Android 四边切角

Question

我想在 android 中获得一个带有四边切角的可绘制形状，如下所示：

Answer 1

通过材质组件库，您可以使用MaterialShapeDrawable 到draw custom shapes。

使用 TextView 您可以：

    <TextView
        android:id="@+id/textview"
        android:backgroundTint="@color/...."
        android:layout_height="48dp"
        android:gravity="center"
        ../>

然后创建MaterialShapeDrawable:

TextView textView = findViewById(R.id.textview);
ShapeAppearanceModel shapeAppearanceModel = new ShapeAppearanceModel()
        .toBuilder()
        .setAllCorners(new CutCornerTreatment()).setAllCornerSizes(new RelativeCornerSize(0.5f))
        .build();

MaterialShapeDrawable shapeDrawable = new MaterialShapeDrawable(shapeAppearanceModel);
//Set the stroke
shapeDrawable.setStroke(2.0f,
            ContextCompat.getColorStateList(this,R.color.colorSecondaryDark));
//Apply the shapeDrawable as background in the TextView  
ViewCompat.setBackground(textView,shapeDrawable);

只是关于new RelativeCornerSize(0.5f) 的注释：它在1.2.0-beta01 中发生了变化。之前是new RelativeCornerSize(50)。