搜索欄由於過濾而改變位置

Question

我一直在做一個項目，其中我有一個主要活動，其中我有listview和一個搜索欄（編輯文本欄），並且我的listview的onitemclicklistener將行位置傳遞給具有webview和webview的活動將html頁面打開到它們各自的位置。我也有我的存儲列表視圖項arrays.xml

我的問題開始這裏 - 我的列表視圖工作文件和行即可打開相應的活動（當我不使用搜索欄，只是滾動和點擊一行。）

但是當我使用搜索欄來搜索一個項目（html頁面）例如讓它成爲「c」，我點擊它，listview DoesNot打開正確的html頁面！希望這是明確的。我有大約數千個html文件，因此在java文件中記錄所有位置是不可能的，因爲堆大小有限。我在這裏找到了一個解決方案After filter a listview,how can I obtain the position of the first listview? 但我不知道如何在代碼中實現這一點。

here is my main activity 

package com.Sample.htmlOpener; 

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ArrayAdapter; 
import android.widget.EditText; 
import android.widget.ListView; 

public class MainActivity extends Activity { 
private ListView list1; 
private String array[] ; 
EditText inputSearch; 
ArrayAdapter<String> adapter; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 
inputSearch = (EditText) findViewById(R.id.inputSearch); 
list1 = (ListView) findViewById(R.id.ListView01); 
array = getResources().getStringArray(R.array.myArray); 
adapter =new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, array); 
list1.setAdapter(adapter); 
inputSearch.addTextChangedListener(new TextWatcher() { 

@Override 
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
    // When user changed the Text 
    MainActivity.this.adapter.getFilter().filter(cs); 
} 

@Override 
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
int arg3) { 
    // TODO Auto-generated method stub 

} 

@Override 
public void afterTextChanged(Editable arg0) { 
    // TODO Auto-generated method stub       
} 
}); 

list1.setOnItemClickListener(new OnItemClickListener() { 
public void onItemClick(AdapterView<?> parent, View view, 
    int position, long id) { 
    Intent myIntent = new Intent(MainActivity.this,WebViewActivity.class); 
    myIntent.putExtra("key",position); 
    startActivity(myIntent); 
} 
}); 
} 

}

這裏是我的WebView活動

import android.app.Activity; 
import android.graphics.Bitmap; 
import android.os.Bundle; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 


public class WebViewActivity extends Activity { 
WebView web; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_web_view); 
    web = (WebView) findViewById(R.id.webView1); 
    web.setWebViewClient(new myWebClient()); 
    web.getSettings().setJavaScriptEnabled(true); 
    int pos = getIntent().getIntExtra("key",0); 
    if(pos==0) 
    { 
     web.loadUrl("file:///android_asset/file.html"); 
    } 
    else 
    { 
     web.loadUrl("file:///android_asset/file" + pos + ".html"); 
    } 
    // similarly for 4 and 5 and so on. 
} 

public class myWebClient extends WebViewClient 
{ 
    @Override 
    public void onPageStarted(WebView view, String url, Bitmap favicon) { 
     // TODO Auto-generated method stub 
     super.onPageStarted(view, url, favicon); 
    } 

    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     // TODO Auto-generated method stub 

     view.loadUrl(url); 
     return true; 

    } 
    @Override 
    public void onReceivedError(WebView view, int errorCode, 
      String description, String failingUrl) { 
    } 
    @Override 
    public void onPageFinished(WebView view, String url) { 
     // TODO Auto-generated method stub 
     super.onPageFinished(view, url); 

    } 
} 
} 

Answer 1

public class MainActivity extends Activity { 

    // List view 
    private ListView lv; 

    // Listview Adapter 
    ArrayAdapter<String> adapter; 

    // Search EditText 
    EditText inputSearch; 


    String[] productsList; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     productsList = getResources().getStringArray(R.array.list); 


     lv = (ListView) findViewById(R.id.list_view); 
     inputSearch = (EditText) findViewById(R.id.inputSearch); 

     // Adding items to listview 
     adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, getResources().getStringArray(R.array.list)); 
     lv.setAdapter(adapter); 

     /** 
     * Enabling Search Filter 
     * */ 
     inputSearch.addTextChangedListener(new TextWatcher() { 

      @Override 
      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
       // When user changed the Text 
       MainActivity.this.adapter.getFilter().filter(cs); 
      } 

      @Override 
      public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
              int arg3) { 
       // TODO Auto-generated method stub 

      } 

      @Override 
      public void afterTextChanged(Editable arg0) { 
       // TODO Auto-generated method stub       
      } 
     }); 

     lv.setOnItemClickListener(new OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 

       String productName = adapter.getItem(position); 

       for (int i=0;i<productsList.length;i++){ 

        String product = productsList[i]; 

        if (product.equals(productName)){ 
         Toast.makeText(MainActivity.this, "Original Position of Item in listview "+i, Toast.LENGTH_SHORT).show(); 
         break; 
        }     
       } 
      } 

     }); 
    } 

} 

參見：http://www.androidhive.info/2012/09/android-adding-search-functionality-to-listview/

Answer 2

正如你說你有上千項，以便檢查一個匹配不一個不錯的選擇。你可以做的是，你可以創建一個自定義列表適配器併爲每個項目設置一個標籤。然後在listview上點擊你可以得到這個標籤並使用它。