android:id="@+id/gridview" 
        android:layout_width="match_parent" 
        android:clipToPadding="false" 
        android:layout_height="match_parent" 
        android:layout_above="@+id/btnFooterRefresh" 
        android:cacheColorHint="@android:color/transparent" 
        android:listSelector="@android:color/transparent" 
        android:scrollbars="vertical" 
        android:scrollingCache="false" 
        android:visibility="visible"/> 
</RelativeLayout> 
     </ViewFlipper> 
    </RelativeLayout> 
</LinearLayout> 
</android.support.design.widget.CoordinatorLayout> 

e questo è il codice del mio comportamento personalizzato:

public class FABFloatOnScroll extends CoordinatorLayout.Behavior { 
    private static final Interpolator INTERPOLATOR = new FastOutSlowInInterpolator(); 
    private int mDySinceDirectionChange=0; 

    public FABFloatOnScroll() { 
     super(); 
    } 
    public FABFloatOnScroll(Context context, AttributeSet attrs) { 
     super(context, attrs); 
    } 
    @Override 
    public boolean layoutDependsOn(CoordinatorLayout parent, View child, View dependency) { 
     Log.e("scroll", "dependent on views"); 
     return dependency instanceof LinearLayout; 
    } 

    @Override 
    public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) { 
     // Adjust the child View accordingly 
     Log.e("scroll","dependent"); 

     return true; 
    } 
    @Override 
    public void onNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) { 
     super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed); 
     Log.e("scroll","called"); 
     //child -> Floating Action Button 
     if (dyConsumed > 0) { 
      CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) child.getLayoutParams(); 
      int fab_bottomMargin = layoutParams.bottomMargin; 
      child.animate().translationY(child.getHeight() + fab_bottomMargin).setInterpolator(new LinearInterpolator()).start(); 
     } else if (dyConsumed < 0) { 
      child.animate().translationY(0).setInterpolator(new LinearInterpolator()).start(); 
     } 
    } 
    @Override 
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dx, int dy, int[] consumed) { 
     if (dy > 0 && mDySinceDirectionChange < 0 
       || dy < 0 && mDySinceDirectionChange > 0) { 
      mDySinceDirectionChange = 0; 
     } 

     mDySinceDirectionChange += dy; 

     if (mDySinceDirectionChange > child.getHeight() 
       && child.getVisibility() == View.VISIBLE) { 
      hide(child); 
     } else if (mDySinceDirectionChange < 0 
       && child.getVisibility() == View.GONE) { 
      show(child); 
     } 
    } 
    @Override 
    public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) { 
     return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL; 
    } 
    private void hide(final View view) { 
     view.animate() 
       .translationY(view.getHeight()) 
       .setInterpolator(INTERPOLATOR) 
       .setDuration(200) 
     .setListener(new Animator.AnimatorListener() { 
      @Override 
      public void onAnimationStart(Animator animator) { 
      } 

      @Override 
      public void onAnimationEnd(Animator animator) { 
       // Prevent drawing the View after it is gone 
       view.setVisibility(View.GONE); 
      } 

      @Override 
      public void onAnimationCancel(Animator animator) { 
       // Canceling a hide should show the view 
       show(view); 
      } 

      @Override 
      public void onAnimationRepeat(Animator animator) { 
      } 
     }) 
       .start(); 
    } 
    private void show(final View view) { 
     view.animate() 
       .translationY(0) 
       .setInterpolator(INTERPOLATOR) 
       .setDuration(200) 
       .setListener(new Animator.AnimatorListener() { 
        @Override 
        public void onAnimationStart(Animator animator) { 
        } 

        @Override 
        public void onAnimationEnd(Animator animator) { 
         // Prevent drawing the View after it is gone 
         view.setVisibility(View.VISIBLE); 
        } 

        @Override 
        public void onAnimationCancel(Animator animator) { 
         // Canceling a hide should show the view 
         hide(view); 
        } 

        @Override 
        public void onAnimationRepeat(Animator animator) { 
        } 
       }) 
       .start(); 
    } 
} 

Ma il problema è la classe di comportamento personalizzata non sta chiamando nessun registro vengono stampati in alcun modo

Answer 1

Un comportamento può essere efficace solo se associato a un figlio diretto di un CoordinatorLayout.