UIProgressView不显示进度

Question

我不明白我在哪里打蛋。我需要更新progreesView的进度。我在IB中创建UIProgressView并仅更改颜色。我有财产和下一个代码

@property (weak, nonatomic) IBOutlet UIProgressView *progressView;

属性连接到IB的插座

- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"DefaultSS.png"]];
}


- (void) viewDidAppear:(BOOL)animated
{
  [self connectToServer];
}


- (void) connectToServer
{
  //some code...
    sleep(2);
[self.progressView setProgress:0.2 animated:YES];
sleep(1);
[self.progressView setProgress:0.4 animated:YES];
sleep(1);
[self.progressView setProgress:0.7 animated:YES];
sleep(1);
[self.progressView setProgress:1.0 animated:YES];
sleep(1);
 //some code...
 }

睡眠效果很好，但UIProgressView的进度不随时间变化。我错的地方？

Answer 1

sleep（）阻塞主线程，因此不会发生UI更新。您需要使用NSTimer或类似的东西。