Android实现搜索保存历史记录功能

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 mArrAdapter;   private SharedPreferences mSharePreference;     private LinearLayout mSearchHistoryLl;    private List 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();      mKeywordEt.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) {         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 list = new ArrayList();       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(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, getString(R.string.clear_history_success), Toast.LENGTH_SHORT);   }   public void updateData(){     String history = mSharePreference.getString(SEARCH_HISTORY, "");     mHistoryArr = history.split(",");     mArrAdapter = new ArrayAdapter(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;     }   } }

下拉弹出layout布局

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脚本之家。

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