UIWebView中不显示在IOS内容

Question

我一直在努力围绕这需要一个类似的GUI作为SplitViewController的一个小项目。现在我所做的是，我有两个UIViewControllers即MasterViewController和DetailViewController其中添加作为视图控制器 的子视图的代码如下所示ViewController.m

- (void)viewDidLoad 
{ 
    UIScreen *screen = [UIScreen mainScreen]; 
    CGRect fullScreenRect = screen.bounds; // always implicitly in Portrait orientation. 
    width = fullScreenRect.size.width; 
    height = fullScreenRect.size.height; 
    detailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil]; 
    masterViewController = [[[MasterViewController alloc]initWithNibName:@"MasterViewController" bundle:nil] autorelease]; 
    masterViewController.view.frame = CGRectMake(0, 0, 299, height); 
    detailViewController.view.frame = CGRectMake(300, 0, width-300, height); 

    [self.view addSubview:masterViewController.view]; 
    [self.view addSubview:detailViewController.view]; 
} 

现在在MasterViewController didLoad方法我已经添加为子视图MasterTableViewController ...

MasterTableViewController类看起来像这样...

@interface MasterTableViewController : UITableViewController 
    { 
    DetailViewController *detailViewController; 
    } 

所有相关的UITableViewController的功能已经由一个... d我还添加了从用户添加URL并将其存储在MasterTableView中的功能。 现在在下面的函数中，我试图用必需的字符串调用DetailViewController的loadWebView函数。该呼叫完成了该功能。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    NSString *urlString = [_objects objectAtIndex:indexPath.row]; 
    detailViewController = [[DetailViewController alloc]init]; 
    [detailViewController loadWebView:urlString]; 
} 

在DetailViewController的loadWebView方法，我有以下实现..

-(void) loadWebView: (NSString *) urlToLoad 
{ 
    self.webView = [[[UIWebView alloc] 
       initWithFrame:CGRectMake(0, 45, self.view.frame.size.width, self.view.frame.size.height)] autorelease]; 
    [self.webView setDelegate:self]; 

    NSLog(@"SELF->WEBVIEW: %@",self.webView); 
    NSURL *url = [NSURL URLWithString:urlToLoad]; 
    NSLog(@"loading url %@ %@", urlToLoad, self.webView); 
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; 

    [self.webView loadRequest:requestObj]; 
} 

我也实施了以下功能只是为了确保我Webview是工作..

- (void)webViewDidStartLoad:(UIWebView *)webView 
{ 
    NSLog(@"webViewDidStartLoad"); 
} 
- (void)webViewDidFinishLoad:(UIWebView *)webView 
{ 
    NSLog(@"webViewDidFinishLoad"); 
} 

现在，当我运行我的程序日志打印所有这些东西......

2012-10-15 20:04:21.621 SyneBlogApp[2320:c07] device width height 768.000000 1024.000000 
2012-10-15 20:04:21.630 SyneBlogApp[2320:c07] calling viewDidLoad for detailView 
2012-10-15 20:04:21.636 SyneBlogApp[2320:c07] /Users/Library/Application Support/iPhone Simulator/5.1/Applications/B846EDA4-49CF-4DD3-AAB3-FF8BC19C65DA/Documents/Data.plist: 
2012-10-15 20:04:22.942 SyneBlogApp[2320:c07] calling viewDidLoad for detailView 
2012-10-15 20:04:22.954 SyneBlogApp[2320:c07] SELF>WEBVIEW: <UIWebView: 0x6a94510; frame = (0 45; 768 1004); layer = <CALayer: 0x6a94930>> 
2012-10-15 20:04:22.955 SyneBlogApp[2320:c07] loading url http://wordpress.com <UIWebView: 0x6a94510; frame = (0 45; 768 1004); layer = <CALayer: 0x6a94930>> 
2012-10-15 20:04:22.994 SyneBlogApp[2320:c07] webViewDidStartLoad 
2012-10-15 20:04:26.828 SyneBlogApp[2320:c07] webViewDidFinishLoad 

根据笔录我的WebView加载数据完美的，但是当我看看模拟器我得到一个白色的屏幕。这是不显示了内容...

现在只是为了确保没有什么是错的WebView我在DetailViewController viewDiDloadMethod其工作，并显示了谷歌网页下面尝试...

- (void)viewDidLoad 
    { 
    self.webView = [[[UIWebView alloc] 
       initWithFrame:CGRectMake(0, 45, self.view.frame.size.width, self.view.frame.size.height)] autorelease]; 
    NSURL *url = [NSURL URLWithString:@"http://www.google.com"]; 
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; 

    [self.webView loadRequest:requestObj]; 
    [self.view addSubview:self.webView]; 
    [super viewDidLoad]; 
    NSLog(@"calling viewDidLoad for detailView"); 
    } 

现在我真的不知道发生了什么问题。即便所有的东西都在日志以及工作了之后还是网页内容，不显示了..伙计们，如果你有什么错误，请帮助的任何线索......

Answer 1

这...

detailViewController = [[DetailViewController alloc]init]; 

...创建一个新的DetailViewController而不是使用您已经创建并在第一代码段，你表现出了你的显示器的组成部分之一。因此，您正在加载Web视图以查看不在屏幕上的控制器/视图。