안드로이드 환경설정 페이지 Preference로 만들기

SettingActivity PreferenceActivity  SharedPreferences.OnSharedPreferenceChangeListener 

MainActivity

@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { Intent i = new Intent(this, SettingActivity.class); this.startActivityForResult(i,100); return true; } return super.onOptionsItemSelected(item); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode){ case 100 : updateSetting(); //변경된 설정값을 적용한다 break; } }  

SettingActivity

public class SettingActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.setting);
/** setting ListPreference 항목 동적 생성 */
ListPreference listPreference = (ListPreference) findPreference("fpdb");
if (listPreference != null) {
    CharSequence entries[] = new String[Splash.static_FpdbList.size()];
    CharSequence entryValues[] = new String[Splash.static_FpdbList.size()];
    int i = 0;
    for (FpdbListVo list : Splash.static_FpdbList) {
        entries[i] = fpdbListTextSet(list);
        entryValues[i] = Integer.toString(i);
        i++;
    }
    listPreference.setEntries(entries);
    listPreference.setEntryValues(entryValues);
            /**EditText summary init*/
            SharedPreferences sPref = getPreferenceScreen().getSharedPreferences();
            EditTextPreference particleArea = (EditTextPreference) findPreference("particleArea");

particleArea.setSummary(sPref.getString("particleArea", ""));

            
        }
    }
@Override
protected void onResume() {
    super.onResume();
    PreferenceManager.getDefaultSharedPreferences(getApplication()).registerOnSharedPreferenceChangeListener(this);
}

@Override
protected void onPause() {
    super.onPause();
    PreferenceManager.getDefaultSharedPreferences(getApplication()).unregisterOnSharedPreferenceChangeListener(this);
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {

    Preference connectionPref = findPreference(key);
    if (connectionPref instanceof EditTextPreference) {
        EditTextPreference editPref = (EditTextPreference) connectionPref;
        editPref.setSummary(editPref.getText());
    }
}

Setting.xml

(\app\src\main\res\xml\setting.xml)

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<ListPreference
    android:defaultValue="0"
    android:dependency="selectFpdbUseCheck"
    android:key="fpdb"
    android:title="FPDB 선택" />
<EditTextPreference
    android:defaultValue="200"
    android:inputType="numberSigned|numberDecimal"
    android:key="particleArea"
    android:singleLine="true"
    android:title="particleArea" />
</PreferenceScreen>

위와같이(PreferenceActicity + Preference.xml) 만들다 보니, PrefernceActivity.findPreference()가 Lv11(허니콤) 부터 deprecated 되어있는것을 알게되었다.

대신에 PreferenceFregment를 사용하면된다.
이때, 그냥 PreferenceActicity를 PreferenceFregment로 변경하게 되면 안된다.

Fregment는 Activity 위에서만 동작하기 때문에 Activity에서 호출해야한다.

구성하는 방법을 세가지로 나눠보았다.

- PrefereceActivity +Header + PreferneceFragment +Preference.xml (android 에서 이렇게 만들라고 함)

- PrefereceActivity+ PreferneceFragment +Preference.xml

- PreferneceActivity +Preference.xm ( 처음에 하려고 했던것 deprecated)

첫번째는 안드로이드 세팅 가이드에서 한국어로 자세히 설명해주고 있다 (PrefereceActivity +Header + PreferneceFragment +Preference.xml)

https://developer.android.com/guide/topics/ui/settings.html
https://developer.android.com/reference/android/preference/PreferenceFragment.html