发生awakefromnib后约10秒,ProgressIndicator才会更新。

当文档加载到视图中时,我一直在尝试让我的UI的这一部分立即更新。awakefromnib触发粘贴的代码,然后启动计时器,每10秒重复一次…

我加载默认存储位置:~/电影…马上就会出现……然而,保存在从XML中提取的文档中的网络位置似乎只在第二次触发-(void)updatediskspacedisplay计时器后出现。

我已经设置了断点,并且知道包含要放入*文件系统属性中的值的ivar是发生awakefromnib时的网络位置…

我很困惑为什么它会在第二次触发后神奇地出现,而不是立即显示写入值。

   - (void)updateDiskSpaceDisplay
{
 // Obtain information about the file system used on the selected storage path.
 NSError *error = NULL;
 NSDictionary *fileSystemAttributes =  [[NSFileManager defaultManager] attributesOfFileSystemForPath:[[[self settings] containerSettings] storagePath] error:&error];

 if( !fileSystemAttributes ) return;

 // Get the byte capacity of the drive.
 long long byteCapacity = [[fileSystemAttributes objectForKey:NSFileSystemSize] unsignedLongLongValue];

 // Get the number of free bytes.
 long long freeBytes = [[fileSystemAttributes objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];

 // Update the level indicator, and the text fields to show the current information.
 [totalDiskSpaceField setStringValue:[self formattedStringFromByteCount:byteCapacity]]; 
 [totalDiskSpaceField setNeedsDisplay:YES];

 [usedDiskSpaceField setStringValue:[self formattedStringFromByteCount:(byteCapacity - freeBytes)]];
 [usedDiskSpaceField setNeedsDisplay:YES];
 [diskSpaceIndicator setMaxValue:100];
 [diskSpaceIndicator setIntValue:(((float) (byteCapacity - freeBytes) / (float) byteCapacity) * 100.0)];
 [diskSpaceIndicator display:YES];
}

思想?

我的灵感来自笔尖:

- (void)awakeFromNib
{
     [documentWindow setAcceptsMouseMovedEvents:YES];
 [documentWindow setDelegate:self];

 [self updateSettingsDisplay];

 [self updateDiskSpaceDisplay];
 [self setDiskSpaceUpdateTimer:[NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(updateDiskSpaceDisplay) userInfo:NULL repeats:YES]];

 [self setUpClipInfoTabButtons];

 [self performSelector:@selector(setupEngineController) withObject:NULL afterDelay:0.1];
}