Android搜索框

可直接使用控件 Sercherview+ListView（显示数据）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="15dp"
    android:orientation="vertical"
  >

    <SearchView
        android:id="@+id/search"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:queryHint="请输入搜索内容" />
    <ListView
        android:id="@+id/list"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"/>

</LinearLayout>

代码：

package com.example.viewpager;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SimpleAdapter;

import java.util.ArrayList;

public class LUNBO extends AppCompatActivity {
    
    
private SearchView searchView;
private ListView listView;
private ArrayList<String> mdate=new ArrayList<String>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_lunbo);
        init();
    }

    private void init() {
    
    
        listView=findViewById(R.id.list);
        listView.setVisibility(View.GONE);//设置listview先不可见
        searchView=findViewById(R.id.search);
        mdate.add("aa");
        mdate.add("bb");
        mdate.add("abx");
        mdate.add("ax");
        listView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,mdate));//绑定数据
        listView.setTextFilterEnabled(true);//打开过滤
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    
    //添加搜索框监听
            @Override
            public boolean onQueryTextSubmit(String s) {
    
    
                return false;
            }

            @Override
            public boolean onQueryTextChange(String s) {
    
    


                if(!TextUtils.isEmpty(s)){
    
    
                    listView.setVisibility(View.VISIBLE);//设置当搜索框不为空的时候显示搜索数据
                    listView.setFilterText(s);//添加字符过滤
                }else {
    
    
                    listView.setVisibility(View.GONE);//设置当搜索框为空的时候隐藏LISTVIEW
                    listView.clearTextFilter();//删除字符过滤
                }
                return false;
            }
        });
    }
}