最近遇到一個問題，用RecyclerView顯示數據，縱向列表顯示，添加默認分割線。
問題是：底部也會顯示分割線，這很影響美觀。
怎么解決這個問題呢？我想了很多辦法，毫無頭緒。。。
最后，查看默認分割線的類DividerItemDecoration的源碼：
public class DividerItemDecoration extends ItemDecoration { private static final int[] ATTRS = new int[]{16843284}; public static final int HORIZONTAL_LIST = 0; public static final int VERTICAL_LIST = 1; private Drawable mDivider; private int mOrientation; public DividerItemDecoration(Context context, int orientation) { TypedArray a = context.obtainStyledAttributes(ATTRS); this.mDivider = a.getDrawable(0); a.recycle(); this.setOrientation(orientation); } public void setOrientation(int orientation) { if(orientation != 0 && orientation != 1) { throw new IllegalArgumentException("invalid orientation"); } else { this.mOrientation = orientation; } } public void onDraw(Canvas c, RecyclerView parent) { if(this.mOrientation == 1) { this.drawVertical(c, parent); } else { this.drawHorizontal(c, parent); } } public void drawVertical(Canvas c, RecyclerView parent) { 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); LayoutParams params = (LayoutParams)child.getLayoutParams(); int top = child.getBottom() + params.bottomMargin; int bottom = top + this.mDivider.getIntrinsicHeight(); this.mDivider.setBounds(left, top, right, bottom); this.mDivider.draw(c); } } public void drawHorizontal(Canvas c, RecyclerView parent) { int top = parent.getPaddingTop(); int bottom = parent.getHeight() - parent.getPaddingBottom(); int childCount = parent.getChildCount(); for(int i = 0; i < childCount; ++i) { View child = parent.getChildAt(i); LayoutParams params = (LayoutParams)child.getLayoutParams(); int left = child.getRight() + params.rightMargin; int right = left + this.mDivider.getIntrinsicHeight(); this.mDivider.setBounds(left, top, right, bottom); this.mDivider.draw(c); } } public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) { if(this.mOrientation == 1) { outRect.set(0, 0, 0, this.mDivider.getIntrinsicHeight()); } else { outRect.set(0, 0, this.mDivider.getIntrinsicWidth(), 0); } }}因為我用到的是垂直列表，用到的是紅色字體處的代碼：
public void drawVertical(Canvas c, RecyclerView parent) { 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); LayoutParams params = (LayoutParams)child.getLayoutParams(); int top = child.getBottom() + params.bottomMargin; int bottom = top + this.mDivider.getIntrinsicHeight(); this.mDivider.setBounds(left, top, right, bottom); this.mDivider.draw(c); } }從代碼中很容易看出只要修改for循環中的內容就可去掉底部的分割線：
public void drawVertical(Canvas c, RecyclerView parent) { int left = parent.getPaddingLeft(); int right = parent.getWidth() - parent.getPaddingRight(); int childCount = parent.getChildCount(); for(int i = 0; i < childCount-1; ++i) { View child = parent.getChildAt(i); LayoutParams params = (LayoutParams)child.getLayoutParams(); int top = child.getBottom() + params.bottomMargin; int bottom = top + this.mDivider.getIntrinsicHeight(); this.mDivider.setBounds(left, top, right, bottom); this.mDivider.draw(c); } }因為這個類我們不能直接修改，所以我們可以自定義一個類，修改相應內容，
添加分割線的時候，使用自定義類。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
新聞熱點
疑難解答
