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Android Filtered ListView(Android Filtered ListView)

 我从xml文件中获取listview的值。 这些是我的java和xml代码： 
 

package com.gazi.tezproje;

import android.app.ActionBar;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.Toast;

public class verbs extends Activity {

public boolean onCreateOptionsMenu(Menu menu) {
    ActionBar bar=getActionBar(); 
    bar.setDisplayHomeAsUpEnabled(true);
    MenuInflater menu1 = getMenuInflater();
    menu1.inflate(R.menu.info, menu);
    return super.onCreateOptionsMenu(menu);
      }

public boolean onOptionsItemSelected(MenuItem item) {

       switch (item.getItemId()) {
             case R.id.menuinfo:
                 Toast.makeText(getApplicationContext(),getString(R.string.verbs), Toast.LENGTH_LONG).show();
                  break; 
             case android.R.id.home:
                 finish();
                  break; }
    return false;
    }


private ListView vlist;
EditText ara;
private String [] fiilliste;
ArrayAdapter<String> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.verbs);

        fiilliste=getResources().getStringArray(R.array.fiiller);
        vlist=(ListView)findViewById(R.id.listView1);
        adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, fiilliste);
        vlist.setAdapter(adapter);
        ara = (EditText) findViewById(R.id.editText1);
        vlist.setTextFilterEnabled(true);

vlist.setOnItemClickListener(new OnItemClickListener(){

    public void onItemClick(AdapterView<?> a,View v,int position,long id){          




    }


 }); 

 ara.addTextChangedListener(new TextWatcher(){

      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
          // When user changed the Text

         verbs.this.adapter.getFilter().filter(cs); 

      }

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



    }

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

    }
 });

}}

 

 XML文件 
 

<?xml version="1.0" encoding="utf-8"?>
<resources>
     <string-array name="fiiller">
        <item>A</item>
        <item>Affetmek</item>
        <item>Almak</item>
        <item>Anlamak</item>
        <item>Anlaşmak</item>
        <item>Anlatmak</item>
        <item>Ayrılmak</item>
        <item>B</item>
        <item>Bakmak</item>
        <item>Başlamak</item>
    </string-array>
</resources>

 

 例如; 当我点击列表视图“Bakmak”时，我想显示带有吐司的文本，即使过滤了listview。 而对于listview的其他项目，另一个吐司。 我不能这样做，因为如你所知过滤后，项目的位置会发生变化。 
 

 我真的需要你的想法和帮助！ 谢谢！ 

I take values of listview from an xml file. These are my java and xml codes:
 

package com.gazi.tezproje;

import android.app.ActionBar;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.Toast;

public class verbs extends Activity {

public boolean onCreateOptionsMenu(Menu menu) {
    ActionBar bar=getActionBar(); 
    bar.setDisplayHomeAsUpEnabled(true);
    MenuInflater menu1 = getMenuInflater();
    menu1.inflate(R.menu.info, menu);
    return super.onCreateOptionsMenu(menu);
      }

public boolean onOptionsItemSelected(MenuItem item) {

       switch (item.getItemId()) {
             case R.id.menuinfo:
                 Toast.makeText(getApplicationContext(),getString(R.string.verbs), Toast.LENGTH_LONG).show();
                  break; 
             case android.R.id.home:
                 finish();
                  break; }
    return false;
    }


private ListView vlist;
EditText ara;
private String [] fiilliste;
ArrayAdapter<String> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.verbs);

        fiilliste=getResources().getStringArray(R.array.fiiller);
        vlist=(ListView)findViewById(R.id.listView1);
        adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, fiilliste);
        vlist.setAdapter(adapter);
        ara = (EditText) findViewById(R.id.editText1);
        vlist.setTextFilterEnabled(true);

vlist.setOnItemClickListener(new OnItemClickListener(){

    public void onItemClick(AdapterView<?> a,View v,int position,long id){          




    }


 }); 

 ara.addTextChangedListener(new TextWatcher(){

      public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
          // When user changed the Text

         verbs.this.adapter.getFilter().filter(cs); 

      }

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



    }

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

    }
 });

}}

 

XML File
 

<?xml version="1.0" encoding="utf-8"?>
<resources>
     <string-array name="fiiller">
        <item>A</item>
        <item>Affetmek</item>
        <item>Almak</item>
        <item>Anlamak</item>
        <item>Anlaşmak</item>
        <item>Anlatmak</item>
        <item>Ayrılmak</item>
        <item>B</item>
        <item>Bakmak</item>
        <item>Başlamak</item>
    </string-array>
</resources>

 

For example; when I clicked on listview which is "Bakmak", I wanna show a text with toast, even when listview is filtered. And for other item of listview, another toast. I couldn't do it, because after filtering as you know, positions of items change. 
 

I really need your ideas and help! Thank you! 

原文：https://stackoverflow.com/questions/19877747
更新时间：2022-08-31 20:08

最满意答案

 正如Lukas所指出的，您需要在方法结束时返回UITableViewCell 。 
 

 事实上，你发布的内容甚至不应该编译，所以我想知道你是否错误地发布了示例代码。 
 

 首先尝试并实际返回单元格，将代码更新为： 
 

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell!
{
    let cell = UITableViewCell(style:UITableViewCellStyle.Subtitle,reuseIdentifier:"douban")
    let rowData:NSDictionary = self.tableData[indexPath.row] as! NSDictionary
    cell.textLabel!.text = "hehehehe"//rowData["title"] as! String
    cell.detailTextLabel!.text = "adasdasda"//rowData["artist"] as! String

    // YOU ARE MISSING THIS LINE
    return cell
}

 

 还要确保正确设置了UITableViewDatasource ，并确保所需的方法正常运行。 具体来说， numberOfRowsInSection和numberOfSectionsInTableView需要返回大于0的值。（在您发布的代码中，您缺少numberOfSectionsInTableView ） 

As Lukas points out, you need to return the UITableViewCell at the end of the method.
 

In fact, what you posted shouldn't even compile, so I'm wondering if you posted your sample code incorrectly.
 

The first thing to try, and actually return the cell, update your code to:
 

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell!
{
    let cell = UITableViewCell(style:UITableViewCellStyle.Subtitle,reuseIdentifier:"douban")
    let rowData:NSDictionary = self.tableData[indexPath.row] as! NSDictionary
    cell.textLabel!.text = "hehehehe"//rowData["title"] as! String
    cell.detailTextLabel!.text = "adasdasda"//rowData["artist"] as! String

    // YOU ARE MISSING THIS LINE
    return cell
}

 

Also ensure that you UITableViewDatasource is set properly, and that the required methods are functioning. Specifically, both numberOfRowsInSection and numberOfSectionsInTableView need to be returning values greater than 0. (In the code you posted, you are missing numberOfSectionsInTableView)

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