android - 单击 ListView 项时更新 TextView 中的值

Question

我有一个包含项目的 ListView 。我开发了带有自定义对话框的 onitemclick() 函数来输入值。我需要用我们在对话框中输入的值更新 ListView 当前项目。我这样做过

 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        showCustomDialog(view);


        if(quantity>0){
            TextView tv=(TextView)view.findViewById(R.id.row_item_quantity);
            tv.setTextColor(R.color.white);
            tv.setText(quantity+"");
            quantity=0;
            Toast.makeText(getActivity(), "entered "+quantity , Toast.LENGTH_SHORT).show();
        }
    }

showCustomDialog 函数是

protected void showCustomDialog(View view) {
        // TODO Auto-generated method stub
        final Dialog dialog;
        dialog = new Dialog(getActivity());
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(R.layout.alert_enter_quantity);
        dialog.setCancelable(true);

        final EditText editText;
        editText = (EditText)dialog.findViewById(R.id.quantity_number);
        Button buttonCancel;
        buttonCancel = (Button)dialog.findViewById(R.id.quantity_cancel_button);
        buttonCancel.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
              dialog.dismiss();
            }
        });
        Button buttonOK;

        buttonOK = (Button)dialog.findViewById(R.id.quantity_ok_button);
        buttonOK.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                //Toast.makeText(getActivity(), "entered"+editText.getText().toString() , Toast.LENGTH_SHORT).show();
                String text=editText.getText().toString();
                if(text=="")
                    text=""+0;
                quantity =Integer.parseInt(text);

                //setQuantity(qty);
                dialog.dismiss();
            }
        });
        dialog.show();
    }

它获取值并将在我单击的下一个项目上更新。我该如何纠正这个问题。

Answer 1

使用

tv.setText(String.valueOf(数量);

代替

tv.setText(数量+"");