[컴][안드로이드] savedState 에 자신이 원하는 state 를 추가하는 법

custom SaveState 만들기 / savedState 사용법 / onSaveInstanceState() 에서 savedState 사용하는 방법

 

savedState 에 자신이 원하는 state 를 추가하는 법

 

class C{
	static class SavedState extends BaseSavedState {
		boolean isExpanded;

		SavedState(Parcelable superState) {
			super(superState);
		}

		private SavedState(Parcel in) {
			super(in);
			isExpanded = in.readInt() != 0;
		}

		@Override
		public void writeToParcel(Parcel out, int flags) {
			super.writeToParcel(out, flags);
			out.writeInt(isExpanded ? 1 : 0);
		}

		public static final Parcelable.Creator<SavedState> CREATOR =
				new Parcelable.Creator<SavedState>() {
			@Override
			public SavedState createFromParcel(Parcel in) {
				return new SavedState(in);
			}

			@Override
			public SavedState[] newArray(int size) {
				return new SavedState[size];
			}
		};
	}


	@Override
	protected Parcelable onSaveInstanceState() {
		Parcelable superState = super.onSaveInstanceState();

		// {@ref: http://developer.android.com/reference/android/view/View.BaseSavedState.html}
		SavedState ss = new SavedState(superState);
		ss.isExpanded = isSlideable() ? isExpanded() : mPreservedExpandedState;
	
		return ss;
	}

	

	@Override
	protected void onRestoreInstanceState(Parcelable state) {
		SavedState ss = (SavedState) state;
		super.onRestoreInstanceState(ss.getSuperState());

		if (ss.isExpanded) {
			expandPane();
		} else {
			collapsePane();
		}
		mPreservedExpandedState = ss.isExpanded;
	}


}