OC - 3D Touch(2)

点击UITableViewCell后弹出详情内容：
代码如下：
ViewController：

#import "ViewController.h"#import "My3DTouchViewController.h"#import "DetailsViewController.h"#import "TableViewCell.h"@interface ViewController ()<UITableViewDataSource,UITableViewDelegate,UIViewControllerPreviewingDelegate>@property(nonatomic,weak)UITableView *tableView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    UITableView *tableView=[[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];    tableView.dataSource=self;    tableView.delegate=self;    [tableView registerClass:[TableViewCell class] forCellReuseIdentifier:@"tableViewCell"];    [self.view addSubview:tableView];    self.tableView=tableView;}- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit{    // 打开详情页触发    if (viewControllerToCommit){        [self showViewController:viewControllerToCommit sender:self];    }}- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location{    // 1.我们可以通过触控的location获取 当前点击的是第几个元素(位于collectionview)    // 2.由于响应3dtouch事件的view是cell的contentView,我们对触控拿到的location要进行一个转换(相对于collectionview(父视图)来说的位置    // 3.这里通过previewingContext中sourceView获取到触摸的view    UIView *contentView = previewingContext.sourceView;    // 看回"2" 中第一句话,我们要拿到这个触控的location位于collectionview中的位置    CGPoint iLocation = [contentView convertPoint:location toView:self.tableView];    // 将 获取到的位置 通过collectionview获取indexPath    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:iLocation];    DetailsViewController * detailVC = [[DetailsViewController alloc]init];    detailVC.titleStr = [NSString stringWithFormat:@"%ld",indexPath.row];    return detailVC;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return 20;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    TableViewCell *detailCell = [tableView dequeueReusableCellWithIdentifier:@"tableViewCell"];    //设置代理    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9.0){        detailCell.delegate = self;    }    detailCell.textLabel.text=[NSString stringWithFormat:@"%ld",indexPath.row];    return detailCell;}-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    DetailsViewController *detailVC = [[DetailsViewController alloc]init];    detailVC.titleStr = [NSString stringWithFormat:@"%ld",indexPath.row];    [self.navigationController pushViewController:detailVC animated:YES];}@end

//详情控制器DetailsViewController

#import "DetailsViewController.h"@interface DetailsViewController ()@end@implementation DetailsViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.    self.view.backgroundColor = [UIColor blueColor];    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100,30)];    label.center = self.view.center;    label.textColor=[UIColor whiteColor];    label.text = [NSString stringWithFormat:@"内容为：%@d",_titleStr];    [self.view addSubview:label];}#pragma mark 代理方法,设置 这个页面可以选择的按钮(3dtouch 呼出预览页后处于下方的按钮)- (NSArray<id<UIPreviewActionItem>> *)previewActionItems{    UIPreviewAction *itemA = [UIPreviewAction actionWithTitle:@"加入购物车" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {        NSLog(@"加入购物车");    }];    UIPreviewAction *itemA2 = [UIPreviewAction actionWithTitle:@"取消" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {        NSLog(@"取消");    }];    return @[itemA,itemA2];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end

TableViewCell

#import <UIKit/UIKit.h>@interface TableViewCell : UITableViewCell// 3dtouch代理@property (weak,nonatomic) id<UIViewControllerPreviewingDelegate> delegate;@end#import "TableViewCell.h"@implementation TableViewCell- (void)awakeFromNib {    // Initialization code}-(void)setDelegate:(id<UIViewControllerPreviewingDelegate>)delegate{    if (!_delegate){        _delegate = delegate;        UIViewController *controller = (UIViewController *)delegate;        [controller registerForPreviewingWithDelegate:delegate sourceView:self.contentView];    }}- (void)setSelected:(BOOL)selected animated:(BOOL)animated {    [super setSelected:selected animated:animated];    // Configure the view for the selected state}@end

效果图：