Question

我使用UIWebView加载此网站http://www.xiami.com/song/1024665

如果我触摸视图或播放此网站中的音频，有时我的应用会崩溃，有时它不会，为什么？
是因为html5？怎么解决？其他网站没问题。

崩溃日志是 * - [MPTransportButton _isChargeEnabled]：发送到解除分配的实例0x20aa58d0的消息

非常感谢任何帮助

--- ---更新

我创建了一个新的基于视图的项目，ViewController中的代码如下

这一次，崩溃日志是

2011-08-16 18:11:25.450 WebTest[1291:707] -[__NSCFDictionary _isChargeEnabled]: unrecognized selector sent to instance 0x1ede0a10
2011-08-16 18:11:25.462 WebTest[1291:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary _isChargeEnabled]: unrecognized selector sent to instance 0x1ede0a10'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x30ea764f __exceptionPreprocess + 114
    1   libobjc.A.dylib                     0x349c2c5d objc_exception_throw + 24
    2   CoreFoundation                      0x30eab1bf -[NSObject(NSObject) doesNotRecognizeSelector:] + 102
    3   CoreFoundation                      0x30eaa649 ___forwarding___ + 508
    4   CoreFoundation                      0x30e21180 _CF_forwarding_prep_0 + 48
    5   UIKit                               0x30f232bd -[UIWindow warpPoint:] + 200
    6   UIKit                               0x30f0c1d5 _UIApplicationHandleEvent + 2404
    7   GraphicsServices                    0x30790e77 PurpleEventCallback + 666
    8   CoreFoundation                      0x30e7ea97 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
    9   CoreFoundation                      0x30e8083f __CFRunLoopDoSource1 + 166
    10  CoreFoundation                      0x30e8160d __CFRunLoopRun + 520
    11  CoreFoundation                      0x30e11ec3 CFRunLoopRunSpecific + 230
    12  CoreFoundation                      0x30e11dcb CFRunLoopRunInMode + 58
    13  GraphicsServices                    0x3079041f GSEventRunModal + 114
    14  GraphicsServices                    0x307904cb GSEventRun + 62
    15  UIKit                               0x30f37d69 -[UIApplication _run] + 404
    16  UIKit                               0x30f35807 UIApplicationMain + 670
    17  WebTest                             0x00013425 main + 48
    18  WebTest                             0x000133f0 start + 40
)
terminate called after throwing an instance of 'NSException'

项目中的源代码，这次不使用MPMoviePlayerController或其他东西

 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [self init];
    return self;
}

- (id)init
{
    if (self = [super initWithNibName:nil bundle:nil])
    {
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIWebView *web = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
    [web loadRequest:[NSURLRequest requestWithURL:
                      [NSURL URLWithString:@"http://www.xiami.com/song/1024665"]]];
    web.delegate = self;
    [self.view addSubview:web];
    [web release];
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    return YES;
}
- (void)webViewDidStartLoad:(UIWebView *)webView
{
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    //[webView stringByEvaluatingJavaScriptFromString:@"window.scrollTo(0, 10);"];
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
}

Answer 1

您发布的代码没有错。

NSZombie表示您的代码中某处MPTransportButton之前已被解除分配（已发布），之后，代码中的其他位置，您希望对其执行某些操作。

我认为您是通过UIWebView的委托方法之一来完成的。

但是...... 我们需要更多代码。您alloc/init MPMoviePlayerController的哪个位置alloc/init？或者您MPTransportButton {{1}}？

UIWebView加载崩溃[__NSCFDictionary _isChargeEnabled]

1 个答案: