我正在使用基于NSOutlineView的视图,我想将NSSlider和NSTextfield绑定到NSDictionary键(@“”duration“)。字典是我的NSTableCellView子类的属性。我在遇到错误时试图设置绑定:
错误:
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<NSApplication 0x100506400> addObserver:<NSTextValueBinder 0x102609a90> forKeyPath:@"info.duration" options:0 context:0x10260c820] was sent to an object that is not KVC-compliant for the "info" property.'
.H:
#import <Cocoa/Cocoa.h>
@interface ObjectFileTableCellView : NSTableCellView {
NSTextField *_textFieldFilePath;
NSTextField *_textFieldDesription;
NSButton *_checkBox;
NSDictionary* _info;
NSSlider* _slider;
NSTextField* _labelStartTime;
}
@property(retain) IBOutlet NSTextField *textFieldFilePath;
@property(retain) IBOutlet NSTextField *textFieldDescription;
@property(retain) IBOutlet NSTextField *labelStartTime;
@property(retain) IBOutlet NSSlider *slider;
@property(retain) IBOutlet NSButton *checkBox;
@property(retain) NSDictionary* info;
@end
.m:
- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item{
if ([[tableColumn identifier] isEqualToString:@"Files"]) {
if ([item isKindOfClass:[OMN_Object class]])
{
// DONE - (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item { if([[tableColumn identifier] isEqualToString:@“Files”]){
if ([item isKindOfClass:[OMN_Object class]])
{
OMN_Object *o = item;
ObjectFileTableCellView *v = [outlineView makeViewWithIdentifier:@"FileCell" owner:self]; // File'S owner
hide = NO;
NSString* d = [o.fileInfoDetails valueForKey:@"duration"];
[v.slider setMinValue:0];
[v.slider setMaxValue:[d doubleValue]];
NSString *val = [NSString stringWithFormat:@"%f", v.slider.doubleValue];
[v.labelStartTime setStringValue:val];
[o.fileInfoDetails setValue:val forKey:@"startTime"];
v.info = o.fileInfoDetails;
...
我的NSOutlineView视图:
NSTableColumn:
NSTextField绑定设置:
想要的结果:
如何设置绑定以获得我想要的内容?
答案 0 :(得分:0)
您尝试将info.duration
绑定到单元格本身,而不是文本字段,假设“文件所有者”确实是您的ObjectFileTableCellView
。
配置绑定时使用labelStartTime
作为控制器密钥。
仔细检查滑块的绑定配置;你可能犯了类似的错误。
答案 1 :(得分:0)
如前所述,文件的Owner.info.duration毫无意义,因为文件的所有者是一个非常类的概述。字典Info是ObjectFileTableCellView的一个属性。
我以编程方式将NSTextfield绑定到info.duration,它工作得很好!