Question

我必须在视图中调用三个Web服务。我正在使用ASIHttprequest电话。我将一个接一个地调用每个Web服务。它会导致崩溃

-[INetServices respondsToSelector:]: message sent to deallocated instance 0x12629a10

我如何克服这个错误的请求错误。

HUDadmin = [[MBProgressHUD alloc] initWithView:self.view];

[self.view addSubview:HUDadmin];
HUDadmin.delegate = self;
HUDadmin.labelText =@"Loading";
//[HUD hide:YES afterDelay:20];
[HUDadmin showWhileExecuting:@selector(adminCheck) onTarget:self withObject:nil animated:YES];

其中adminCheck如下：

-(void)adminCheck
{
    INetServices *inetadmin=[[INetServices alloc]init];

    NSString *response = [inetadmin doHTTPPostadmincheck:getUserId comm_id:str_commId];

    if (!response) {
        NSLog(@"response nil ");

        return;
    }
    NSMutableArray *jsonarrayResponse=[response JSONValue];
    NSLog(@"Admin:%@",jsonarrayResponse);
    str_adminStatus = [jsonarrayResponse valueForKey:@"admin_status"];
    if ([[jsonarrayResponse valueForKey:@"status"] isEqualToString:@"success"]==TRUE)
    {
        if ([[jsonarrayResponse valueForKey:@"message"]isEqualToString:@"Admin user!."]==TRUE)
        {
            int_adminStatus=1;
        }
        else
        {
            int_adminStatus=0;
        }
    }
    [self performSelectorOnMainThread:@selector(hideProgress) withObject:nil waitUntilDone:NO];

    [self performSelectorOnMainThread:@selector(CommunityDetailwebservice)
                           withObject:nil waitUntilDone:NO];
}

Answer 1

根据到目前为止提供的内容，很难准确确定僵尸的来源是什么。 exception breakpoint或堆栈跟踪可能会缩小范围。

话虽如此，我发现在调用showWhileExecuting时对其他方法的异步调用有点令人担忧，特别是因为hideProgress试图隐藏您当前正在显示的HUD。

我倾向于重构此代码，并将HUD传递给选择器，以便运行所有三种Web服务：

MBProgressHUD *hud = [[MBProgressHUD alloc] initWithView:self.view];
[self.view addSubview:hud];
[hud showWhileExecuting:@selector(performWebServiceRequests:) onTarget:self withObject:hud animated:YES];

这样，performWebServiceRequests:更新HUD并执行各种同步Web服务请求：

- (void)performNetworkRequests:(MBProgressHUD *)hud
{
    hud.labelText = @"step 1";
    [self adminCheck];

    hud.labelText = @"step 2";
    [self communityDetailWebService];

    hud.labelText = @"step 3";
    [self thirdWebService];
}

如果您需要调用后一个Web服务取决于之前的Web服务是否成功，您可以相应地调整performWebServiceRequests。例如，如果这三个Web服务方法在成功时返回TRUE，或者在失败时返回FALSE，则可以执行以下操作：

- (void)performNetworkRequests:(MBProgressHUD *)hud
{
    hud.labelText = @"step 1";
    if (![self adminCheck])
        return;

    hud.labelText = @"step 2";
    if (![self communityDetailWebService])
        return;

    hud.labelText = @"step 3";
    [self thirdWebService];
}

无论如何，当您从performWebServiceRequests方法返回时，HUD将自动被解雇。

由于多个后台webservice调用导致ios崩溃

1 个答案: