xcode NSTableView 更改一行的文本颜色
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NSTableView Changing Text Color for a row
提问by Amitg2k12
I need to change following properties for my NSTable View 1 -- Change Color:Row Color and Text Color when its selected 2 -- Change the Text Color , for each row it depends upon some input parameter,
我需要为我的 NSTable 视图更改以下属性 1 -- 选择时更改颜色：行颜色和文本颜色 2 -- 更改文本颜色，对于每一行，它取决于某些输入参数，
For changing textcolor for each row, i should override delegate method willDisplayCell, This is what i have done , till now,
为了改变每一行的文本颜色，我应该覆盖委托方法 willDisplayCell，这就是我所做的，直到现在，
-- Creating the table ----
-- 创建表 ----
pMyTableView = [[[CustomTableView alloc] initWithFrame:clipViewBounds] autorelease];
NSTableColumn* firstColumn = [[[NSTableColumn alloc] initWithIdentifier:@"firstColumn"] autorelease];
[firstColumn setWidth:35];
[pMyTableView addTableColumn:firstColumn];
NSTableColumn* secondColumn = [[[NSTableColumn alloc] initWithIdentifier:@"secondColumn"] autorelease];
[secondColumn setWidth:180];
[pMyTableView addTableColumn:secondColumn];
[pMyTableView setRowHeight:30];
[self SetContactTableDisplayAttribute];
[pMyTableView setDataSource:self];
[scrollView setDocumentView:pOnLineCTView];
[pMyTableView setDelegate:self]
;
--- Other delegate Method -------------
--- 其他委托方法 -------------
- (id) tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex{
if([pColName isEqualToString:@"secondColumn"])
{
// Here there is some logic , to get the proper string that i wanted to display
return @"tempString";
}
}
---- Now this is how i am setting the text color ---
---- 现在这就是我设置文本颜色的方式 ---
- (void)tableView:(NSTableView *)aTableView willDisplayCell:(id)aCell forTableColumn:(NSTableColumn *)aTableColumn row:(int)rowIndex {
NSString *colName = [aTableColumn identifier];
if([colName isEqualToString:@"secondColumn"]){
NSTextFieldCell *pCell = aCell;
[pCell setTextColor:[NSColor blueColor]];
}
}
With the above code, its going to exception in the Log, i could see the line -[NSCell setTextColor:]: unrecognized selector sent to instance Looks like somewhere i need to set the text Field cell, but how and where i have no idea, kindly help me,
使用上面的代码，它会在日志中出现异常，我可以看到行 -[NSCell setTextColor:]: unrecognized selector sent to instance 看起来像我需要设置文本字段单元格的地方，但我不知道如何以及在哪里，请帮助我，
Another thing is, Initially i don't need any background for cell, but once when cell is selected , then also i might need to change the Background or you can say highlight color, can i get the same in WillDIsplayCell too
另一件事是，最初我不需要任何单元格背景，但是一旦选择了单元格，那么我也可能需要更改背景，或者您可以说突出显示颜色，我也可以在 WillDIsplayCell 中获得相同的效果
回答by sosborn
It has been a while since I have done this but I always refer to this blog post by Corbin Dunn when I need to do it: Cocoa: willDisplayCell delegate method of NSTableView, [NSCell setTextColor], and “source lists”
我已经有一段时间没有这样做了，但是当我需要这样做时，我总是参考 Corbin Dunn 的这篇博文：Cocoa：NSTableView 的 willDisplayCell 委托方法、[NSCell setTextColor] 和“源列表”
By the way, Corbin works at Apple and from what I understand is responsible for NSTableView. When he blogs about anything Cocoa I always be sure to bookmark it.
顺便说一下，Corbin 在 Apple 工作，据我所知负责 NSTableView。当他在博客上发表关于可可的任何内容时，我总是确保将其加入书签。
