Android中使用Filterable实现匹配搜索

接上文，上文地址：https://blog.csdn.net/JiYaRuo/article/details/82285711

GitHup地址：https://github.com/JiYaRuo/LocalVagueSearchData

1. SearchNeighbourActivity类

/** * Created by JiYaRuo. * 好友搜索页面 */ public class SearchActivity extends BaseActivity implements View.OnClickListener{ //返回按钮 private ImageView ivBack; //搜索文本 private TextView btnSearch; //搜索框 private EditText ev_search_friend; //展示所搜索出来好友列表的rv private RecyclerView rv_search_user; //总的好友列表集合 private List<User> mNeighbourFriendItemTotalList; //搜索出来的好友列表集合 private List<User> mSearchNeighbourFriendItemList = new ArrayList<>(); //搜索列表rv适配器 private SearchNeighbourRvAdapter searchNeighbourRvAdapter; //输入法管理器 private InputMethodManager inputMethodManager; @Override protected void initUI() { ScreenUtils.setStatusBarBackground(this); setContentView(R.layout.activity_search); try { //获取所有联系人数据源集合 mNeighbourFriendItemTotalList = FriendSListActivity.mDatas; //初始化输入法管理器 inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE); //初始化控件 initView(); } catch (Exception e) { } } /**初始化控件*/ private void initView() { ivBack = findViewById(R.id.iv_back); btnSearch = findViewById(R.id.btn_search_cancle); ivBack.setOnClickListener(this); btnSearch.setOnClickListener(this); ev_search_friend = findViewById(R.id.ev_search_friend); rv_search_user=findViewById(R.id.rv_search_user); setAdapter(); ev_search_friend.setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if(!NetUtils.isConnected(SearchNeighbourActivity.this)){ ToastUtils.show("当前网络连接已经断开，请检查您的网络设置"); return false; } if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_DOWN) { //先隐藏键盘 if (inputMethodManager.isActive()) { inputMethodManager.hideSoftInputFromWindow(ev_search_friend.getApplicationWindowToken(), 0); } searchNeighbourRvAdapter.getFilter().filter(ev_search_friend.getText().toString()); // 当数据改变时，调用过滤器； } //记得返回false return false; } }); ev_search_friend.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) { searchNeighbourRvAdapter.getFilter().filter(s); // 当数据改变时，调用过滤器； } @Override public void afterTextChanged(Editable s) { } }); } /**设置适配器*/ private void setAdapter() { LinearLayoutManager manager = new LinearLayoutManager(this); manager.setOrientation(LinearLayoutManager.VERTICAL); rv_search_user.setLayoutManager(manager); searchNeighbourRvAdapter = new SearchNeighbourRvAdapter(R.layout.letter_list, mSearchNeighbourFriendItemList, mNeighbourFriendItemTotalList); rv_search_user.setAdapter(searchNeighbourRvAdapter); //final View view = LayoutInflater.from(this).inflate(R.layout.empty_search_friend_laayout, null); //view.setLayoutParams(new RecyclerView.LayoutParams(MATCH_PARENT,MATCH_PARENT)); //searchNeighbourRvAdapter.setEmptyView(view); searchNeighbourRvAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() { @Override public void onItemClick(BaseQuickAdapter adapter, View view, int position) { } } }); } @Override protected void onPause() { super.onPause(); overridePendingTransition(0,0); } @Override public void onClick(View v) { switch (v.getId()){ case R.id.iv_back: finish(); break; case R.id.btn_search_cancle: finish(); break; } }

2.布局页面：activity_search

<?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="match_parent" android:orientation="vertical"> <View android:background="@color/white" android:layout_width="match_parent" android:layout_height="@dimen/dp_20"> </View> <RelativeLayout android:gravity="center_vertical" android:background="@color/white" android:layout_width="match_parent" android:layout_height="@dimen/dp_52"> <ImageView android:id="@+id/iv_back" android:layout_width="wrap_content" android:layout_height="match_parent" android:paddingLeft="@dimen/dp_4" android:paddingRight="@dimen/dp_4" android:src="@mipmap/icon_back" /> <EditText android:id="@+id/ev_search_friend" android:paddingLeft="@dimen/dp_10" android:drawablePadding="@dimen/dp_5" android:hint="搜索" android:inputType="text" android:layout_centerVertical="true" android:textSize="@dimen/sp_14" android:gravity="center_vertical" android:maxLines="1" android:drawableLeft="@mipmap/search_goods" android:layout_marginLeft="@dimen/dp_37" android:layout_marginRight="@dimen/dp_53" android:paddingTop="@dimen/dp_4" android:paddingBottom="@dimen/dp_4" android:background="@drawable/search_goods" android:layout_width="match_parent" android:layout_height="wrap_content" /> <TextView android:id="@+id/btn_search_cancle" android:text="取消" android:layout_alignParentRight="true" android:layout_marginRight="@dimen/dp_10" android:gravity="center_vertical" android:textColor="#6d6d6d" android:textSize="@dimen/sp_14" android:layout_width="wrap_content" android:layout_height="match_parent" /> </RelativeLayout> <android.support.v7.widget.RecyclerView android:id="@+id/rv_search_user" android:layout_width="match_parent" android:layout_height="match_parent"> </android.support.v7.widget.RecyclerView> </LinearLayout>

3.搜索的适配器SearchNeighbourRvAdapter

/** * Created by JiYaRuo on 2018/8/8. */ public class SearchNeighbourRvAdapter extends BaseQuickAdapter<NeighbourFriendItem, BaseViewHolder> implements Filterable { private List<User> mNeighbourFriendItemTotalList = new ArrayList<>();//总列表集合 private List<User> mSearchNeighbourFriendItemList = new ArrayList<>();//搜索出来列表集合 private SearchUserFilter searchUserFilter;//搜索过滤器 private boolean ifNotifyData = false; int searchStartIndex; int searchLastIndex; public SearchNeighbourRvAdapter(int layoutResId, @Nullable List<User> searchNeighbourFriendItemList, List<User> totalNeighbourFriendItemList) { super(layoutResId, searchNeighbourFriendItemList); this.mSearchNeighbourFriendItemList = searchNeighbourFriendItemList; this.mNeighbourFriendItemTotalList = totalNeighbourFriendItemList; } @Override protected void convert(BaseViewHolder helper, User item) { try { if (ifNotifyData) { helper.setText(R.id.tv_user_name, item.getUserName()); helper.setText(R.id.tv_user_sign, item.getUserSign()); Glide.with(mContext).load(item.getUserImg()).into((ImageView) helper.getView(R.id.iv_user_img)); } catch (Exception e) { e.printStackTrace(); } } @Override public Filter getFilter() { if (searchUserFilter == null) { searchUserFilter = new SearchUserFilter(); } return searchUserFilter; } class SearchUserFilter extends Filter { @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults results = new FilterResults(); //需要监听的字符 if (constraint == null || constraint.length() == 0) { mSearchNeighbourFriendItemList.clear(); results.values = mSearchNeighbourFriendItemList; results.count = mSearchNeighbourFriendItemList.size(); } else { mSearchNeighbourFriendItemList.clear(); //需要过滤的总集合 for (User p : mNeighbourFriendItemTotalList) { if (p.getUserName().contains(constraint)) { mSearchNeighbourFriendItemList.add(p); } } results.values = mSearchNeighbourFriendItemList; results.count = mSearchNeighbourFriendItemList.size(); } return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { mSearchNeighbourFriendItemList = (List<NeighbourFriendItem>) results.values; ifNotifyData = true; for (int i = 0; i < mSearchNeighbourFriendItemList.size(); i++) { String userName = mSearchNeighbourFriendItemList.get(i).getUserName(); searchStartIndex = userName.indexOf(constraint.toString()); searchLastIndex = searchStartIndex + constraint.length(); } notifyDataSetChanged(); } }

4.搜索rv的item布局：letter_list

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:gravity="center_vertical" android:background="#fff" android:paddingLeft="12dp" android:paddingRight="12dp" android:layout_height="@dimen/dp_63"> <ImageView android:id="@+id/iv_user_img" android:layout_width="@dimen/dp_48" android:layout_height="@dimen/dp_48" /> <LinearLayout android:orientation="vertical" android:paddingTop="@dimen/dp_8" android:paddingBottom="@dimen/dp_8" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/tv_user_name" android:layout_marginLeft="10dp" android:textColor="#2f2f2f" android:textSize="@dimen/sp_16" android:maxLines="1" android:ellipsize="end" android:gravity="center_vertical" android:layout_weight="1.2" android:layout_width="wrap_content" android:layout_height="@dimen/dp_0" /> <TextView android:id="@+id/tv_user_sign" android:maxLines="1" android:ellipsize="end" android:textColor="#9e9e9e" android:textSize="@dimen/sp_14" android:layout_marginLeft="10dp" android:gravity="center_vertical" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="@dimen/dp_0" /> </LinearLayout> </LinearLayout>