我已经实现了一个底部工作表对话框,我想防止当用户在偷看时触摸底部工作表外部时底部工作表关闭(未完全展开状态(。
我已经在代码中设置了dialog.setCanceledOnTouchOutside(false);
,但它似乎没有任何影响。
这是我的 BottomSheetDialogFragment 类:
public class ShoppingCartBottomSheetFragment extends BottomSheetDialogFragment {
private BottomSheetBehavior.BottomSheetCallback mBottomSheetBehaviorCallback = new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
if (newState == BottomSheetBehavior.STATE_HIDDEN) {
dismiss();
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
}
};
@Override
public void setupDialog(Dialog dialog, int style) {
super.setupDialog(dialog, style);
View contentView = View.inflate(getContext(), R.layout.fragment_shopping_cart_bottom_sheet, null);
dialog.setCanceledOnTouchOutside(false);
dialog.setContentView(contentView);
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) ((View) contentView.getParent()).getLayoutParams();
CoordinatorLayout.Behavior behavior = params.getBehavior();
if( behavior != null && behavior instanceof BottomSheetBehavior ) {
((BottomSheetBehavior) behavior).setBottomSheetCallback(mBottomSheetBehaviorCallback);
((BottomSheetBehavior) behavior).setPeekHeight(97);
((BottomSheetBehavior) behavior).setHideable(false);
}
}
@Override
public void onStart() {
super.onStart();
Window window = getDialog().getWindow();
WindowManager.LayoutParams windowParams = window.getAttributes();
windowParams.dimAmount = 0;
windowParams.flags |= WindowManager.LayoutParams.FLAG_DIM_BEHIND;
window.setAttributes(windowParams);
}
}
根据 BottomSheet 规范,可以通过触摸底板外部来关闭底板,因此我有什么选项可以覆盖此行为并防止它被关闭?
创建实例时应使用#setCancelable(false)
。
BottomSheetDialogFragment bottomSheetDialogFragment = new SequenceControlFragmentBottomSheet();
bottomSheetDialogFragment.setCancelable(false);
bottomSheetDialogFragment.show(getChildFragmentManager(), bottomSheetDialogFragment.getTag());
简单的底表对话框的情况下,上述所有答案都有点复杂 只是使用可取消的 因为它可以防止在对话框之外滚动和单击。
mBottomSheetDialog.setCancelable(false)
mBottomSheetDialog.setCanceledOnTouchOutside(false)
只需将其用于简单的底表对话框即可。它对我有用。
setCancelable(false)
也会防止底部在按背时关闭。如果我们查看 android 设计支持库中底部工作表的布局资源,有一个 ID 为 touch_outside
的 View 组件,并且在 BottomSheetDialog
的方法 wrapInBottomSheet
中设置了一个OnClickListener
,用于检测外部点击并关闭对话框。因此,为了防止在底板外触摸时取消,我们需要 移除OnClickListener
.
将这些行添加到onActivityCreated
方法(或onCreateView
之后的任何其他生命周期方法(。
@Override public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
View touchOutsideView = getDialog().getWindow()
.getDecorView()
.findViewById(android.support.design.R.id.touch_outside);
touchOutsideView.setOnClickListener(null);
}
此外,如果要通过向下滑动来防止底部工作表关闭,请更改底部工作表对话框行为可隐藏 false。若要setHideable(false)
将以下代码添加到 onCreateDialog
方法。
@Override public Dialog onCreateDialog(Bundle savedInstanceState) {
final BottomSheetDialog bottomSheetDialog =
(BottomSheetDialog) super.onCreateDialog(savedInstanceState);
bottomSheetDialog.setOnShowListener(new DialogInterface.OnShowListener() {
@Override public void onShow(DialogInterface dialog) {
FrameLayout bottomSheet =
bottomSheetDialog.findViewById(android.support.design.R.id.design_bottom_sheet);
if (null != bottomSheet) {
BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
behavior.setHideable(false);
}
}
});
return bottomSheetDialog;
}
最简单的方法是在 BottomSheetDialogFragment 的对话框中将setCanceledOnTouchOutside
设置为 false。 与科特林,
class XFragment : BottomSheetDialogFragment() {
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
dialog?.setCanceledOnTouchOutside(false)
}
}
M. Erfan Mowlaei 的答案很有用,但我正在寻找一种方法来在每次创建类的实例时强制执行此行为,而不必记住调用setCancelable(false)
。见下文。
class MyBottomSheet : BottomSheetDialogFragment() {
companion object {
fun newInstance() = MyBottomSheet().apply {
isCancelable = false
}
}
}
我尝试了所有答案,但这是最好的工作解决方案
唯一对我有用的东西
风格.xml
<style name="BottomSheetDialogTheme" parent="@style/Theme.Design.Light.BottomSheetDialog">
<item name="android:statusBarColor">@android:color/transparent</item>
<item name="android:windowIsFloating">false</item>
<item name="android:windowSoftInputMode">adjustResize|stateAlwaysVisible</item>
<item name="android:navigationBarColor">@color/white</item>
<item name="bottomSheetStyle">@style/BottomSheet</item>
</style>
<!-- set the rounded drawable as background to your bottom sheet -->
<style name="BottomSheet" parent="@style/Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/bg_bottom_sheet_dialog_fragment</item>
</style>
圆角底部工作表对话框片段
open class RoundedBottomSheetDialogFragment : BottomSheetDialogFragment() {
override fun getTheme(): Int = R.style.BottomSheetDialogTheme
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return BottomSheetDialog(requireContext(), theme)
}
}
class UserDetailsSheet : RoundedBottomSheetDialogFragment() {
init {
isCancelable = false
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.user_info_fragment, container, false)
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val dialog = super.onCreateDialog(savedInstanceState)
dialog.setCancelable(false)
dialog.setCanceledOnTouchOutside(false)
return dialog
}
}
我可以看到很多答案,但无法让它们工作,在这里找到了这个不错的博尔格帖子
这是上面用户@shijo提出的解决方案之上的另一个解决方案。我为BottomSheetDialogFragment
所做的只是遵循onActivityCreated
中的代码片段,并能够实现这两种行为。
-
禁用可拖动行为。
-
禁用在外面触摸时取消。
override fun onActivityCreated(savedInstanceState: Bundle?) { super.onActivityCreated(savedInstanceState) val dialog = dialog as BottomSheetDialog? val bottomSheet = dialog?.findViewById<FrameLayout>(com.google.android.material.R.id.design_bottom_sheet) val behavior: BottomSheetBehavior<View> = BottomSheetBehavior.from(bottomSheet as View) behavior.state = BottomSheetBehavior.STATE_EXPANDED behavior.peekHeight = 0 // Disable Draggable behavior behavior.isDraggable = false // Disable cancel on touch outside val touchOutsideView = getDialog()?.window?.decorView?.findViewById<View>(com.google.android.material.R.id.touch_outside) touchOutsideView?.setOnClickListener(null)
这为我创造了奇迹。由于我的底表UX要求它是不可取消和不可拖动的,因此我能够通过这些更改正确实现它。
尝试 Kotlin 方式
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
dialog?.setCancelable(false)
dialog?.setCanceledOnTouchOutside(false)
view.viewTreeObserver.addOnGlobalLayoutListener {
val dialog = dialog as BottomSheetDialog?
val bottomSheet =
dialog!!.findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout
val behavior = BottomSheetBehavior.from(bottomSheet)
behavior.state = BottomSheetBehavior.STATE_EXPANDED
behavior.peekHeight = 0
behavior.isDraggable = false
}
}
我觉得以上所有答案都有点不完整,我会解释原因。
- setCancelable 将停止外部点击行为,但它也会阻止您的底表DialoagFragment从后按。
- 很少有答案会覆盖 setCancelable(( 方法来管理外部点击,这有点复杂,因为您需要处理可取消和可隐藏。
溶液
override fun onStart() {
super.onStart()
stopOutsideClick()
}
private fun stopOutsideClick() {
val touchOutsideView = dialog?.window?.decorView?.findViewById<View>(com.google.android.material.R.id.touch_outside)
touchOutsideView?.setOnClickListener(null)
}
您必须在 onStart(( 中调用此方法,其中对话框的实例将始终存在。
简单而简短的工作解决方案
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getDialog().setCanceledOnTouchOutside(false);
}
覆盖自定义对话框片段中的onActivityCreated()
底部工作表对话片段的方法,并setCanceledOnTouchOutside(false)
在 kotlin 中就是这么简单,你可以这样做;
class MyBottomSheetDialog : BottomSheetDialogFragment() {
/*********/
override fun onCreateDialog(savedInstanceState: Bundle?) =
super.onCreateDialog(savedInstanceState).apply {
setCanceledOnTouchOutside(false)
setOnShowListener { expand() } /**to Expand your bottomSheet according to the content**/
}
/*******/
}
我遇到了同样的问题。但是我需要防止底部工作表碎片通过单击外部关闭,但要留出向下滑动关闭的机会。只需将变量isHideable: Boolean
添加到您的 BSFragment 类并添加下一个代码段
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val dialog = super.onCreateDialog(savedInstanceState)
dialog.setOnShowListener {
val d = dialog as BottomSheetDialog
val bottomSheet =
d.findViewById<FrameLayout>(com.google.android.material.R.id.design_bottom_sheet)
BottomSheetBehavior.from(bottomSheet!!).state = initialState()
BottomSheetBehavior.from(bottomSheet).setHideable(isHideable)
}
return dialog
}
当你调用你的片段时 - 设置 isHideable 为 true
private fun showBSFragmentDialog() {
val bSFDialog = BSFragment.newInstance()
bSFDialog.isCancelable = false
bSFDialog.isHideable = true
bSFDialog.show(supportFragmentManager, "bSFDialog") }
现在用户无法通过单击外部关闭它,但能够向下滑动并关闭对话框
,我正在寻找相反的方法,当我单击外部时关闭BottomSheetDialogFragment
:
class MyBottomSheetDialogFragment : BottomSheetDialogFragment() {
...
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
super.onCreateDialog(savedInstanceState).apply {
setCanceledOnTouchOutside(true)
}
}
要禁用外部单击时的取消,只需将值设置为 false