recyclerView在条目间添加分割线。

来源：互联网发布：修道士 python 编辑：程序博客网时间：2024/05/22 03:23

思路一：

继承ItemDecoration，自定义。

public class SimpleDividerItemDecoration extends RecyclerView.ItemDecoration {    private Drawable mDivider;    private int mDividerHeight;    public SimpleDividerItemDecoration(Context context, int mDividerHeight) {        this(context, null, mDividerHeight);    }    public SimpleDividerItemDecoration(Context context, Drawable mDivider, int mDividerHeight) {        if (mDivider == null) {            this.mDivider = ContextCompat.getDrawable(context, R.drawable.line_divider);        } else {            this.mDivider = mDivider;        }        this.mDividerHeight = mDividerHeight;    }    @Override    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {        super.getItemOffsets(outRect, view, parent, state);        outRect.set(0, 0, 0, mDividerHeight);    }    @Override    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {        super.onDrawOver(c, parent, state);        int left = parent.getPaddingLeft();        int right = parent.getWidth() - parent.getPaddingRight();        int childCount = parent.getChildCount();        for (int i = 0; i < childCount; i++) {            View child = parent.getChildAt(i);            RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();            int top = child.getBottom() + layoutParams.bottomMargin;            int bottom = top + mDividerHeight;            mDivider.setBounds(left, top, right, bottom);            mDivider.draw(c);        }    }}

line_divider.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <size        android:width="1dp"        android:height="1dp" />    <solid android:color="#4000"></solid></shape>

思路二：

直接在条目布局里画一个view。

 <View        android:layout_width="match_parent"        android:layout_height="1dp"        android:background="#44000000" />

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