Android：按下後退按鈕時出現Texttedit輸入丟失

Question

我在列表視圖中有一個EditText，我通過列表適配器填充，我的問題是，每當我在EditText中輸入任何文本並按回按鈕，所有更改都會丟失，但在另一個在其他位置（沒有列表視圖）的EditText一切正常（所有更改都保留），爲什麼發生這種情況，我該如何擺脫這個問題？

的EditText代碼>>

<EditText 
    android:id="@+id/edit_card_list_editText" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="@dimen/editbox_cursor_margin" 
    android:layout_marginRight="@dimen/editbox_cursor_margin" 
    android:layout_marginTop="@dimen/edit_card_list_mid_gap" 
    android:background="@color/white" 
    android:ems="10" 
    android:enabled="true" 
    android:fontFamily="@string/roboto_light_font" 
    android:inputType="textNoSuggestions" 
    android:textSize="@dimen/forty_eight_font" > 

</EditText> 

Listadapter代碼>>

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

    View rowView = convertView; 
    boolean convertViewWasNull = false; 

    if(rowView == null){ 

     rowView = inflator.inflate(R.layout.edit_card_list_layout, parent, false); 
     convertViewWasNull = true; 

    } 

    TextView titleview = (TextView) rowView.findViewById(R.id.edit_card_list_title); 
    EditText detailview = (EditText) rowView.findViewById(R.id.edit_card_list_editText); 

    if(title.get(position) != null){ 
     titleview.setText(title.get(position).toString()); 

     } 
    if(detail.get(position) != null){ 
     detailview.setText(detail.get(position).toString()); 
     }else{ 
      detailview.setText(""); 
     } 

    detailview.requestFocus(); 
    //InputMethodManager inputManager = (InputMethodManager)activity.getSystemService(Context.INPUT_METHOD_SERVICE); 
    //inputManager.restartInput(detailview); 

    if(convertViewWasNull){ 

     detailview.addTextChangedListener(new GenericTextWatcher(detailview)); 

    } 

    detailview.setTag(title.get(position).toString()); 
    return rowView; 
} 

private class GenericTextWatcher implements TextWatcher{ 

     private EditText view; 
     private GenericTextWatcher(EditText view) { 
      this.view = view; 
     } 

     public void afterTextChanged(Editable editable) { 

      text = editable.toString(); 
      //save the value for the given tag : 
      EditCardListAdapter.this.editTextValues.put((String) view.getTag(),text); 

     } 

     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) { 
      // TODO Auto-generated method stub 

     } 
    } 

Answer 1

我看到你追蹤的編輯到現場，但是當你創建你不使用這些編輯list item view：

 if (detail.get(position) != null) { 
      String orig = detail.get(position).toString(); 
      String edited = editTextValues.get(title.get(position).toString()); 
      detailview.setText(edited != null ? edited : orig); 
     } else { 
      detailview.setText(""); 
     }