在摘要中显示EditTextPreference的值

我正在学习如何在Android中开发并想要进行设置活动,

我的设置活动

public class Main extends Activity  {


    protected SettingsFragment settingsFragment;


    @SuppressLint("NewApi")
    @TargetApi(11)
    public class SettingsFragment extends PreferenceFragment implements
            SharedPreferences.OnSharedPreferenceChangeListener {


        @Override
        public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
            setSummaries();


        }


        @Override
        public void onResume() {
            final SharedPreferences sh = getPreferenceManager().getSharedPreferences() ;
            super.onResume();
            sh.registerOnSharedPreferenceChangeListener(this);

        }

        @Override
        public void onPause() {
            final SharedPreferences sh = getPreferenceManager().getSharedPreferences() ;
            super.onPause();
            sh.unregisterOnSharedPreferenceChangeListener(this);
        }

        @SuppressLint("NewApi")
        public void setSummaries(){

           final SharedPreferences sh = getPreferenceManager().getSharedPreferences() ;


            //Pref1
            Preference stylePref = findPreference("editTextPref");
            stylePref.setSummary(sh.getString("editTextPref", ""));

            //here the other preferences..
        }


        @Override
        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
            if (key.equals("editTextPref")) {
                Preference pref = settingsFragment.findPreference(key);
                // Set summary to be the user-description for the selected value
                pref.setSummary(sharedPreferences.getString(key, ""));

            }
            //here the others preferences
        }
    }//End fragment

    @SuppressLint("NewApi")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        settingsFragment = new SettingsFragment();
        getFragmentManager().beginTransaction()
                .replace(android.R.id.content, settingsFragment)
                .commit();


    }


}

和我的res/preferences.xml档案

所以现在我有设置活动的活动.但我想显示EditTextPref的值android:summary.我找到了很多主题,但所有功能都已弃用.

编辑:感谢@Ace_McIntosh,我为想要它的人编辑了我的代码,它现在正在运行.

只是覆盖getSummary的EditTextPreference,那么你会得到与显示总结其价值EditTextPreference.

public class EditSummaryPreference extends EditTextPreference {
    ...// omit constructor

    @Override
    public CharSequence getSummary() {
        return getText();
    }
}

（在Kotlin中）我希望做一些更简单的事情，只是创建一个扩展EditTextPreference的类：

import android.content.Context
import android.support.v7.preference.EditTextPreference
import android.util.AttributeSet

/**
 * This class was created by Anthony M Cannon on 17/04/2018.
 */
class SummarisedEditTextPreference @JvmOverloads constructor(context: Context,
    attrs: AttributeSet? = null) : EditTextPreference(context, attrs) {

    private var mOnChangeListener: OnPreferenceChangeListener? = null

    init {
        super.setOnPreferenceChangeListener { preference, newValue ->
            summary = newValue as String
            mOnChangeListener?.onPreferenceChange(preference, newValue) ?: true
        }
    }

    /**
    * Called when this Preference has been attached to a Preference hierarchy.
    * Make sure to call the super implementation.
    *
    * @param preferenceManager The PreferenceManager of the hierarchy.
    */
    override fun onAttachedToHierarchy(preferenceManager: PreferenceManager) {
        super.onAttachedToHierarchy(preferenceManager)
        summary = sharedPreferences.getString(key, null)
    }


    /**
     * Sets the callback to be invoked when this Preference is changed by the
     * user (but before the internal state has been updated).
     *
     * @param onPreferenceChangeListener The callback to be invoked.
     */
    override fun setOnPreferenceChangeListener(
        onPreferenceChangeListener: OnPreferenceChangeListener) {
        mOnChangeListener = onPreferenceChangeListener
    }
}

然后可以这样使用：

<<您的包裹名称>.SummarisedEditTextPreference/>