Android开发中RecyclerView隐藏item的所在区域显示空白的方法

说明：

RecyclerView隐藏当前item时候，由于为了优化性能，只是把内容隐藏，但是高度不会改变，这样就会出现一片空白区域。

解决方法：

手动改变隐藏的item高度为0。

代码：

比如要隐藏下面xml代码item

这里给了一个方法把ll_item这个布局id传入即可

 //防止隐藏item出现空白
 public void setVisibility(boolean isVisible, View itemView) {
  RecyclerView.LayoutParams param = (RecyclerView.LayoutParams) itemView.getLayoutParams();
  if (isVisible) {
param.height = RelativeLayout.LayoutParams.WRAP_CONTENT;// 这里注意使用自己布局的根布局类型
param.width = RelativeLayout.LayoutParams.MATCH_PARENT;// 这里注意使用自己布局的根布局类型
itemView.setVisibility(View.VISIBLE);
  } else {
itemView.setVisibility(View.GONE);
param.height = 0;
param.width = 0;
  }
  itemView.setLayoutParams(param);
 }

完整代码：

package com.mandaotech.ewallet.android.ui.adapter;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.mandaotech.ewallet.R;
import com.mandaotech.ewallet.android.ui.activity.elecaccount.AccountAddrlistQryActivity;
import com.mandaotech.ewallet.android.ui.activity.elecaccount.AccountOccupationActivity;
import com.mandaotech.ewallet.android.ui.activity.elecaccount.bean.AccountOccupationBean;
import com.mandaotech.ewallet.android.ui.activity.elecaccount.bean.AddrlistQryBean;
import com.mandaotech.ewallet.android.ui.activity.elecaccount.bean.AddrlistQryBean.AddlistQry;

import java.io.Serializable;
import java.util.List;

/**
 * 省级市县
 * Created by zst on 2018/7/12.
 */
public abstract class AccountAddrlistQryAdapter extends RecyclerView.Adapter {

 private List list;
 private int selectId = 0;
 private Activity activity;
 private String searchKeyName = "";//搜索关键字
 private String addrLevel;//跳出自动+1，如果进来的是4则关闭返回省级市县对象

 public AccountAddrlistQryAdapter(Activity activity, List list, String addrLevel) {
  this.activity = activity;
  this.list = list;
  this.addrLevel = addrLevel;
 }

 @Override
 public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
  View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_account_addrlist_qry, parent, false);
  return new ViewHolder(view);
 }

 @Override
 public void onBindViewHolder(ViewHolder holder, final int position) {
  holder.tv_column.setText(list.get(position).getAddrName());
  holder.tv_column.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
 //setColumn(list.get(position).getOccupation());

 int addrLevelInt = Integer.parseInt(addrLevel);

 if (addrLevelInt == 4) {//如果是最后一级直接关闭返回
  Intent intent = new Intent();
  Bundle bundle = new Bundle();
  bundle.putSerializable(AccountAddrlistQryActivity.INTENT_RESULT_ADDRLIST_QRY_BEAN, (Serializable) list.get(position));
  intent.putExtras(bundle);
  intent.putExtra(AccountAddrlistQryActivity.INTENT_RESULT_CHECK_NAME, list.get(position).getAddrName());
  activity.setResult(Activity.RESULT_OK, intent);
  activity.finish();
 } else {//如果不是最后一级，向下一级跳转
  setCheckName(list.get(position).getAddrName());

  addrLevelInt = addrLevelInt + 1;

  Intent intent = new Intent(activity, AccountAddrlistQryActivity.class);
  intent.putExtra(AccountAddrlistQryActivity.INTENT_REQUEST_ADDR_CODE, list.get(position).getAddrCode());
  intent.putExtra(AccountAddrlistQryActivity.INTENT_REQUEST_ADDR_LEVEL, addrLevelInt + "");
  activity.startActivityForResult(intent, AccountAddrlistQryActivity.INTENT_REQUEST_CODE);
 }


}
  });

  if (list.get(position).getAddrName().contains(searchKeyName)) {
setVisibility(true, holder.ll_item);
  } else {
setVisibility(false, holder.ll_item);
  }
 }

 @Override
 public int getItemCount() {
  return list.size();
 }

 public static class ViewHolder extends RecyclerView.ViewHolder {
  TextView tv_column;
  LinearLayout ll_item;

  public ViewHolder(View view) {
super(view);
tv_column = (TextView) view.findViewById(R.id.tv_column);
ll_item = (LinearLayout) view.findViewById(R.id.ll_item);
  }
 }

 //防止隐藏item出现空白
 public void setVisibility(boolean isVisible, View itemView) {
  RecyclerView.LayoutParams param = (RecyclerView.LayoutParams) itemView.getLayoutParams();
  if (isVisible) {
param.height = RelativeLayout.LayoutParams.WRAP_CONTENT;// 这里注意使用自己布局的根布局类型
param.width = RelativeLayout.LayoutParams.MATCH_PARENT;// 这里注意使用自己布局的根布局类型
itemView.setVisibility(View.VISIBLE);
  } else {
itemView.setVisibility(View.GONE);
param.height = 0;
param.width = 0;
  }
  itemView.setLayoutParams(param);
 }

 public String getSearchKeyName() {
  return searchKeyName;
 }

 public void setSearchKeyName(String searchKeyName) {
  this.searchKeyName = searchKeyName;
 }

 public abstract void setCheckName(String checkName);
}