Save the position of scrollview when the orientation changes

Question

These is my layout:

I need to save the scrolling position when the orientation change

Answer 1

Just set android:id on your scrolling element. Your view will save its scrolling position automatically.

Code from View.java:15554

protected void dispatchSaveInstanceState(SparseArray container) {
    if (mID != NO_ID && (mViewFlags & SAVE_DISABLED_MASK) == 0) {
        mPrivateFlags &= ~PFLAG_SAVE_STATE_CALLED;
        Parcelable state = onSaveInstanceState();
        if ((mPrivateFlags & PFLAG_SAVE_STATE_CALLED) == 0) {
            throw new IllegalStateException(
                    "Derived class did not call super.onSaveInstanceState()");
        }
        if (state != null) {
            // Log.i("View", "Freezing #" + Integer.toHexString(mID)
            // + ": " + state);
            container.put(mID, state);
        }
    }
}