禁用用户在 BottomSheet 上拖动

Question

我正在尝试禁用 BottomSheet 上的用户拖动。我想禁用的原因有两点。 1. 它阻止了 ListView 向下滚动， 2. 我不希望用户使用拖动但在 BottomSheetView 上使用按钮来关闭。这就是我所做的

 bottomSheetBehavior = BottomSheetBehavior.from(bottomAnc);
    bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            if (newState == BottomSheetBehavior.STATE_EXPANDED) {
                //Log.e("BottomSheet", "Expanded");
            } else if (newState == BottomSheetBehavior.STATE_COLLAPSED) {
                //Log.e("BottomSheet", "Collapsed");
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
            // React to dragging events
            bottomSheet.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    int action = MotionEventCompat.getActionMasked(event);
                    switch (action) {
                        case MotionEvent.ACTION_DOWN:
                            return false;
                        default:
                            return true;
                    }
                }
            });
        }
    });

bottomSheetLayout

    <?xml version="1.0" encoding="utf-8"?><FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
app:behavior_hideable="true"
app:behavior_peekHeight="0dp"
app:layout_behavior="@string/bottom_sheet_behavior"
android:id="@+id/bottomSheet">

<android.support.v7.widget.CardView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:elevation="10dp">

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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center_vertical">

            <TextView
                android:id="@+id/text1"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Order Items"
                android:layout_margin="16dp"
                android:textAppearance="@android:style/TextAppearance.Large"/>


            <Button
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="5dp"
                android:background="@drawable/bg_accept"/>

            <Button
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="8dp"
                android:background="@drawable/bg_cancel"/>

        </LinearLayout>

        <ListView
            android:id="@+id/item_edit"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/white"
            android:divider="@color/md_divider_black"
            android:dividerHeight="1dp"/>

    </LinearLayout>

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

Answer 1

在 setBottomSheetCallback 的 onStateChanged 方法中检查状态，如果状态是 BottomSheetBehavior.STATE_DRAGGING 然后将其更改为 BottomSheetBehavior.STATE_EXPANDED 这样你就可以停止 STATE_DRAGGING 由用户。如下所示

final BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
        behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
            @Override
            public void onStateChanged(@NonNull View bottomSheet, int newState) {
                if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                    behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                }
            }

            @Override
            public void onSlide(@NonNull View bottomSheet, float slideOffset) {
            }
        });

使用按钮打开关闭底部 sheet 如下所示

fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (behavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
                    behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                } else {
                    behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                }
            }
        });

不要使用 setPeekHeight 或 app:behavior_peekHeight

通过以上方式你可以达到你的目标

Answer 2

接受的答案不适用于我使用的第一台测试设备。而且反弹并不顺利。只有在用户释放拖动后才将状态设置为 STATE_EXPANDED 似乎更好。以下是我的版本：

    final BottomSheetBehavior behavior = BottomSheetBehavior.from(findViewById(R.id.bottomSheet));
    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            if (newState > BottomSheetBehavior.STATE_DRAGGING)
                bottomSheet.post(new Runnable() {
                    @Override public void run() {
                        behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                    }
                });
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
        }
    });

Answer 3

我最终写了一个解决方法来解决这个动态禁用用户拖动的用例，其中 BottomSheetBehavior 被子类化以覆盖 onInterceptTouchEvent，并在自定义标志（在本例中为 mAllowUserDragging）时忽略它设置为假：

import android.content.Context;
import android.support.design.widget.BottomSheetBehavior;
import android.support.design.widget.CoordinatorLayout;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;

public class WABottomSheetBehavior<V extends View> extends BottomSheetBehavior<V> {
    private boolean mAllowUserDragging = true;
    /**
     * Default constructor for instantiating BottomSheetBehaviors.
     */
    public WABottomSheetBehavior() {
        super();
    }

    /**
     * Default constructor for inflating BottomSheetBehaviors from layout.
     *
     * @param context The {@link Context}.
     * @param attrs   The {@link AttributeSet}.
     */
    public WABottomSheetBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setAllowUserDragging(boolean allowUserDragging) {
        mAllowUserDragging = allowUserDragging;
    }

    @Override
    public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        if (!mAllowUserDragging) {
            return false;
        }
        return super.onInterceptTouchEvent(parent, child, event);
    }
}

在你的布局中 xml:

    <FrameLayout
        android:id="@+id/bottom_sheet_frag_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:behavior_hideable="true"
        app:behavior_peekHeight="@dimen/bottom_sheet_peek_height"
        app:elevation="@dimen/bottom_sheet_elevation"
        app:layout_behavior="com.example.ray.WABottomSheetBehavior" />

到目前为止，这是禁止用户按需拖动底部 Sheet 的最稳定的解决方案。

依赖于在 onStateChanged 回调中触发另一个 setState 调用的所有其他解决方案导致 BottomSheet 进入不良状态，或导致严重的用户体验问题（在发布 setState 调用的情况下）在 Runnable 中）。

希望这对某人有所帮助:)

雷

Answer 4

为了锁定 BottomSheet 并避免用户将其滑出，这就是我所做的

public void showBottomSheet() {
    bsb.setHideable(false);
    bsb.setState(BottomSheetBehavior.STATE_EXPANDED);
}

public void hideBottomSheet() {
    bsb.setHideable(true);
    bsb.setState(BottomSheetBehavior.STATE_COLLAPSED);
}

对我来说效果很好。

Answer 5

它现在可能不再相关，但我会把它留在这里：

import android.content.Context
import android.util.AttributeSet
import androidx.coordinatorlayout.widget.CoordinatorLayout
import android.view.MotionEvent
import android.view.View
import com.google.android.material.bottomsheet.BottomSheetBehavior

@Suppress("unused")
class LockableBottomSheetBehavior<V : View> : BottomSheetBehavior<V> {
    constructor() : super()
    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)

    var swipeEnabled = true

    override fun onInterceptTouchEvent(
        parent: CoordinatorLayout,
        child: V,
        event: MotionEvent
    ): Boolean {
        return if (swipeEnabled) {
            super.onInterceptTouchEvent(parent, child, event)
        } else {
            false
        }
    }

    override fun onTouchEvent(parent: CoordinatorLayout, child: V, event: MotionEvent): Boolean {
        return if (swipeEnabled) {
            super.onTouchEvent(parent, child, event)
        } else {
            false
        }
    }

    override fun onStartNestedScroll(
        coordinatorLayout: CoordinatorLayout,
        child: V,
        directTargetChild: View,
        target: View,
        axes: Int,
        type: Int
    ): Boolean {
        return if (swipeEnabled) {
            super.onStartNestedScroll(
                coordinatorLayout,
                child,
                directTargetChild,
                target,
                axes,
                type
            )
        } else {
            false
        }
    }

    override fun onNestedPreScroll(
        coordinatorLayout: CoordinatorLayout,
        child: V,
        target: View,
        dx: Int,
        dy: Int,
        consumed: IntArray,
        type: Int
    ) {
        if (swipeEnabled) {
            super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type)
        }
    }

    override fun onStopNestedScroll(
        coordinatorLayout: CoordinatorLayout,
        child: V,
        target: View,
        type: Int
    ) {
        if (swipeEnabled) {
            super.onStopNestedScroll(coordinatorLayout, child, target, type)
        }
    }

    override fun onNestedPreFling(
        coordinatorLayout: CoordinatorLayout,
        child: V,
        target: View,
        velocityX: Float,
        velocityY: Float
    ): Boolean {
        return if (swipeEnabled) {
            super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY)
        } else {
            false
        }
    }
}

并在您的 xml 文件中使用它：

app:layout_behavior="com.your.package.LockableBottomSheetBehavior"

它禁用所有用户操作，当您只想以编程方式控制 BottomSheet 时可以使用它。

Answer 6

好的，所以接受的答案对我不起作用。然而，激发了我最终的解决方案。

首先，我创建了以下自定义底部Sheet行为。它会覆盖所有涉及触摸的方法，如果它被锁定，则 returns false（或什么都不做）。否则，它就像正常的 BottomSheet 行为一样。这禁用了用户向下拖动的能力，并且不影响在代码中更改状态。

LockableBottomSheetBehavior.java

public class LockableBottomSheetBehavior<V extends View> extends BottomSheetBehavior<V> {

    private boolean mLocked = false;

    public LockableBottomSheetBehavior() {}

    public LockableBottomSheetBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setLocked(boolean locked) {
        mLocked = locked;
    }

    @Override
    public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        boolean handled = false;

        if (!mLocked) {
            handled = super.onInterceptTouchEvent(parent, child, event);
        }

        return handled;
    }

    @Override
    public boolean onTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        boolean handled = false;

        if (!mLocked) {
            handled = super.onTouchEvent(parent, child, event);
        }

        return handled;
    }

    @Override
    public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, V child, View directTargetChild, View target, int nestedScrollAxes) {
        boolean handled = false;

        if (!mLocked) {
            handled = super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
        }

        return handled;
    }

    @Override
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed) {
        if (!mLocked) {
            super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed);
        }
    }

    @Override
    public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target) {
        if (!mLocked) {
            super.onStopNestedScroll(coordinatorLayout, child, target);
        }
    }

    @Override
    public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY) {
        boolean handled = false;

        if (!mLocked) {
            handled = super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY);
        }

        return handled;

    }
}

这是一个如何使用它的例子。在我的例子中，我需要它所以底部 Sheet 在展开时被锁定。

activity_home.xml

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_scrollFlags="scroll|snap"
            app:titleEnabled="false"/>
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"/>
    </android.support.design.widget.AppBarLayout>

    <!-- Use layout_behavior to set your Behavior-->
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
        app:layout_behavior="com.myapppackage.LockableBottomSheetBehavior"/>

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

HomeActivity.java

public class HomeActivity extends AppCompatActivity {
    BottomSheetBehavior mBottomSheetBehavior;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
        recyclerView.setAdapter(new SomeAdapter());

        mBottomSheetBehavior = BottomSheetBehavior.from(recyclerView);
        mBottomSheetBehavior.setBottomSheetCallback(new MyBottomSheetCallback());
    }

    class MyBottomSheetCallback extends BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            if (newState == BottomSheetBehavior.STATE_EXPANDED) {
                if (mBottomSheetBehavior instanceof LockableBottomSheetBehavior) {
                    ((LockableBottomSheetBehavior) mBottomSheetBehavior).setLocked(true);
                }
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {}
    });
}

希望这有助于消除很多困惑！

Answer 7

我找到了很棒的解决方案。最初的问题是一旦 bottomSheet 进入隐藏状态，它就不会出现在 bottomSheetDialog.show()。但是我想让对话框在 show() 方法上可见，并且还想让用户能够向下滑动它，这样感觉就像底部 sheet。以下是我所做的..

    BottomSheetDialog itemTypeDialog = new BottomSheetDialog(this);
    View bottomSheetView = getLayoutInflater().inflate(R.layout.dialog_bottomsheet, null);
    itemTypeDialog.setContentView(bottomSheetView);
    BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from((View) bottomSheetView.getParent());
    bottomSheetBehavior.setBottomSheetCallback(bottomSheetCallback); // You can also attach the listener here itself.

    BottomSheetBehavior.BottomSheetCallback bottomSheetCallback =  new BottomSheetBehavior.BottomSheetCallback() {
    @Override
    public void onStateChanged(@NonNull View bottomSheet, int newState) {
        Log.d(TAG, "BottomSheetCallback: " + newState);
        if (newState == BottomSheetBehavior.STATE_HIDDEN) {
            bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
            itemTypeDialog.dismiss();
        } 
    }

    @Override
    public void onSlide(@NonNull View bottomSheet, float slideOffset) {

    }
};

Answer 8

将此代码添加到 BottomSheetBehavior 对象。拖动将被禁用。对我来说很好用。

final BottomSheetBehavior behavior = BottomSheetBehavior.from((View) view.getParent());
    behavior.setHideable(false);
    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {

      @Override
      public void onStateChanged(@NonNull View bottomSheet, int newState) {
        if (newState == BottomSheetBehavior.STATE_DRAGGING) {
          behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        }

      }
      @Override
      public void onSlide(@NonNull View bottomSheet, float slideOffset) {

      }
});

Answer 9

禁用底部 sheet 时，您无需阻止所有事件。您只能阻止 ACTION_MOVE 事件。这就是为什么使用像这样的自定义底部 sheet 行为

public class BottomSheetBehaviorWithDisabledState<V extends View> extends BottomSheetBehavior<V> {
    private boolean enable = true;

    /**
     * Default constructor for instantiating BottomSheetBehaviors.
     */
    public BottomSheetBehaviorWithDisabledState() {
        super();
    }

    /**
     * Default constructor for inflating BottomSheetBehaviors from layout.
     *
     * @param context The {@link Context}.
     * @param attrs   The {@link AttributeSet}.
     */
    public BottomSheetBehaviorWithDisabledState(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setEnable(boolean enable){
        this.enable = enable;
    }

    @Override
    public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        if (!enable && event.getAction() == MotionEvent.ACTION_MOVE){
            return false;
        }
        return super.onInterceptTouchEvent(parent, child, event);
    }
}

Answer 10

迟到的答案，但是，这对我有用，与其他人的建议有点不同。

您可以尝试将 cancelable 属性设置为 false，即

setCancelable(false);

然后在 setupDialog 方法中手动处理您想关闭对话框的事件。

@Override
public void setupDialog(final Dialog dialog, final int style) {

    // handle back button
    dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
        @Override
        public boolean onKey(final DialogInterface dialog, final int keyCode, final KeyEvent event) {
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                dialog.dismiss();
            }
            return true;
        }
    });

    // handle touching outside of the dialog
    final View touchOutsideView = getDialog().getWindow().getDecorView().findViewById(android.support.design.R.id.touch_outside);
    touchOutsideView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(final View view) {
            dialog.dismiss();
        }
    });
}

这与对话框片段中的 ListView 一起使用，这是我在使用其他解决方案时遇到的问题。

Answer 11

锁定拖动的简单方法是设置与视图高度相同的PeekHeight。例如：

private LinearLayout bottomSheet;
private BottomSheetBehavior bottomBehavior;

@Override
public void onResume() {
    super.onResume();
    bottomBehavior = BottomSheetBehavior.from((bottomSheet);
    bottomBehavior.setPeekHeight(bottomSheet.getHeight());
    bottomBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
}

Answer 12

将 BottomSheetDialog 复制到您的项目并重命名为 MyBottomSheetDialog
将 getBottomSheetBehavior 添加到 MyBottomSheetDialog
使用MyBottomSheetDialog代替BottomSheetDialog
bottomSheetBehavior.setBottomSheetCallback

这样的代码

public class MyBottomSheetDialog extends AppCompatDialog {

    // some code

    public BottomSheetBehavior<FrameLayout> getBottomSheetBehavior() {
        return mBehavior;
    }

    // more code

在您的代码中

    final BottomSheetBehavior<FrameLayout> bottomSheetBehavior = myBottomSheetDialog.getBottomSheetBehavior();
    bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
        @Override
        public void onStateChanged(@NonNull View bottomSheet, int newState) {
            if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {

        }

Answer 13

这基本上是顶部正确答案的 kotlin 版本：

    class LockedBottomSheetBehavior<V : View>(context: Context, attrs: AttributeSet) :
        BottomSheetBehavior<V>(context, attrs) {

    companion object {
        fun <V : View> from(view: V): LockedBottomSheetBehavior<*> {
            val params = view.layoutParams as? CoordinatorLayout.LayoutParams
                    ?: throw IllegalArgumentException("The view is not a child of CoordinatorLayout")
            return params.behavior as? LockedBottomSheetBehavior<*>
                    ?: throw IllegalArgumentException(
                            "The view is not associated with BottomSheetBehavior")
        }
    }

    override fun onInterceptTouchEvent(
            parent: CoordinatorLayout,
            child: V, event: MotionEvent
    ) = false

    override fun onTouchEvent(
            parent: CoordinatorLayout,
            child: V,
            event: MotionEvent
    ) = false

    override fun onStartNestedScroll(
            coordinatorLayout: CoordinatorLayout,
            child: V,
            directTargetChild: View,
            target: View,
            axes: Int,
            type: Int) = false

    override fun onNestedPreScroll(
            coordinatorLayout: CoordinatorLayout,
            child: V,
            target: View,
            dx: Int,
            dy: Int,
            consumed: IntArray,
            type: Int) {
    }

    override fun onStopNestedScroll(
            coordinatorLayout: CoordinatorLayout,
            child: V,
            target: View,
            type: Int) {
    }

    override fun onNestedPreFling(
            coordinatorLayout: CoordinatorLayout,
            child: V,
            target: View,
            velocityX: Float,
            velocityY: Float
    ) = false
}

Answer 14

这是 Kotlin 中顶级解决方案的工作版本：

import android.support.design.widget.BottomSheetBehavior
import android.support.design.widget.CoordinatorLayout
import android.view.MotionEvent
import android.view.View

class CustomBottomSheetBehavior<V : View> : BottomSheetBehavior<V>() {

    @Suppress("UNCHECKED_CAST")
    companion object {
        fun <V : View> from(view: V): CustomBottomSheetBehavior<V> {
            val params = view.layoutParams as? CoordinatorLayout.LayoutParams ?:
                throw IllegalArgumentException("The view is not a child of CoordinatorLayout")
                params.behavior as? BottomSheetBehavior<V> ?:
                    throw IllegalArgumentException("The view is not associated with BottomSheetBehavior")
                params.behavior = CustomBottomSheetBehavior<V>()
            return params.behavior as CustomBottomSheetBehavior<V>
        }
    }

    override fun onInterceptTouchEvent(parent: CoordinatorLayout, child: V, event: MotionEvent): Boolean {
        return false
    }

    override fun onTouchEvent(parent: CoordinatorLayout, child: V, event: MotionEvent): Boolean {
        return false
    }

    override fun onStartNestedScroll(coordinatorLayout: CoordinatorLayout, child: V, directTargetChild: View, target: View, axes: Int, type: Int): Boolean {
        return false
    }

    override fun onNestedPreScroll(coordinatorLayout: CoordinatorLayout, child: V, target: View, dx: Int, dy: Int, consumed: IntArray, type: Int) {}

    override fun onStopNestedScroll(coordinatorLayout: CoordinatorLayout, child: V, target: View, type: Int) {}

    override fun onNestedPreFling(coordinatorLayout: CoordinatorLayout, child: V, target: View, velocityX: Float, velocityY: Float): Boolean {
        return false
    }
}

那么无论何时你想使用：

val bottomSheetBehavior by lazy {
    CustomBottomSheetBehavior.from(bottom_sheet_main)
}

bottom_sheet_main是使用Kotlin Android Extensions的实际视图。

Answer 15

将 bottomSheet onClickListener 设置为 null。

bottomSheet.setOnClickListener(null);

此行仅禁用所有关于 bottomSheet 的操作，不影响内部视图。

Answer 16

调整 peakHeight 值对我有用。

I set the peakheight as the height of bottomsheet if it is expanded.

    private val bottomSheetCallback = object : BottomSheetBehavior.BottomSheetCallback() {
    override fun onSlide(bottomSheet: View, slideOffset: Float) {

    }

    override fun onStateChanged(bottomSheet: View, newState: Int) {
        if (newState == BottomSheetBehavior.STATE_EXPANDED)
            bottomSheetBehavior.peekHeight = bottomSheet.height
    }
}

Answer 17

试试这个。

1) 创建底部 sheet 并在 java class 中声明变量，如

private BottomSheetBehavior sheetBehavior;

2) sheetBehavior = BottomSheetBehavior.from(bottomSheet);

3) 在底部 sheet 回调函数中添加以下行。

sheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
            @Override
            public void onStateChanged(@NonNull View bottomSheet, int newState) {
                switch (newState) {
                    case BottomSheetBehavior.STATE_HIDDEN:
                        Log.d(TAG, "--------------  STATE_HIDDEN");
                        break;
                    case BottomSheetBehavior.STATE_EXPANDED: {
                        Log.d(TAG, "--------------  STATE_EXPANDED");
                    }
                    break;
                    case BottomSheetBehavior.STATE_COLLAPSED: {
                        Log.d(TAG, "--------------  STATE_COLLAPSED");
                    }
                    break;
                    case BottomSheetBehavior.STATE_DRAGGING:
                        sheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                        break;
                    case BottomSheetBehavior.STATE_SETTLING:
                        Log.d(TAG, "--------------  STATE_SETTLING");
                        break;
                }
            }

            @Override
            public void onSlide(@NonNull View bottomSheet, float slideOffset) {

            }
        });

Answer 18

    LayoutInflater inflater = LayoutInflater.from(context);
            View view = inflater.inflate(R.layout.bottomsheet_view_profile_image, null);
            BottomSheetDialog dialog = new BottomSheetDialog(context);
            dialog.setContentView(view);
            dialog.setCancelable(false);


            BottomSheetBehavior behavior = BottomSheetBehavior
                    .from(((View) view.getParent()));
            behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
                @Override
                public void onStateChanged(@NonNull View bottomSheet, int newState) {
                    if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                        behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                    }
                }

                @Override
                public void onSlide(@NonNull View bottomSheet, float slideOffset) {
                }
            });
            behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
            behavior.setSkipCollapsed(true);
            dialog.show();

Answer 19

我在 BottomSheetDialogFragment 中遇到了同样的问题，并使用 dialog 的 behavior 应用了许多解决方案，但其中 none 解决了我的问题，然后我解决了它但是在 dialog.

初始化时设置 setCancelable(false);

DialogEndRide dialogCompleteRide = new DialogEndRide();
dialogCompleteRide.setCancelable(false);
dialogCompleteRide.show(getChildFragmentManager(), "");

这将在 BottomSheetDialogFragment 上禁用手势，您可以使用 dismiss(); 函数以编程方式关闭 dialog。

Answer 20

首先，我只想感谢所有试图给出答案的人。我只是通过按我的意愿解决这个问题来写这个答案。我将通过从这里获得帮助来描述我是如何一步步做到这一点的。

可视化： 单击按钮 Show BottomSheet 后，您将看到 第二个屏幕 。现在您会看到 BottomSheet 只是被锁定以供拖动。但是，如果您单击 Country List，BottomSheet 将会隐藏。这是描述，现在让我们深入研究代码。

首先，将设计支持库添加到您的 build.gradle 文件中：

implementation 'com.android.support:design:28.0.0'
UserLockBottomSheetBehavior.java：信用：James Davis（感谢大佬）

public class UserLockBottomSheetBehavior<V extends View> extends BottomSheetBehavior<V> {

    public UserLockBottomSheetBehavior() {
        super();
    }

    public UserLockBottomSheetBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        return false;
    }

    @Override
    public boolean onTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        return false;
    }

    @Override
    public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, V child, View directTargetChild, View target, int nestedScrollAxes) {
        return false;
    }

    @Override
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed) {
    }

    @Override
    public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target) {
    }

    @Override
    public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY) {
        return false;
    }

}

bottomsheet.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/bottomSheet"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center_vertical"
    android:orientation="vertical"
    app:behavior_hideable="true"
    app:layout_behavior="com.samsolution.custombottomsheet.UserLockBottomSheetBehavior">

 <RelativeLayout
     android:id="@+id/minimizeLayout"
     android:background="@color/colorPrimary"
     android:layout_width="match_parent"
     android:layout_height="?android:attr/actionBarSize">

     <TextView
         android:layout_centerHorizontal="true"
         android:padding="16dp"
         android:layout_width="wrap_content"
         android:layout_height="?android:attr/actionBarSize"
         android:gravity="center_horizontal|center"
         android:text="Country List"
         android:textColor="#FFFFFF"
         android:textStyle="bold" />
 </RelativeLayout>

    <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ListView
            android:id="@+id/homeCountryList"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

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

</LinearLayout>

activity_main.xml

<?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"
    android:background="#FFFFFF"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_gravity="center"
        android:onClick="showCountryListFromBottomSheet">

        <Button
            android:layout_gravity="center"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_red_light"
            android:onClick="showCountryListFromBottomSheet"
            android:padding="16dp"
            android:text="Show BottomSheet"
            android:textAllCaps="false"
            android:textColor="#ffffff" />

    </LinearLayout>

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

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

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private BottomSheetBehavior<LinearLayout> bottomSheetBehavior;                                  // BottomSheet Instance
    LinearLayout bottomsheetlayout;
    String[] list = {"A", "B", "C", "D", "A", "B", "C", "D","A", "B", "C", "D","A", "B", "C", "D","A", "B", "C", "D"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bottomsheetlayout = findViewById(R.id.bottomSheet);
        bottomSheetBehavior = BottomSheetBehavior.from(bottomsheetlayout);

        ListView listView = findViewById(R.id.homeCountryList);
        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,list);
        listView.setAdapter(adapter);

        bottomSheetHide();                                                                          //BottomSheet get hide first time

        RelativeLayout minimizeLayoutIV;                                                            // It will hide the bottomSheet Layout
        minimizeLayoutIV = findViewById(R.id.minimizeLayout);
        minimizeLayoutIV.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               bottomSheetHide();
            }
        });
    }

    public void showCountryListFromBottomSheet(View view) {
        bottomSheetBehavior.setHideable(false);
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
    }

    public void bottomSheetHide(){
        bottomSheetBehavior.setHideable(true);
        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
    }
}

Answer 21

带有 BottomSheetDialogFragment 的示例。它工作得很好。

编辑 09/04/2020： 将折旧 setBottomSheetCallback() 替换为 addBottomSheetCallback()

class FragMenuBDrawer : BottomSheetDialogFragment() {

    ...

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog

        dialog.setOnShowListener {
            val bottomSheet = (it as BottomSheetDialog).findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout?
            val behavior = BottomSheetBehavior.from(bottomSheet!!)
            behavior.state = BottomSheetBehavior.STATE_EXPANDED

            behavior.addBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
                override fun onStateChanged(bottomSheet: View, newState: Int) {
                    if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                        behavior.state = BottomSheetBehavior.STATE_EXPANDED
                    }
                }

                override fun onSlide(bottomSheet: View, slideOffset: Float) {}
            })
        }

        // Do something with your dialog like setContentView() or whatever
        return dialog
    }

    ...
}

Answer 22

预期行为：

BottomSheet 在向下拖动时不关闭
如果在对话框外部触摸，BottomSheet 将关闭 window

代码：

class MyBottomSheet : BottomSheetDialogFragment () {

   override fun onActivityCreated(savedInstanceState: Bundle?) {
       super.onActivityCreated(savedInstanceState)
       disableBottomSheetDraggableBehavior()
   }

   private fun disableBottomSheetDraggableBehavior() {
      this.isCancelable = false
      this.dialog?.setCanceledOnTouchOutside(true)
   }

 }

Answer 23

这是 google 中的第一个结果，所以我认为将简单的解决方案放在这里是公平的：

   private fun disableDragToDismiss() {
    if (dialog is BottomSheetDialog) {
        val bsDialog = dialog as BottomSheetDialog
        bsDialog.behavior.isHideable = false
    } else {
        Log.d(TAG, " BottomSheetDialog with dialog that is not BottomSheetDialog")
    }
}

而不是在 BottomSheetDialogFragment 实现

中从 onCreateView() 调用它

Answer 24

的解决方案大部分对我有用，但有一个问题：底部 sheet 视图后面的视图开始对触摸事件做出反应，如果触摸事件正在发生在底部 sheet 的区域，没有儿童视图。换句话说，如下图所示，当用户在底部 sheet 内滑动手指时，地图开始对其做出反应。

为了解决这个问题，我通过在底部 sheet 视图上设置 touchListener 修改了 onInterceptTouchEvent 方法（其余代码与已接受的解决方案相同）。

override fun onInterceptTouchEvent(
        parent: CoordinatorLayout,
        child: V, event: MotionEvent
    ): Boolean {
        child.setOnTouchListener { v, event ->
            true
        }
        return false
    }

Answer 25

只需使用： bottomSheet.dismissOnDraggingDownSheet = false

从 Material.io 网站复制：

let viewController: ViewController = ViewController() let bottomSheet: MDCBottomSheetController = MDCBottomSheetController(contentViewController: viewController)

// **** 此行防止通过拖动 bottomSheet 关闭 ****

bottomSheet.dismissOnDraggingDownSheet = false

present(bottomSheet, animated: true, completion: nil)

Answer 26

implementation 'com.google.android.material:material:1.2.0-alpha05'

您可以像这样禁用拖动 BottomSheet。

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
            val dialog = BottomSheetDialog(requireContext(), theme)
            dialog.setOnShowListener {
                setBottomSheetExpanded(dialog)
            }
            return dialog
        }
    
   open fun setBottomSheetExpanded(bottomSheetDialog: BottomSheetDialog) {
            val bottomSheet =
                bottomSheetDialog.findViewById<View>(R.id.design_bottom_sheet) as FrameLayout?
            bottomSheet?.let {
                val behavior: BottomSheetBehavior<*> = BottomSheetBehavior.from(bottomSheet)
                val layoutParams = bottomSheet.layoutParams
                bottomSheet.layoutParams = layoutParams
                behavior.state = BottomSheetBehavior.STATE_EXPANDED
                behavior.isDraggable = false / true
            }
        
    }

已编辑）库已更新！你可以使用新的库版本

implementation 'com.google.android.material:material:1.4.0'

例子都一样，祝你好运好代码

Answer 27

和'com.google.android.material:material:1.2.0-alpha06'

适用于 NestedScrollView 和 RecyclerView

示例代码：

    LinearLayout contentLayout = findViewById(R.id.contentLayout);
    sheetBehavior = BottomSheetBehavior.from(contentLayout);
    sheetBehavior.setDraggable(false);

Answer 28

BottomSheetDialog calcDialog = new BottomSheetDialog(this);
View view = getLayoutInflater().inflate(R.layout.bottom_sheet_calc, null);
calcDialog.setContentView(view);
calcDialog.setCancelable(false);

Answer 29

您可以将 android.app.Dialog 与 Gravity.BOTTOM 或 Window 一起使用：

Dialog dialog = new Dialog(this);
dialog.getWindow().getAttributes().gravity = Gravity.BOTTOM;
dialog.show();

如果您想要 BottomSheetDialog 中的动画，请将其添加到您的 styles.xml

<style name="BottomSheetDialog" parent="Theme.Design.Light.BottomSheetDialog">
    <item name="bottomSheetStyle">@style/bottomSheetStyleWrapper</item>
</style>

<style name="bottomSheetStyleWrapper" parent="Widget.Design.BottomSheet.Modal">
    <item name="android:background">@android:color/transparent</item>
</style>

并在 Java 代码中：

Dialog dialog = new Dialog(this, R.style.BottomSheetDialog);

Answer 30

仅供参考：遵循 Material UI 最佳实践，您必须创建自己的 class，扩展 BottomSheetDialogFragment。在此 class 中，您可以覆盖 onStart 方法并在其中添加此代码：

dialog?.let {
            val bottomSheet = it.findViewById<View>(
                com.google.android.material.R.id.design_bottom_sheet
            ) as FrameLayout
            val behavior = BottomSheetBehavior.from(bottomSheet)

            behavior.state = BottomSheetBehavior.STATE_EXPANDED
            behavior.isDraggable = false
        }

非常适合我

Answer 31

在您的 onCreateView 函数中调用此方法，使底部工作表不可关闭、不可取消和不可拖动（使用适用于您的用例的任何内容）：

    private fun disableDialog() {
        this.dialog?.let { bottomSheet ->
            // Disable dismiss on outside touch
            bottomSheet.setCanceledOnTouchOutside(false)

            // Hide the cancel button
            bottomSheet.setCancelable(false)

            // Disable back key press
            bottomSheet.setOnKeyListener { _, keyCode, _ ->
                keyCode == KeyEvent.KEYCODE_BACK
            }

            // Make it non-draggable
            bottomSheet.setOnShowListener {
                (it as BottomSheetDialog).behavior.setDraggable(false)
            }
        }
    }

Answer 32

防止用户将底部 sheet 拖到 dismiss/open

    bottomSheetDialog_OverView = new BottomSheetDialog(context);
    View dialogView = View.inflate(context, R.layout.dialog_overview, null);
    bottomSheetDialog_OverView.getBehavior().setDraggable(false);

Answer 33

对于使用 BottomSheetDialogFragment() 扩展的对话框，只需使用这些

禁用滑动功能

if (dialog?.window != null) {
   dialog!!.setCancelable(false)
}

启用滑动功能

if (dialog?.window != null) {
   dialog!!.setCancelable(true)
}

Answer 34

val behavior = BottomSheetBehavior.from(bottomSheet)
behaviour.isDraggable = false

禁用用户在 BottomSheet 上拖动

Disabling User dragging on BottomSheet

android

android-support-library

android-support-design

bottom-sheet