效果
Class
MainActivity.java
SecondActivity.java
Layout
activity_main.xml
activity_second.xml
item.xml
Adapter
MyAdapter.java
JavaBean
People.java
activity_main.xml
<android.support.design.widget.CoordinatorLayout
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"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll"/>
<EditText
android:layout_width="match_parent"
android:ems="10"
android:layout_height="wrap_content"
android:id="@+id/search"/>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:layout_height="match_parent"
android:layout_width="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:id="@+id/recycler_view"/>
</android.support.design.widget.CoordinatorLayout>
activity_second.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
</LinearLayout>
item.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp"
android:id="@+id/item_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="@+id/name"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text"
android:layout_marginTop="4dp"
android:id="@+id/age"/>
</LinearLayout>
People.java
public class People {
private String name;
private int age;
public People(String name, int age){
this.name=name;
this.age=age;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setAge(int age) {
this.age = age;
}
public int getAge() {
return age;
}
}
MainActivity.java
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private RecyclerView rv;
private EditText et;
private List<People> data = new ArrayList<>();
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bindViews();
initData();
handleRecyclerView();
}
private void bindViews() {
toolbar = findViewById(R.id.toolbar);
rv = findViewById(R.id.recycler_view);
et = findViewById(R.id.search);
}
private void initData() {
setSupportActionBar(toolbar);
data.add(new People("小红", 12));
data.add(new People("小明", 15));
data.add(new People("李磊", 16));
data.add(new People("红红", 13));
data.add(new People("艾玛", 14));
data.add(new People("李医生", 14));
data.add(new People("红钱", 12));
data.add(new People("喔哦", 11));
}
private void handleRecyclerView() {
adapter = new MyAdapter(this, data);
rv.setLayoutManager(new LinearLayoutManager(this));
rv.setAdapter(adapter);
et.addTextChangedListener(new TextWatcher(){
@Override
public void beforeTextChanged(CharSequence p1, int p2, int p3, int p4) {
}
@Override
public void onTextChanged(CharSequence p1, int p2, int p3, int p4) {
adapter.getFilter().filter(p1.toString());
}
@Override
public void afterTextChanged(Editable p1) {
}
});
}
}
SecondActivity.java
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
public class SecondActivity extends AppCompatActivity {
private String data;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
Intent intent = getIntent();
data = intent.getStringExtra("data");
Toast.makeText(this, data, Toast.LENGTH_LONG).show();
}
public static void actionStart(Context context, String str) {
Intent intent = new Intent(context, SecondActivity.class);
intent.putExtra("data", str);
context.startActivity(intent);
}
}
MyAdapter.java
import android.content.Context;
import android.graphics.Color;
import android.support.v7.widget.RecyclerView;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.ForegroundColorSpan;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements Filterable {
List<People> mDataList = new ArrayList<>();
List<People> filterList = new ArrayList<>();
private Context mContext;
private People people;
private OnItemClickListener listener;
private String charStr;
static class ViewHolder extends RecyclerView.ViewHolder {
LinearLayout parentView;
TextView nameView, ageView;
public ViewHolder(View view) {
super(view);
parentView = view.findViewById(R.id.item_parent);
nameView = view.findViewById(R.id.name);
ageView = view.findViewById(R.id.age);
}
}
public MyAdapter(Context context, List<People> datas) {
this.mContext = context;
this.mDataList = datas;
this.filterList = datas;
}
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false));
}
@Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, final int position) {
people = filterList.get(position);
if (!TextUtils.isEmpty(charStr)) {
SpannableString str = matchSearch(Color.RED, people.getName(), charStr);
holder.nameView.setText(str);
} else {
holder.nameView.setText(people.getName());
}
holder.ageView.setText(people.getAge() + "");
holder.parentView.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View p1) {
SecondActivity.actionStart(mContext, filterList.get(position).getName());
}
});
}
@Override
public int getItemCount() {
return filterList.size();
}
@Override
public Filter getFilter() {
return new Filter(){
@Override
protected Filter.FilterResults performFiltering(CharSequence charsequence) {
charStr = charsequence.toString();
if (TextUtils.isEmpty(charStr)) {
filterList = mDataList;
} else {
List<People> filteredList = new ArrayList<>();
for (int i=0; i < mDataList.size(); i++) {
if (mDataList.get(i).getName().contains(charStr)) {
filteredList.add(mDataList.get(i));
}
}
filterList = filteredList;
}
FilterResults filterRes = new FilterResults();
filterRes.values = filterList;
return filterRes;
}
@Override
protected void publishResults(CharSequence p1, Filter.FilterResults p2) {
filterList = (List<People>) p2.values;
notifyDataSetChanged();
}
};
}
private SpannableString matchSearch(int color, String str, String key) {
SpannableString ss = new SpannableString(str);
Matcher m = Pattern.compile(key).matcher(ss);
while (m.find()) {
int start = m.start();
int end = m.end();
ss.setSpan(new ForegroundColorSpan(color), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
return ss;
}
public interface OnItemClickListener {
public void onItemClick(String str);
}
public void setListener(OnItemClickListener listener) {
this.listener = listener;
}
}
网友评论