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<String> searchRecordsList;
private List<String> 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<String> searchRecordsList;
private LayoutInflater inflater;
public SearchRecordsAdapter(Context context, List<String> 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<String> getRecordsList() {
List<String> 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<String> querySimlarRecord(String record){
String queryStr = "select * from records where name like '%" record "%' order by name ";
List<String> 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
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="50dp"> <LinearLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1"> <ImageView android:layout_width="30dp" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:padding="5dp" android:src="@mipmap/ic_launcher" /> <EditText android:id="@ id/input_search_content_et" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="请输入你要搜索的内容" android:imeOptions="actionSearch" android:singleLine="true" /> <!-- 以上的singleLine和imeOptions属性代码是将弹出的软键盘的回车键替换成搜索键的关键，当然也可以换成发送键 等等，可以去查一下该属性 --> </LinearLayout> <TextView android:id="@ id/search_content_cancel_tv" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:gravity="center" android:padding="10dp" android:text="取消" android:textSize="18sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:orientation="vertical" android:gravity="center|left" android:layout_height="30dp"> <TextView android:id="@ id/tv_history" android:layout_width="wrap_content" android:layout_marginLeft="20dp" android:text="搜索历史" android:layout_height="wrap_content" /> </LinearLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:id="@ id/search_content_show_ll" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"></LinearLayout> </RelativeLayout> </LinearLayout>
6.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="match_parent" android:layout_height="match_parent"> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="40dp"> <TextView android:id="@ id/search_content_tv" android:layout_width="match_parent" android:layout_height="wrap_content" android:drawableLeft="@mipmap/ic_launcher_round" android:drawablePadding="8dp" android:layout_margin="10dp" android:layout_gravity="center_vertical" /> </LinearLayout> </LinearLayout>
7.搜索布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content"> <ListView android:id="@ id/search_records_lv" android:layout_width="match_parent" android:layout_height="wrap_content"/> <View android:layout_width="match_parent" android:layout_height="0.1dp" android:background="@color/colorAccent"/> <TextView android:background="@color/colorPrimary" android:id="@ id/clear_all_records_tv" android:layout_width="match_parent" android:layout_height="40dp" android:textSize="16sp" android:gravity="center" android:text="清除历史记录"/> <View android:layout_width="match_parent" android:layout_height="0.1dp" android:background="@color/colorAccent"/> </LinearLayout> </LinearLayout>
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"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent"> <androidx.appcompat.widget.Toolbar android:id="@ id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/colorPrimary" app:layout_scrollFlags="scroll|enterAlways" /> <TextView android:id="@ id/search_info" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/toolbar" android:gravity="center" android:text="Hello Android!" android:textSize="20sp" /> </RelativeLayout>
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Devmax。