版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/xiaoshuxgh/article/details/87862066
大屌推荐之自定义Behavior 方法
public class FlingBehavior extends AppBarLayout.Behavior { private static final int TOP_CHILD_FLING_THRESHOLD = 3; private boolean isPositive; public FlingBehavior() { } public FlingBehavior(Context context, AttributeSet attrs) { super(context, attrs); } @Override public boolean onNestedFling(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, float velocityX, float velocityY, boolean consumed) { if (velocityY > 0 && !isPositive || velocityY < 0 && isPositive) { velocityY = velocityY * -1; } if (target instanceof RecyclerView && velocityY < 0) { final RecyclerView recyclerView = (RecyclerView) target; final View firstChild = recyclerView.getChildAt(0); final int childAdapterPosition = recyclerView.getChildAdapterPosition(firstChild); consumed = childAdapterPosition > TOP_CHILD_FLING_THRESHOLD; } return super.onNestedFling(coordinatorLayout, child, target, velocityX, velocityY, consumed); } @Override public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target, int dx, int dy, int[] consumed) { super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed); isPositive = dy > 0; } }
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_behavior="com.example.kylinarm.coordinatorlayouttest.FlingBehavior"
>
只能说比之前好一些,但不能完全解决问题,暂时先这样解决,希望大家有更好的解决方法望告知!