TableViewController不会转到详细视图

Question

我已将this tutorial实施到我的项目中，但segue无法正常工作！我已经尝试了一切，但单击它时单元格会保持突出显示。我试过在推送中添加一个标识符 - 没有区别。我的标签栏以编程方式添加到我的appdelegate中 - 可能是吗？同样，tableview拒绝正确地适应屏幕，它重叠在状态栏上（几乎所有事情都尝试过）。

tableviewcontroller.h

#import <UIKit/UIKit.h>

@interface TableViewController : UITableViewController 


@end

my tableviewcontroller.m

#import "TableViewController.h"
#import "ViewController.h"
#import "AFNetworking.h"

@interface TableViewController ()

@property (strong, nonatomic) NSArray *googlePlacesArrayFromAFNetworking;

@end

@implementation TableViewController

- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
    // Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
self.tableView.delegate = self;
self.tableView.dataSource = self;
[self makeRestuarantRequests];
 self.edgesForExtendedLayout = UIRectEdgeNone;

}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

-(void)makeRestuarantRequests
{
NSURL *url = [NSURL URLWithString:@"https://maps.googleapis.com/maps/api/place/textsearch/json?query=restuarants+in+greenwich&sensor=false&key=AIzaSyD-kWneJACswSQfMFQ7sxRPhAEZpHHgvnw"];

NSURLRequest *request = [NSURLRequest requestWithURL:url];
//AFNetworking asynchronous url request
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

operation.responseSerializer = [AFJSONResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

    self.googlePlacesArrayFromAFNetworking = [responseObject objectForKey:@"results"];

    NSLog(@"The Array: %@",self.googlePlacesArrayFromAFNetworking);

    [self.tableView reloadData];


} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

    NSLog(@"Request Failed: %@, %@", error, error.userInfo);

}];

[operation start];

}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{

// Return the number of sections.
return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

// Return the number of rows in the section.
return [self.googlePlacesArrayFromAFNetworking count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if(cell == nil)
{
    cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]autorelease];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}

NSDictionary *tempDictionary= [self.googlePlacesArrayFromAFNetworking objectAtIndex:indexPath.row];

cell.textLabel.text = [tempDictionary objectForKey:@"name"];

if([tempDictionary objectForKey:@"rating"] != NULL)
{
    cell.detailTextLabel.text = [NSString stringWithFormat:@"Rating: %@ of 5",[tempDictionary   objectForKey:@"rating"]];
}
else
{
    cell.detailTextLabel.text = [NSString stringWithFormat:@"Not Rated"];
}

return cell;
}


#pragma mark - Prepare For Segue

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
ViewController *detailViewController = (ViewController *)segue.destinationViewController;
detailViewController.restaurantDetail = [self.googlePlacesArrayFromAFNetworking objectAtIndex:indexPath.row];

}


@end

我的appdelegate文件（标签栏内容）

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
// Override point for customization after application launch.

//Add tab bar
UITabBarController *tbc = [[UITabBarController alloc]init];

//Specify viewcontrollers for each tab
MapViewController *mvc = [[MapViewController alloc]init];
TableViewController *evc = [[TableViewController alloc]init];
AboutViewController *avc = [[AboutViewController alloc]init];

//Label for tabs
[mvc.tabBarItem setTitle:@"Map"];
[evc.tabBarItem setTitle:@"Eat"];
[avc.tabBarItem setTitle:@"About"];

[mvc.tabBarItem setImage:[UIImage imageNamed:@"103-map.png"]];
[evc.tabBarItem setImage:[UIImage imageNamed:@"125-food.png"]];
[avc.tabBarItem setImage:[UIImage imageNamed:@"28-star.png"]];

[tbc setViewControllers:[NSArray arrayWithObjects:mvc, evc, avc, nil]];


//Add the view controller's view to the window and display.
[self.window setRootViewController:tbc]; //tab bars
[self.window makeKeyAndVisible];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
viewController.edgesForExtendedLayout = UIRectEdgeNone;

return YES;
}

这是调试日志：

单击表格单元格时出现断点错误

Answer 1

在viewcontroller之间转换，你应该有一个导航控制器。

//Specify viewcontrollers for each tab
MapViewController *mvc = [[MapViewController alloc]init];
TableViewController *evc = [[TableViewController alloc]init];
AboutViewController *avc = [[AboutViewController alloc]init];

UINavigationController* mvcNavi = [[UINavigationController alloc] initWithRootViewController: mvc];
UINavigationController* evcNavi = [[UINavigationController alloc] initWithRootViewController: evc];
UINavigationController* avcNavi = [[UINavigationController alloc] initWithRootViewController: avc];

[tbc setViewControllers:[NSArray arrayWithObjects: mvcNavi, evcNavi, avcNavi, nil]];

您应该在tableview中实现方法：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    //Alloc/init detailView
    UIViewController *detailView = [UIViewController alloc]init];
    detailView.restaurantDetail = [self.googlePlacesArrayFromAFNetworking objectAtIndex:indexPath.row];

    [self.navigationController pushViewController:detailView animated:YES];
  }

p / s：以编程方式创建视图时，不要通过segue更改视图，因此请删除prepareForSegue

Answer 2

如果您使用segue，则此代码可以提供帮助：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Assume self.view is the table view
    NSIndexPath *path = [self.tableView indexPathForSelectedRow];
    DetailObject *detail = [self detailForIndexPath:path];
    [segue.destinationViewController setDetail:detail];
}

从这里开始：Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?