使用代码实现Shape

xml代码

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/white" />

    <corners android:radius="5dp" />

    <stroke
        android:width="1dp"
        android:color="@color/questionBankLightPurple" />
</shape>

Java代码：

获取得drawable,发现其实返回的是一个 android.graphics.drawable.GradientDrawable；

/**
 * 产生shape类型的drawable
 *
 * @param solidColor
 * @param strokeColor
 * @param strokeWidth
 * @param radius
 * @return
 */
public static GradientDrawable getDrawable(int solidColor, int strokeColor, int strokeWidth, float radius) {
    GradientDrawable drawable = new GradientDrawable();
    drawable.setColor(solidColor);
    drawable.setStroke(strokeWidth, strokeColor);
    drawable.setCornerRadius(radius);
    return drawable;
}