Question

我试图为DividerItemDecoration设置我的自定义drawable（行），但没有成功。错误在哪里？

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

DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(getContext(),
                LinearLayoutManager.HORIZONTAL);
dividerItemDecoration.setDrawable(getContext().getResources().getDrawable(R.drawable.line_decoration));
        recyclerView.addItemDecoration(dividerItemDecoration);
        DividerItemDecoration dividerItemDecorationVertical = new DividerItemDecoration(getContext(),
                LinearLayoutManager.VERTICAL);

        dividerItemDecorationVertical.setDrawable(getContext().getResources().getDrawable(R.drawable.line_decoration));
        recyclerView.addItemDecoration(dividerItemDecorationVertical);

Answer 3

解决方案（以编程方式）：

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);

如果大小很重要，除了颜色之外，您还可以使用GradientDrawwable：

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十六进制值的完整八位位组，否则将显示不正确的颜色，即0x FF 3E3E3E而不是0X3E3E3E

Answer 4

如果要更改分隔线颜色，可以通过添加以下行从AppTheme中更改它
<item name="android:listDivider">@color/your_color</item>

为DividerItemDecoration设置drawable

4 个答案: