我从Apple下载了UICatalog示例,并只更改了WebViewController类中的默认URL为包含html5-video的网站的URL。结果相同……有时崩溃,有时不崩溃。
我还在Xcode上创建了一个新项目(基于视图的应用程序-针对iPad),并仅向新项目的ViewController中添加了一个UIWebView。同样……加载包含html5-video的网站有时会导致崩溃,有时则不会。
“新项目”ViewController的代码(实现):
- (void)viewDidLoad {
[super viewDidLoad];
self.myWebView = [[[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 768, 1004)] autorelease];
self.myWebView.backgroundColor = [UIColor whiteColor];
self.myWebView.scalesPageToFit = YES;
self.myWebView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
self.myWebView.delegate = self;
[self.view addSubview: self.myWebView];
[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.gelbeseiten.de/129103114849"]]];
//More Sites with HTML5-Videos ...
//[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.gelbeseiten.de/129103746403"]]];
//[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.gelbeseiten.de/129105233646"]]];
}
- (void)viewDidUnload {
[super viewDidUnload];
self.myWebView = nil;
}
- (void)viewWillDisappear:(BOOL)animated {
[self.myWebView stopLoading];
}
- (void)dealloc {
myWebView.delegate = nil;
[myWebView release];
[super dealloc];
}
"新项目"视图控制器(标题)中的代码:
@interface WebViewTestViewController : UIViewController <UIWebViewDelegate> {
UIWebView *myWebView;
}
@property (nonatomic, retain) UIWebView *myWebView;
设备日志:
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000098
Crashed Thread: 0
Thread 0 Crashed:
0 WebCore 0x34c7d09e WebCore::RenderLayer::clippingRoot() const + 110
1 WebCore 0x34c7cf2a WebCore::RenderLayer::childrenClipRect() const + 26
2 WebCore 0x34c7ce0c WebCore::RenderWidget::setWidgetGeometry(WebCore::IntRect const&) + 40
3 WebCore 0x34c5e0f8 WebCore::RenderWidget::updateWidgetPosition() + 320
4 WebCore 0x34ba0170 WebCore::RenderView::updateWidgetPositions() + 144
5 WebCore 0x34b97d16 WebCore::FrameView::performPostLayoutTasks() + 202
6 WebCore 0x34b8a6c0 WebCore::FrameView::layout(bool) + 2116
7 WebCore 0x34bc5244 WebCore::FrameView::forceLayout(bool) + 4
8 WebKit 0x302c0c24 -[WebHTMLView layoutToMinimumPageWidth:height:maximumPageWidth:adjustingViewSize:] + 136
9 WebKit 0x302c0b8e -[WebHTMLView layout] + 18
10 WebKit 0x302c26f2 -[WebHTMLView(WebInternal) _layoutIfNeeded] + 50
11 WebKit 0x302c2622 -[WebHTMLView(WebInternal) _web_layoutIfNeededRecursive] + 14
12 WebKit 0x302c251e -[WebHTMLView(WebPrivate) viewWillDraw] + 50
13 CoreFoundation 0x3581dfc0 -[NSObject(NSObject) performSelector:] + 12
14 CoreFoundation 0x35826d4a -[NSArray makeObjectsPerformSelector:] + 382
15 WebCore 0x34bb000c -[WAKView viewWillDraw] + 24
16 CoreFoundation 0x3581dfc0 -[NSObject(NSObject) performSelector:] + 12
17 CoreFoundation 0x35826d4a -[NSArray makeObjectsPerformSelector:] + 382
18 WebCore 0x34bb000c -[WAKView viewWillDraw] + 24
19 CoreFoundation 0x3581dfc0 -[NSObject(NSObject) performSelector:] + 12
20 CoreFoundation 0x35826d4a -[NSArray makeObjectsPerformSelector:] + 382
21 WebCore 0x34bb000c -[WAKView viewWillDraw] + 24
22 CoreFoundation 0x3581dfc0 -[NSObject(NSObject) performSelector:] + 12
23 CoreFoundation 0x35826d4a -[NSArray makeObjectsPerformSelector:] + 382
24 WebCore 0x34bb000c -[WAKView viewWillDraw] + 24
25 WebKit 0x302c24cc -[WebView(WebPrivate) viewWillDraw] + 56
26 WebCore 0x34bafec0 WebCore::TileCache::prepareToDraw() + 36
27 WebCore 0x34bafe6e -[TileLayer display] + 26
28 QuartzCore 0x31079fb0 CALayerDisplayIfNeeded + 176
29 QuartzCore 0x3106f56e CA::Context::commit_transaction(CA::Transaction*) + 214
30 QuartzCore 0x3106f37c CA::Transaction::commit() + 184
31 QuartzCore 0x31092f96 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 46
32 CoreFoundation 0x3580ac52 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 10
33 CoreFoundation 0x3580aac6 __CFRunLoopDoObservers + 406
34 CoreFoundation 0x358020c4 __CFRunLoopRun + 848
35 CoreFoundation 0x35801c80 CFRunLoopRunSpecific + 224
36 CoreFoundation 0x35801b88 CFRunLoopRunInMode + 52
37 GraphicsServices 0x320c84a4 GSEventRunModal + 108
38 GraphicsServices 0x320c8550 GSEventRun + 56
39 UIKit 0x341dc322 -[UIApplication _run] + 406
40 UIKit 0x341d9e8c UIApplicationMain + 664
41 WebViewTest 0x00002c24 0x1000 + 7204
42 WebViewTest 0x00002bd8 0x1000 + 7128
有人能给我提供一个想法吗?
先行致谢,Florian