android - 仅在单击按钮时才需要显示 Bottom Sheet 行为？

Question

我已经使用 appcompat-v7:23.2.1 实现了 Bottom Sheet 。一切正常，但唯一的问题是当我向上拖动布局时， Bottom Sheet 出现了。我没有当 Bottom Sheet 未显示在屏幕上时，希望在布局上向上拖动时显示 Bottom Sheet 。

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/DarkGray"
tools:context=".bottom_sheets.grid.BottomSheetGridActivity">
  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <Button
        android:id="@+id/btnView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Show view" />
  </LinearLayout>
   <LinearLayout
    android:id="@+id/bottom_sheet1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="vertical"
    android:layout_marginBottom="8dp"
    app:layout_behavior="@string/bottom_sheet_behavior">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clipToPadding="false"
        android:background="#fff"
        />
 </LinearLayout>
</android.support.design.widget.CoordinatorLayout>

主要 Activity

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.bottom_grid);
    Button btnView = (Button) findViewById(R.id.btnView);
    View bottomSheet = findViewById(R.id.bottom_sheet1);
    behavior = BottomSheetBehavior.from(bottomSheet);
    btnView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

             behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
        }
    });

    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            // React to state change

        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
            // React to dragging events
        }
    });

    RecyclerView listRecyclerView = (RecyclerView) findViewById(R.id.recyclerView1);
    listRecyclerView.setHasFixedSize(true);
    listRecyclerView.setLayoutManager(new LinearLayoutManager(this));
    RecyclerItemAdapter recyclerItemAdapter = new RecyclerItemAdapter(createItems(), this);
    listRecyclerView.setAdapter(recyclerItemAdapter);
}

上面的代码将在点击时显示 Bottom Sheet ，但在布局上向上拖动时也会显示工作表。我是否遗漏了什么。请帮助我!

Answer 1

感谢@oguzhand

 behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            // React to state change
            if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
            // React to dragging events
        }
    });

我现在可以在未显示时禁用 Bottom Sheet 行为。