我在stackoverflow.com上搜索并搜索但是无法摆脱这种情况，我如何用GET的响应来填充TableView。我发送GET并在DetailViewController（我的主控制器）中的方法中解析响应，并希望用响应的一部分初始化TableViewCell，并使用另一部分初始化该单元格的细节..我创建了messageTableView和{ {1}} ..如果问题不够明确，我也可以共享代码。感谢
编辑我知道这不是所希望的，但我共享所有代码，因为我无法在viewControllers之间绑定变量，我可以在视图之间导航，但我不能在彼此之间共享变量..
这是我的DetailViewController的界面文件（在我的应用中，它是主视图控制器）
messageDetailViewController以下是其实施文件：
#import <UIKit/UIKit.h>
@interface BNT_1DetailViewController : UIViewController <UISplitViewControllerDelegate>
{
NSMutableArray *buttons;
NSString *userName, *password, *serverIP;
NSDictionary *mess;
IBOutlet UITextField *userNameF;
IBOutlet UITextField *passwordF;
IBOutlet UITextField *serverF;
NSURL *url;
NSMutableArray *mesag;
IBOutlet UIButton *acceptButton;
NSMutableArray *mesID; //saving meesage ID s to NSMutableArray
NSMutableArray *content;
}
@property(retain,nonatomic)NSMutableArray *mesID,*content;
@property(assign,nonatomic)NSMutableArray *mesag ;
@property(retain, nonatomic)NSDictionary *mess;
//@property (retain,nonatomic) NSMutableArray *buttons;
@property (retain, nonatomic) UITextField *userNameF;
@property (retain, nonatomic) UITextField *passwordF;
@property (retain, nonatomic) UITextField *serverF;
@property (retain, nonatomic) UIButton *acceptButton;
@property (retain, nonatomic) NSString *userName, *password, *serverIP;
@property (strong, nonatomic) id detailItem;
@property(retain,nonatomic)NSURL *url;
@property (strong, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
-(IBAction)acceptAct:(id)sender;
-(IBAction)readMessages:(id)sender;
-(IBAction)secondAct:(id)sender;
@end
我想用messID填充TableViewCells，每个单元格的详细信息（推入新视图控制器）将包含上面的“内容”
这是我的#import "BNT_1DetailViewController.h"
#import "mainMenu.h"
#import "messages.h"
@interface BNT_1DetailViewController ()
@property (strong, nonatomic) UIPopoverController *masterPopoverController;
- (void)configureView;
@end
@implementation BNT_1DetailViewController
@synthesize content,mesID,url;
@synthesize mesag,mess;
@synthesize userNameF, passwordF, serverF, acceptButton;
@synthesize userName, password, serverIP;
@synthesize detailItem = _detailItem;
@synthesize detailDescriptionLabel = _detailDescriptionLabel;
@synthesize masterPopoverController = _masterPopoverController;
-(IBAction)readMessages:(id)sender{
messages *message=[[messages alloc]initWithNibName:@"messages" bundle:nil];
/*
message.mesid=mesID;
message.contents=content;
*/
[self.navigationController pushViewController:message animated:TRUE];
}
-(IBAction)acceptAct:(id)sender{
userName=[[NSString alloc] initWithString:userNameF.text ];
[userNameF setText:userName];
NSUserDefaults *userNameDef= [NSUserDefaults standardUserDefaults];
[userNameDef setObject:userName forKey:@"userNameKey"];
password =[[NSString alloc] initWithString:passwordF.text];
[passwordF setText:password];
NSUserDefaults *passDef=[NSUserDefaults standardUserDefaults];
[passDef setObject:password forKey:@"passwordKey"];
serverIP=[[NSString alloc] initWithString: serverF.text];
[serverF setText:serverIP];
NSUserDefaults *serverDef=[NSUserDefaults standardUserDefaults];
[serverDef setObject:serverIP forKey:@"serverIPKey"];
[userNameDef synchronize];
[serverDef synchronize];
[passDef synchronize];
UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"BNTPRO "
message:@"Your User Informations are going to be sent to server. Do you accept?"
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:@"Cancel", nil];
[message show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:@"OK"])
{
if([userNameF.text isEqualToString:@""]|| [passwordF.text isEqualToString:@""] || [serverF.text length]<6)
{
UIAlertView *message1 = [[UIAlertView alloc] initWithTitle:@"BNTPRO "
message:@"Your User Informations are not defined properly!"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles: nil];
[message1 show];
[userNameF resignFirstResponder];
[passwordF resignFirstResponder];
return;
}
mainMenu *ma=[[mainMenu alloc]initWithNibName:@"mainMenu" bundle:nil];
NSString *str1=[@"?username=" stringByAppendingString:userNameF.text];
NSString *str2=[@"&password=" stringByAppendingString:passwordF.text];
NSString *str3=[str1 stringByAppendingString:str2];
NSString *str4 =[@"http://" stringByAppendingString:serverF.text];
url=[NSURL URLWithString:[str4 stringByAppendingString:[@"/ipad/login.php" stringByAppendingString:str3]]];
//get the url to jsondata
NSData *jSonData=[NSData dataWithContentsOfURL:url];
if (jSonData!=nil) {
NSError *error=nil;
id result=[NSJSONSerialization JSONObjectWithData:jSonData options:
NSJSONReadingMutableContainers error:&error];
NSLog(@"%@",result);
if (error==nil) {
mess=[result objectForKey:@"message"];
NSDictionary *messContent=[mess valueForKeyPath:@"message"];
NSDictionary *messID=[mess valueForKeyPath:@"ID"];
NSString*key1=[ result objectForKey:@"key" ];
NSString *s1=[@"http://" stringByAppendingString:serverF.text];
NSString *s2=[s1 stringByAppendingString:@"/ipad/button.php"];
NSURL *url2=[NSURL URLWithString:[s2 stringByAppendingString:[@"?key=" stringByAppendingString:key1]]];
NSData *data2=[NSData dataWithContentsOfURL:url2];
id result2=[NSJSONSerialization JSONObjectWithData:data2 options:NSJSONReadingMutableContainers error:nil];
mesID = [NSMutableArray array];//saving meesage ID s to NSMutableArray
content = [NSMutableArray array];
for ( mesag in mess) {
//i want to populate TableViewCells with the messID and the details of each cell(push in new view controller) will contain 'content' above
/*
[mesID addObject:[mesag objectForKey:@"ID"]];
[content addObject:[mesag objectForKey:@"message"]];
*/
[[NSUserDefaults standardUserDefaults] setObject:messID forKey:@"message"];
[[NSUserDefaults standardUserDefaults] setObject:messContent forKey:@"messContent"];
// NSLog(@"%@", [[NSUserDefaults standardUserDefaults] dictionaryRepresentation]);
// NSLog(@"The Message with ID %@ is: %@\n",messID,messContent);
}
NSLog(@"MessID: %@",mesID);
NSLog(@"Context: %@",content);
buttons = [NSMutableArray array];
CGFloat yPosition = 60.0f;
CGFloat xPosition = 40.0f;
const CGFloat buttonHeight = 75.0f;
const CGFloat buttonMargin = 50.0f;
UIButton *bt=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[bt setTitle:@"Messages" forState:UIControlStateNormal];
[bt addTarget:self action:@selector(readMessages:) forControlEvents:UIControlEventTouchUpInside];
bt.titleLabel.font=[UIFont systemFontOfSize:25];
bt.frame=CGRectMake(300.0f, 700.0f,180.0f , 70.0f);
[ma.view addSubview:bt];
for(NSDictionary* buttonData in result2) {
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
NSString* buttonTitle = [buttonData objectForKey:@"name"];
NSString* buttonID=[buttonData objectForKey:@"ID"];
[button setTitle:buttonTitle forState:UIControlStateNormal];
[button setTag:[buttonID intValue]];
button.titleLabel.font=[UIFont systemFontOfSize:28];
button.frame = CGRectMake(xPosition, yPosition, 210.0f, buttonHeight);
[button addTarget:self action:@selector(secondAct:) forControlEvents:UIControlEventTouchUpInside];
[ma.view addSubview:button];
// [v.buttons addObject:button];
xPosition = 260.0f;
yPosition+= buttonHeight + buttonMargin;
}
[self.navigationController pushViewController:ma animated:TRUE];
}
}} }
-(IBAction)secondAct:(id)sender{
NSLog(@"ABC: %d",[sender tag]);
}
- (void)dealloc
{
[_detailItem release];
[_detailDescriptionLabel release];
[_masterPopoverController release];
[super dealloc];
}
#pragma mark - Managing the detail item
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
[_detailItem release];
_detailItem = [newDetailItem retain];
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
[passwordF setSecureTextEntry:YES];
userNameF.font=[UIFont systemFontOfSize:24];
userNameF.frame = CGRectMake(320.0f,60.0f,360.0f,50.0f);
passwordF.frame = CGRectMake(320.0f,145.0f,360.0f,50.0f);
serverF.frame= CGRectMake(320.0f,235.0f,360.0f,50.0f);
userNameF.font=[UIFont boldSystemFontOfSize:24];
[userNameF becomeFirstResponder];
serverF.font=[UIFont boldSystemFontOfSize:24];
passwordF.font=[UIFont systemFontOfSize:24];
acceptButton.titleLabel.font=[UIFont boldSystemFontOfSize:26];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(@"Detail", @"Detail");
}
return self;
}
#pragma mark - Split view
- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
barButtonItem.title = NSLocalizedString(@"Master", @"Master");
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
self.masterPopoverController = popoverController;
}
- (void)splitViewController:(UISplitViewController *)splitController willShowViewController:(UIViewController *)viewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
// Called when the view is shown again in the split view, invalidating the button and popover controller.
[self.navigationItem setLeftBarButtonItem:nil animated:YES];
self.masterPopoverController = nil;
}
@end
文件，名为messages：
（.h档案）
TableViewController和.m文件：
#import <UIKit/UIKit.h>
@interface messages : UITableViewController{
NSMutableArray *mesid,*contents;
}
@property(retain,nonatomic)NSMutableArray *mesid,*contents;
@end
我的最后一个控制器是messageDetails。它的接口文件是：
#import "messages.h"
#import "messageDetail.h"
@implementation messages
@synthesize mesid;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return [mesid count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text=[mesid objectAtIndex:indexPath.row];
[tableView reloadData];
// Configure the cell...
return cell;
}
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
messageDetail *detailViewController = [[messageDetail alloc] initWithNibName:@"messageDetail" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
detailViewController.title=@"Message Detail";
[detailViewController release];
}
@end
最后一个，messageDetail的实现文件：
#import <UIKit/UIKit.h>
@interface messageDetail : UIViewController
@end
答案 0 :(得分：2)
通过快速查看，我发现了几个问题：
1.你有一个UITableViewController的实例。 UITableViewController的正确初始化是initWithStyle:而是使用它。否则你需要做一些额外的工作，而这真的不需要。
2.您正在检查UIAlertView实例中按钮的字符串。我的建议不是那样做的。字符串有些不稳定。可以插入多语言作为功能，之后您可能会遇到问题。改为检查索引。这是一个简单的int，而不是头痛警报！
3.您已在NSMutableArray课程中将messages设为属性。你为什么不填充它。这就是为什么信息没有出现在你的表中：因为你没有将它提供给特定的类。
从控制器初始化控制器（包含表视图的类），从原始控制器提供其内容。
建议： 4.对于标准化，请使用大写字母命名类，使用小字母命名变量。常数应以“k”字母开头。