为DividerItemDecoration设置drawable

Question

我正在尝试为DividerItemDecoration设置我的自定义drawable(行),但没有成功.哪里出错了？

DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(getContext(),
                LinearLayoutManager.VERTICAL);
dividerItemDecoration.setDrawable(getContext().getResources().getDrawable(R.drawable.sk_line_divider));

XML形状:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="line">
    <stroke
        android:width="1dp"
        android:color="#000000">
    </stroke>
</shape>

Answer 1

将形状更改为矩形.

例如:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle">
    <size
        android:width="1dp"
        android:height="1dp" />
    <solid android:color="@color/primary" />
</shape>

Answer 2

程序化（解决方案）：

如果您只想更改分隔线的颜色而不是创建自定义可绘制对象，则可以使用 ColorDrawable：

DividerItemDecoration itemDecoration = new DividerItemDecoration(recyclerView.getContext(), DividerItemDecoration.VERTICAL);
itemDecoration.setDrawable(new ColorDrawable(R.color.greycc));
recyclerView.addItemDecoration(itemDecoration);

如果除了颜色之外尺寸也很重要，您可以使用 GradientDrawable：

DividerItemDecoration itemDecoration = new DividerItemDecoration(recyclerView.getContext(), DividerItemDecoration.VERTICAL);

GradientDrawable drawable = new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, new int[]{0xfff7f7f7, 0xfff7f7f7});
drawable.setSize(1,1);
itemDecoration.setDrawable(drawable);

recyclerView.addItemDecoration(itemDecoration);

请注意，在数组中设置颜色值需要完整的十六进制值八位组，否则将显示不正确的颜色，即 0x FF 3E3E3E 而不是 0X3E3E3E。

彩色分隔线更新 (2023)：

val itemDecoration = DividerItemDecoration(this, DividerItemDecoration.VERTICAL)
itemDecoration.setDrawable(
ResourcesCompat.getDrawable(resources, android.R.color.holo_green_light, theme)!!
)
recyclerView.addItemDecoration(itemDecoration)

Answer 3

如果您想更改分隔线颜色，您可以通过添加此行从 AppTheme 中更改它
<item name="android:listDivider">@color/your_color</item>