NSProgressIndicator不会消失（确定）
我有一个确定的进度指示器。它的工作方式正如我所期望的那样，但在达到 maxValue 后它不会消失。我已将进度指示器设置为在 main.nib 文件中停止时不显示，我还将其输入到 awakeFromNib{} 方法中。 我在例程末尾放置了一个日志，以确保 [displayWhenStopped] 设置仍然设置为“否”，而且确实如此。
这是我的代码：
-(void)getEvents:(NSURL *)mffFile{
NSMutableArray * eventTypeResults =[[NSMutableArray alloc]init];
EWaveformRecording *ptrToRcdFile = [EWaveformRecording openRecording:mffFile permission:readOnly user:nil convertFileFormat:NO openReadOnlyAnyway:NO];
NSArray *events = [ptrToRcdFile getEvents];
//get the size of events for the progressbar and instantiate a loop counter
NSInteger total = [events count];
int loop = 0;
//set progress bar params
[self->meter_ setUsesThreadedAnimation:YES];
[self->meter_ setControlSize:NSMiniControlSize];
[self->meter_ setMaxValue:(double)total];
for(EEvent* event in events){
loop ++;
if(![eventTypeResults containsObject:event.code]){
NSLog(@"check eventNames in getEvents %@", event.code);
[eventTypeResults addObject: event.code];
}//end if
//display loop increment in progress bar
[self->meter_ setDoubleValue:(1000*(double)loop)/1000];
}//end for
//send the eventTypesResults array to the EventExport class
[evtPtr setEventsAvailableList:eventTypeResults];
}
我尝试过的：
有和没有[setUsesThreadedAnimation]，我不完全理解；它确实减慢了进度条，使其看起来更好，但文档说只有不确定的类型才应该受到动画的影响。
我尝试过使用 [start &停止动画] 我在循环后尝试过 [setDisplayWhenStopped:NO]
非常感谢任何帮助 麦克风
I have a determinate progress indicator. It is working just like I would expect it to but it does not disappear after it reaches maxValue. I have set the progress indicator to not display when stopped in the main.nib file, I have also entered it into the awakeFromNib{} method.
I put a log at the end of the routine to make sure the [displayWhenStopped] setting was still set to NO and it is.
Here is my code :
-(void)getEvents:(NSURL *)mffFile{
NSMutableArray * eventTypeResults =[[NSMutableArray alloc]init];
EWaveformRecording *ptrToRcdFile = [EWaveformRecording openRecording:mffFile permission:readOnly user:nil convertFileFormat:NO openReadOnlyAnyway:NO];
NSArray *events = [ptrToRcdFile getEvents];
//get the size of events for the progressbar and instantiate a loop counter
NSInteger total = [events count];
int loop = 0;
//set progress bar params
[self->meter_ setUsesThreadedAnimation:YES];
[self->meter_ setControlSize:NSMiniControlSize];
[self->meter_ setMaxValue:(double)total];
for(EEvent* event in events){
loop ++;
if(![eventTypeResults containsObject:event.code]){
NSLog(@"check eventNames in getEvents %@", event.code);
[eventTypeResults addObject: event.code];
}//end if
//display loop increment in progress bar
[self->meter_ setDoubleValue:(1000*(double)loop)/1000];
}//end for
//send the eventTypesResults array to the EventExport class
[evtPtr setEventsAvailableList:eventTypeResults];
}
What I have tried:
with and without [setUsesThreadedAnimation] which I don't totally understand; it does slow down the progress bar which makes it look better but the docs say only indeterminate types should be effected by animation.
I have tried using [start & stop animation]
I have tried [setDisplayWhenStopped:NO] after my loop
Any help is greatly appreciated
MIke
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这是我学到的。
我不应该允许进度条在不同的线程上运行，即使它看起来像是在工作，因为 NSProgressIndicator 无法再响应主线程中的设置，因此正确的做法是不要实例化该方法，但是，这不是我的问题的解决方案；我做的其他所有事情都是正确的，但主线程无法重绘进度，因为它正忙于 UI 中的所有其他调用。解决方案是实现 NSRunLoop，以便循环的每次迭代都会中断主线程并重绘进度表，然后返回控制权。
This is what I learned.
I should not be allowing the progress bar to run on a different thread even though it looks like its working because the NSProgressIndicator can no longer respond to the settings in the main thread, so the proper thing to do is to not instantiate that method, however , that was not the solution to my problem; I was doing everything else right, but the main thread could not redraw the progress because it's busy with all the other calls in the UI. The solution was to implement NSRunLoop so that each iteration of the loop interrupts the main thread and redraws the progress meter , then returns control.