SunXiaoShan

import UIKit

class ViewController: UIViewController {
    var label:UILabel? = nil

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        setupHardCodeLabel()

SunXiaoShan

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self addBottomSheetView];
}

- (void)addBottomSheetView {
    BottomSheetViewController *bottomSheetVc = [BottomSheetViewController new];
    [self addChildViewController:bottomSheetVc];
    [self.view addSubview:bottomSheetVc.view];

SunXiaoShan

- (void)panGesture:(UIPanGestureRecognizer *)recognizer {
    // Bottom Sheet 會隨著手勢移動跟著移動
    [self moveViewWithGesture:recognizer];

    // 當手移開螢幕時，Bottom Sheet 會根據新狀態移動到對應位置 
    if (recognizer.state != UIGestureRecognizerStateEnded) {
        return;
    }

    // 以動畫效果來漸進畫面的移動

SunXiaoShan

static CGFloat fullViewYPosition = 0;
static CGFloat partialViewYPosition = 0;
static CGFloat expandedViewYPosition = 0;

- (void)setupData {
    fullViewYPosition = 100;
    partialViewYPosition = [UIScreen mainScreen].bounds.size.height - 130;
    expandedViewYPosition = [UIScreen mainScreen].bounds.size.height - 130 - 130;

    self.lastStatus = expanded;

SunXiaoShan

- (void)setupGestureEvent {
    UIPanGestureRecognizer *gesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];
    [self.view addGestureRecognizer:gesture];
    [self roundViews];
}

- (void)roundViews {
    self.view.layer.cornerRadius = 10;
    self.view.clipsToBounds = YES;
}

SunXiaoShan

#!/bin/sh

# reference
# https://www.twblogs.net/a/5b8c3b1a2b71771883317c2c

BUILD_RESULT_PATH=build_output

if [ -x nasm ]; then
    wget "https://www.nasm.us/pub/nasm/releasebuilds/2.14.03rc2/macosx/nasm-2.14.03rc2-macosx.zip"
    unzip nasm-2.14.03rc2-macosx.zip

SunXiaoShan

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "DragDrogCollectionViewCell", for: indexPath) as! DragDrogCollectionViewCell
    let index = indexPath.section * ViewController.columnCount +  indexPath.row
    cell.backgroundColor = UIColor.clear
    cell.label.text = ""
    if (index < cellDataList.count) {
        cell.backgroundColor = UIColor.yellow
        cell.label.text = String(cellDataList[index])
    }

SunXiaoShan

func updateDataIndex(from fromIndexPath: IndexPath, to toIndexPath: IndexPath) {
    let fromPosition = fromIndexPath.item
    let toPosition = toIndexPath.item
    let selected = cellDataList[fromPosition] as Int
    DispatchQueue.main.async {[weak self] in
        self?.cellDataList.remove(at: fromPosition)

        var newindex = toPosition
        if (newindex > self?.cellDataList.count ?? 0) {
            newindex = self?.cellDataList.count ?? 0

SunXiaoShan

class ViewController: UIViewController {
  func setupCollectionView() {
        self.collectionView.collectionViewLayout = columnLayout
        self.collectionView.dataSource = self
        self.collectionView.dragInteractionEnabled = true
        self.collectionView.dragDelegate = self
        self.collectionView.dropDelegate = self
    }
  
  func updateDataIndex(from fromIndexPath: IndexPath, to toIndexPath: IndexPath) {

SunXiaoShan

func setupCollectionView() {
        self.collectionView.collectionViewLayout = columnLayout
        self.collectionView.dataSource = self
        self.collectionView.dragDelegate = self
        self.collectionView.dragInteractionEnabled = true
}

extension ViewController: UICollectionViewDragDelegate {
    func collectionView(_ collectionView: UICollectionView, itemsForBeginning session: UIDragSession, at indexPath: IndexPath) -> [UIDragItem] {
        let attributedString = String(indexPath.item)