我有一个列表视图,这些视图将从共享首选项中加载。当用户单击删除时,它应该从列表和粉碎首选项中删除。我的问题是,特定项目没有从共享首选项中删除,为此我在下面的代码中使用,
SharedPreferences settings = getSharedPreferences(
OptionsActivity.PREFS_NAME, 0);
int deviceSize = settings.getInt("deviceSize", 0);
SharedPreferences.Editor editor = settings.edit();
String deviceName = items.get(index);
editor.remove(deviceName + String.valueOf(items.get(index)));
editor.remove("deviceName" + String.valueOf(index));
int deviceid = settings.getInt("deviceId"+String.valueOf(items.get(index)),0);
editor.remove("deviceId" + String.valueOf(deviceid));
editor.putInt("deviceSize", deviceSize - 1);
editor.commit();
通过此代码,只有 deviceSize-1 正在工作,因此它似乎已从列表中删除,但当我看到共享首选项文件时,它不是。我的共享首选项文件如下,
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<string name="deviceName1">APPLE</string>//delete when click on delete
<int name="deviceId1" value="0" /> //delete when click on delete
<int name="deviceSize" value="1" /> //decrease by one when item deleted
</map>
当用户单击删除时,我想删除这 3 行表单首选项文件。如何删除整行?列表仅显示名称(APPLE)。