没有设置java共享首选项
我在活动开始时使用以下代码
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this, 安卓.R.layout.simple_spinner_item, transferToOrFromArray);
spinnerArrayAdapter.setDropDownViewResource(安卓.R.layout.simple_spinner_dropdown_item);
transferTo.setAdapter(spinnerArrayAdapter);
transferFrom.setAdapter(spinnerArrayAdapter);
SharedPreferences CNPASettings = getSharedPreferences("CNPA",0);
transferTo.setSelection(spinnerArrayAdapter.getPosition(CNPASettings.getString("transferTo",spinnerArrayAdapter.getItem(0))));
transferFrom.setSelection(spinnerArrayAdapter.getPosition(CNPASettings.getString("transferFrom",spinnerArrayAdapter.getItem(0))));
当我完成任务时,我按下包含以下代码的“完成”按钮
title = "Success";
error = "Transfer has been done";
SharedPreferences CNPASettings = getSharedPreferences("CNPA",0);
SharedPreferences.Editor prefEditor = CNPASettings.edit();
prefEditor.putString("tranferFrom", transferFrom.getSelectedItem().toString());
prefEditor.putString("tranferTo", transferTo.getSelectedItem().toString());
prefEditor.commit();
finish();
但是当我再次创建活动时,它会传递默认值spinnerArrayAdapter.getItem(0))
我做错了什么
# 1 楼答案
转移和转移。。。。。拼写错误
# 2 楼答案
选择时使用位置号,而不是字符串。根据该位置,我们将当前焦点设置为微调器。 请查看下面的链接以供参考 Shared Preferences in android