Class 在 kotlin 中创建 LayerDrawable 时抛出异常

Class cast exception while create LayerDrawable in kotlin

我现在在 kotlin 上重写了我的旧 java 代码,我有一个问题,我需要这段代码的 kotlin 模拟:

Drawable[] layers = new Drawable[]{
    colorDrawable,
    border
};

LayerDrawable drawable = new LayerDrawable(layers);

在科特林我现在有:

val border = GradientDrawable()
border.shape = GradientDrawable.RECTANGLE
border.setStroke(CommonsUtils.dpToPx(holder.itemView, 1), Color.parseColor("#DEDEDE"))
border.cornerRadius = CommonsUtils.dpToPx(holder.itemView, 2).toFloat()

val colorDrawable = try {
    Color.parseColor(color.hex)
} catch (e: Exception) {
    e.printStackTrace()
    ColorDrawable(Color.parseColor("#FFFFFF"))
}

val layers = arrayOf(colorDrawable, border)
val drawable = LayerDrawable(layers as Array<out Drawable>)

但是 arrayOf returns Array of "Any" 而不是 Array of "out Drawable" 我有 class 将异常 Object[] 转换为 Drawable[].

改为:

val colorDrawable = try {
    ColorDrawable(Color.parseColor(color.hex))
} catch (e: Exception) {
    e.printStackTrace()
    ColorDrawable(Color.parseColor("#FFFFFF"))
}

Color.parseColor(color.hex) returns int 不是 Drawable