如何在矩形边上打一个半圆孔？

Question

我需要制作一个中间有一个圆孔的长方形

Answer 1

获取方式多种多样
您可以使用 Material 组件库和 MaterialShapeDrawable 创建自定义形状路径（您需要版本 1.1.0）

例如，您可以执行以下操作：

LinearLayout linearLayout= findViewById(R.id.linear_rounded);
//Use the BottomAppBarTopEdgeTreatment to apply the bottom edge shape, or just create a custom class to obtain a similar shape
BottomAppBarTopEdgeTreatment bottomAppBarTopEdgeTreatment = new BottomAppBarTopEdgeTreatment(
    getResources().getDimension(R.dimen.margin),
    getResources().getDimension(R.dimen.rounded_corner),
    getResources().getDimension(R.dimen.vertical_offset)
);
bottomAppBarTopEdgeTreatment.setFabDiameter(getResources().getDimension(R.dimen.diameter));

ShapeAppearanceModel shapeAppearanceModel = new ShapeAppearanceModel()
    .toBuilder()
    .setAllCorners(CornerFamily.ROUNDED,radius)
    .setBottomLeftCorner(CornerFamily.ROUNDED,0)  
    .setBottomRightCorner(CornerFamily.ROUNDED,0)
    .setBottomEdge(bottomAppBarTopEdgeTreatment)
    .build();
MaterialShapeDrawable shapeDrawable = new MaterialShapeDrawable(shapeAppearanceModel);
ViewCompat.setBackground(linearLayout,shapeDrawable);

如何在矩形边上打一个半圆孔？

How to make a semicircular Hole in a rectangle side?

geometry

android

shapes

draw

android-shapedrawable