Javascript 我的iPhone应用程序中未调用shouldStartLoadWithRequest
我有一个带有UIWebView控制器的视图控制器。我试图让javascript包含在web视图的html内容中，以便将一些信息传递给我的目标c代码。我在网上遇到了许多示例，这些示例在javascript函数中设置window.location，然后通过将视图控制器设置为web视图的委托并在shouldStartLoadWithRequest函数中捕获它来捕获生成的事件。不幸的是，我无法让它工作，因为对我来说，shouldStartLoadWithRequest从未被调用，即使我正在设置web视图的委托 我的代码如下： 界面：Javascript 我的iPhone应用程序中未调用shouldStartLoadWithRequest,javascript,iphone,objective-c,cocoa-touch,event-handling,Javascript,Iphone,Objective C,Cocoa Touch,Event Handling,我有一个带有UIWebView控制器的视图控制器。我试图让javascript包含在web视图的html内容中，以便将一些信息传递给我的目标c代码。我在网上遇到了许多示例，这些示例在javascript函数中设置window.location，然后通过将视图控制器设置为web视图的委托并在shouldStartLoadWithRequest函数中捕获它来捕获生成的事件。不幸的是，我无法让它工作，因为对我来说，shouldStartLoadWithRequest从未被调用，即使我正在设置web视图
@interface StoryTextViewController : UIViewController <UIWebViewDelegate>
{
IBOutlet UIWebView *storyWebView;
NSString *information;
}
@property (nonatomic, retain) IBOutlet UIWebView *storyWebView;
@property (nonatomic, retain) NSString *information;
@end
@interface StoryTextViewController:UIViewController
{
ibuiwebview*故事webview；
NSString*信息；
}
@属性（非原子，保留）IBUIWebView*storyWebView；
@属性（非原子，保留）NSString*信息；
@结束
#import "StoryTextViewController.h"
@implementation StoryTextViewController
@synthesize storyWebView;
@synthesize information;
- (NSString *) contructHTMLText
{
NSString *HTMLText = @"";
NSArray *words = [information componentsSeparatedByString:@" "];
NSString *header =
@"<html>\n"
"<head>\n"
"<script type=\"text/javascript\">\n"
"function marktext(theSpanID)\n"
"{\n"
" var theSpan=document.getElementById(theSpanID);\n"
" if (theSpan.className == \"noHilite\")\n"
" {\n"
" theSpan.className = \"hilite\";\n"
" window.location = \"true\";\n"
" }\n"
" else\n"
" {\n"
" theSpan.className = \"noHilite\";\n"
" window.location = \"false\";\n"
" }\n"
"}\n"
"</script>\n"
"<style type=\"text/css\">\n"
".hilite\n"
"{\n"
" background-color:red;\n"
" color:white;\n"
" font: bold 60px arial,sans-serif\n"
"}\n"
".noHilite\n"
"{\n"
" background-color:white;\n"
" color:black;\n"
" font: 60px arial,sans-serif\n"
"}\n"
"</style>\n"
"</head>\n"
"<body>\n"
"<div class=\"storyText\">\n";
NSString *tailer =
@"</div>\n"
"</body>\n"
"</html>\n";
HTMLText = [HTMLText stringByAppendingString:header];
for (NSInteger i = 0; i < [words count]; i ++)
{
NSString *tag = [NSString stringWithFormat:@" <span id=\"mytext%d\" class=\"noHilite\" onclick=\"marktext(\'mytext%d\')\">%@</span> \n", i, i, (NSString *)[words objectAtIndex:i]];
HTMLText = [HTMLText stringByAppendingString:tag];
}
HTMLText = [HTMLText stringByAppendingString:tailer];
NSLog(HTMLText);
return HTMLText;
}
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
storyWebView.delegate = self;
}
return self;
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *HTMLData = [self contructHTMLText];
[storyWebView loadHTMLString:HTMLData baseURL:[NSURL URLWithString: @""]];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
// Release anything that's not essential, such as cached data
}
- (void)dealloc {
[super dealloc];
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
// handle event here
return true;
}
@end
#导入“StoryTextViewController.h”
@StoryTextViewController的实现
@综合故事网络视图；
@综合信息；
-（NSString*）构造HTMLText
{
NSString*HTMLText=@；
NSArray*words=[由字符串分隔的信息组件：@”“；
NSString*标题=
@“\n”
“\n”
“\n”
“函数标记文本（窗格ID）\n”
“{\n”
“var theSpan=document.getElementById（theSpan）；\n”
“如果（theSpan.className=\'noHilite\”）\n
“{\n”
“theSpan.className=\“hilite\”；\n”
“window.location=\“true\”；\n”
“}\n”
“否则\n”
“{\n”
“theSpan.className=\“noHilite\”；\n”
“window.location=\“false\”；\n”
“}\n”
“}\n”
“\n”
“\n”
“.hilite\n”
“{\n”
“背景色：红色；\n”
“颜色：白色；\n”
字体：粗体60px arial，无衬线\n
“}\n”
“.noHilite\n”
“{\n”
“背景色：白色；\n”
“颜色：黑色；\n”
字体：60px arial，无衬线\n
“}\n”
“\n”
“\n”
“\n”
“\n”；
NSString*tailer=
@“\n”
“\n”
“\n”；
HTMLText=[HTMLText stringByAppendingString:header]；
对于（NSInteger i=0；i<[字数]；i++）
{
NSString*标记=[NSString stringWithFormat:@“%@\n”，i，i，（NSString*）[words objectAtIndex:i]]；
HTMLText=[HTMLText stringByAppendingString:tag]；
}
HTMLText=[HTMLText stringByAppendingString:tailer]；
NSLog（HTMLText）；
返回HTMLText；
}
//指定的初始值设定项。覆盖以执行加载视图之前所需的设置。
-（id）initWithNibName:（NSString*）nibNameOrNil bundle:（NSBundle*）nibBundleOrNil{
if（self=[super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]）{
storyWebView.delegate=self；
}
回归自我；
}
//实现viewDidLoad以在加载视图（通常从nib）后执行附加设置。
-（无效）viewDidLoad
{
[超级视图下载]；
NSString*HTMLData=[self-constructHTMLText]；
[storyWebView加载HtmlString:HTMLData baseURL:[NSURL URLWithString:@”“]；
}
-（无效）未收到记忆警告{
[super-didReceiveMemoryWarning]；//如果没有superview，则释放该视图
//释放任何不重要的内容，例如缓存数据
}
-（无效）解除锁定{
[super dealoc]；
}
-（BOOL）webView:（UIWebView*）webView应加载WithRequest:（NSURLRequest*）请求导航类型：（UIWebViewNavigationType）导航类型
{
//在这里处理事件
返回true；
}
@结束
window.locationmarktexttruefalseshouldStartLoadWithRequestshouldStartLoadWithRequest窗口位置可能存在一些计时问题您可以在设置委托时设置断点
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
storyWebView.delegate = self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *HTMLData = [self contructHTMLText];
// empty statement
// the trick is that if the view is not loaded from the .nib yet
// it will be loaded and all connections established
if (self.view);
// here is setting delegate
storyWebView.delegate = self;
[storyWebView loadHTMLString:HTMLData baseURL:[NSURL URLWithString: @""]];
}
我也看到了这个问题，因为我已经设置了
articleWeb.userInteractionEnabled = NO;`
articleWeb.userInteractionEnabled = YES;`
您应该在
viewDidLoadinitWithNibName:bundle: