如何使用新的设计支持库 23.2 实现 Bottom Sheets

Question

Google 发布新更新以支持库 23.2，因为他们添加了底部 sheet 功能。任何人都可以告诉如何使用该库实现底部 sheet。

Answer 1

您可以按照此处提供的说明进行操作：http://android-developers.blogspot.com/2016/02/android-support-library-232.html

"通过将 BottomSheetBehavior 附加到 CoordinatorLayout 的子视图（即添加 app:layout_behavior=”android.support.design.widget.BottomSheetBehavior”），您将自动获得适当的触摸检测在五个状态之间转换..."

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@color/white">

    <!-- Your Widgets -->

    <FrameLayout
        android:id="@+id/bottom_sheet"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ff0000"
        app:behavior_hideable="true"
        app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Test" />

    </FrameLayout>

</android.support.design.widget.CoordinatorLayout>

然后从你的activity:

View bottomSheet = findViewById(R.id.bottom_sheet);
BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
bottomSheetBehavior.setState(<desired state>);

Answer 2

使用如下布局

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <android.support.design.widget.AppBarLayout>

        <android.support.design.widget.CollapsingToolbarLayout>

            <ImageView/>

            <android.support.v7.widget.Toolbar/>

        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout>

            //.....

        </LinearLayout>


    </android.support.v4.widget.NestedScrollView>

    <FrameLayout
        android:id="@+id/bottom_sheet"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:behavior_hideable="true"
        app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

        //your bottom sheet layout

        </LinearLayout>
    </FrameLayout>


    <android.support.design.widget.FloatingActionButton/>

</android.support.design.widget.CoordinatorLayout>

在Activity

CoordinatorLayout coordinatorLayout = (CoordinatorLayout) findViewById(R.id.main_content);
// The View with the BottomSheetBehavior
View bottomSheet = coordinatorLayout.findViewById(R.id.bottom_sheet);
final BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
    @Override
    public void onStateChanged(@NonNull View bottomSheet, int newState) {
        // React to state change
        Log.e("onStateChanged", "onStateChanged:" + newState);
        if (newState == BottomSheetBehavior.STATE_EXPANDED) {
                fab.setVisibility(View.GONE);
            } else {
                fab.setVisibility(View.VISIBLE);
            }
    }

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

behavior.setPeekHeight(100);

Answer 3

gradle:首先使用编译'com.android.support:design:23.2.0'

在你的布局中

<include layout="@layout/content_sheet" />

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:src="@android:drawable/ic_dialog_email" />
<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/bottom_sheet"
    app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
    style="@style/Widget.Design.BottomSheet.Modal">
    <CalendarView
        android:layout_width="match_parent"
        android:layout_height="match_parent"></CalendarView>
</FrameLayout>

在java

    CoordinatorLayout coordinatorLayout= (CoordinatorLayout) findViewById(R.id.cl_main);
    final View bottomSheet = coordinatorLayout.findViewById(R.id.bottom_sheet);
    final BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {

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

        }
    });
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            behavior.setState(BottomSheetBehavior.STATE_EXPANDED );
        }
    });

Answer 4

您可以按照 tutsplus.com 上的教程进行操作 https://code.tutsplus.com/articles/how-to-use-bottom-sheets-with-the-design-support-library--cms-26031

<android.support.design.widget.CoordinatorLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/coordinator_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

     <com.google.android.gms.maps.MapView
        android:id="@+id/map_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:uiCompass="true"
        app:uiMapToolbar="false" />


     <android.support.v4.widget.NestedScrollView
            android:id="@+id/bottom_sheet"
            android:layout_width="match_parent"
            app:behavior_peekHeight="100dp"
            app:behavior_hideable="true"
            android:layout_height="350dp"
            android:clipToPadding="true"
            android:background="@android:color/holo_orange_light"
            app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
            >
     
            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="@string/ipsum"
                android:padding="16dp"
                android:textSize="16sp"/>
     
        </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

如果您希望它可以滑动关闭，请确保在标签上添加 app:behavior_hideable="true"。

在你的 activity 里面你可以说：

  BottomSheetBehavior mBottomSheetBehavior = BottomSheetBehavior.from(findViewById(R.id.bottom_sheet));
  mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);

  findViewById(R.id.button).setOnClickListener(p-> mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED));

如何使用新的设计支持库 23.2 实现 Bottom Sheets

How to implement Bottom Sheets using new design support library 23.2

android

android-support-library

android-support-design