Android实现搜索保存历史记录功能

概述本文实例为大家分享了Android搜索保存历史记录功能，供大家参考，具体内容如下

本文实例为大家分享了AndroID搜索保存历史记录功能，供大家参考，具体内容如下

要点：就是缓存输入的内容到 本地 下面就是实现保存 搜索内容到本地 和 清空本地历史的方法

//保存搜索内容到本地 public voID save() {   String text = mKeywordEt.getText().toString();   String oldText = mSharePreference.getString(SEARCH_HISTORY,"");   StringBuilder builder = new StringBuilder(text);   builder.append("," + oldText);   if (!TextUtils.isEmpty(text) && !oldText.contains(text + ",")) {     SharedPreferences.Editor myEditor = mSharePreference.edit();     myEditor.putString(SEARCH_HISTORY,builder.toString());     myEditor.commit();   }   updateData(); }     //清空本地历史 public voID cleanHistory() {   SharedPreferences.Editor editor = mSharePreference.edit();   editor.clear();   editor.commit();   updateData();   mSearchHistoryLl.setVisibility(VIEw.GONE);   Singletoast.show(this,getString(R.string.clear_history_success),Toast.LENGTH_SHORT); } 

activity

import androID.content.SharedPreferences; import androID.os.Bundle; import androID.text.Editable; import androID.text.TextUtils; import androID.text.TextWatcher; import androID.vIEw.VIEw; import androID.Widget.AdapterVIEw; import androID.Widget.ArrayAdapter; import androID.Widget.EditText; import androID.Widget.ImageVIEw; import androID.Widget.linearLayout; import androID.Widget.ListVIEw; import androID.Widget.TextVIEw; import androID.Widget.Toast;   import com.ccvIDeo.R; import com.yizhibo.vIDeo.adapter.SearchAdapter; import com.yizhibo.vIDeo.app.YZBApplication; import com.yizhibo.vIDeo.base.BaseListActivity; import com.yizhibo.vIDeo.utils.Constants; import com.yizhibo.vIDeo.utils.Singletoast; import com.yizhibo.vIDeo.utils.Utils;   public class SearchListActivity extends BaseListActivity implements VIEw.OnClickListener {   public static final String EXTRA_KEY_TYPE = "extra_key_type";   private static final String PRE_SEARCH_HISTORY = "pre_search_history";   private static final String SEARCH_HISTORY = "search_history";     private EditText mKeywordEt;   private TextVIEw mOperationTv;   private ArrayAdapter<String> mArrAdapter;   private SharedPreferences mSharePreference;     private linearLayout mSearchHistoryLl;    private List<String> mHistoryKeywords;   private ListVIEw mListVIEw;   @OverrIDe   protected voID onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     mSharePreference = YZBApplication.getApp().getSharedPreferences(PRE_SEARCH_HISTORY,0);     setContentVIEw(R.layout.activity_search_List);     mKeywordEt = (EditText) findVIEwByID(R.ID.tab_bar_keyword_et); mHistoryKeywords = new ArrayList<String>();      mKeywordEt.addTextChangedListener(new TextWatcher() {       @OverrIDe       public voID beforeTextChanged(CharSequence s,int start,int count,int after) {         }         @OverrIDe       public voID onTextChanged(CharSequence s,int before,int count) {         if (s.length() == 0) {           mAdapter.clear();           mAdapter.notifyDataSetChanged();           mOperationTv.setText(R.string.cancel);           mEmptyVIEw.hIDe();           clearKeywordiv.setVisibility(VIEw.GONE);           if (mHistoryKeywords.size() > 0) {             mSearchHistoryLl.setVisibility(VIEw.VISIBLE);           } else {             mSearchHistoryLl.setVisibility(VIEw.GONE);           }         } else {           mSearchHistoryLl.setVisibility(VIEw.GONE);           mOperationTv.setText(R.string.search);           clearKeywordiv.setVisibility(VIEw.VISIBLE);         }       }         @OverrIDe       public voID afterTextChanged(Editable s) {         }     });     mKeywordEt.requestFocus();     mOperationTv = (TextVIEw) findVIEwByID(R.ID.tab_bar_cancel_tv);     mOperationTv.setonClickListener(new VIEw.OnClickListener() {       @OverrIDe       public voID onClick(VIEw v) {         if (mKeywordEt.getText().length() > 0) {           hIDeinputMethod();           save();         } else {           finish();         }       }     });     initSearchHistory();        }    public voID initSearchHistory() {     mSearchHistoryLl = (linearLayout) findVIEwByID(R.ID.search_history_ll);     ListVIEw ListVIEw = (ListVIEw) findVIEwByID(R.ID.search_history_lv);     findVIEwByID(R.ID.clear_history_btn).setonClickListener(this);     String history = mPref.getString(Preferences.KEY_SEARCH_HISTORY_KEYWORD);     if (!TextUtils.isEmpty(history)){       List<String> List = new ArrayList<String>();       for(Object o : history.split(",")) {         List.add((String)o);       }       mHistoryKeywords = List;     }     if (mHistoryKeywords.size() > 0) {       mSearchHistoryLl.setVisibility(VIEw.VISIBLE);     } else {       mSearchHistoryLl.setVisibility(VIEw.GONE);     }     mArrAdapter = new ArrayAdapter<String>(this,R.layout.item_search_history,mHistoryKeywords);     ListVIEw.setAdapter(mArrAdapter);     ListVIEw.setonItemClickListener(new AdapterVIEw.OnItemClickListener() {       @OverrIDe       public voID onItemClick(AdapterVIEw<?> adapterVIEw,VIEw vIEw,int i,long l) {         mKeywordEt.setText(mHistoryKeywords.get(i));         mSearchHistoryLl.setVisibility(VIEw.GONE);       }     });     mArrAdapter.notifyDataSetChanged();   }    public voID save() {     String text = mKeywordEt.getText().toString();     String oldText = mPref.getString(Preferences.KEY_SEARCH_HISTORY_KEYWORD);     if (!TextUtils.isEmpty(text) && !oldText.contains(text)) {       mPref.putString(Preferences.KEY_SEARCH_HISTORY_KEYWORD,text + "," + oldText);       mHistoryKeywords.add(0,text);     }     mArrAdapter.notifyDataSetChanged();   }    public voID cleanHistory() {     mPref.remove(Preferences.KEY_SEARCH_HISTORY_KEYWORD);     mHistoryKeywords.clear();     mArrAdapter.notifyDataSetChanged();     mSearchHistoryLl.setVisibility(VIEw.GONE);     Singletoast.show(this,Toast.LENGTH_SHORT);   }   public voID updateData(){     String history = mSharePreference.getString(SEARCH_HISTORY,"");     mHistoryArr = history.split(",");     mArrAdapter = new ArrayAdapter<String>(this,R.layout.activity_searchhistory,mHistoryArr);     mListVIEw.setAdapter(mArrAdapter);     mArrAdapter.notifyDataSetChanged();   }     @OverrIDe   public voID onClick(VIEw vIEw) {     switch (vIEw.getID()) {       case R.ID.clear_history_btn:         cleanHistory();         break;     }   } } 

下拉d出layout布局

<linearLayout     androID:ID="@+ID/search_history_ll"     androID:orIEntation="vertical"     androID:layout_wIDth="match_parent"     androID:layout_below="@ID/global_search_action_bar_rl"     androID:layout_height="wrap_content">     <TextVIEw       androID:ID="@+ID/contentTextVIEw"       androID:layout_wIDth="wrap_content"       androID:layout_height="wrap_content"       androID:textSize="@dimen/text_size_Title_h2"       androID:text="@string/search_history"       androID:paddingleft="10dp"       androID:textcolor="@color/text_gray"/>     <ListVIEw       androID:ID="@+ID/search_history_lv"       androID:layout_wIDth="match_parent"       androID:layout_height="wrap_content"       androID:cachecolorHint="@androID:color/transparent"       androID:ListSelector="@drawable/List_item_selector">     </ListVIEw>     <button       androID:ID="@+ID/clear_history_btn"       androID:layout_wIDth="210dp"       androID:layout_height="@dimen/button_common_height"       androID:layout_below="@ID/rise_crash_ll"       androID:layout_margintop="5dp"       androID:textcolor="@color/text_btn_selector"       androID:layout_gravity="center"       androID:textSize="@dimen/text_size_Title_h2"       androID:layout_centerHorizontal="true"       androID:text="@string/clear_search_history"       androID:background="@drawable/round_btn_selector"       />   </linearLayout> 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

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