RecyclerView+EditText 动态搜索数据

1.创建一个学生类，保存姓名和年龄信息

package com.zmm.recyclerdynamicsearch;/** * Description: * Author:zhangmengmeng * Date:2017/4/1 * Time:下午1:11 */public class StudentBean {    private String name;    private int age;    public StudentBean(String name, int age) {        this.name = name;        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }}

2.RecyclerView 的Adapter

package com.zmm.recyclerdynamicsearch;import android.support.v7.widget.RecyclerView;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.TextView;import java.util.List;/** * Description: * Author:zhangmengmeng * Date:2017/4/1 * Time:上午11:57 */public class SearchAdapter extends RecyclerView.Adapter<SearchAdapter.SearchHolder> {    private List<StudentBean> mStudentBeanList;    private OnItemClickListener mOnItemClickListener;    public interface OnItemClickListener{        void OnItemClick(int position);    }    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {        mOnItemClickListener = onItemClickListener;    }    public SearchAdapter(List<StudentBean> studentBeanList) {        mStudentBeanList = studentBeanList;    }    @Override    public SearchHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view =  View.inflate(parent.getContext(), R.layout.item_search, null);        return new SearchHolder(view);    }    @Override    public void onBindViewHolder(SearchHolder holder, final int position) {        holder.setData(position);        holder.item_ll.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if(mOnItemClickListener != null){                    mOnItemClickListener.OnItemClick(position);                }            }        });    }    @Override    public int getItemCount() {        return mStudentBeanList.size();    }    class SearchHolder extends RecyclerView.ViewHolder{        private TextView item_name,item_age;        private LinearLayout item_ll;        public SearchHolder(View itemView) {            super(itemView);            item_name = (TextView) itemView.findViewById(R.id.item_name);            item_age = (TextView) itemView.findViewById(R.id.item_age);            item_ll = (LinearLayout) itemView.findViewById(R.id.item_ll);        }        public void setData(int position) {            item_name.setText(mStudentBeanList.get(position).getName());            item_age.setText(mStudentBeanList.get(position).getAge()+"");        }    }}

3.布局文件：

3.1

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:layout_height="wrap_content"              android:orientation="horizontal"              android:background="#00ffff"              android:id="@+id/item_ll"              android:padding="10px">    <TextView        android:id="@+id/item_name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="张三"        android:textSize="20sp"/>    <TextView        android:id="@+id/item_age"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="100px"        android:text="13"        android:textSize="20sp"/></LinearLayout>

3.2

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:layout_height="match_parent"              android:orientation="vertical">    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:background="@drawable/top_background"        android:paddingLeft="10dp"        android:paddingRight="10dp">        <RelativeLayout            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:layout_centerVertical="true"            android:gravity="center_vertical">            <EditText                android:id="@+id/et_search"                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:layout_marginRight="10dp"                android:background="@drawable/search_frame"                android:hint="Searching..."                android:paddingLeft="32dp"                android:singleLine="true"                android:textSize="12sp"/>            <ImageView                android:id="@+id/iv_delete"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_alignParentRight="true"                android:layout_centerInParent="true"                android:paddingRight="20dp"                android:src="@drawable/delete"                android:visibility="gone"/>        </RelativeLayout>    </RelativeLayout>    <android.support.v7.widget.RecyclerView        android:id="@+id/recycler_view"        android:layout_width="match_parent"        android:layout_height="match_parent"/></LinearLayout>

4.MainActivity

package com.zmm.recyclerdynamicsearch;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.text.Editable;import android.text.TextWatcher;import android.view.View;import android.widget.EditText;import android.widget.ImageView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;import butterknife.ButterKnife;import butterknife.InjectView;import butterknife.OnClick;public class MainActivity extends AppCompatActivity {    @InjectView(R.id.et_search)    EditText mEtSearch;    @InjectView(R.id.iv_delete)    ImageView mIvDelete;    @InjectView(R.id.recycler_view)    RecyclerView mRecyclerView;    private List<StudentBean> mStudentBeanList;    private List<StudentBean> mStudentBeanList2;    private SearchAdapter mSearchAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.inject(this);        initView();    }    private void initView() {        initData();        editTextSearchListener();    }    private void initData() {        if(mStudentBeanList != null && mStudentBeanList.size()>0){            mStudentBeanList.clear();            mStudentBeanList = null;        }        mStudentBeanList = new ArrayList<>();        //创建list2的目的相当于数据库,里面存储全部数据        mStudentBeanList2 = new ArrayList<>();        for (int i = 0; i < 20; i++) {            StudentBean studentBean = new StudentBean("Giousa_" + i, i + 10);            mStudentBeanList.add(studentBean);            mStudentBeanList2.add(studentBean);        }        LinearLayoutManager layoutManager = new LinearLayoutManager(this);        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);        mRecyclerView.setLayoutManager(layoutManager);        mSearchAdapter = new SearchAdapter(mStudentBeanList);        mRecyclerView.setAdapter(mSearchAdapter);        mSearchAdapter.setOnItemClickListener(new SearchAdapter.OnItemClickListener() {            @Override            public void OnItemClick(int position) {                Toast.makeText(MainActivity.this,mStudentBeanList.get(position).getName(),Toast.LENGTH_SHORT).show();            }        });    }    private void editTextSearchListener() {        mEtSearch.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.length() == 0){                    mIvDelete.setVisibility(View.GONE);                }else {                    mIvDelete.setVisibility(View.VISIBLE);                }                search();            }        });    }    private void search() {        String data = mEtSearch.getText().toString().trim();        mStudentBeanList.clear();        for (int i = 0; i < mStudentBeanList2.size(); i++) {            StudentBean studentBean = mStudentBeanList2.get(i);            String ageStr = studentBean.getAge()+"";            //原理很简单,只要检索的字符,被数据库包含,即可展示出来            if(studentBean.getName().contains(data) || ageStr.contains(data)){                mStudentBeanList.add(studentBean);            }        }        mSearchAdapter.notifyDataSetChanged();    }    @OnClick(R.id.iv_delete)    public void onClick() {        mEtSearch.setText("");    }}

~~~Demo下载~~~