在RadioGroup中獲取錯誤

Question

我試圖動態地實現一個Radio Group，但我收到一個錯誤消息，說「孩子已經有一個父母先調用removeView（）」。下面是我的代碼：

RadioGroup rg = new RadioGroup(getContext()); 
     RadioButton[] allSongsRadio = new RadioButton[countOfAllSongs]; 

     ArrayList<String> allSongsInMap = new ArrayList<>(countOfAllSongs); 
     for(final String eachMood : allSongs.keySet()) { 
      for(String eachSong : allSongs.get(eachMood)) { 
       allSongsInMap.add(eachMood+" : "+eachSong); 
      } 
     } 

     for(int i=0;i<allSongsInMap.size();i++){ 
      final String eachSong = allSongsInMap.get(i); 
      LinearLayout playButtonAndSeekBar = new LinearLayout(getContext()); 
      final FloatingActionButton playButton = new FloatingActionButton(getContext()); 
      playButton.setBackgroundTintList(ColorStateList.valueOf(Color.WHITE)); 
      playButton.setImageResource(R.drawable.play); 
      playButton.setSize(FloatingActionButton.SIZE_MINI); 
      playButton.setId(++playButtonId); 
      SeekBar seekBarForEachSong = new SeekBar(getContext()); 
      layoutDetails = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
      layoutDetails.rightMargin = 50; 
      seekBarForEachSong.setLayoutParams(layoutDetails); 
      allSongsRadio[i] = new RadioButton(getContext()); 
      playButtonAndSeekBar.addView(allSongsRadio[i]); 
      playButtonAndSeekBar.addView(playButton); 
      playButtonAndSeekBar.addView(seekBarForEachSong); 

      eachSongPanel.addView(playButtonAndSeekBar); 
      rg.addView(allSongsRadio[i]); 
      dialogContainer.addView(eachSongPanel); 
     } 
     dialogContainer.addView(rg); 

    } 

需要幫助的人。

Answer 1

您看到這個錯誤，因爲你要添加的同一部件到兩個不同的ViewGroup未在Android允許的（每個元素都屬於一個ViewGroup中家長），還有就是你正在這樣做：

首先你在這裏添加的單選按鈕：

playButtonAndSeekBar.addView(allSongsRadio[i]); 

然後將其添加到電臺組：

rg.addView(allSongsRadio[i]); 

此時allSongsRadio[i]屬於playButtonAndSeekBar，您無法將其添加到另一個ViewGroup。

要更正您的代碼，請將按鈕添加到收音機組，然後最後將整個收音機組添加到playButtonAndSeekBar，以獲取您所需的設計。