一、列表数据搜索
对于常见的列表搜索，大概分两种，一种是在当前页面搜索，一种是跳页面搜索。
常见场景
1、RecyclerView和listView等的列表搜索
2、搜索联系人
3、搜索应用名称
等等。
数据来源
1、取自数据库
2、本地数据源
不管是联网取得，还是真的是写死在本地，都有存进内存的过程，所以姑且大言不惭的说，所有数据的都是本地数据。
其实每一个开发的搜索几乎都是必然面对的，写此文也是闹笑话，欢迎补充评论提点，如果空闲，定当fix。
采取的简单方法
三个数据集合
1、一个源数据
2、一个copy于源数据的完整拷贝数据
3、一个temp临时搜索结果数据
可优化细节
拼音模糊音搜索
上图，bie bi bi，show me your gif
all.gif
二、说明
二.1、页面
demo大概分成四个小页，
1、很挫的Edittext+ListView
2、Android Toolbar+SearchView
3、组装的ToolBar 搜索
（为什么要组装，因为SearchView这个哥们的颜色和图标等不好控制，野性难驯，Google亡我之心不死，无奈之下，剑走偏锋，组装算了）
注：2和3都是在内页搜索
4、跳页面搜索
二.2、数据来源
文本笑话API
Json 示例
{
"id": "580a0ac06e36a4ea48ffa788",
"title": "初中的体育老师说：谁",
"text": "初中的体育老师说：谁敢再穿裙子上我的课，就罚她倒立。",
"type": 1,
"ct": "2016-10-21 20:32:00.319"
}
抽取20个节点，写成固定返回字符串，方便demo演示。
附：gradle引入
compile 'com.google.code.gson:gson:2.7'
compile 'com.android.support:design:24.2.0'
compile 'com.android.support:appcompat-v7:24.2.0'
compile 'com.android.support:cardview-v7:24.2.0'
三、眼保健操第一节：Edittext+ListView
简单E+L.gif
没什么好说的，上代码吧
布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/activity_main"
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:orientation="vertical"
tools:context="com.am.toolbarsearch.Activity.SimpleSearchActivity">
<EditText
android:id="@+id/mEtSearch"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_margin="10dp"
android:hint="请输入搜索内容"
android:background="#66000000"
/>
<ListView
android:id="@+id/mLv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
android:background="#664fb9e2"
></ListView>
</LinearLayout>
adapter
public class JokeAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<JokeEntity.ContentlistBean> mDatas;
public JokeAdapter(Context context, ArrayList<JokeEntity.ContentlistBean> datas) {
mContext = context;
mDatas = datas;
}
@Override
public int getCount() {
return mDatas.size();
}
@Override
public Object getItem(int i) {
return mDatas.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder viewHolder;
if(view ==null){
view = View.inflate(mContext, R.layout.item_joke,null);
viewHolder = new ViewHolder();
viewHolder.mTvTit = (TextView) view.findViewById(R.id.mTvTit);
viewHolder.mTvContent = (TextView) view.findViewById(R.id.mTvContent);
viewHolder.mTvTime = (TextView) view.findViewById(R.id.mTvTime);
view.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) view.getTag();
}
JokeEntity.ContentlistBean contentlistBean = mDatas.get(i);
viewHolder.mTvTit.setText(contentlistBean.title);
viewHolder.mTvContent.setText(contentlistBean.text);
viewHolder.mTvTime.setText(contentlistBean.ct);
return view;
}
class ViewHolder{
TextView mTvTit;
TextView mTvContent;
TextView mTvTime;
}
}
.
.
Activity
public class SimpleSearchActivity extends AppCompatActivity {
private ListView mLv;
private JokeAdapter mJokeAdapter;
private EditText mEtSearch;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
private ArrayList<JokeEntity.ContentlistBean> mCopyBeansList = new ArrayList<>();
private static final int MSG_UPDATE_SEARCH_RESULT = 1001;
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case MSG_UPDATE_SEARCH_RESULT:
mJokeAdapter.notifyDataSetChanged();
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_simple_search);
mLv = (ListView) findViewById(R.id.mLv);
mEtSearch = (EditText) findViewById(R.id.mEtSearch);
mEtSearch.addTextChangedListener(new JokeListener());
try {
JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);
mCopyBeansList.addAll(mBeansList);
mJokeAdapter = new JokeAdapter(SimpleSearchActivity.this, mBeansList);
mLv.setAdapter(mJokeAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
class JokeListener implements TextWatcher{
@Override
public void afterTextChanged(Editable s) {//表示最终内容
Log.d("afterTextChanged", s.toString());
}
/**
*
* @param s
* @param start 开始的位置
* @param count 被改变的旧内容数
* @param after 改变后的内容数量
*/
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//这里的s表示改变之前的内容，通常start和count组合，可以在s中读取本次改变字段中被改变的内容。而after表示改变后新的内容的数量。
}
/**
*
* @param s
* @param start 开始位置
* @param before 改变前的内容数量
* @param count 新增数
*/
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
//这里的s表示改变之后的内容，通常start和count组合，可以在s中读取本次改变字段中新的内容。而before表示被改变的内容的数量。
doSearch(s);
}
}
private ArrayList<JokeEntity.ContentlistBean> mTempBeansList;
private void doSearch(CharSequence str) {
mTempBeansList = new ArrayList<>();
// 如果需要排序考虑 Pair
for(int i=0;i<mCopyBeansList.size();i++){
if(mCopyBeansList.get(i).title.contains(str)
||mCopyBeansList.get(i).text.contains(str)
||mCopyBeansList.get(i).ct.contains(str)){
mTempBeansList.add(mCopyBeansList.get(i));
}
}
mBeansList.clear();
mBeansList.addAll(mTempBeansList);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
mTempBeansList.clear();
}
}
.
.
关键代码
private void doSearch(CharSequence str) {
mTempBeansList = new ArrayList<>();
// 如果需要排序考虑 Pair
for(int i=0;i<mCopyBeansList.size();i++){
if(mCopyBeansList.get(i).title.contains(str)
||mCopyBeansList.get(i).text.contains(str)
||mCopyBeansList.get(i).ct.contains(str)){
mTempBeansList.add(mCopyBeansList.get(i));
}
}
mBeansList.clear();
mBeansList.addAll(mTempBeansList);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
mTempBeansList.clear();
}
1、在onCreate得到完整源数据之后，复制一份到mCopyBeansList
2、在doSearch里面for循环，对标题，文本，时间进行搜索匹配，利用temp集合进行接收。
3、mBeansList的数据替换为temp集合
4、更新列表
四、眼保健操第二节：ToolBar+SearchView
Toolbar+SearchView.gif
其实关于搜索是几乎一样的，值得说一下就是这个Toolbar+SearchView的样式！
Google Toolbar+Search官方指导书，有兴趣可以看一下
Google大概这么说：
STEP1、menu的item你要说明你要一个SearchView呀少年
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MainActivity" >
<!--特殊之处就在于 app:actionViewClass="android.support.v7.widget.SearchView" 这一句-->
<item android:id="@+id/search"
android:title="@string/search"
android:icon="@drawable/icon_search"
android:orderInCategory="90"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="ifRoom" />
<item android:id="@+id/about"
android:title="@string/about"
android:orderInCategory="90"
app:showAsAction="never"
/>
</menu>
.
.
STEP2 、你要弄一个关于SearchView的xml啊少年，还有啊，你的Activity要把他关联进去呀
弄一个呗
Paste_Image.png
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_name"
android:imeOptions="actionSearch"
android:hint="姓名"
android:layout_height="30dp"
android:layout_width="90dp"/>
关联就关联呗
<activity android:name=".Activity.ToolBarSearchActivity"
android:theme="@style/AppTheme"
app:popupTheme="@style/OverflowMenuStyle"
>
<!-- meta tag and intent filter go into results activity -->
<meta-data
android:name="android.app.searchable"
android:resource="@xml/xml_searchable"/>
<intent-filter>
<action android:name="android.intent.action.SEARCH"/>
</intent-filter>
</activity>
STEP3、在关联菜单你要把SearchView给我弄出来
// 创建关联菜单
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
searchView.setOnQueryTextListener(this);
return true;
}
揍是这样，你通过setOnQueryTextListener实现接口就可以用啦。
嗯，不假，可以用的啦。
但是，SearchView不可以该图片啊，不可改颜色啊。没有方法可以设置啊。
搜索图标是黑色
Paste_Image.png
搜索时叉叉和hint一样的小搜索图片是黑色
Paste_Image.png
还好，字体是白色，这个白色是这样子实现的。
Paste_Image.png
图片引自： Toolbar SearchView cursor color
不行，黑色不爽，要白色！要自定义！要个性！
好的，稍等片刻，美味马上就好。
解决toolbar中searchview不能改变图标
按照上文的说法呢，是你引入mudole的方式引入v7，然后改图去。。。
其实三分有理，但是就是一想到module引入v7，瞬间不想动弹。
一口老血喷涌而出，谷大哥亡我之心不死！
罢了罢了，不用你的了，组装吧！！
组装归组装，我先把代码贴上呀。
public class ToolBarSearchActivity extends AppCompatActivity implements SearchView.OnQueryTextListener {
private Toolbar mToolBar;
private RecyclerView mRvJokeList;
private JokeToolSearchRvAdapter mJokeToolSearchRvAdapter;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
private ArrayList<JokeEntity.ContentlistBean> mCopyBeansList = new ArrayList<>();
private static final int MSG_UPDATE_SEARCH_RESULT = 1001;
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case MSG_UPDATE_SEARCH_RESULT:
mJokeToolSearchRvAdapter.notifyDataSetChanged();
break;
}
}
};
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_toolbar);
mToolBar = (Toolbar) findViewById(R.id.mToolBar);
mToolBar.setTitle("ToolBar搜索");
setSupportActionBar(mToolBar);
mToolBar.setNavigationIcon(R.drawable.icon_arrow_nev);
mToolBar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
mToolBar.setOnMenuItemClickListener(onMenuItemClick);
mToolBar.setTitleTextColor(ContextCompat.getColor(this,R.color.white));
mRvJokeList = (RecyclerView) findViewById(R.id.mRvJokeList);
mRvJokeList.setLayoutManager(new LinearLayoutManager(this));
try {
JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);
mCopyBeansList.addAll(mBeansList);
mJokeToolSearchRvAdapter = new JokeToolSearchRvAdapter(ToolBarSearchActivity.this, mBeansList);
mRvJokeList.setAdapter(mJokeToolSearchRvAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
// 创建关联菜单
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
searchView.setOnQueryTextListener(this);
return true;
}
// 菜单的点击回调
private Toolbar.OnMenuItemClickListener onMenuItemClick = new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.search:
Log.d(GeneralConst.TAG,"====== Click Search");
break;
case R.id.about:
Log.d(GeneralConst.TAG,"====== Click About");
break;
}
return true;
}
};
// === SearchView 监听的两个方法 onQueryTextSubmit 和 onQueryTextChange
/**
* 提交 输入搜索内容,按下左侧的 × 不会触发此方法,只有按下键盘右下脚的搜索符号才会触发此方法
* @param query
* @return
*/
@Override
public boolean onQueryTextSubmit(String query) {
Log.d(GeneralConst.TAG,"onQueryTextSubmit: "+query);
return false;
}
/**
* 输入的文本发生变化
* @param newText
* @return
*/
@Override
public boolean onQueryTextChange(String newText) {
Log.d(GeneralConst.TAG,"onQueryTextChange: "+newText);
doSearch(newText);
return false;
}
private ArrayList<JokeEntity.ContentlistBean> mTempBeansList;
private void doSearch(CharSequence str) {
Log.d(GeneralConst.TAG,"doSearch");
mTempBeansList = new ArrayList<>();
// 如果需要排序考虑 Pair
for(int i=0;i<mCopyBeansList.size();i++){
JokeEntity.ContentlistBean contentlistBean = mCopyBeansList.get(i);
if(mCopyBeansList.get(i).title.contains(str)
||mCopyBeansList.get(i).text.contains(str)
||mCopyBeansList.get(i).ct.contains(str)){
mTempBeansList.add(mCopyBeansList.get(i));
}
}
mBeansList.clear();
mBeansList.addAll(mTempBeansList);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
mTempBeansList.clear();
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
Log.d(GeneralConst.TAG,"onNewIntent");
}
}
.
.
用的是RecyclerView
贴上代码
adapter
public class JokeToolSearchRvAdapter extends RecyclerView.Adapter<JokeToolSearchRvAdapter.ViewHolder> {
public ArrayList<JokeEntity.ContentlistBean> mDatas = null;
public Context mContext;
// 点击回调
public interface OnItemClickLitener
{
void onItemClick(View view, int position); // 点击
void onItemLongClick(View view, int position); // 长按
}
private OnItemClickLitener mOnItemClickLitener;
public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener)
{
this.mOnItemClickLitener = mOnItemClickLitener;
}
public JokeToolSearchRvAdapter(Context context, ArrayList<JokeEntity.ContentlistBean> datas) {
this.mDatas = datas;
this.mContext = context;
}
//创建新View，被LayoutManager所调用
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_joke_toolbar_search,viewGroup,false);
return new ViewHolder(view);
}
//将数据与界面进行绑定的操作
@Override
public void onBindViewHolder(final ViewHolder viewHolder, int position) {
JokeEntity.ContentlistBean nearPeopleEntity = mDatas.get(position);
viewHolder.mTvJokeTit.setText(nearPeopleEntity.title);
viewHolder.mTvJokeText.setText(nearPeopleEntity.text);
viewHolder.mTvJokeTime.setText(nearPeopleEntity.ct);
// 如果设置了回调，则设置点击事件
if (mOnItemClickLitener != null)
{
viewHolder.mLlItemRoot.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
int pos = viewHolder.getLayoutPosition();
mOnItemClickLitener.onItemClick(viewHolder.mLlItemRoot, pos);
}
});
viewHolder.mLlItemRoot.setOnLongClickListener(new View.OnLongClickListener()
{
@Override
public boolean onLongClick(View v)
{
int pos = viewHolder.getLayoutPosition();
mOnItemClickLitener.onItemLongClick(viewHolder.mLlItemRoot, pos);
return false;
}
});
}
}
//获取数据的数量
@Override
public int getItemCount() {
return mDatas.size();
}
//自定义的ViewHolder，持有每个Item的的所有界面元素
public static class ViewHolder extends RecyclerView.ViewHolder {
private LinearLayout mLlItemRoot;
public TextView mTvJokeTit;
public TextView mTvJokeText;
public TextView mTvJokeTime;
public ViewHolder(View view){
super(view);
mLlItemRoot = (LinearLayout) view.findViewById(R.id.mLlItemRoot);
mTvJokeTit = (TextView) view.findViewById(R.id.mTvJokeTit);
mTvJokeText = (TextView) view.findViewById(R.id.mTvJokeText);
mTvJokeTime = (TextView) view.findViewById(R.id.mTvJokeTime);
}
}
}
.
.
接下来是布局呀
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mCvItemRoot"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
card_view:cardBackgroundColor="@color/colorPrimary"
card_view:cardCornerRadius="10dp"
card_view:cardElevation="8dp"
android:layout_margin="10dp"
>
<LinearLayout
android:id="@+id/mLlItemRoot"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="5dp"
android:layout_margin="2dp">
<TextView
android:id="@+id/mTvJokeTit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="一个标题"
android:maxLines="2"
android:textSize="18sp"
android:padding="10dp"
android:textColor="#f5f2f2"
/>
<TextView
android:id="@+id/mTvJokeText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="描述"
android:textSize="16sp"
android:padding="10dp"
android:textColor="#72df9c"
/>
<TextView
android:id="@+id/mTvJokeTime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:text="描述"
android:textSize="16sp"
android:padding="10dp"
android:textColor="#aeb6b1"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
注：JokeToolSearchRvAdapter和item和后面的几个页面是通用的。
五、眼保健操第三节 在Toolbar的世界里组装Search
组装.gif
大概是实现这么几点
1、按下搜索，弹出edittext和清除的按钮
2、按下清除按钮，如果editte有文字，清除文字，如果没有文字，才切换为放大镜状态
好啦，上代码啦
是的没错，这次应该先看布局文件，组装嘛
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/mToolBar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="@style/AppTheme"
app:popupTheme="@style/OverflowMenuStyle"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="@+id/mTvDiyTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
tools:text="标题先生"
android:textColor="@color/white"
android:layout_centerVertical="true"
android:textSize="15dp"
/>
<ImageView
android:id="@+id/mIvSearch"
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_marginRight="20dp"
android:background="@drawable/icon_search"
android:layout_marginLeft="10dp"
/>
<ImageView
android:id="@+id/mIvClean"
android:layout_width="13dp"
android:layout_height="13dp"
android:background="@drawable/icon_error"
android:layout_centerVertical="true"
android:layout_toLeftOf="@id/mIvSearch"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:visibility="gone"
/>
<EditText
android:id="@+id/mEtDiySearch"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_centerVertical="true"
android:layout_toLeftOf="@id/mIvClean"
android:background="@null"
android:paddingRight="33dp"
android:hint="请输入搜索内容"
android:textColorHint="@color/white"
android:textColor="@color/white"
android:maxLines="1"
android:textSize="14sp"
android:visibility="gone"
/>
<View
android:id="@+id/mLine"
android:layout_width="match_parent"
android:layout_height="0.4dp"
android:background="@color/little_gray"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
/>
</RelativeLayout>
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.RecyclerView
android:id="@+id/mRvJokeList"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
注：有的地方虽然我们写的是match_parent，但是在运行中，如果出现Toobar的menu按钮或者Toobar的返回箭头，那么还是自动调整位置的，不用担心重叠的问题滴，
由于Adapter和item是一样，当然就没有贴上去必要啦。
看ToolBarSearchDiyActivity代码
public class ToolBarSearchDiyActivity extends AppCompatActivity implements View.OnClickListener {
private Toolbar mToolBar;
private ImageView mIvSearch; //搜索的放大镜
private ImageView mIvClean; // 叉叉,清理 取消
private TextView mTvDiyTitle;
private EditText mEtDiySearch; // 搜索内容
private View mLine;
private RecyclerView mRvJokeList;
private JokeToolSearchRvAdapter mJokeToolSearchRvAdapter;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
private ArrayList<JokeEntity.ContentlistBean> mCopyBeansList = new ArrayList<>();
private static final int MSG_UPDATE_SEARCH_RESULT = 1001;
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case MSG_UPDATE_SEARCH_RESULT:
mJokeToolSearchRvAdapter.notifyDataSetChanged();
break;
}
}
};
private String mFinalSearch = "";
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_toolbar_diy);
mToolBar = (Toolbar) findViewById(R.id.mToolBar);
mToolBar.setTitle("");//无需设置,在此无用
setSupportActionBar(mToolBar);
mToolBar.setNavigationIcon(R.drawable.icon_arrow_nev);
mToolBar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
mToolBar.setOnMenuItemClickListener(onMenuItemClick);
mToolBar.setTitleTextColor(ContextCompat.getColor(this,R.color.white));
mTvDiyTitle = (TextView) findViewById(R.id.mTvDiyTitle);
mTvDiyTitle.setText("ToolBar搜索DIY");
mIvSearch = (ImageView) findViewById(R.id.mIvSearch);
mIvClean = (ImageView) findViewById(R.id.mIvClean);
mEtDiySearch = (EditText) findViewById(R.id.mEtDiySearch);
mLine = findViewById(R.id.mLine);
mIvSearch.setOnClickListener(this);
mIvClean.setOnClickListener(this);
mIvClean.setVisibility(View.GONE);
mEtDiySearch.setVisibility(View.GONE);
mLine.setVisibility(View.GONE);
mEtDiySearch.addTextChangedListener(new DiySerachWatch());
mRvJokeList = (RecyclerView) findViewById(R.id.mRvJokeList);
mRvJokeList.setLayoutManager(new LinearLayoutManager(this));
try {
JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);
mCopyBeansList.addAll(mBeansList);
mJokeToolSearchRvAdapter = new JokeToolSearchRvAdapter(ToolBarSearchDiyActivity.this, mBeansList);
mRvJokeList.setAdapter(mJokeToolSearchRvAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
// 创建关联菜单
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search_diy, menu);
return true;
}
// 菜单的点击回调
private Toolbar.OnMenuItemClickListener onMenuItemClick = new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.search:
Log.d(GeneralConst.TAG,"====== Click Search");
break;
case R.id.about:
Log.d(GeneralConst.TAG,"====== Click About");
break;
}
return true;
}
};
private ArrayList<JokeEntity.ContentlistBean> mTempBeansList;
private void doSearch(CharSequence str) {
Log.d(GeneralConst.TAG,"doSearch");
mTempBeansList = new ArrayList<>();
// 如果需要排序考虑 Pair
for(int i=0;i<mCopyBeansList.size();i++){
JokeEntity.ContentlistBean contentlistBean = mCopyBeansList.get(i);
if(mCopyBeansList.get(i).title.contains(str)
||mCopyBeansList.get(i).text.contains(str)
||mCopyBeansList.get(i).ct.contains(str)){
mTempBeansList.add(mCopyBeansList.get(i));
}
}
mBeansList.clear();
mBeansList.addAll(mTempBeansList);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
mTempBeansList.clear();
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.mIvSearch:
mEtDiySearch.setVisibility(View.VISIBLE);
mIvClean.setVisibility(View.VISIBLE);
mLine.setVisibility(View.VISIBLE);
mTvDiyTitle.setVisibility(View.GONE);
alpha(mEtDiySearch);
alpha(mIvClean);
break;
case R.id.mIvClean:
if(mFinalSearch.length()>0){
mEtDiySearch.setText("");
}else{
mEtDiySearch.setVisibility(View.GONE);
mIvClean.setVisibility(View.GONE);
mLine.setVisibility(View.GONE);
mTvDiyTitle.setVisibility(View.VISIBLE);
mBeansList.clear();
mBeansList.addAll(mCopyBeansList);
alpha(mTvDiyTitle);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}
break;
}
}
/**
* 透明度
* @param view
*/
public void alpha(View view){
// iv.setAlpha(alpha);
// iv.getAlpha()
ObjectAnimator oa = ObjectAnimator.ofFloat(view, "alpha", 0.0f,0.2f,0.4f,0.6f,0.8f,1.0f);
oa.setDuration(300);
oa.start();
}
class DiySerachWatch implements TextWatcher {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
mFinalSearch = s.toString();
doSearch(mFinalSearch);
}
public void afterTextChanged(Editable s) {
}
}
}
大概就是这样啦。
六、眼保健操第四节 跳页搜索
这个其实没什么好说的，就是一个页面展示数据，然后我这里是通过intent传值的方式吧数据集合传过去搜索页面的。
JustListActivity
列表页面（按下搜索跳页面）
public class JustListActivity extends AppCompatActivity{
private Toolbar mToolBar;
private RecyclerView mRvJokeList;
private JokeToolSearchRvAdapter mJokeToolSearchRvAdapter;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_just_list);
mToolBar = (Toolbar) findViewById(R.id.mToolBar);
mToolBar.setTitle("跳页搜索");
setSupportActionBar(mToolBar);
mToolBar.setNavigationIcon(R.drawable.icon_arrow_nev);
mToolBar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
mToolBar.setTitleTextColor(ContextCompat.getColor(this,R.color.white));
mRvJokeList = (RecyclerView) findViewById(R.id.mRvJokeList);
mRvJokeList.setLayoutManager(new LinearLayoutManager(this));
try {
JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);
mJokeToolSearchRvAdapter = new JokeToolSearchRvAdapter(JustListActivity.this, mBeansList);
mRvJokeList.setAdapter(mJokeToolSearchRvAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
mToolBar.setOnMenuItemClickListener(onMenuItemClick);
}
// 创建关联菜单
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search_just_list, menu);
return true;
}
// 菜单的点击回调
private Toolbar.OnMenuItemClickListener onMenuItemClick = new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.search:
if(null != mBeansList){
if(mBeansList.size()<=0){
Toast.makeText(JustListActivity.this,"暂无数据可以搜索",Toast.LENGTH_SHORT).show();
}else{
Intent openSearch = new Intent(JustListActivity.this,OnlySearchActivity.class);
// 序列化,传递对象数组
openSearch.putParcelableArrayListExtra(GeneralConst.TRANS_LIST,mBeansList);
startActivity(openSearch);
}
}
break;
case R.id.about:
Log.d(GeneralConst.TAG,"====== Click About");
break;
}
return true;
}
};
}
关键代码
Intent openSearch = new Intent(JustListActivity.this,OnlySearchActivity.class);
// 序列化,传递对象数组
openSearch.putParcelableArrayListExtra(GeneralConst.TRANS_LIST,mBeansList);
startActivity(openSearch);
.
.
OnlySearchActivity
跳转到的搜索页
（其实这个页面没什么逻辑，和前方大多一样，唯一区别就是数据是上一个传递过来的，你要说不传递应该联网获取当然也是可以的）
public class OnlySearchActivity extends AppCompatActivity implements View.OnClickListener {
private Toolbar mToolBar;
private ImageView mIvSearch; //搜索的放大镜
private ImageView mIvClean; // 叉叉,清理 取消
private TextView mTvDiyTitle;
private EditText mEtDiySearch; // 搜索内容
private View mLine;
private RecyclerView mRvJokeList;
private JokeToolSearchRvAdapter mJokeToolSearchRvAdapter;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
private ArrayList<JokeEntity.ContentlistBean> mCopyBeansList = new ArrayList<>();
private static final int MSG_UPDATE_SEARCH_RESULT = 1001;
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case MSG_UPDATE_SEARCH_RESULT:
mJokeToolSearchRvAdapter.notifyDataSetChanged();
break;
}
}
};
private String mFinalSearch = "";
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_only_search);
mToolBar = (Toolbar) findViewById(R.id.mToolBar);
mToolBar.setTitle("");//无需设置,在此无用
setSupportActionBar(mToolBar);
mToolBar.setNavigationIcon(R.drawable.icon_arrow_nev);
mToolBar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
mToolBar.setOnMenuItemClickListener(onMenuItemClick);
mToolBar.setTitleTextColor(ContextCompat.getColor(this,R.color.white));
mTvDiyTitle = (TextView) findViewById(R.id.mTvDiyTitle);
mTvDiyTitle.setText("传数据 搜索");
mIvSearch = (ImageView) findViewById(R.id.mIvSearch);
mIvClean = (ImageView) findViewById(R.id.mIvClean);
mEtDiySearch = (EditText) findViewById(R.id.mEtDiySearch);
mLine = findViewById(R.id.mLine);
mIvSearch.setOnClickListener(this);
mIvClean.setOnClickListener(this);
mIvClean.setVisibility(View.GONE);
mEtDiySearch.setVisibility(View.GONE);
mLine.setVisibility(View.GONE);
mEtDiySearch.addTextChangedListener(new OnlySearchActivity.DiySerachWatch());
mRvJokeList = (RecyclerView) findViewById(R.id.mRvJokeList);
mRvJokeList.setLayoutManager(new LinearLayoutManager(this));
try {
/*JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);*/
mBeansList = getIntent().getParcelableArrayListExtra(GeneralConst.TRANS_LIST);
mCopyBeansList.addAll(mBeansList);
mJokeToolSearchRvAdapter = new JokeToolSearchRvAdapter(OnlySearchActivity.this, mBeansList);
mRvJokeList.setAdapter(mJokeToolSearchRvAdapter);
} catch (Exception e) {
e.printStackTrace();
}
}
// 创建关联菜单
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_search_diy, menu);
return true;
}
// 菜单的点击回调
private Toolbar.OnMenuItemClickListener onMenuItemClick = new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.search:
Log.d(GeneralConst.TAG,"====== Click Search");
break;
case R.id.about:
Log.d(GeneralConst.TAG,"====== Click About");
break;
}
return true;
}
};
private ArrayList<JokeEntity.ContentlistBean> mTempBeansList;
private void doSearch(CharSequence str) {
Log.d(GeneralConst.TAG,"doSearch");
mTempBeansList = new ArrayList<>();
// 如果需要排序考虑 Pair
for(int i=0;i<mCopyBeansList.size();i++){
JokeEntity.ContentlistBean contentlistBean = mCopyBeansList.get(i);
if(mCopyBeansList.get(i).title.contains(str)
||mCopyBeansList.get(i).text.contains(str)
||mCopyBeansList.get(i).ct.contains(str)){
mTempBeansList.add(mCopyBeansList.get(i));
}
}
mBeansList.clear();
mBeansList.addAll(mTempBeansList);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
mTempBeansList.clear();
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.mIvSearch:
mEtDiySearch.setVisibility(View.VISIBLE);
mIvClean.setVisibility(View.VISIBLE);
mLine.setVisibility(View.VISIBLE);
mTvDiyTitle.setVisibility(View.GONE);
alpha(mEtDiySearch);
alpha(mIvClean);
break;
case R.id.mIvClean:
if(mFinalSearch.length()>0){
mEtDiySearch.setText("");
}else{
mEtDiySearch.setVisibility(View.GONE);
mIvClean.setVisibility(View.GONE);
mLine.setVisibility(View.GONE);
mTvDiyTitle.setVisibility(View.VISIBLE);
mBeansList.clear();
mBeansList.addAll(mCopyBeansList);
alpha(mTvDiyTitle);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}
break;
}
}
/**
* 透明度
* @param view
*/
public void alpha(View view){
ObjectAnimator oa = ObjectAnimator.ofFloat(view, "alpha", 0.0f,0.2f,0.4f,0.6f,0.8f,1.0f);
oa.setDuration(300);
oa.start();
}
class DiySerachWatch implements TextWatcher {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
mFinalSearch = s.toString();
doSearch(mFinalSearch);
}
public void afterTextChanged(Editable s) {
}
}
}
关键代码
mBeansList = getIntent().getParcelableArrayListExtra(GeneralConst.TRANS_LIST);
嗯，大概就到这里啦。
七、班主任检查之—— Filter
七.1、 ListView BaseAdapter 与 Filter
在Adapter中自定义过滤类，继承自Filter，实现过滤。
LvFliter.gif
（ArrayAdapter自带Fliter，但是这个太弱，一般我们都是BaseAdapter中自定义Filter）
说起来也简单，无非就是下面这几步
step1
在adapter自定义过滤类，继承自Filter，完善两个方法
performFiltering 定义搜索规则。
publishResults 对搜索结果的处理
step2
BaseAdapter 实现 Filterable接口，复写getFilter方法
step3
ListView开启过滤功能
mLv.setTextFilterEnabled(true); // 开启过滤功能
step4
在需要设置过滤的地方设置搜索，有两种方式
mLv.setFilterText(str.toString().trim());//设置过滤关键字 会带上一个局域屏幕中心的搜索文本提示
mJokeFillterAdapter.getFilter().filter(str.toString().trim()); // 不会带上一个局域屏幕中心的搜索文本提示
上代码吧：
Adapter
public class JokeFillterAdapter extends BaseAdapter implements Filterable {
private Context mContext;
private ArrayList<JokeEntity.ContentlistBean> mDatas;
private ArrayList<JokeEntity.ContentlistBean> mCppyDatas;
private static final String TAG = "TEST_SEARCH";
private MyFilter mFilter;
public JokeFillterAdapter(Context context, ArrayList<JokeEntity.ContentlistBean> datas) {
mContext = context;
mDatas = datas;
mCppyDatas = datas; // 备份数据
}
@Override
public int getCount() {
return mDatas.size();
}
@Override
public Object getItem(int i) {
return mDatas.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder viewHolder;
if(view ==null){
view = View.inflate(mContext, R.layout.item_joke_fix,null);
viewHolder = new ViewHolder();
viewHolder.mTvTit = (TextView) view.findViewById(R.id.mTvTit);
viewHolder.mTvContent = (TextView) view.findViewById(R.id.mTvContent);
viewHolder.mTvTime = (TextView) view.findViewById(R.id.mTvTime);
view.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) view.getTag();
}
JokeEntity.ContentlistBean contentlistBean = mDatas.get(i);
viewHolder.mTvTit.setText(contentlistBean.title);
viewHolder.mTvContent.setText(contentlistBean.text);
viewHolder.mTvTime.setText(contentlistBean.ct);
return view;
}
class ViewHolder{
TextView mTvTit;
TextView mTvContent;
TextView mTvTime;
}
//当ListView调用setTextFilter()方法的时候，便会调用该方法
@Override
public Filter getFilter() {
if (mFilter ==null){
mFilter = new MyFilter();
}
return mFilter;
}
//我们需要定义一个过滤器的类来定义过滤规则
/**
* 自定义 Filter类
*
* 两个方法:
* performFiltering 定义搜索规则。
* publishResults 对搜索结果的处理
*/
class MyFilter extends Filter{
//我们在performFiltering(CharSequence charSequence)这个方法中定义过滤规则
@Override
protected FilterResults performFiltering(CharSequence charSequence) {
FilterResults result = new FilterResults();
List<JokeEntity.ContentlistBean> tempList ; // temp中间集合
if (TextUtils.isEmpty(charSequence)){//当过滤的关键字为空的时候，我们则显示所有的数据
tempList = mCppyDatas;
}else {//否则把符合条件的数据对象添加到集合中
tempList = new ArrayList<>();
for (JokeEntity.ContentlistBean recomend:mCppyDatas){
if (recomend.text.contains(charSequence)||recomend.title.contains(charSequence)||recomend.ct.contains(charSequence)){
Log.d(TAG,"performFiltering:"+recomend.toString());
tempList.add(recomend);
}
}
}
result.values = tempList; //符合搜索的结果的数据集合
result.count = tempList.size();//符合搜索的结果的数据个数
return result;
}
//在publishResults方法中告诉适配器更新界面
@Override
protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
mDatas = (ArrayList<JokeEntity.ContentlistBean>)filterResults.values;
Log.d(TAG,"publishResults:"+filterResults.count);
if (filterResults.count>0){
notifyDataSetChanged();//通知数据发生了改变
Log.d(TAG,"publishResults:notifyDataSetChanged");
}else {
notifyDataSetInvalidated();//通知数据失效
Log.d(TAG,"publishResults:notifyDataSetInvalidated");
}
}
}
}
注：构造函数的对mCppyDatas进行了赋值，得到了备份的数据。
.
.
Activity
public class LvFilterSearchActivity extends AppCompatActivity {
private ListView mLv;
private JokeFillterAdapter mJokeFillterAdapter;
private EditText mEtSearch;
private ArrayList<JokeEntity.ContentlistBean> mBeansList;
private static final int MSG_UPDATE_SEARCH_RESULT = 1001;
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case MSG_UPDATE_SEARCH_RESULT:
mJokeFillterAdapter.notifyDataSetChanged();
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_simple_search);
mLv = (ListView) findViewById(R.id.mLv);
mLv.setTextFilterEnabled(true); // 开启过滤功能
mEtSearch = (EditText) findViewById(R.id.mEtSearch);
mEtSearch.addTextChangedListener(new JokeListener());
try {
JSONObject jsonObject = new JSONObject(GeneralConst.getImitateJson());
Gson gson = new Gson();
Type tokenType = new TypeToken<List<JokeEntity.ContentlistBean>>(){}.getType();
mBeansList = gson.fromJson(jsonObject.optString("contentlist"), tokenType);
mJokeFillterAdapter = new JokeFillterAdapter(LvFilterSearchActivity.this, mBeansList);
mLv.setAdapter(mJokeFillterAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
class JokeListener implements TextWatcher{
@Override
public void afterTextChanged(Editable s) {//表示最终内容
Log.d("afterTextChanged", s.toString());
}
/**
*
* @param s
* @param start 开始的位置
* @param count 被改变的旧内容数
* @param after 改变后的内容数量
*/
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//这里的s表示改变之前的内容，通常start和count组合，可以在s中读取本次改变字段中被改变的内容。而after表示改变后新的内容的数量。
}
/**
*
* @param str
* @param start 开始位置
* @param before 改变前的内容数量
* @param count 新增数
*/
@Override
public void onTextChanged(CharSequence str, int start, int before, int count) {
//这里的s表示改变之后的内容，通常start和count组合，可以在s中读取本次改变字段中新的内容。而before表示被改变的内容的数量。
if (TextUtils.isEmpty(str.toString().trim())){
//mLv.clearTextFilter();//搜索文本为空时，过滤设置
mJokeFillterAdapter.getFilter().filter("");
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}else {
// search_list.clearTextFilter();
//mLv.setFilterText(str.toString().trim());//设置过滤关键字 会带上一个局域屏幕中心的搜索文本提示
mJokeFillterAdapter.getFilter().filter(str.toString().trim()); // 不会带上一个局域屏幕中心的搜索文本提示
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}
}
}
}
.
.
嗯代码看完了,本来也就完了。但是我们来小小修改一下，搜索过滤用setFilterText试试
@Override
public void onTextChanged(CharSequence str, int start, int before, int count) {
//这里的s表示改变之后的内容，通常start和count组合，可以在s中读取本次改变字段中新的内容。而before表示被改变的内容的数量。
if (TextUtils.isEmpty(str.toString().trim())){
mLv.clearTextFilter();//搜索文本为空时，过滤设置
//mJokeFillterAdapter.getFilter().filter("");
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}else {
// search_list.clearTextFilter();
mLv.setFilterText(str.toString().trim());//设置过滤关键字 会带上一个局域屏幕中心的搜索文本提示
//mJokeFillterAdapter.getFilter().filter(str.toString().trim()); // 不会带上一个局域屏幕中心的搜索文本提示
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}
}
看图
LvFliterTip.gif
是的没错多了个阴影。
七.2、 RecyclerView 与 Filter
使用方式简直和Listview几乎 一 毛 一 样！
step1
在adapter自定义过滤类，继承自Filter，完善两个方法
performFiltering 定义搜索规则。
publishResults 对搜索结果的处理
step2
BaseAdapter 实现 Filterable接口，复写getFilter方法
step3
RecyclerView开启Filter过滤的方法如下：
mRvJokeList.setFilterTouchesWhenObscured(true); // RecyclerView 开启Fliter过滤
(和ListView是不一样的)
step4
在需要设置过滤的地方设置搜索
mRvFilterAdapter.getFilter().filter(mFinalSearch);
（setFilterText的方式用不了，应该有其他代替的，没细究）
还是上代码吧
public class RvFilterAdapter extends RecyclerView.Adapter<RvFilterAdapter.ViewHolder> implements Filterable {
public ArrayList<JokeEntity.ContentlistBean> mDatas = null;
public ArrayList<JokeEntity.ContentlistBean> mCppyDatas = null;
public Context mContext;
private MyFilter mFilter;
// 点击回调
public interface OnItemClickLitener
{
void onItemClick(View view, int position); // 点击
void onItemLongClick(View view, int position); // 长按
}
private OnItemClickLitener mOnItemClickLitener;
public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener)
{
this.mOnItemClickLitener = mOnItemClickLitener;
}
public RvFilterAdapter(Context context, ArrayList<JokeEntity.ContentlistBean> datas) {
this.mDatas = datas;
this.mCppyDatas = datas;
this.mContext = context;
}
//创建新View，被LayoutManager所调用
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_joke_toolbar_search,viewGroup,false);
return new ViewHolder(view);
}
//将数据与界面进行绑定的操作
@Override
public void onBindViewHolder(final ViewHolder viewHolder, int position) {
JokeEntity.ContentlistBean nearPeopleEntity = mDatas.get(position);
viewHolder.mTvJokeTit.setText(nearPeopleEntity.title);
viewHolder.mTvJokeText.setText(nearPeopleEntity.text);
viewHolder.mTvJokeTime.setText(nearPeopleEntity.ct);
// 如果设置了回调，则设置点击事件
if (mOnItemClickLitener != null)
{
viewHolder.mLlItemRoot.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
int pos = viewHolder.getLayoutPosition();
mOnItemClickLitener.onItemClick(viewHolder.mLlItemRoot, pos);
}
});
viewHolder.mLlItemRoot.setOnLongClickListener(new View.OnLongClickListener()
{
@Override
public boolean onLongClick(View v)
{
int pos = viewHolder.getLayoutPosition();
mOnItemClickLitener.onItemLongClick(viewHolder.mLlItemRoot, pos);
return false;
}
});
}
}
//获取数据的数量
@Override
public int getItemCount() {
return mDatas.size();
}
//自定义的ViewHolder，持有每个Item的的所有界面元素
public static class ViewHolder extends RecyclerView.ViewHolder {
private LinearLayout mLlItemRoot;
public TextView mTvJokeTit;
public TextView mTvJokeText;
public TextView mTvJokeTime;
public ViewHolder(View view){
super(view);
mLlItemRoot = (LinearLayout) view.findViewById(R.id.mLlItemRoot);
mTvJokeTit = (TextView) view.findViewById(R.id.mTvJokeTit);
mTvJokeText = (TextView) view.findViewById(R.id.mTvJokeText);
mTvJokeTime = (TextView) view.findViewById(R.id.mTvJokeTime);
}
}
//当ListView调用setTextFilter()方法的时候，便会调用该方法
@Override
public Filter getFilter() {
if (mFilter ==null){
mFilter = new RvFilterAdapter.MyFilter();
}
return mFilter;
}
class MyFilter extends Filter {
//我们在performFiltering(CharSequence charSequence)这个方法中定义过滤规则
@Override
protected FilterResults performFiltering(CharSequence charSequence) {
FilterResults result = new FilterResults();
List<JokeEntity.ContentlistBean> tempList ; // temp中间集合
if (TextUtils.isEmpty(charSequence)){//当过滤的关键字为空的时候，我们则显示所有的数据
tempList = mCppyDatas;
}else {//否则把符合条件的数据对象添加到集合中
tempList = new ArrayList<>();
for (JokeEntity.ContentlistBean recomend:mCppyDatas){
if (recomend.text.contains(charSequence)||recomend.title.contains(charSequence)||recomend.ct.contains(charSequence)){
Log.d(TAG,"performFiltering:"+recomend.toString());
tempList.add(recomend);
}
}
}
result.values = tempList; //符合搜索的结果的数据集合
result.count = tempList.size();//符合搜索的结果的数据个数
return result;
}
//在publishResults方法中告诉适配器更新界面
@Override
protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
mDatas = (ArrayList<JokeEntity.ContentlistBean>)filterResults.values;
Log.d(TAG,"publishResults:"+filterResults.count);
if (filterResults.count>0){
notifyDataSetChanged();//通知数据发生了改变
Log.d(TAG,"publishResults:notifyDataSetChanged");
}else {
//notifyDataSetInvalidated();//通知数据失效
Log.d(TAG,"publishResults:notifyDataSetInvalidated");
}
}
}
}
.
.
Activity的代码就上一小部分就好，其实跟Lv的方式没什么区别，只是少了一种方式。
class DiySerachWatch implements TextWatcher {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
mFinalSearch = s.toString().trim();
if (TextUtils.isEmpty(mFinalSearch)){
// 搜索
mRvFilterAdapter.getFilter().filter("");
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}else {
mRvFilterAdapter.getFilter().filter(mFinalSearch);
mHandler.sendEmptyMessage(MSG_UPDATE_SEARCH_RESULT);
}
}
public void afterTextChanged(Editable s) {
}
}
图也不贴了，很上面的Diy搜索很类似。
其实搜索大家肯定都有自己的方式，方式略low，权当练手Toolbar，不写易忘，姑且如此吧。
还有可以练手完善的地方，比如搜索的时候其实应该用拼音进行模糊搜索。
有空时再补上拼音模糊搜索，哈哈哈。
本较拖沓，见谅！
本篇完。
