如何将新值添加到listpreference并保存? [英] How to add new value to listpreference and save it?

问题描述

我有一个从资源xml创建的列表首选项.我添加了创建对话框的首选项，用户可以在其中向listPreference添加值.

I have a list Preference that created from resource xml. I added preference that created dialog in which user can add value to listPreference.

使用这些方法，我添加了新的价值:

using those methods i added new value:

  entries = getEntries();
  entryValues = getEntryValues();

当用户将值添加到listpreference时，其显示.但是，当preferenceScreen重新创建新值时，它就会消失.

when user is adding values to listpreference, its displayed. But when preferenceScreen is recreating new value disappearing.

如何保存这些新值?

推荐答案

问题是，当您重新打开PreferenceScreen时，它会从XML加载ListPreference的值.您可以使用ListPreference的setEntries()和setEntryVaues()方法更改此行为.当然，您需要以某种方式存储用户输入的所有值及其索引.您可以使用数据库或SharedPreferences.希望这会有所帮助.

Problem is that when you're reopening your PreferenceScreen, it loads the ListPreference's values from XML. You can change this behavior using the setEntries() and setEntryVaues() methods of ListPreference. Of course you need to somehow store all the values and their indexes that your users enter. You can use databases or SharedPreferences for it. Hope this helps.

编辑

将ListPreference的值保存到SharedPreferences中:

preferences.edit().putString(listPreference.getKey(), listPreference.getValue());

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