Spotify EXC_BAD_EXE第二次点击登录按钮后关闭LoginViewController

Question

您好我整合SpotifyLib CocoaLibSpotify iOS库17-20-26-630到我的项目。我打开它SPLoginViewController使用波纹管方法： -

-(void)OpenSpotify 
{ 
    NSError *error = nil; 


    [SPSession initializeSharedSessionWithApplicationKey:[NSData dataWithBytes:&g_appkey length:g_appkey_size] 
               userAgent:@"com.mycomp.spotify" 
              loadingPolicy:SPAsyncLoadingImmediate 
                error:&error]; 
    if (error != nil) { 
     NSLog(@"CocoaLibSpotify init failed: %@", error); 
     abort(); 
    } 

    [[SPSession sharedSession] setDelegate:self]; 
    [self performSelector:@selector(showLogin) withObject:nil afterDelay:0.0]; 

} 

-(void)showLogin 
{ 
    SPLoginViewController *controller = [SPLoginViewController loginControllerForSession:[SPSession sharedSession]]; 
    controller.allowsCancel = YES; 
    //controller.view.frame=; 
    [self presentViewController:controller animated:YES completion:nil]; 
} 

，第一时间出现Spotify Login屏幕。之后，我点击取消按钮，并尝试再次打开登录屏幕，然后我崩溃EXC_BAD_EXE在这条线。 sp_error createErrorCode = sp_session_create(&config, &_session);

UPDATE

我发现exet其中做大量的搜索之后得到BAD_EXC

在这种方法

+(void)dispatchToLibSpotifyThread:(dispatch_block_t)block waitUntilDone:(BOOL)wait { 

    NSLock *waitingLock = nil; 
    if (wait) waitingLock = [NSLock new]; 

    // Make sure we only queue one thing at a time, and only 
    // when the runloop is ready for it. 
    [runloopReadyLock lockWhenCondition:1]; 

    CFRunLoopPerformBlock(libspotify_runloop, kCFRunLoopDefaultMode, ^() { 
     [waitingLock lock]; 
     if (block) { @autoreleasepool { block(); } } 
     [waitingLock unlock]; 
    }); 

    if (CFRunLoopIsWaiting(libspotify_runloop)) { 
     CFRunLoopSourceSignal(libspotify_runloop_source); 
     CFRunLoopWakeUp(libspotify_runloop); 
    } 

    [runloopReadyLock unlock]; // at hear when my debug poin reach after pass this i got bad_exc 
    if (wait) { 
     [waitingLock lock]; 
     [waitingLock unlock]; 
    } 
} 

Answer 1

我得到了解决办法，我检查是否该会议已经存在，然后我把条件如： -

-(void)OpenSpotify 
{ 

    SPSession *session = [SPSession sharedSession]; 
    if (!session) { 
     NSError *error = nil; 
     [SPSession initializeSharedSessionWithApplicationKey:[NSData dataWithBytes:&g_appkey length:g_appkey_size] 
                userAgent:@"com.mycomp.spotify" 
               loadingPolicy:SPAsyncLoadingImmediate 
                 error:&error]; 
     if (error != nil) { 
      NSLog(@"CocoaLibSpotify init failed: %@", error); 
      abort(); 
     } 
     [[SPSession sharedSession] setDelegate:self]; 

    } 
    [self performSelector:@selector(showLogin) withObject:nil afterDelay:0.0]; 

} 
-(void)showLogin 
{ 

    SPLoginViewController *controller = [SPLoginViewController loginControllerForSession:[SPSession sharedSession]]; 
    controller.allowsCancel = YES; 
    [self presentViewController:controller animated:YES completion:nil]; 
} 

现在没有崩溃和做工精细。