我正在尝试导航到 UITableView 中的详细视图,并且在执行它时似乎遇到了一些问题。
我的代码:
视图控制器.h
#import <UIKit/UIKit.h>
#import "SecondViewController.h"
@interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>{
NSArray *tableItems;
NSArray *images;
}
@property (nonatomic,retain) NSArray *tableItems;
@property (nonatomic,retain) NSArray *images;
@end
视图控制器.m
#import "ViewController.h"
#import <QuartzCore/QuartzCore.h>
#import "SecondViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize tableItems,images;
- (void)viewDidLoad
{
[super viewDidLoad];
tableItems = [[NSArray alloc] initWithObjects:@"Item1",@"Item2",@"Item3",nil];
images = [[NSArray alloc] initWithObjects:[UIImage imageNamed:@"clock.png"],[UIImage imageNamed:@"eye.png"],[UIImage imageNamed:@"target.png"],nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return tableItems.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
//Step 1:Check whether if we can reuse a cell
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
//If there are no new cells to reuse,create a new one
if(cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:(UITableViewCellStyleDefault) reuseIdentifier:@"cell"];
UIView *v = [[UIView alloc] init];
v.backgroundColor = [UIColor redColor];
cell.selectedBackgroundView = v;
//changing the radius of the corners
//cell.layer.cornerRadius = 10;
}
//Set the image in the row
cell.imageView.image = [images objectAtIndex:indexPath.row];
//Step 3: Set the cell text content
cell.textLabel.text = [tableItems objectAtIndex:indexPath.row];
//Step 4: Return the row
return cell;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
cell.backgroundColor = [ UIColor greenColor];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
SecondViewController *detailViewController = [[SecondViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
[detailViewController printRowNumber:indexPath.row+1];
//NSArray *dataItem = [self.tableItems objectAtIndex:[indexPath row]];
//detailViewController.dataSource = dataItem;
[self.navigationController pushViewController:detailViewController animated:YES];
//[self presentViewController:detailViewController animated:YES completion:NULL];
}
@end
SecondViewController.h
#import <UIKit/UIKit.h>
@interface SecondViewController : UIViewController{
IBOutlet UILabel *lbl;
}
-(void) printRowNumber:(int)num;
@end
第二视图控制器.m
#import "SecondViewController.h"
@interface SecondViewController ()
@end
@implementation SecondViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) printRowNumber:(int)num{
lbl.text = @"Hello";
NSLog(@"%d",num);
}
@end
我能够在输出中打印出 indexPath.row 的值,但无法显示 SecondViewController 的详细视图。不确定是什么问题。需要一些指导...谢谢..