Android本地实现搜索历史记录

本文实例为大家分享了Android本地实现搜索历史记录的具体代码，供大家参考，具体内容如下

一.自定义搜索历史记录

本地实现搜索历史记录有很多种方法，下面不多说了，我们来用SQLite来实现此功能，直接上完整代码：点击下载源码

效果一：

效果二：

1.MainActivity主函数

package com.example.administrator.searchapplication; import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.Editable;import android.text.TextWatcher;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.View;import android.view.inputmethod.EditorInfo;import android.widget.AdapterView;import android.widget.EditText;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast; import java.util.ArrayList;import java.util.List; public class MainActivity extends AppCompatActivity implements View.OnClickListener{  private EditText searchContentEt; private SearchRecordsAdapter recordsAdapter; private View recordsHistoryView; private ListView recordsListLv; private TextView clearAllRecordsTv; private LinearLayout searchRecordsLl;  private List searchRecordsList; private List tempList; private RecordsDao recordsDao; private TextView tv_history;  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); initData(); bindAdapter(); initListener(); } private void initView() {// setHideHeader(); initRecordsView();  searchRecordsLl = (LinearLayout) findViewById(R.id.search_content_show_ll); searchContentEt = (EditText) findViewById(R.id.input_search_content_et); tv_history = (TextView) findViewById(R.id.tv_history);  //添加搜索view searchRecordsLl.addView(recordsHistoryView);  }  //初始化搜索历史记录View private void initRecordsView() { recordsHistoryView = LayoutInflater.from(this).inflate(R.layout.search_lishi, null); //显示历史记录lv recordsListLv = (ListView) recordsHistoryView.findViewById(R.id.search_records_lv); //清除搜索历史记录 clearAllRecordsTv = (TextView) recordsHistoryView.findViewById(R.id.clear_all_records_tv); }   private void initData() { recordsDao = new RecordsDao(this); searchRecordsList = new ArrayList<>(); tempList = new ArrayList<>(); tempList.addAll(recordsDao.getRecordsList());  reversedList(); //第一次进入判断数据库中是否有历史记录，没有则不显示 checkRecordsSize(); }   private void bindAdapter() { recordsAdapter = new SearchRecordsAdapter(this, searchRecordsList); recordsListLv.setAdapter(recordsAdapter); }  private void initListener() { clearAllRecordsTv.setOnClickListener(this); searchContentEt.setOnEditorActionListener(new TextView.OnEditorActionListener() {   @Override  public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {  if (actionId == EditorInfo.IME_ACTION_SEARCH) {   if (searchContentEt.getText().toString().length() > 0) {    String record = searchContentEt.getText().toString();    //判断数据库中是否存在该记录//   if (!recordsDao.isHasRecord(record)) {//    tempList.add(record);//   }   //将搜索记录保存至数据库中   recordsDao.addRecords(record);//   reversedList();//   checkRecordsSize();//   recordsAdapter.notifyDataSetChanged();   Toast.makeText(MainActivity.this, "11",Toast.LENGTH_SHORT).show();   //根据关键词去搜索    } else {   Toast.makeText(MainActivity.this, "搜索内容不能为空",Toast.LENGTH_SHORT).show();   }  }  return false;  } });  //根据输入的信息去模糊搜索 searchContentEt.addTextChangedListener(new TextWatcher() {  @Override  public void beforeTextChanged(CharSequence s, int start, int count, int after) {   }   @Override  public void onTextChanged(CharSequence s, int start, int before, int count) {   }   @Override  public void afterTextChanged(Editable s) {  if (s.toString().trim().length() == 0) {   tv_history.setText("搜索历史");  } else {   tv_history.setText("搜索结果");  }  String tempName = searchContentEt.getText().toString();  tempList.clear();  tempList.addAll(recordsDao.querySimlarRecord(tempName));  reversedList();  checkRecordsSize();  recordsAdapter.notifyDataSetChanged();  } }); //历史记录点击事件 recordsListLv.setOnItemClickListener(new AdapterView.OnItemClickListener() {  @Override  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {  //将获取到的字符串传到搜索结果界面  //点击后搜索对应条目内容//  searchContentEt.setText(searchRecordsList.get(position));  Toast.makeText(MainActivity.this,searchRecordsList.get(position)+"",Toast.LENGTH_SHORT).show();  searchContentEt.setSelection(searchContentEt.length());  } }); }  //当没有匹配的搜索数据的时候不显示历史记录栏 private void checkRecordsSize(){ if(searchRecordsList.size() == 0){  searchRecordsLl.setVisibility(View.GONE); }else{  searchRecordsLl.setVisibility(View.VISIBLE); } }  @Override public void onClick(View v) { switch (v.getId()){  //清空所有历史数据  case R.id.clear_all_records_tv:  tempList.clear();  reversedList();  recordsDao.deleteAllRecords();  recordsAdapter.notifyDataSetChanged();  searchRecordsLl.setVisibility(View.GONE);  searchContentEt.setHint("请输入你要搜索的内容");  break; } }  //颠倒list顺序，用户输入的信息会从上依次往下显示 private void reversedList(){ searchRecordsList.clear(); for(int i = tempList.size() - 1 ; i >= 0 ; i --) {  searchRecordsList.add(tempList.get(i)); } }}

2.SearchRecordsAdapter适配器

package com.example.administrator.searchapplication; /** * Created by Administrator on 2018/2/11. */ import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView; import java.util.List; /** * Created by 05 on 2016/7/27. */public class SearchRecordsAdapter extends BaseAdapter {  private Context context; private List searchRecordsList; private LayoutInflater inflater;  public SearchRecordsAdapter(Context context, List searchRecordsList) { this.context = context; this.searchRecordsList = searchRecordsList; inflater = LayoutInflater.from(context); }  @Override public int getCount() { //设置listView的显示条目数量为5 return searchRecordsList.size() > 5 ? 5 : searchRecordsList.size(); }  @Override public Object getItem(int position) { return searchRecordsList.size() == 0 ? null : searchRecordsList.get(position); }  @Override public long getItemId(int position) { return position; }  @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if(null == convertView){  viewHolder = new ViewHolder();  convertView = inflater.inflate(R.layout.list_item,null);  viewHolder.recordTv = (TextView) convertView.findViewById(R.id.search_content_tv);   convertView.setTag(viewHolder); }else{  viewHolder = (ViewHolder) convertView.getTag(); }  String content = searchRecordsList.get(position); viewHolder.recordTv.setText(content);  return convertView; }  private class ViewHolder { TextView recordTv; }}

3.RecordSQLiteOpenHelper

package com.example.administrator.searchapplication; /** * Created by Administrator on 2018/2/11. */ import android.content.Context;import android.database.sqlite.SQLiteDatabase;import android.database.sqlite.SQLiteOpenHelper; /** * 搜索记录帮助类 * Created by 05 on 2016/7/27. */public class RecordSQLiteOpenHelper extends SQLiteOpenHelper {  private final static String DB_NAME = "temp.db"; private final static int DB_VERSION = 1;  public RecordSQLiteOpenHelper(Context context) { super(context, DB_NAME, null, DB_VERSION); }  @Override public void onCreate(SQLiteDatabase db) { String sqlStr = "CREATE TABLE IF NOT EXISTS records (_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT);"; db.execSQL(sqlStr); }  @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {  }}

4.RecordsDao

package com.example.administrator.searchapplication; /** * Created by Administrator on 2018/2/11. */ import android.content.ContentValues;import android.content.Context;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase; import java.util.ArrayList;import java.util.List; /** * 搜索记录操作类 * Created by 05 on 2016/7/27. */public class RecordsDao { RecordSQLiteOpenHelper recordHelper;  SQLiteDatabase recordsDb;  public RecordsDao(Context context) { recordHelper = new RecordSQLiteOpenHelper(context); }  //添加搜索记录 public void addRecords(String record) {  if (!isHasRecord(record)) {  recordsDb = recordHelper.getReadableDatabase();  ContentValues values = new ContentValues();  values.put("name", record);  //添加  recordsDb.insert("records", null, values);  //关闭  recordsDb.close(); } }  //判断是否含有该搜索记录 public boolean isHasRecord(String record) { boolean isHasRecord = false; recordsDb = recordHelper.getReadableDatabase(); Cursor cursor = recordsDb.query("records", null, null, null, null, null, null); while (cursor.moveToNext()) {  if (record.equals(cursor.getString(cursor.getColumnIndexOrThrow("name")))) {  isHasRecord = true;  } } //关闭数据库 recordsDb.close(); cursor.close(); return isHasRecord; }  //获取全部搜索记录 public List getRecordsList() { List recordsList = new ArrayList<>(); recordsDb = recordHelper.getReadableDatabase(); Cursor cursor = recordsDb.query("records", null, null, null, null, null, null); while (cursor.moveToNext()) {  String name = cursor.getString(cursor.getColumnIndexOrThrow("name"));  recordsList.add(name); } //关闭数据库 recordsDb.close(); cursor.close(); return recordsList; }  //模糊查询 public List querySimlarRecord(String record){ String queryStr = "select * from records where name like '%" + record + "%' order by name "; List similarRecords = new ArrayList<>(); Cursor cursor= recordHelper.getReadableDatabase().rawQuery(queryStr,null);  while (cursor.moveToNext()) {  String name = cursor.getString(cursor.getColumnIndexOrThrow("name"));  similarRecords.add(name); }  cursor.close(); return similarRecords; }  //清空搜索记录 public void deleteAllRecords() { recordsDb = recordHelper.getWritableDatabase(); recordsDb.execSQL("delete from records");  recordsDb.close(); } // 删除 public int delete(int _id) {  SQLiteDatabase db = recordHelper.getWritableDatabase(); int d = db.delete("records", "_id=?", new String[] { _id + "" });  db.close(); return d;  } }

5.主函数布局

6.适配器布局

<?xml version="1.0" encoding="utf-8"?>

7.搜索布局

<?xml version="1.0" encoding="utf-8"?>

ok，demo资源里有

二.仿bilibili搜索框效果(三句代码实现)

1.添加依赖：

apply plugin: 'com.android.application' android { compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } compileSdkVersion 29 buildToolsVersion "29.0.2" defaultConfig { applicationId "com.example.mysgfceshicase" minSdkVersion 15 targetSdkVersion 29 versionCode 1 versionName "1.0" testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" } buildTypes { release {  minifyEnabled false  proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } packagingOptions { //解决编译时com.android.builder.merge.DuplicateRelativeFileException: More than one file was found with OS independent path 'META-INF/rxjava.properties'这个错误 exclude 'META-INF/rxjava.properties' }} dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'androidx.appcompat:appcompat:1.0.2' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'androidx.test.ext:junit:1.1.0' androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' //noinspection GradleCompatible implementation 'com.android.support:recyclerview-v7:26.0.0-beta2' implementation 'com.android.support:cardview' +  '-v7:26.0.0-beta2' testImplementation 'junit:junit:4.12' //仿转转轮播图BAnner implementation 'com.tokiii:reveal-banner:1.0.1' //下拉刷新、上拉加载、二级刷新、淘宝二楼、RefreshLayout、OverScroll，Android智能下拉刷新框架，支持越界回弹、越界拖动， // 具有极强的扩展性，集成了几十种炫酷的Header和 Footer implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.1.0' //1.0.5及以前版本的老用户升级需谨慎，API改动过大 implementation 'com.scwang.smartrefresh:SmartRefreshHeader:1.1.0' //没有使用特殊Header，可以不加这行 //炫酷的輪播圖效果 implementation 'com.github.ulez:dropindicator:0.0.2' //搜索历史记录 implementation 'com.wenwenwen888:searchbox:1.0.1' implementation 'com.jakewharton:butterknife:10.0.0' annotationProcessor 'com.jakewharton:butterknife-compiler:10.0.0' //noinspection GradleCompatible implementation 'com.android.support:design:28.0.0' implementation 'io.reactivex:rxandroid:1.1.0' implementation 'io.reactivex:rxjava:1.1.0'// implementation 'com.trello.rxlifecycle2:rxlifecycle:2.2.1'// implementation 'com.trello.rxlifecycle2:rxlifecycle-android:2.2.1'// implementation 'com.trello.rxlifecycle2:rxlifecycle-components:2.2.1' implementation 'com.trello:rxlifecycle-components:0.6.1' implementation 'com.jakewharton.rxbinding:rxbinding:0.3.0' implementation 'com.jakewharton.rxbinding:rxbinding-appcompat-v7:0.3.0' implementation 'com.jakewharton.rxbinding:rxbinding-design:0.3.0' implementation 'com.github.bumptech.glide:glide:3.7.0' //gradle api ('com.alibaba.android:ultraviewpager:1.0.7.7@aar') { transitive = true } //首先引入gson库 compile 'com.google.code.gson:gson:2.8.1' } //搜索历史记录 implementation 'com.wenwenwen888:searchbox:1.0.1'

2.主要实现：

//第一句 , 实例化: SearchFragment searchFragment = SearchFragment.newInstance(); //第二句 , 设置回调:searchFragment.setOnSearchClickListener(new IOnSearchClickListener() {  @Override  public void OnSearchClick(String keyword) {  //这里处理逻辑  Toast.makeText(ToolBarActivity.this, keyword, Toast.LENGTH_SHORT).show();  } });//第三句 , 显示搜索框:searchFragment.showFragment(getSupportFragmentManager(),SearchFragment.TAG);

3.全部代码：

import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.TextView; import com.example.mysgfceshicase.R;import com.wyt.searchbox.SearchFragment;import com.wyt.searchbox.custom.IOnSearchClickListener; import androidx.appcompat.app.AppCompatActivity;import androidx.appcompat.widget.Toolbar;import butterknife.BindView;import butterknife.ButterKnife; public class SearchActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener, IOnSearchClickListener {  @BindView(R.id.toolbar) Toolbar toolbar; @BindView(R.id.search_info) TextView searchInfo;  private SearchFragment searchFragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_search); ButterKnife.bind(this);  toolbar.setTitle("SearchDialog");//标题 setSupportActionBar(toolbar);  searchFragment = SearchFragment.newInstance();  toolbar.setOnMenuItemClickListener(this);  searchFragment.setOnSearchClickListener(this); }  @Override public boolean onCreateOptionsMenu(Menu menu) { //加载菜单文件 getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) {  case R.id.action_search://点击搜索  searchFragment.showFragment(getSupportFragmentManager(), SearchFragment.TAG);  break; } return true; }  @Override public void OnSearchClick(String keyword) { searchInfo.setText(keyword); }}

<?xml version="1.0" encoding="utf-8"?>

源码：搜索历史记录

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脚本之家。

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