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搜索保存历史记录功能

 2017/5/10 5:31:06  ganchuanpu  程序员俱乐部  我要评论(0)
  • 摘要: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publicvoidsave(){Stringtext=mKeywordEt.getText().toString();StringoldText=mSharePreference.getString(SEARCH_HISTORY,"");StringBuilderbuilder=newStringBuilder(text);builder.append(","+oldText);if(
  • 标签:功能

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

class="brush:java;gutter:true;">//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 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<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, getString(R.string.clear_history_success), 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;  
        }  
    }  
}  

 下拉弹出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"  
            style="?android:buttonBarButtonStyle"/>  
    </LinearLayout>  

  

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