浅谈AndroidRecyclerView间距全适配

本文介绍了Android RecyclerView 间距全适配，分享给大家，具体如下：

成都创新互联从2013年开始，是专业互联网技术服务公司，拥有项目网站制作、成都做网站网站策划，项目实施与项目整合能力。我们以让每一个梦想脱颖而出为使命，1280元路桥做网站,已为上家服务,为路桥各地企业和个人服务,联系电话:028-86922220

LinearLayoutManager spacing

import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;
/**
 * Created by anonymous on 2016/9/9 0009.
 * <p>
 * SpacesItemDecoration
 * <p>
 * mRecyclerView.addItemDecoration(new SpacesItemDecoration(5));
 */
public class SpacesItemDecoration extends RecyclerView.ItemDecoration {
  private int space;
  public SpacesItemDecoration(int space) {
    this.space = space;
  }

  @Override
  public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
    outRect.left = space;
    outRect.right = space;
    outRect.bottom = space;
    // Add top margin only for the first item to avoid double space between items
    if (parent.getChildLayoutPosition(view) == 0) {
      outRect.top = space;
    } else {
      outRect.top = 0;
    }
  }
}

使用方法很简单，上面注释中也已经给出：

mRecyclerView.addItemDecoration(new SpacesItemDecoration(5));

GridLayoutManager or StaggeredGridLayoutManager spacing

import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;
/**
 * Created by anonymous on 2016/9/9 0009.
 * <p>
 * GridSpacingItemDecoration
 * <p>
 * int spanCount = 3; // 3 columns
 * int spacing = 50; // 50px
 * boolean includeEdge = false;
 * recyclerView.addItemDecoration(new GridSpacingItemDecoration(spanCount, spacing, includeEdge));
 */
public class GridSpacingItemDecoration extends RecyclerView.ItemDecoration {
  private int spanCount;
  private int spacing;
  private boolean includeEdge;

  public GridSpacingItemDecoration(int spanCount, int spacing, boolean includeEdge) {
    this.spanCount = spanCount;
    this.spacing = spacing;
    this.includeEdge = includeEdge;
  }

  @Override
  public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
    int position = parent.getChildAdapterPosition(view); // item position
    int column = position % spanCount; // item column
    if (includeEdge) {
      outRect.left = spacing - column * spacing / spanCount; // spacing - column * ((1f / spanCount) * spacing)
      outRect.right = (column + 1) * spacing / spanCount; // (column + 1) * ((1f / spanCount) * spacing)
      if (position < spanCount) { // top edge
        outRect.top = spacing;
      }
      outRect.bottom = spacing; // item bottom
    } else {
      outRect.left = column * spacing / spanCount; // column * ((1f / spanCount) * spacing)
      outRect.right = spacing - (column + 1) * spacing / spanCount; // spacing - (column + 1) * ((1f /  spanCount) * spacing)
      if (position >= spanCount) {
        outRect.top = spacing; // item top
      }
    }
  }
}

此处不仅对间距进行了处理，而且对spanCount也进行了处理，使用方法：

    int spanCount = 3; // 3 columns
    int spacing = 50; // 50px
    boolean includeEdge = false;
    mRecyclerView.addItemDecoration(new GridSpacingItemDecoration(spanCount, spacing, includeEdge));

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持创新互联。

分享名称：浅谈AndroidRecyclerView间距全适配
转载注明：https://www.cdcxhl.com/article30/psojpo.html

成都网站建设公司_创新互联，为您提供品牌网站设计、定制网站、面包屑导航、小程序开发、网站改版、营销型网站建设

声明：本网站发布的内容（图片、视频和文字）以用户投稿、用户转载内容为主，如果涉及侵权请尽快告知，我们将会在第一时间删除。文章观点不代表本网站立场，如需处理请联系客服。电话：028-86922220；邮箱：631063699@qq.com。内容未经允许不得转载，或转载时需注明来源：创新互联

猜你还喜欢下面的内容