我有一个自定义的bittomsheetdialogfragment，我想在底部视图的顶部有圆角
这是我的自定义类，它膨胀了我想要从底部显示的布局
View mView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.charge_layout, container, false);
initChargeLayoutViews();
return mView;
}
我还有这个XML资源文件作为背景:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<corners android:topRightRadius="35dp"
android:topLeftRadius="35dp"
/>
<solid android:color="@color/white"/>
<padding android:top="10dp"
android:bottom="10dp"
android:right="16dp"
android:left="16dp"/>
</shape>
问题是，当我把这个资源文件设置为我的布局的根元素的背景，角仍然不是圆角。
我不能使用以下代码:
this.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.charge_layout_background);
因为它覆盖了底部对话框的默认背景，底部视图上方不会有任何半透明的灰色。
我今天也检查了同样的事情，是的，你是对的，下面的代码
this.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.charge_layout_background);
这适用于片段背景，所以相反，你应该从对话框窗口获得底部表视图，并改变背景，这里是代码
@SuppressLint("RestrictedApi")
@Override
public void setupDialog(Dialog dialog, int style) {
super.setupDialog(dialog, style);
View rootView = getActivity().getLayoutInflater().inflate(R.layout.view_member_info,null,false);
unbinder = ButterKnife.bind(this, rootView);
adjustUIComponents();
dialog.setContentView(rootView);
FrameLayout bottomSheet = (FrameLayout) dialog.getWindow().findViewById(android.support.design.R.id.design_bottom_sheet);
bottomSheet.setBackgroundResource(R.drawable.container_background);
}
这里的底部是你想要改变的实际视图。
我今天也检查了同样的事情，是的，你是对的，下面的代码
this.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.charge_layout_background);
这适用于片段背景，所以相反，你应该从对话框窗口获得底部表视图，并改变背景，这里是代码
@SuppressLint("RestrictedApi")
@Override
public void setupDialog(Dialog dialog, int style) {
super.setupDialog(dialog, style);
View rootView = getActivity().getLayoutInflater().inflate(R.layout.view_member_info,null,false);
unbinder = ButterKnife.bind(this, rootView);
adjustUIComponents();
dialog.setContentView(rootView);
FrameLayout bottomSheet = (FrameLayout) dialog.getWindow().findViewById(android.support.design.R.id.design_bottom_sheet);
bottomSheet.setBackgroundResource(R.drawable.container_background);
}
这里的底部是你想要改变的实际视图。
这对我很管用。
创建一个背景绘图(例如命名为shape_rounded_dialog):
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@color/color_white" />
<corners android:topLeftRadius="16dp"
android:topRightRadius="16dp" />
</shape>
添加下面的样式:
<style name="AppBottomSheetDialogTheme"
parent="Theme.MaterialComponents.Light.BottomSheetDialog">
<item name="bottomSheetStyle">@style/CustomBottomSheetStyle</item>
</style>
<style name="CustomBottomSheetStyle"
parent="Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/shape_rounded_dialog</item>
</style>
在你的DialogFragment中，重写getTheme()方法来返回你的样式。
@Override
public int getTheme() {
return R.style.AppBottomSheetDialogTheme;
}
你必须改变底部的主题，以实现顶部圆形布局
创建一个自定义绘制background_bottom_sheet_dialog_fragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:topLeftRadius="8dp"
android:topRightRadius="8dp" />
<padding android:top="0dp" />
<solid android:color="@color/white" />
</shape>
然后在styles.xml上使用drawable作为背景覆盖bottomSheetDialogTheme:
<!--Bottom sheet-->
<style name="BottomSheet" parent="@style/Widget.Design.BottomSheet.Modal">
<item
name="android:background">@drawable/background_bottom_sheet_dialog_fragment
</item>
</style>
<style name="BaseBottomSheetDialog"
parent="@style/Theme.Design.Light.BottomSheetDialog">
<item name="android:windowIsFloating">false</item>
<item name="bottomSheetStyle">@style/BottomSheet</item>
</style>
<style name="BottomSheetDialogTheme" parent="BaseBottomSheetDialog" />
这将改变你的底页的背景布局
BottomSheetDialog
class SheetFragment() : BottomSheetDialogFragment() {
lateinit var binding: SheetFragmentBinding;
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog;
val view = View.inflate(context, R.layout.fragment_bottom_sheet, null);
binding = DataBindingUtil.bind(view)!!;
binding.viewModel = SheetFragmentVM();
dialog.setContentView(view);
var bottomSheetBehavior = BottomSheetBehavior.from(view.parent as View);
bottomSheetBehavior.setPeekHeight(BottomSheetBehavior.PEEK_HEIGHT_AUTO);
bottomSheetBehavior.setBottomSheetCallback(object :
BottomSheetBehavior.BottomSheetCallback() {
override fun onStateChanged(bottomSheet: View, newState: Int) {
if (BottomSheetBehavior.STATE_EXPANDED == newState) {
// do on STATE_EXPANDED
}
if (BottomSheetBehavior.STATE_COLLAPSED == newState) {
// do on STATE_COLLAPSED
}
if (BottomSheetBehavior.STATE_HIDDEN == newState) {
dismiss()
}
}
override fun onSlide(bottomSheet: View, slideOffset: Float) {
// do on slide
}
})
return dialog
}
简单的解决方案:
class TopRoundedCornersFragment : BottomSheetDialogFragment() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setStyle(STYLE_NORMAL, R.style.AppBottomSheetDialogTheme)
}
}
在styles.xml
<style name="BottomSheetStyle" parent="Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/bottom_sheet_dialog_bg</item>
</style>
<style name="AppBottomSheetDialogTheme" parent="Theme.Design.Light.BottomSheetDialog">
<item name="bottomSheetStyle">@style/BottomSheetStyle</item>
</style>
最后，创建一个顶部圆角可绘制资源(bottom_sheet_dialog_bg.xml)
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/white" />
<corners
android:topLeftRadius="4dp"
android:topRightRadius="4dp" />
</shape>
