android - RingtonePreference 未触发 OnPreferenceChangeListener

Question

我拥有的所有其他首选项都会触发其 OnPreferenceChangeListener。但是，我的 RingtonePreference 没有:

p = getPreferenceScreen().findPreference("pref_tone");
String rname = preferences.getString("pref_tone",Settings.System.DEFAULT_RINGTONE_URI.toString());
String name = ringtoneToName(rname);
p.setSummary(name);
p.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
    // Never hits here!
    String v = (String) newValue;
    preference.setSummary(ringtoneToName(v));           
    return true;
}
});

Answer 1

onActivityResult 必须调用 super.onActivityResult 是解决方法