如何使用ListView和適配器在EditText中獲取文本

我在從列表視圖適配器中的EditText獲取文本時遇到問題。例如，當我點擊「9」時，它不會給我9.相反，我總是得到3.我無法找出背後的原因。請告訴我我哪裏錯了。如何使用ListView和適配器在EditText中獲取文本

這是我的代碼，供您細讀。先謝謝你！

class Planet { 
    String name; 
    int distance; 
    String quantità; 
    boolean selected = false; 

     public Planet(String name, int distance, String quantità) { 
     super(); 
     this.name = name; 
     this.distance = distance; 
     this.quantità = quantità; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 

    } 

    public int getDistance() { 
     return distance; 
    } 

    public void setDistance(int distance) { 
     this.distance = distance; 
    } 

    public boolean isSelected() { 
     return selected; 
    } 

    public void setSelected(boolean selected) { 
     this.selected = selected; 
    } 

    public String getQuantità() { 
     return quantità; 
    } 

    public void setQuantità(String quantità) { 
     this.quantità = quantità; 
    } 
    } 

    public class PlanetAdapter extends ArrayAdapter<Planet>{ 
    private List<Planet> planetList; 
    private Context context; 
    ArrayList<Planet> objects; 


    public PlanetAdapter(List<Planet> planetList, Context context) { 
     super(context, R.layout.single_listview_item, planetList); 
     this.planetList = planetList; 
     this.context = context; 
    } 

    public static class PlanetHolder { 
     public TextView planetName; 
     public TextView distView; 
     public CheckBox chkBox; 
     public EditText edit; 
     public String quantità="3"; 
    } 

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

     View v = convertView; 

     final PlanetHolder holder = new PlanetHolder(); 

     if(convertView == null) { 

      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      v = inflater.inflate(R.layout.single_listview_item, null); 

      holder.planetName = (TextView) v.findViewById(R.id.name); 
      holder.distView = (TextView) v.findViewById(R.id.dist); 
      holder.chkBox = (CheckBox) v.findViewById(R.id.chk_box); 
      holder.edit = (EditText) v.findViewById(R.id.editText); 


      holder.edit.setVisibility(View.GONE); 
      holder.edit.setEnabled(false); 



      holder.chkBox.setOnCheckedChangeListener((MainActivity) context); 

      // 
      holder.chkBox.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 

        if (holder.chkBox.isChecked()) { 

         holder.edit.setVisibility(View.VISIBLE); 
         holder.edit.setEnabled(true); 



         holder.edit.addTextChangedListener(new TextWatcher() { 
          @Override 
          public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
          } 

          @Override 
          public void onTextChanged(CharSequence s, int start, int before, int count) { 
           holder.quantità = holder.edit.getText().toString(); 

           System.out.println("leggo questo dalla edittext:"+ holder.edit.getText().toString()); 


          } 

          @Override 
          public void afterTextChanged(Editable s) { 

          } 
         }); 


        } else { 
         holder.edit.setVisibility(View.GONE); 
         holder.edit.setEnabled(false); 
         holder.edit.setText(null); 

        } 
       } 

      }); 


      } else { 

     } 


     Planet p = planetList.get(position); 

     p.setQuantità(holder.quantità); 



     holder.planetName.setText(p.getName()); 
     holder.distView.setText("" + p.getDistance()); 
     holder.chkBox.setChecked(p.isSelected()); 
     holder.chkBox.setTag(p); 
     holder.edit.setEnabled(false); 


     return v; 
    } 


    ArrayList<Planet> getBox() { 
     ArrayList<Planet> box = new ArrayList<Planet>(); 
     for (Planet p : planetList) { 
      if (p.selected) 
       box.add(p); 
     } 
     return box; 
    } 

    }

來源

2016-04-26 Marco Di Iorio

共享代碼和適配器。 –

請通過編輯您的問題更新您的代碼，不要將它添加到答案 –

我有這個錯誤：「看起來您的文章主要是代碼，請添加一些更多詳細信息」。爲什麼？ –

這個替換您getView（）方法：類

View row = convertView; 
PlanetHolder holder = null; 
if (row == null) { 
    LayoutInflater inflater = ((Activity) context).getLayoutInflater(); 
    row = inflater.inflate(R.layout.single_listview_item, parent, false); 
    holder = new PlanetHolder(); 
    holder.planetName = (TextView) row.findViewById(R.id.name); 
    holder.distView = (TextView) row.findViewById(R.id.dist); 
    holder.chkBox = (CheckBox) row.findViewById(R.id.chk_box); 
    holder.edit = (EditText) row.findViewById(R.id.editText); 
    row.setTag(holder); 
} else { 
    holder = (PlanetHolder) row.getTag(); 
} 
final Planet p = planetList.get(position); 

holder.chkBox.setOnCheckedChangeListener((MainActivity) context); 
holder.chkBox.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     if (holder.chkBox.isChecked()) { 
      holder.edit.setVisibility(View.VISIBLE); 
      holder.edit.setEnabled(true); 
      holder.edit.addTextChangedListener(new TextWatcher() { 
       @Override 
       public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
       } 

       @Override 
       public void onTextChanged(CharSequence s, int start, int before, int count) { 
       } 

       @Override 
       public void afterTextChanged(Editable s) { 
        p.setQuantità(holder.edit.getText().toString().trim()); 
       } 
      }); 
     } else { 
      holder.edit.setVisibility(View.GONE); 
      holder.edit.setEnabled(false); 
      holder.edit.setText(null); 
     } 
    } 
}); 
holder.planetName.setText(p.getName()); 
holder.distView.setText("" + p.getDistance()); 
holder.chkBox.setChecked(p.isSelected()); 
holder.chkBox.setTag(p); 
holder.edit.setEnabled(false); 

return row;

來源

2016-04-26 11:03:20

接受答案和投票:)謝謝 –

你可以通過這種方式得到你的listview文本，在你的activity或fragment中使用它。這裏的項目是一個數組列表。

for (int i = 0; i < items.size(); i++) { 

      View wantedView = recyclerView.getChildAt(i); 
      EditText editqty = (EditText) wantedView.findViewById(R.id.edtTxtQty); 
      if ((editqty.getText().toString().length() > 0)) { 
       //store edit text value in any arraylist or array by editqty.getText().toString() 
      } 
     }

來源

2016-04-26 09:57:11

你有PlanetHolder類的固定值，讓您始終獲得價值 '3'

public static class PlanetHolder { 
    public TextView planetName; 
    public TextView distView; 
    public CheckBox chkBox; 
    public EditText edit; 
    public String quantità="3"; 
}

刪除public String quantità固定值。

和第二個是你必須聲明View v = convertView;但如果條件可以檢查這個if(convertView == null) {所以更換convertView到v

來源

2016-04-26 10:49:47

如何使用ListView和適配器在EditText中獲取文本

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