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。
我知道这个问题已经有了一个公认的答案。我想要记录我经历的问题,以及我最终是如何让它工作的,这样它对未来的人是有用的。
Firstly, I was using Theme.AppCompat.Light.DarkActionBar as the parent for our AppTheme. This meant @Gabriele Mariotti solution kept crashing with the error Could not inflate Behavior subclass com.google.android.material.bottomsheet.BottomSheetBehavior. I fixed this by simply changing the parent to Theme.MaterialComponents.Light.DarkActionBar. This did not affect our theme in any way but the RTE was gone. You can also fix this issue by simply including the require items to your style. But I didn't bother figuring out which styles were required by BottomSheetBehavior.
其次,尝试我可能,但我不能得到实际的框架布局(这是BottomSheetDialogFragment)使用圆角。我意识到,将此设置为图像Drawable工作,但不适用于形状或@null。事实证明,这是因为我使用的LinearLayout有一个定义的背景。这覆盖了样式中的任何背景。去掉它最终会产生圆角。
此外,我不需要设置任何背景形状来圆角。@Gabriele Mariotti的解决方案在我做出上述更改后立即起作用。然而,为了设置我想要的背景色,我必须覆盖“backgroundTint”项。
PS:我是Android开发的新手,我正在维护一个旧的应用程序,这是我们学院内部使用的。我不是很熟悉Android的布局系统或材料库。我想这就是为什么我花了3天时间才弄明白。我希望这对将来的人有用。
创建一个名为rounded_corners_shape的形状
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:topLeftRadius="8dp"
android:topRightRadius="8dp"/>
<solid android:color="@color/white"/>
</shape>
定义一个样式
<style name="AppBottomSheetDialogTheme"
parent="Theme.Design.Light.BottomSheetDialog">
<item name="bottomSheetStyle">@style/AppModalStyle</item>
</style>
<style name="AppModalStyle" parent="Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/rounded_corners_shape</item>
</style>
在你的自定义BottomSheetDialogFragment上使用这种风格,它会工作的!
public class CustomDialogFragment extends BottomSheetDialogFragment {
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(STYLE_NORMAL, R.style. AppBottomSheetDialogTheme);
}
...
}
添加圆角形状,使其为你的根布局的背景
<?xml version="1.0" encoding="utf-8" ?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:topLeftRadius="@dimen/padding_margin_16_dp"
android:topRightRadius="@dimen/padding_margin_16_dp" />
<solid android:color="@color/white" />
</shape>
在你的BottomSheetDialogFragment上使背景透明
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
(view?.parent as View).setBackgroundColor(Color.TRANSPARENT)
}
它的工作为约束布局,框架布局,线性布局,相对布局。
创建一个自定义绘制的rounded_dialog.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/white"/>
<corners android:topLeftRadius="16dp"
android:topRightRadius="16dp"/>
</shape>
然后在styles.xml上使用drawable作为背景覆盖bottomSheetDialogTheme:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="bottomSheetDialogTheme">@style/AppBottomSheetDialogTheme</item>
</style>
<style name="AppBottomSheetDialogTheme"
parent="Theme.Design.Light.BottomSheetDialog">
<item name="bottomSheetStyle">@style/AppModalStyle</item>
</style>
<style name="AppModalStyle"
parent="Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/rounded_dialog</item>
</style>
这将改变你的应用程序的所有底部对话框。
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>
Create a shape drawable .. which we will use as background for bottom sheet .
Provide the appropriate value for radius of top left and right corner .
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:topLeftRadius="24dp"
android:topRightRadius="24dp" />
<padding android:top="2dp" />
<solid android:color="@color/white" />
</shape>
Now create style for " Bottom sheet dialog fragment "
<style name="BottomSheet" parent="@style/Widget.Design.BottomSheet.Modal">
<item name="android:background">@drawable/drawable_bottomsheet_background</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" />
Now create a custom class that will extend BottomSheetDilogFragment ,where you provide your style .
open class CustomRoundBottomSheet : BottomSheetDialogFragment() {
override fun getTheme(): Int = R.style.BottomSheetDialogTheme
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog = BottomSheetDialog(requireContext(), theme)
}
Now use this class wherever you want to have round corner bottom sheet .
eg
class BottomSheetSuccess : CustomRoundBottomSheet() {
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.bottomsheet_shopcreate_success, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
}
}