java MultiSelectListPreference是否获取检查值?
嗨,伙计,我想做一个简单的新闻阅读器应用。在共享首选项中,用户可以选择他可以看到的新闻部分。在添加MultiSelectListPreference并检索th值之前,我一直在进行通信。但不幸的是,它检索的是所有值,而不仅仅是已检查的值
这是我的代码:
<MultiSelectListPreference
安卓:id="@+id/multiple_choice"
安卓:dialogTitle="@string/section_news_label"
安卓:entries="@array/news_sections"
安卓:entryValues="@array/section_values"
安卓:key="section_news_key"
安卓:summary="@string/section_hint"
安卓:defaultValue="@array/default_array"
/>
public class SettingsActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
}
public static class NewsPreferenceFragment extends PreferenceFragment
implements Preference.OnPreferenceChangeListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings_main);
Preference newsToShow = findPreference(getString(R.string.settings_news_show_key));
bindPreferenceSummaryToValue(newsToShow);
}
@Override
public boolean onPreferenceChange(Preference preference, Object value) {
String stringValue = value.toString();
preference.setSummary(stringValue);
return true;
}
private void bindPreferenceSummaryToValue(Preference preference) {
preference.setOnPreferenceChangeListener(this);
SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(preference.getContext());
String preferenceString = preferences.getString(preference.getKey(), "");
onPreferenceChange(preference, preferenceString);
}
}
}
SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
Set<String> entries = sharedPrefs.getStringSet("section_news_key", null);
if(entries == null){
Log.v("!!!!!!!!!", "No entries");
}else {
Log.v("!!!!!!!!!", entries.toString());
}
知道我做错了什么吗
共 (0) 个答案