Android EditText达到SearchView的效果

先来看下效果图：

就不啰嗦了，直接上代码：

package com.example.bao.mysearchview;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.ListView;

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

public class MainActivity extends AppCompatActivity {
    private EditText editText;
    private ListView listView;
    private List<String> mDatas;
    private List<String> mCopyDatas;
    private MyAdapter myAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText= (EditText) findViewById(R.id.etSearch);
        listView= (ListView) findViewById(R.id.list_view);
        mDatas=new ArrayList<>();
        mCopyDatas=new ArrayList<>();

        setDatas();

        listView.setAdapter(myAdapter=new MyAdapter(this, mDatas));

        editText.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) {
                String searchText = s.toString();
                mDatas.clear();
                if(TextUtils.isEmpty(searchText)){
                    mDatas.addAll(mCopyDatas);
                }else {
                    for (String str : mCopyDatas) {
                        if(str.contains(searchText)){
                            mDatas.add(str);
                        }
                    }
                }
                myAdapter.notifyDataSetChanged();
            }
        });
    }

    private void setDatas() {
        for (int i = 0; i < 5; i++) {
            mCopyDatas.add("11"+i);
        }
        for (int i = 0; i < 5; i++) {
            mCopyDatas.add("22"+i);
        }
        for (int i = 0; i < 5; i++) {
            mCopyDatas.add("33"+i);
        }
        for (int i = 0; i < 5; i++) {
            mCopyDatas.add("12"+i);
        }
        for (int i = 0; i < 5; i++) {
            mCopyDatas.add("13"+i);
        }

        mDatas.addAll(mCopyDatas);

    }

    private class MyAdapter extends CommonAdapter<String>{
        public MyAdapter(Context context, List data) {
            super(context, data, R.layout.item);
        }

        @Override
        protected void convert(ViewHolder viewHolder, String item) {
            viewHolder.setText(R.id.id_tv_title,item);
        }
    }
}

item布局：

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/id_tv_title"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:background="#aa111111"
    android:gravity="center_vertical"
    android:paddingLeft="15dp"
    android:textColor="#ffffff"
    android:text="hello"
    android:textSize="20sp"
    android:textStyle="bold" >

</TextView>

可以跟着敲一遍，我这里就直接贴出来了，就两个类：

ViewHolder:

package com.example.bao.mysearchview;

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 bao on 2017/5/31.
 */

public class ViewHolder {
    private View mConvertView;
    private SparseArray<View> mViews;
    private int mPosition;

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

    /**
     * 拿到一个Viewholder对象
     * @param context
     * @param convertView
     * @param parent
     * @param layoutId
     * @return
     */
    public static ViewHolder get(Context context,View convertView,ViewGroup parent, int layoutId,int position){
        if(convertView==null){
            return new ViewHolder(context,parent,layoutId,position);
        }
        return (ViewHolder) convertView.getTag();
    }

    /**
     * 通过ID获取控件对象，如果没有则加入到views
     * @param viewId
     * @param <T>
     * @return
     */
    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;
    }
    public View getConvertView(){
        return mConvertView;
    }

    /**
     * 为textview设置字符串
     * @param viewId
     * @param text
     * @return
     */
    public ViewHolder setText(int viewId,String text){
        TextView textView=getView(viewId);
        textView.setText(text);
        return this;

    }

    /**
     * 为ImageView设置图片
     * @param viewId
     * @param drawableId
     * @return
     */
    public ViewHolder setImageResource(int viewId, int drawableId){
        ImageView view = getView(viewId);
        view.setImageResource(drawableId);
        return this;
    }
    /**
     * 为ImageView设置图片
     *
     * @param viewId
     * @param bm
     * @return
     */
    public ViewHolder setImageBitmap(int viewId, Bitmap bm)
    {
        ImageView view = getView(viewId);
        view.setImageBitmap(bm);
        return this;
    }

    /**
     * 可以按照自己的需求继续添加类似setText、setImageResource、setImageBitmap等方法哦
     *
     */
    
    public int getItemPosition(){
        return mPosition;
    }
}

CommonAdapter:

package com.example.bao.mysearchview;

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

import java.util.List;

/**
 * Created by bao on 2017/5/31.
 */

public  abstract class CommonAdapter<T> extends BaseAdapter {
    protected Context mContext;
    protected List<T> mDatas;
    protected LayoutInflater mInflater;
    protected int mLayoutId;

    public CommonAdapter(Context context, List<T> data,int layoutId) {
        mInflater=LayoutInflater.from(context);
        this.mContext = context;
        this.mDatas = data;
        mLayoutId=layoutId;
    }

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

    @Override
    public T getItem(int position) {
        return mDatas.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = ViewHolder.get(mContext, convertView, parent, mLayoutId,position);
        convert(viewHolder,getItem(position));
        return viewHolder.getConvertView();
    }

    protected abstract void convert(ViewHolder viewHolder, T item);

}

这里其实可以封装成一个通用的控件，有兴趣的话可以参考下这篇博客： http://blog.csdn.net/Yankee1967/article/details/52291487?locationNum=3&fps=1

项目源码： http://download.csdn.net/detail/qq_33748378/9856610