android.widget.SeekBar不能转换为android.widget.TextView

我正在创建一个亮度控制对话框。但是我遇到的问题是，当我把TextView的那么搜索条它会导致这个错误：android.widget.SeekBar不能转换为android.widget.TextView

android.widget.SeekBar cannot be cast to android.widget.TextView

出于某种原因，似乎当.XML定位如下搜索条，然后TextView的工作。

下面是一些代码：

LayoutInflater li_brightness = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE); 
      View v_brightness = li_brightness.inflate(R.layout.options_dialog_brightness, (ViewGroup)findViewById(R.id.ll_brightness_layout)); 
      bright_textView = (TextView)v_brightness.findViewById(R.id.brightness_text); 
      brightBar = (SeekBar)v_brightness.findViewById(R.id.seekbar_brightness); 
      confirm_brightness = (Button)v_brightness.findViewById(R.id.button_brightness); 



      cResolver = getContentResolver(); 

      window = getWindow(); 

      brightBar.setMax(100); 
      brightBar.setProgress(50); 
      brightBar.setKeyProgressIncrement(1); 

      bright_textView.setText("50".toString()); 


      brightBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { 

       public void onStopTrackingTouch(SeekBar seekBar) { 
        // TODO Auto-generated method stub 

       } 

       public void onStartTrackingTouch(SeekBar seekBar) { 
        // TODO Auto-generated method stub 

       } 

       public void onProgressChanged(SeekBar seekBar, int progress, 
         boolean fromUser) { 
        // TODO Auto-generated method stub 
        float BackLightValue = (float)progress/100; 
        if(BackLightValue <= 0){ 
         bright_textView.setText(String.valueOf(BackLightValue)); 
        } 


         WindowManager.LayoutParams layoutParams = getWindow().getAttributes(); 
         layoutParams.screenBrightness = BackLightValue; 
         getWindow().setAttributes(layoutParams); 
       } 
      });

来源

2012-03-05 wesdfgfgd

添加logcat和XML，我认为但不是很确定，由于您的id来自XML布局文件的问题您将Textview的id提供给Seekbar检查它！ – 2012-03-05 14:25:43

尝试清洁您的项目（Project>从Eclipse的清洁或ant clean命令行），并看看是否能清除了你的问题。有时构建系统在R值方面与自身有些不同步，并且这种错误是其中一种症状。

来源

2012-03-05 15:16:38 CommonsWare

你完全正确。出于某种原因，我在没有工作之前尝试过。 – wesdfgfgd 2012-03-05 15:44:36

android.widget.SeekBar不能转换为android.widget.TextView

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