其实这部分主要是实现很多逻辑功能顺序，点击搜索出来的内容显示在一个listview中，然后历史记录又显示在另一个listview中，只要设置listview.setVisibility(View.GONE/VISIBLE)，实现切换，就差不多了，以及清除按钮的显示，详细的解释会在代码中呈现。代码比较繁琐，毕竟能力有限，纯粹是根据自己想法实现的逻辑功能，还有写地方不够完美，仅供参考。
首先是主界面SearchActivity类：
<pre name="code" class="java">package com.example.activity;import java.security.PublicKey;import java.util.ArrayList;import java.util.List;import com.example.adapter.SearchHistoryAdapter;import com.example.adapter.SearchShowLvAdapter;import com.example.db.HistoryHelper;import com.example.domain.Contance;import com.example.domain.ContanceKey;import com.example.domain.HistoryShowBean;import com.example.domain.ImportContance;import com.example.domain.JingdianName;import com.example.domain.SearchShowBean;import com.example.utils.SearchClearEditText;import android.R.integer;import android.app.Activity;import android.content.Intent;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.KeyEvent;import android.view.View;import android.view.Window;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Button;import android.widget.ImageButton;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class SearchActivity extends Activity implements OnClickListener,OnItemClickListener {private ImageButton ib_back_normal; // 搜索框左侧返回按钮private TextView tv_search; // 搜索框右边的搜索字样SearchClearEditText clear_et;private ListView lv_search_xianshi, lv_search_history;private Button clear_search_history_btn;// 初始化数据库打开器HistoryHelper helper;private SearchHistoryAdapter his_adapter;private List<SearchShowBean> sea_data;private List<HistoryShowBean> his_data;static List<String> list = new ArrayList<String>();private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 1:// 点击清除记录按钮，刷新界面his_adapter.refresh(queryHistoryData());break;default:break;}};};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// 设置无标题，使用自己的布局requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.clear_et_activity);init();}/** 初始化组件*/private void init() {ib_back_normal = (ImageButton) findViewById(R.id.ib_back_normal);tv_search = (TextView) findViewById(R.id.tv_search);clear_et = (SearchClearEditText) findViewById(R.id.et_clear);clear_search_history_btn = (Button) findViewById(R.id.clear_search_history_btn);lv_search_xianshi = (ListView) findViewById(R.id.search_xianshi_lv);lv_search_history = (ListView) findViewById(R.id.search_history_lv);his_data = queryHistoryData();his_adapter = new SearchHistoryAdapter(his_data, this);lv_search_history.setAdapter(his_adapter);ib_back_normal.setOnClickListener(this);tv_search.setOnClickListener(this);clear_search_history_btn.setOnClickListener(this);lv_search_history.setOnItemClickListener(this);lv_search_xianshi.setOnItemClickListener(this);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.ib_back_normal:Intent intent = new Intent(SearchActivity.this, MainActivity.class);startActivity(intent);SearchActivity.this.finish(); // 结束当前界面// lv_search_xianshi.setVisibility(View.GONE);break;case R.id.tv_search: // 点击搜索按钮/** 点击搜索按钮先清空，是因为数据使用list集合保存的，如果搜索一个景点出来数据后，* 直接搜索另一个，就会叠加，所以先清空，这样每次显示的都是最新的*/list.removeAll(list);// 点击搜索按钮，使得显示搜索结果的listview显示出来lv_search_xianshi.setVisibility(View.VISIBLE);lv_search_history.setVisibility(View.GONE);clear_search_history_btn.setVisibility(View.GONE);String search = clear_et.getText().toString().trim();int count = 0;for (int i = 0; i < JingdianName.names.length; i++) {if (JingdianName.names[i].contains(search) == true) {list.add(JingdianName.names[i]);count++;}}if (count == 0) { // 如果一个也没有查到，就显示没有景点list.removeAll(list); // 清空集合数据，重新查询getData(list, lv_search_xianshi);Toast.makeText(getApplicationContext(), "没有该景点",Toast.LENGTH_SHORT).show();} else { // 有数据就显示getData(list, lv_search_xianshi);}// 插入数据库数据insertHistory(search);break;case R.id.clear_search_history_btn: // 点击清除历史记录按钮deleteHistory();break;default:break;}}/** 删除历史记录*/private void deleteHistory() {helper = new HistoryHelper(getApplicationContext());SQLiteDatabase db = helper.getWritableDatabase();// 删除表。db.execSQL("delete from " + Contance.HISTORY_TABLENAME);new Thread(new Runnable() {@Overridepublic void run() {// 此处handler发送一个message，用来更新uiMessage msg = new Message();msg.what = 1;handler.sendMessage(msg);}}).start();// his_adapter.refresh(queryHistoryData());db.close();}/** 插入历史记录，点击按钮，获得edittext的值，写到数据库*/private void insertHistory(String search) {helper = new HistoryHelper(getApplicationContext());// 插入数据库SQLiteDatabase db = helper.getWritableDatabase();Log.i("create", "数据库表history创建成功");int count = 0;// 查询数据库，判断edittext的内容是否已经存在，如果存在了，就不写了，如果不存在，就插入数据库// 取回查询存放history表的h_name列的list集合List<String> list = queryHistorySql();for (int i = 0; i < list.size(); i++) {// 获取搜索框的输入内容，和数据已经存在的记录比对，如果有一样的，就count增加；if (list.get(i).equals(search)) {count++;}}// 如果count == 0，说明没有重复的数据，就可以插入数据库history表中if (count == 0) {db.execSQL("insert into " + Contance.HISTORY_TABLENAME+ " values(?,?)", new Object[] { null, search });Log.i("create", "数据库表history数据插入成功");} else {// Toast.makeText(getApplicationContext(), "已存在",// Toast.LENGTH_SHORT)// .show();}db.close();}/** 查询数据库的h_name一列，然后放到list集合中，用于判断是否插入数据*/private List<String> queryHistorySql() {helper = new HistoryHelper(getApplicationContext());List<String> list = new ArrayList<String>();SQLiteDatabase db = helper.getReadableDatabase();Cursor cursor = db.rawQuery("select * from "+ Contance.HISTORY_TABLENAME, null);cursor.moveToFirst();while (!cursor.isAfterLast()) {// 查询数据库，取出h_name这一列，然后全部放到list集合中，在前面调用此方法的时候，用来判断String name = cursor.getString(cursor.getColumnIndex("h_name"));list.add(name);cursor.moveToNext();}db.close();// 返回一个list集合return list;}/** 点击搜索按钮后，查询出来的结果*/private void getData(List<String> list, ListView listView) {sea_data = new ArrayList<SearchShowBean>();for (int i = 0; i < list.size(); i++) {SearchShowBean bean = new SearchShowBean();bean.setJingdian(list.get(i));bean.setImage(getResources().getDrawable(R.drawable.umeng_socialize_search_icon));sea_data.add(bean);}listView.setAdapter(new SearchShowLvAdapter(this, sea_data));}// 将每一行的数据封装成一个HistoryShowBean对象，然后放到his_list中private List<HistoryShowBean> queryHistoryData() {helper = new HistoryHelper(getApplicationContext());List<HistoryShowBean> his_list = new ArrayList<HistoryShowBean>();SQLiteDatabase db = helper.getReadableDatabase();Cursor his_c = db.rawQuery("select * from "+ Contance.HISTORY_TABLENAME, null);his_c.moveToFirst();while (!his_c.isAfterLast()) {int h_id = his_c.getInt(his_c.getColumnIndex("_id"));String h_name = his_c.getString(his_c.getColumnIndex("h_name"));// 用一个HistoryShowBean类来封装得到的数据final HistoryShowBean his_bean = new HistoryShowBean();his_bean.setJingdian(h_name);his_bean.setImage(getResources().getDrawable(R.drawable.history_icon));his_list.add(his_bean);his_c.moveToNext();}if (his_list.size() == 0) {clear_search_history_btn.setVisibility(View.GONE);}db.close();return his_list;}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {// 按下的如果是BACK，同时没有重复Intent intent = new Intent(SearchActivity.this, MainActivity.class);startActivity(intent);SearchActivity.this.finish();// 这里不需要执行父类的点击事件，所以直接returnreturn true;}// 继续执行父类的其他点击事件return super.onKeyDown(keyCode, event);}@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position,long id) {switch (parent.getId()) { // 获得listview的idcase R.id.search_xianshi_lv: // 显示listview// 获得当前点击的itemview = lv_search_xianshi.getChildAt(position);// 获得item中的textview控件，并初始化TextView tv = (TextView) view.findViewById(R.id.search_xianshi_tv);// 获得textview的值String str = tv.getText().toString().trim();// 进行数据库查询并且跳转listViewJump(str);break;case R.id.search_history_lv:view = lv_search_history.getChildAt(position);TextView tv1 = (TextView) view.findViewById(R.id.search_history_tv);String str1 = tv1.getText().toString().trim();String string = null;// 之前已经把数据库的列“mingcheng”的值已经放到了一个数组中// 判断点击的item中的textview的值在mingcheng中是否存在，如果存在，就把那个值给了数据库查询Log.i("searchAcitivity", "11111");// Boolean boolean1 = null;int count1 = 0;for (int i = 0; i < JingdianName.names.length; i++) {Log.i("searchAcitivity", "22222");if (JingdianName.names[i].equals(str1)) {Log.i("searchAcitivity", "33333");string = JingdianName.names[i];// 方法放在for循环外面会有问题listViewJump(string);Log.i("searchAcitivity", "44444");// boolean1 = true;count1++;break;}}if (count1 == 0) {Log.i("searchAcitivity", "88888");Toast.makeText(getApplicationContext(), "没有该景点",Toast.LENGTH_SHORT).show();}Log.i("searchAcitivity", "99999");break;default:break;}}private void listViewJump(String str) {String sql = "select * from jingdian where mingcheng = '" + str + "'";Cursor c = Contance.SQLITE.rawQuery(sql, null);c.moveToFirst();while (!c.isAfterLast()) {ImportContance.MINGCHENG = c.getString(c.getColumnIndex("mingcheng"));ImportContance.JIESHAO = c.getString(c.getColumnIndex("jieshao"));ImportContance.LEIXING = c.getString(c.getColumnIndex("leixing"));ImportContance.JIJIE = c.getString(c.getColumnIndex("jijie"));ImportContance.JIANYI = c.getString(c.getColumnIndex("jianyi"));ImportContance.MENPIAO = c.getString(c.getColumnIndex("menpiao"));ImportContance.SHIJIAN = c.getString(c.getColumnIndex("shijian"));ImportContance.DIZHI = c.getString(c.getColumnIndex("dizhi"));c.moveToNext();}c.close();Intent intent = new Intent(SearchActivity.this, SingleActivity.class);intent.putExtra(ContanceKey.KEY_MINGCHENG, ImportContance.MINGCHENG);intent.putExtra(ContanceKey.KEY_JIESHAO, ImportContance.JIESHAO);intent.putExtra(ContanceKey.KEY_LEIXING, ImportContance.LEIXING);intent.putExtra(ContanceKey.KEY_JIJIE, ImportContance.JIJIE);intent.putExtra(ContanceKey.KEY_JIANYI, ImportContance.JIANYI);intent.putExtra(ContanceKey.KEY_MENPIAO, ImportContance.MENPIAO);intent.putExtra(ContanceKey.KEY_SHIJIAN, ImportContance.SHIJIAN);intent.putExtra(ContanceKey.KEY_DIZHI, ImportContance.DIZHI);startActivity(intent);SearchActivity.this.finish();}}
下来就是主界面的布局文件：
<LinearLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><LinearLayoutandroid:id="@+id/layout_clear_et"android:layout_width="fill_parent"android:layout_height="44dp"android:background="@drawable/nav_bg"android:orientation="horizontal" ><ImageButtonandroid:id="@+id/ib_back_normal"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical|left"android:background="@drawable/search_et_back" /><com.example.utils.SearchClearEditTextandroid:id="@+id/et_clear"android:layout_width="wrap_content"android:layout_height="32dp"android:layout_gravity="center_vertical"android:layout_weight="0.91"android:background="@drawable/et_search_clear_attr"android:drawableLeft="@drawable/umeng_socialize_search_icon"android:drawableRight="@drawable/search_clear"android:ems="10"android:focusable="true"android:focusableInTouchMode="true"android:hint="请输入景点"android:paddingLeft="5dp"android:paddingRight="3dp"android:singleLine="true" /><TextViewandroid:id="@+id/tv_search"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:clickable="true"android:padding="5dp"android:text="搜索"android:textColor="#FFFFFF"android:textSize="18dp" /></LinearLayout><FrameLayoutandroid:id="@+id/search_framelayout"android:layout_width="wrap_content"android:layout_height="wrap_content" ><ListViewandroid:id="@+id/search_history_lv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:visibility="visible" ></ListView><ListViewandroid:id="@+id/search_xianshi_lv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:visibility="gone" ></ListView></FrameLayout><Buttonandroid:id="@+id/clear_search_history_btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:drawableLeft="@drawable/delete_history_icon"android:text="清除历史记录"android:visibility="visible" ></Button></LinearLayout>
历史记录显示的listview的适配器adapter类：
public class SearchHistoryAdapter extends BaseAdapter {private Context mContext;private List<HistoryShowBean> mdata;public SearchHistoryAdapter(List<HistoryShowBean> data, Context context) {this.mContext = context;this.mdata = data;}// 刷新适配器,更新数据public void refresh(List<HistoryShowBean> data) {this.mdata = data;notifyDataSetChanged();}@Overridepublic int getCount() {return mdata.size();}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null) {convertView = View.inflate(mContext,R.layout.search_history_lv_item, null);holder = new ViewHolder();holder.textView = (TextView) convertView.findViewById(R.id.search_history_tv);holder.imageView = (ImageView) convertView.findViewById(R.id.search_history_iv);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}HistoryShowBean bean = mdata.get(position);holder.textView.setText(bean.getJingdian());holder.imageView.setImageDrawable(bean.getImage());return convertView;}private static class ViewHolder {ImageView imageView;TextView textView;}}
点击搜索按钮当前显示的listview的适配器adapter类：
public class SearchShowLvAdapter extends BaseAdapter {private Context mContext;private List<SearchShowBean> mdata;public SearchShowLvAdapter(Context context, List<SearchShowBean> data) {this.mContext = context;this.mdata = data;}@Overridepublic int getCount() {return mdata.size();}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if (convertView == null) {// 如果视图等于null，就给个布局convertView = View.inflate(mContext,R.layout.search_xianshi_lv_item, null);// 初始化hodlerholder = new ViewHolder();// 每项的视图布局是一样的holder.textView = (TextView) convertView.findViewById(R.id.search_xianshi_tv);holder.imageView = (ImageView) convertView.findViewById(R.id.search_xianshi_iv);// 给View添加数据,然后用getTag()取出来convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}SearchShowBean bean = mdata.get(position);holder.textView.setText(bean.getJingdian());holder.imageView.setImageDrawable(bean.getImage());return convertView;}/** 临时的储存器*/private static class ViewHolder {TextView textView;ImageView imageView;}}
对应的两个javabean类：
public class HistoryShowBean {private int _id;private String jingdian;private Drawable image;public int get_id() {return _id;}public void set_id(int _id) {this._id = _id;}public Drawable getImage() {return image;}public void setImage(Drawable image) {this.image = image;}public String getJingdian() {return jingdian;}public void setJingdian(String jingdian) {this.jingdian = jingdian;}}
public class SearchShowBean {private String jingdian;private Drawable image;public Drawable getImage() {return image;}public void setImage(Drawable image) {this.image = image;}public String getJingdian() {return jingdian;}public void setJingdian(String jingdian) {this.jingdian = jingdian;}}
以及数据建表的helper类：
public class HistoryHelper extends SQLiteOpenHelper {private static final int DB_VERSION = 1;public HistoryHelper(Context context) {super(context, Contance.DB_NAME, null, DB_VERSION);}@Overridepublic void onCreate(SQLiteDatabase db) {db.execSQL(Contance.CREAT_HISTORY);}@Overridepublic void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}}
大致就是这些，下面是原码
项目原码
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