Android嵌套RecyclerView左右滑动替代自定义view

以前的左右滑动效果采用自定义scrollview或者linearlayout来实现，recyclerview可以很好的做这个功能，一般的需求就是要么一个独立的左右滑动效果，要么在一个列表里的中间部分一个左右滑动效果

而列表里面也容易，只是需要解决一点小问题，个人认为值得一提的就是高度问题，一般的人采用固定死的高度，可是在列表里面展示和机型的不同，固定死的话很难保证美观，动态的高度才能解决问题的所在

首先在一个列表控件布局上添加一个recyclerview控件

<android.support.v7.widget.recyclerview
  android:id="@+id/plan_recycler"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"/>

然后是adapter适配器布局

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="wrap_content"
 android:layout_height="match_parent"
 android:padding="@dimen/dimen_20dp">
 <imageview android:id="@+id/img_icon"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:src="@drawable/bbs_plan_mofa"/>
 <textview android:id="@+id/tv_content"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:layout_margintop="@dimen/dimen_8dp"
  android:textsize="15sp"
  android:textcolor="@color/color_323232"/>
</linearlayout>

接下来写adapter

import android.content.context;
import android.support.v7.widget.recyclerview;
import android.view.layoutinflater;
import android.view.view;
import android.view.viewgroup;
import android.widget.textview;
import com.xulu.loanmanager.r;
import java.util.list;
import butterknife.bindview;
import butterknife.butterknife;
/**
 * created by liuzhen on 2017/6/22.
 */
public class bbsplanadapter extends recyclerview.adapter<bbsplanadapter.myviewholder> {
 private list<string> list;
 private layoutinflater minflater;
 private context context=null;
 private int height;
 private boolean ismeasure = false;
 private callback callback;
 public bbsplanadapter(context context, list<string> list, callback callback) {
  this.context=context;
  this.list = list;
  minflater = layoutinflater.from(context);
  this.callback = callback;
 }
 @override
 public myviewholder oncreateviewholder(viewgroup parent, int viewtype) {
  view view = minflater.inflate(r.layout.item_bbsdetail_plan, parent, false);
  if (!ismeasure) {
   view.measure(view.measurespec.unspecified, view.measurespec.unspecified);
   height = view.getmeasuredheight();
   callback.getheight(height);
  }
  myviewholder holder = new myviewholder(view);
  return holder;
 }
 public int getheight(){
  return height;
 }
 @override
 public void onbindviewholder(myviewholder holder, final int position) {
  holder.itemview.setonclicklistener(new view.onclicklistener() {
   @override
   public void onclick(view v) {
    callback.itemclick(position);
   }
  });
 }
 @override
 public int getitemcount() {
  return 6;
 }
 static class myviewholder extends recyclerview.viewholder{
  @bindview(r.id.tv_content)
  textview tv_content;
  myviewholder(view view){
   super(view);
   butterknife.bind(this,view);
  }
 }
 public interface callback{
  void getheight(int height);
  void itemclick(int position);
 }
}

重点是measure方法，得到测量的高度

接下来就可以直接使用了

private void initscrolllist(){
  final recyclerview planrecycler = (recyclerview) headview.findviewbyid(r.id.plan_recycler);
  linearlayoutmanager linearlayoutmanager = new linearlayoutmanager(bbsdetailactivity.this);
  linearlayoutmanager.setorientation(linearlayoutmanager.horizontal);
  planrecycler.setlayoutmanager(linearlayoutmanager);
  list<string> list = new arraylist<>();
  bbsplanadapter adapter = new bbsplanadapter(bbsdetailactivity.this, list, new bbsplanadapter.callback() {
   @override
   public void getheight(int height) {
    viewgroup.layoutparams params = planrecycler.getlayoutparams();
    params.height = height;
    planrecycler.setlayoutparams(params);
   }
   @override
   public void itemclick(int position) {
    toast.maketext(bbsdetailactivity.this,""+position,toast.length_short).show();
   }
  });
  planrecycler.setadapter(adapter);
 }

很简单，完全替代自定义view，效果如下，如果没有测量这一步可能会出现高度不适合，要么是看不到textview的文字，因为太低了，要么就是太高了，不美观。

以上所述是小编给大家介绍的android嵌套recyclerview左右滑动替代自定义view，希望对大家有所帮助