自定义搜索功能

其他 2018-05-30 19:17:11 阅读次数: 0

演示

这里写图片描述

源码下载

代码：

SearchActivity.java

package com.bzu.gxs.search.activity;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.bzu.gxs.search.R;
import com.bzu.gxs.search.adapter.SearchAdapter;
import com.bzu.gxs.search.bean.SearchBean;
import com.bzu.gxs.search.widget.SearchView;

import java.util.ArrayList;
import java.util.List;

/**
 * 搜索
 * Created by Gxs on 2016/5/6.
 */
public class SearchActivity extends Activity implements SearchView.SearchViewListener{

    /**
     * 搜索结果列表view
     */
    private ListView lvResults;

    /**
     * 搜索view
     */
    private SearchView searchView;

    /**
     * 热搜框列表adapter
     */
    private ArrayAdapter<String> hintAdapter;

    /**
     * 自动补全列表adapter
     */
    private ArrayAdapter<String> autoCompleteAdapter;

    /**
     * 搜索结果列表adapter
     */
    private SearchAdapter resultAdapter;

    private List<SearchBean> dbData;

    /**
     * 热搜版数据
     */
    private List<String> hintData;

    /**
     * 搜索过程中自动补全数据
     */
    private List<String> autoCompleteData;

    /**
     * 搜索结果的数据
     */
    private List<SearchBean> resultData;

    /**
     * 默认提示框显示项的个数
     */
    private static int DEFAULT_HINT_SIZE = 4;

    /**
     * 提示框显示项的个数
     */
    private static int hintSize = DEFAULT_HINT_SIZE;

    /**
     * 设置提示框显示项的个数
     *
     * @param hintSize 提示框显示个数
     */
    public static void setHintSize(int hintSize) {
        SearchActivity.hintSize = hintSize;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initData();
        initViews();
    }

    /**
     * 初始化视图
     */
    private void initViews() {
        lvResults = (ListView) findViewById(R.id.main_lv_search_results);
        searchView = (SearchView) findViewById(R.id.main_search_layout);
        //设置监听
        searchView.setSearchViewListener(this);
        //设置adapter
        searchView.setTipsHintAdapter(hintAdapter);
        searchView.setAutoCompleteAdapter(autoCompleteAdapter);

        lvResults.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                Toast.makeText(SearchActivity.this, position + "", Toast.LENGTH_SHORT).show();
            }
        });
    }

    /**
     * 初始化数据
     */
    private void initData() {
        //从数据库获取数据
        getDbData();
        //初始化热搜版数据
        getHintData();
        //初始化自动补全数据
        getAutoCompleteData(null);
        //初始化搜索结果数据
        getResultData(null);
    }

    /**
     * 获取db 数据
     */
    private void getDbData() {
        int size = 100;
        dbData = new ArrayList<>(size);
        for (int i = 0; i < size; i++) {
            dbData.add(new SearchBean(R.mipmap.ic_launcher, "Andrion Stuidy 起风了，" + (i + 1), "唯有努力才能生存！", i * 20 + 2 + ""));
        }
    }

    /**
     * 获取热搜版data 和adapter
     */
    private void getHintData() {
        hintData = new ArrayList<>(hintSize);
        for (int i = 1; i <= hintSize; i++) {
            hintData.add("Andrion Stuidy 起风了");
        }
        hintAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, hintData);
    }

    /**
     * 获取自动补全data 和adapter
     */
    private void getAutoCompleteData(String text) {
        if (autoCompleteData == null) {
            //初始化
            autoCompleteData = new ArrayList<>(hintSize);
        } else {
            // 根据text 获取auto data
            autoCompleteData.clear();
            for (int i = 0, count = 0; i < dbData.size()
                    && count < hintSize; i++) {
                if (dbData.get(i).getTitle().contains(text.trim())) {
                    autoCompleteData.add(dbData.get(i).getTitle());
                    count++;
                }
            }
        }
        if (autoCompleteAdapter == null) {
            autoCompleteAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, autoCompleteData);
        } else {
            autoCompleteAdapter.notifyDataSetChanged();
        }
    }

    /**
     * 获取搜索结果data和adapter
     */
    private void getResultData(String text) {
        if (resultData == null) {
            // 初始化
            resultData = new ArrayList<>();
        } else {
            resultData.clear();
            for (int i = 0; i < dbData.size(); i++) {
                if (dbData.get(i).getTitle().contains(text.trim())) {
                    resultData.add(dbData.get(i));
                }
            }
        }
        if (resultAdapter == null) {
            resultAdapter = new SearchAdapter(this, resultData, R.layout.item_search);
        } else {
            resultAdapter.notifyDataSetChanged();
        }
    }

    //当搜索框 文本改变时 触发的回调 ,更新自动补全数据
    @Override
    public void onRefreshAutoComplete(String text) {
        //更新数据
        getAutoCompleteData(text);
    }

    //点击搜索键时edit text触发的回调
    @Override
    public void onSearch(String text) {
        //更新result数据
        getResultData(text);
        lvResults.setVisibility(View.VISIBLE);
        //第一次获取结果 还未配置适配器
        if (lvResults.getAdapter() == null) {
            //获取搜索数据 设置适配器
            lvResults.setAdapter(resultAdapter);
        } else {
            //更新搜索数据
            resultAdapter.notifyDataSetChanged();
        }
    }
}

SearchBean.java

package com.bzu.gxs.search.bean;

/**
 * Created by GXS on 2016/5/9.
 */
public class SearchBean {

    private int iconId;
    private String title;
    private String content;
    private String comments;

    public SearchBean(int iconId,String title,String content,String comments){
        this.iconId=iconId;
        this.title=title;
        this.content=content;
        this.comments=comments;
    }

    public int getIconId() {
        return iconId;
    }

    public void setIconId(int iconId) {
        this.iconId = iconId;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle() {
        return title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getComments() {
        return comments;
    }

    public void setComments(String comments) {
        this.comments = comments;
    }
}

SearchAdapter.java

package com.bzu.gxs.search.adapter;

import android.content.Context;

import com.bzu.gxs.search.bean.SearchBean;

import java.util.List;

import com.bzu.gxs.search.R;

/**
 * Created by GXS on 2016/5/9.
 */
public class SearchAdapter extends CommonAdapter<SearchBean> {

    public SearchAdapter(Context context, List<SearchBean> data, int layoutId) {
        super(context, data, layoutId);
    }

    @Override
    public void convert(ViewHolder holder, int position) {

        holder.setImageResource(R.id.item_search_iv_icon,mData.get(position).getIconId())
                .setText(R.id.item_search_tv_title,mData.get(position).getTitle())
                .setText(R.id.item_search_tv_content,mData.get(position).getContent())
                .setText(R.id.item_search_tv_comments,mData.get(position).getComments());
    }
}

CommonAdapter.java

package com.bzu.gxs.search.adapter;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import java.util.List;

/**
 * Created by GXS on 2016/5/9.
 */
public abstract class CommonAdapter<T> extends BaseAdapter {

    protected Context mContext;
    protected List<T> mData;
    protected int mLayoutId;

    public CommonAdapter(Context context,List<T> data,int layoutId){
        mContext = context;
        mData = data;
        mLayoutId = layoutId;
    }


    @Override
    public int getCount() {
        return mData.size();
    }

    @Override
    public Object getItem(int position) {
        return mData.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder = ViewHolder.getHolder(mContext,convertView,mLayoutId,parent,position);
        convert(holder,position);
        return holder.getConvertView();
    }

    /**
     * get holder convert
     */
    public abstract void convert(ViewHolder holder,int position);
}

ViewHolder.java

package com.bzu.gxs.search.adapter;

import android.content.Context;
import android.graphics.Bitmap;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * Created by GXS on 2016/5/9.
 */
public class ViewHolder {

    private SparseArray<View> mViews;
    private Context mContext;
    private View mConvertView;
    private int mPosition;

    /**
     * 初始化 holder
     */
    public ViewHolder(Context context, int layoutId, ViewGroup parent, int position) {
        mConvertView = LayoutInflater.from(context).inflate(layoutId,parent,false);
        mViews = new SparseArray<>();
        mPosition = position;
        mConvertView.setTag(this);
    }

    /**
     *  获取 viewHolder
     */
    public static ViewHolder getHolder(Context context, View convertView,
                                       int layoutId, ViewGroup parent, int position) {
        if(convertView == null){
            return new ViewHolder(context,layoutId,parent,position);
        }else{
            ViewHolder holder = (ViewHolder)convertView.getTag();
            holder.mPosition = position;
            return holder;
        }
    }

    public View getConvertView(){
        return mConvertView;
    }

    /**
     * 获取 view
     */
    public <T extends View> T getView(int viewId){
        View view = mViews.get(viewId);
        if(view == null){
            view = mConvertView.findViewById(viewId);
            mViews.put(viewId,view);
        }
        return (T)view;
    }

    /**
     * 设置 text
     */
    public ViewHolder setText(int viewId, String text){
        TextView tv = getView(viewId);
        tv.setText(text);
        return this;
    }

    /**
     *  设置图片资源
     */
    public ViewHolder setImageResource(int viewId,int resId){
        ImageView iv = getView(viewId);
        iv.setImageResource(resId);
        return this;
    }

    /**
     *  设置图片 bitmap
     */
    public ViewHolder setImageBitmap(int viewId,Bitmap bitmap){
        ImageView iv = getView(viewId);
        iv.setImageBitmap(bitmap);
        return this;
    }
}

SearchView.java

package com.bzu.gxs.search.widget;

import android.app.Activity;
import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import com.bzu.gxs.search.R;


public class SearchView extends LinearLayout implements View.OnClickListener {

    /**
     * 输入框
     */
    private EditText etInput;

    /**
     * 删除键
     */
    private ImageView ivDelete;

    /**
     * 返回按钮
     */
    private Button btnBack;

    /**
     * 上下文对象
     */
    private Context mContext;

    /**
     * 弹出列表
     */
    private ListView lvTips;

    /**
     * 提示adapter （推荐adapter）
     */
    private ArrayAdapter<String> mHintAdapter;

    /**
     * 自动补全adapter 只显示名字
     */
    private ArrayAdapter<String> mAutoCompleteAdapter;

    /**
     * 搜索回调接口
     */
    private SearchViewListener mListener;

    /**
     * 设置搜索回调接口
     *
     * @param listener 监听者
     */
    public void setSearchViewListener(SearchViewListener listener) {
        mListener = listener;
    }

    public SearchView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        LayoutInflater.from(context).inflate(R.layout.activity_search, this);
        initViews();
    }

    private void initViews() {
        etInput = (EditText) findViewById(R.id.search_et_input);
        ivDelete = (ImageView) findViewById(R.id.search_iv_delete);
        btnBack = (Button) findViewById(R.id.search_btn_back);
        lvTips = (ListView) findViewById(R.id.search_lv_tips);

        lvTips.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                //set edit text
                String text = lvTips.getAdapter().getItem(i).toString();
                etInput.setText(text);
                etInput.setSelection(text.length());
                //hint list view gone and result list view show
                lvTips.setVisibility(View.GONE);
                notifyStartSearching(text);
            }
        });

        ivDelete.setOnClickListener(this);
        btnBack.setOnClickListener(this);

        etInput.addTextChangedListener(new EditChangedListener());
        etInput.setOnClickListener(this);
        etInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
                if (actionId == EditorInfo.IME_ACTION_SEARCH) {
                    lvTips.setVisibility(GONE);
                    notifyStartSearching(etInput.getText().toString());
                }
                return true;
            }
        });
    }

    /**
     * 通知监听者 进行搜索操作
     * @param text
     */
    private void notifyStartSearching(String text){
        if (mListener != null) {
            mListener.onSearch(etInput.getText().toString());
        }
        //隐藏软键盘
        InputMethodManager imm = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

    /**
     * 设置热搜版提示 adapter
     */
    public void setTipsHintAdapter(ArrayAdapter<String> adapter) {
        this.mHintAdapter = adapter;
        if (lvTips.getAdapter() == null) {
            lvTips.setAdapter(mHintAdapter);
        }
    }

    /**
     * 设置自动补全adapter
     */
    public void setAutoCompleteAdapter(ArrayAdapter<String> adapter) {
        this.mAutoCompleteAdapter = adapter;
    }

    private class EditChangedListener implements TextWatcher {
        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {

        }

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
            if (!"".equals(charSequence.toString())) {
                ivDelete.setVisibility(VISIBLE);
                lvTips.setVisibility(VISIBLE);
                if (mAutoCompleteAdapter != null && lvTips.getAdapter() != mAutoCompleteAdapter) {
                    lvTips.setAdapter(mAutoCompleteAdapter);
                }
                //更新autoComplete数据
                if (mListener != null) {
                    mListener.onRefreshAutoComplete(charSequence + "");
                }
            } else {
                ivDelete.setVisibility(GONE);
                if (mHintAdapter != null) {
                    lvTips.setAdapter(mHintAdapter);
                }
                lvTips.setVisibility(GONE);
            }

        }

        @Override
        public void afterTextChanged(Editable editable) {
        }
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.search_et_input:
                lvTips.setVisibility(VISIBLE);
                break;
            case R.id.search_iv_delete:
                etInput.setText("");
                ivDelete.setVisibility(GONE);
                break;
            case R.id.search_btn_back:
                ((Activity) mContext).finish();
                break;
        }
    }

    /**
     * search view回调方法
     */
    public interface SearchViewListener {

        /**
         * 更新自动补全内容
         *
         * @param text 传入补全后的文本
         */
        void onRefreshAutoComplete(String text);

        /**
         * 开始搜索
         *
         * @param text 传入输入框的文本
         */
        void onSearch(String text);

    }

}

布局文件：

activity_main.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffffff"
    tools:context=".activity.SearchActivity"
    android:orientation="vertical">

    <com.bzu.gxs.search.widget.SearchView
        android:id="@+id/main_search_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true">
    </com.bzu.gxs.search.widget.SearchView>



    <ListView
        android:id="@+id/main_lv_search_results"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    </ListView>

</LinearLayout>

activity_search.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#ffffff"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <LinearLayout
        android:background="#E5E5E5"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <FrameLayout
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical">

            <EditText
                android:id="@+id/search_et_input"
                android:layout_gravity="center_vertical"
                android:layout_margin="10dp"
                android:drawableLeft="@drawable/ic_search"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/search_edittext_shape"
                android:textSize="16sp"
                android:imeOptions="actionSearch"
                android:inputType="text"
                android:hint="请输入搜索的内容"/>

            <ImageView
                android:visibility="gone"
                android:layout_marginRight="20dp"
                android:src="@drawable/ic_delete"
                android:id="@+id/search_iv_delete"
                android:layout_gravity="right|center_vertical"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        </FrameLayout>

        <Button
            android:id="@+id/search_btn_back"
            android:layout_marginRight="10dp"
            android:paddingLeft="5dp"
            android:paddingRight="10dp"
            android:layout_gravity="center_vertical"
            android:text="取消"
            android:textColor="#EA5421"
            android:textSize="15sp"
            android:background="@null"
            android:layout_height="wrap_content"
            android:layout_width="50dp" />
    </LinearLayout>

    <ListView
        android:visibility="gone"
        android:id="@+id/search_lv_tips"
        android:background="#ffffff"
        android:layout_marginBottom="10dp"
        android:layout_width="match_parent"
        android:layout_height="600dp">
    </ListView>
</LinearLayout>

item_search.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#ffffff"
    android:layout_margin="10dp"
    android:layout_marginTop="5dp">
    <ImageView
        android:src="@mipmap/ic_launcher"
        android:id="@+id/item_search_iv_icon"
        android:layout_marginLeft="20dp"
        android:layout_centerVertical="true"
        android:layout_width="60dp"
        android:layout_height="60dp"/>
    <TextView
        android:id="@+id/item_search_tv_title"
        android:layout_marginTop="15dp"
        android:layout_marginLeft="10dp"
        android:layout_toRightOf="@id/item_search_iv_icon"
        android:text="Title"
        android:textSize="15sp"
        android:textColor="#000"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/item_search_tv_content"
        android:layout_marginLeft="10dp"
        android:layout_marginBottom="10dp"
        android:layout_marginRight="50dp"
        android:layout_toRightOf="@id/item_search_iv_icon"
        android:layout_below="@id/item_search_tv_title"
        android:text="content"
        android:textSize="14sp"
        android:textColor="#777"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/item_search_tv_comments"
        android:layout_marginRight="20dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="Title"
        android:singleLine="true"
        android:textSize="14sp"
        android:textColor="#777"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</RelativeLayout>

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