Xcode 协助编码

Question

我想弄清楚如何为 html 文件做扩展。我是编码和 Xcode 的新手，并试图创建一个应用程序，但我有足够的编码经验来理解什么去哪里以及为什么去。

我面临的问题是我需要为 html 文件添加扩展名；例子

(index.html?lc=uk) 而不是 (index.html)。

我已经创建了一个界面和所需的所有其他信息，但我似乎无法让这部分工作。我在 ViewController.m 上使用的编码是；

[super viewDidLoad];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"354"];
    NSURL *url = [NSURL fileURLWithPath:path];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webview loadRequest:request];

我尝试添加到 (pathForResource) @"index.html?lc=uk" 但是当我测试应用程序时它不起作用并给我一个错误。

有人可以告诉我我需要做什么吗？

亲切的问候，

Seb

[日志文件]

2015-06-22 12:48:53.845 UST Demo[3999:1153643] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSURL initFileURLWithPath:]: nil string parameter'
*** First throw call stack:
(
    0   CoreFoundation                      0x008d0746 __exceptionPreprocess + 182
    1   libobjc.A.dylib                     0x00559a97 objc_exception_throw + 44
    2   CoreFoundation                      0x008d066d +[NSException raise:format:] + 141
    3   Foundation                          0x0010edfe -[NSURL(NSURL) initFileURLWithPath:] + 139
    4   Foundation                          0x0010ed58 +[NSURL(NSURL) fileURLWithPath:] + 68
    5   UST Demo                            0x000768d5 -[ViewController viewDidLoad] + 213
    6   UIKit                               0x00df3da4 -[UIViewController loadViewIfRequired] + 771
    7   UIKit                               0x00df4095 -[UIViewController view] + 35
    8   UIKit                               0x00ce5e85 -[UIWindow addRootViewControllerViewIfPossible] + 66
    9   UIKit                               0x00ce634c -[UIWindow _setHidden:forced:] + 287
    10  UIKit                               0x00ce6648 -[UIWindow _orderFrontWithoutMakingKey] + 49
    11  UIKit                               0x0c5c9028 -[UIWindowAccessibility _orderFrontWithoutMakingKey] + 77
    12  UIKit                               0x00cf49b6 -[UIWindow makeKeyAndVisible] + 80
    13  UIKit                               0x00c89ed8 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 3217
    14  UIKit                               0x00c8d422 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1639
    15  UIKit                               0x00ca693e __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke + 59
    16  UIKit                               0x00c8c04a -[UIApplication workspaceDidEndTransaction:] + 155
    17  FrontBoardServices                  0x03232c9e __37-[FBSWorkspace clientEndTransaction:]_block_invoke_2 + 71
    18  FrontBoardServices                  0x0323272f __40-[FBSWorkspace _performDelegateCallOut:]_block_invoke + 54
    19  FrontBoardServices                  0x03244d7c __31-[FBSSerialQueue performAsync:]_block_invoke_2 + 30
    20  CoreFoundation                      0x007f2050 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 16
    21  CoreFoundation                      0x007e7963 __CFRunLoopDoBlocks + 195
    22  CoreFoundation                      0x007e77bb __CFRunLoopRun + 2715
    23  CoreFoundation                      0x007e6a5b CFRunLoopRunSpecific + 443
    24  CoreFoundation                      0x007e688b CFRunLoopRunInMode + 123
    25  UIKit                               0x00c8ba02 -[UIApplication _run] + 571
    26  UIKit                               0x00c8f106 UIApplicationMain + 1526
    27  UST Demo                            0x00076dfa main + 138
    28  libdyld.dylib                       0x02c5cac9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

[大麦]

[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"354"];
path = [NSString stringWithFormat:@"%@?lc=uk", path]; // add the '?lc=uk'
NSURL *url = [NSURL URLWithString:path]; // build URL with string
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webview loadRequest:request];

当我添加此代码时，我收到此错误

int main(int argc, char * argv[]) {
@autoreleasepool {
    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}

}

Answer 1

如果我没听错，你需要像这样更改 NSString* 路径：

path = [NSString stringWithFormat:@"%@?lc=uk", path];

但是，如果从未尝试过用于本地路径 ([NSURL fileURLWithPath:path];)，也许您应该使用 [NSURL URLWithString:path];？您是否将 HTML 文件作为资源，或者您正在尝试访问远程源？

对于本地源，最终甚至不考虑 GET 参数，因为没有安装 PHP 或其他任何东西作为 HTML 文件的处理器。

编辑：

您的来源：

[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"354"];
NSURL *url = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webview loadRequest:request];

新来源：

[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"354"];
path = [NSString stringWithFormat:@"%@?lc=uk", path]; // add the '?lc=uk'
NSURL *url = [NSURL URLWithString:path]; // build URL with string
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webview loadRequest:request];

希望对你有所帮助。