java– 从适配器内部调用notifyDataSetChanged失败

概述我有一个适配器(扩展BaseAdapter),我试图调用notifyDataSetChanged(),但它不起作用.我相信notifyDataSetChanged()实际上是被调用的,基于使用Eclipse调试器进入它.但是,它不会调用getView().我的适配器下面的数据正在改变,正如它应该的那样.我在适配器中有一个方法updateSettings()

我有一个适配器(扩展BaseAdapter),我试图调用notifyDataSetChanged(),但它不起作用.我相信notifyDataSetChanged()实际上是被调用的,基于使用Eclipse调试器进入它.但是,它不会调用getVIEw().我的适配器下面的数据正在改变,正如它应该的那样.我在适配器中有一个方法updateSettings(),用于更新适配器底层的数据.如果我从ListVIEwActivity调用updateSettings(),我没有任何问题… notifyDataSetChanged()的行为与我期望的一样.但是当我从适配器中调用updateSettings()时,notifyDataSetChanged()不起作用.我是否尝试从适配器中调用notifyDataSetChanged()来做一些根本错误的事情？这是我的一些代码：

public VIEw getVIEw( int position, VIEw convertVIEw, VIEwGroup parent ){    Log.d( CLASS_name, "Entered getVIEw()" );    VIEw row = convertVIEw;    _settingVIEwHolder = new PhonesettingVIEwHolder();    final int index = position;    /* If this is the first time the List is being built, get all of the UI Widgets     * and store them in a PhonesettingVIEwHolder object for future use on     * subsequent writing of the List.     */    if( row == null )    {        LayoutInflater inflater = (LayoutInflater)_context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );        row = inflater.inflate( R.layout.phone_List_complex, null, false );         _settingVIEwHolder.txtSettingname = (TextVIEw)row.findVIEwByID( R.ID.phone_List_complex_Title );        _settingVIEwHolder.txtSettingValue = (TextVIEw)row.findVIEwByID( R.ID.phone_List_complex_caption );        _settingVIEwHolder.sbTimeout = (Seekbar)row.findVIEwByID( R.ID.slIDer );        _settingVIEwHolder.txtPercent = (TextVIEw)row.findVIEwByID( R.ID.percent );        _settingVIEwHolder.sbTimeout.setMax( 30 );        _settingVIEwHolder.sbTimeout.setProgress( 1 );        // associate this PhonesettingVIEwHolder object with the row        row.setTag( _settingVIEwHolder );    }    else    {        // get the PhonesettingVIEwHolder object that is associated with this row        _settingVIEwHolder = (PhonesettingVIEwHolder)row.getTag();    }    // get Setting object and store values in PhonesettingVIEwHolder object    final Setting setting = _settings.get( position );    _settingVIEwHolder.txtSettingname.setText( setting.getSettingname() );    Log.d( CLASS_name, "setting.getSettingValue() = " + setting.getSettingValue() );    _settingVIEwHolder.txtSettingValue.setText( setting.getSettingValue() );    /* Event handlers for Seekbar */    _settingVIEwHolder.sbTimeout.setonSeekbarchangelistener( new OnSeekbarchangelistener() {        public voID onProgressChanged( Seekbar seekbar, int progress, boolean isUser )        {            Log.d( CLASS_name, "Entered onProgressChanged()" );            String percent = String.valueOf( progress );            updateSettings( index, percent );        }        public voID onStartTrackingtouch( Seekbar seekbar )        {            // nothing to do here        }        public voID onStopTrackingtouch( Seekbar seekbar )        {            // nothing to do here         }    });    return row;}

在这个块中,我设置了行视图并将事件处理程序附加到Seekbar.我想要发生的是当有人滚动Seekbar时,它会更新它上面的文本.这是我的updateSettings()方法：

    public voID updateSettings( int index, String progress )     {        Log.d( CLASS_name, "Entered updateSettings()" );        Setting setting = new Setting( SETTING_name, progress );        _settings.set( index, setting );        Log.d( CLASS_name,  "Calling notifyDataSetChanged()" );        notifyDataSetChanged();        Log.d( CLASS_name, "Returned from notifyDataSetChanged()" );    }

任何见解都表示赞赏！

谢谢.

解决方法:

只需添加

notifyDataSetChanged()

**在您的适配器内,应用程序将重新加载您的列表.

^^

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