从preferences.xml开始活动，并得到结果onActivityResult [英] Start Activity from preferences.xml and get the result in onActivityResult

问题描述

这是一个补充这个问题。

我可以启动活动，但我也需要能够得到的结果。我该怎么做呢？

I can launch the Activity but I also need to be able to get the result. How do I do it?

我想对我的preferencesActivity覆盖onActivityResult无济于事。

I tried overriding onActivityResult on my PreferencesActivity to no avail.

我缺少在preferences.xml一些额外的属性？

Am I missing some extra properties in the preferences.xml?

推荐答案

这是我所知道的是听的preference点击并明确推出意图的干净的解决方案。这样 onActivityResult 将被称为像往常一样。

The cleanest solution that I know of is to listen to the click on the preference and launch the intent explicitly. This way onActivityResult will be called as usual.

假设你的intent- preference在XML定义就可以把监听器像这样（其中 1234 是一个请求$ C $下 onActivityResult ）：

Assuming that your intent-preference is defined in XML you can attach a listener to it like this (where 1234 is a request code for onActivityResult):

Preference pref = (Preference) findPreference("prefKey");
pref.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
  @Override
  public boolean onPreferenceClick(Preference preference) {
    startActivityForResult(preference.getIntent(), 1234);
    return true;
  }
});

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