いつでも SharedPreferences を実装して、Android 実装をラップできます。
package com.company.sharedpreferences;
import android.content.Context;
import android.content.SharedPreferences;
import java.util.Map;
import java.util.Set;
public class EnhancedSharedPreferences implements SharedPreferences {
public static class NameSpaces {
public static String MY_FUN_NAMESPACE = "MyFunNameSpacePrefs";
}
public static EnhancedSharedPreferences getPreferences(String prefsName) {
return new EnhancedSharedPreferences(SomeSingleton.getInstance().getApplicationContext().getSharedPreferences(prefsName, Context.MODE_PRIVATE));
}
private SharedPreferences _sharedPreferences;
public EnhancedSharedPreferences(SharedPreferences sharedPreferences) {
_sharedPreferences = sharedPreferences;
}
//region Overrides
@Override
public Map<String, ?> getAll() {
return _sharedPreferences.getAll();
}
@Override
public String getString(String key, String defValue) {
return _sharedPreferences.getString(key, defValue);
}
@Override
public Set<String> getStringSet(String key, Set<String> defValues) {
return _sharedPreferences.getStringSet(key, defValues);
}
@Override
public int getInt(String key, int defValue) {
return _sharedPreferences.getInt(key, defValue);
}
@Override
public long getLong(String key, long defValue) {
return _sharedPreferences.getLong(key, defValue);
}
@Override
public float getFloat(String key, float defValue) {
return _sharedPreferences.getFloat(key, defValue);
}
@Override
public boolean getBoolean(String key, boolean defValue) {
return _sharedPreferences.getBoolean(key, defValue);
}
@Override
public boolean contains(String key) {
return _sharedPreferences.contains(key);
}
@Override
public Editor edit() {
return new Editor(_sharedPreferences.edit());
}
@Override
public void registerOnSharedPreferenceChangeListener(OnSharedPreferenceChangeListener listener) {
_sharedPreferences.registerOnSharedPreferenceChangeListener(listener);
}
@Override
public void unregisterOnSharedPreferenceChangeListener(OnSharedPreferenceChangeListener listener) {
_sharedPreferences.unregisterOnSharedPreferenceChangeListener(listener);
}
//endregion
//region Extension
public Double getDouble(String key, Double defValue) {
return Double.longBitsToDouble(_sharedPreferences.getLong(key, Double.doubleToRawLongBits(defValue)));
}
//endregion
public static class Editor implements SharedPreferences.Editor {
private SharedPreferences.Editor _editor;
public Editor(SharedPreferences.Editor editor) {
_editor = editor;
}
private Editor ReturnEditor(SharedPreferences.Editor editor) {
if(editor instanceof Editor)
return (Editor)editor;
return new Editor(editor);
}
//region Overrides
@Override
public Editor putString(String key, String value) {
return ReturnEditor(_editor.putString(key, value));
}
@Override
public Editor putStringSet(String key, Set<String> values) {
return ReturnEditor(_editor.putStringSet(key, values));
}
@Override
public Editor putInt(String key, int value) {
return ReturnEditor(_editor.putInt(key, value));
}
@Override
public Editor putLong(String key, long value) {
return ReturnEditor(_editor.putLong(key, value));
}
@Override
public Editor putFloat(String key, float value) {
return ReturnEditor(_editor.putFloat(key, value));
}
@Override
public Editor putBoolean(String key, boolean value) {
return ReturnEditor(_editor.putBoolean(key, value));
}
@Override
public Editor remove(String key) {
return ReturnEditor(_editor.remove(key));
}
@Override
public Editor clear() {
return ReturnEditor(_editor.clear());
}
@Override
public boolean commit() {
return _editor.commit();
}
@Override
public void apply() {
_editor.apply();
}
//endregion
//region Extensions
public Editor putDouble(String key, double value) {
return new Editor(_editor.putLong(key, Double.doubleToRawLongBits(value)));
}
//endregion
}
}