NSTableView不顯示objectValueForTableColumn方法的返回值

無論我返回什麼內容，表格視圖都將只顯示手動設置的顯示文本（NSTextField的'標題'）.xib文件中。請幫我弄清楚我做錯了什麼。謝謝。NSTableView不顯示objectValueForTableColumn方法的返回值

我的NSTableView只有1列。

下面是代碼：

#import "DeviceSettingsController.h" 
#import <ImageCaptureCore/ImageCaptureCore.h> 

@interface DeviceSettingsController() 
@property (weak) IBOutlet NSTableView *tableViewScanners; 
@property (weak) IBOutlet NSMatrix *checkBoxes; 
@property NSMutableArray *availableScanners; 
@property ICDeviceBrowser *deviceBrowser; 
@end 

@implementation DeviceSettingsController 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    _availableScanners = [[NSMutableArray alloc] init]; 
    _deviceBrowser = [[ICDeviceBrowser alloc] init]; 
    _tableViewScanners.delegate = self; 
    _tableViewScanners.dataSource = self; 
    _deviceBrowser.browsedDeviceTypeMask = ICDeviceTypeMaskScanner | ICDeviceLocationTypeMaskLocal | ICDeviceLocationTypeMaskShared | ICDeviceLocationTypeMaskBluetooth | ICDeviceLocationTypeMaskBonjour; 
    _deviceBrowser.delegate = self; 
    [_deviceBrowser start];  
} 

- (id)initWithMainView:(NSView *)_theView AndMainController:(NSViewController *)_theViewController AndNibName:(NSString *)nibName AndArgs:(NSArray *)_args { 
    self = [super initWithMainView:_theView AndMainController:_theViewController AndNibName:nibName AndArgs:_args]; 
    return self; 
} 

- (void)deviceBrowser:(ICDeviceBrowser *)browser didAddDevice:(ICDevice *)device moreComing:(BOOL)moreComing { 
    [_availableScanners addObject:device]; 
    [_tableViewScanners reloadData]; 
} 

- (void)deviceBrowser:(ICDeviceBrowser *)browser didRemoveDevice:(ICDevice *)device moreGoing:(BOOL)moreGoing { 
    [_availableScanners removeObject:device]; 
    [_tableViewScanners reloadData]; 
} 

- (void)didRemoveDevice:(ICDevice *)device { 

} 

- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView { 
    return [_availableScanners count]; 
} 

- (id)tableView:(NSTableView *)tableView objectValueForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row { 
    NSString *retVal = [((ICScannerDevice *)[_availableScanners objectAtIndex:row]) name]; 

    return retVal; 
} 
@end

來源

2014-11-05 AyushISM

看到我的答案[這裏]（https://stackoverflow.com/questions/26330468/nsoutlineview-object-value-is-being-returned-but-only-the-placeholder-title/26331214#26331214）。 – 2014-11-06 01:28:34

是基於實現代碼如下內容模式細胞或查看基於？我認爲它是基於視圖，因爲您提到了廈門國際銀行因此而不是objectValueForTableColumn（基於細胞的），你必須使用

- (NSView *)tableView:(NSTableView *)tableView viewForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row

另見Apple Docs，所以一個典型的實現將是如下

- (NSView *)tableView:(NSTableView *)tableView 
    viewForTableColumn:(NSTableColumn *)tableColumn 
        row:(NSInteger)row { 

     // Retrieve to get the @"MyView" from the pool or, 
     // if no version is available in the pool, load the Interface Builder version 
     NSTableCellView *result = [tableView makeViewWithIdentifier:@"MyView" owner:self]; 

     // Set the stringValue of the cell's text field to the nameArray value at row 
     result.textField.stringValue = [self.nameArray objectAtIndex:row]; 

     // Return the result 
     return result; 
}

來源

2014-11-06 00:24:53 Cory

NSTableView不顯示objectValueForTableColumn方法的返回值

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