频繁回调onLayoutChildren和item刷新问题

1.内部调了mCurSelectedView.setSelected()导致onLayoutChildren回调频繁
2.onLayoutChildren内部错误的逻辑导致item无法刷新
`
if (state.getItemCount() != 0 && !state.didStructureChange()) {
    if (BuildConfig.DEBUG) {
        Log.d(TAG, "onLayoutChildren: ignore extra layout step");
    }
    return;
}
`