完成awakeFromNib后，子视图消失
我有一个NSBox子视图的视图（启用了CA的阴影），我试图在awakeFromNib期间动态地将我的NSView子类添加到框中。
根据用户的不同，这些NSView会有不同的数量，因此我制作了一些代码，用于确定要在框中很好地排列它们的行数和列数。 （我已经考虑过NSMatrix，但它没有像我想要的那样布局）
问题是awakeFromNib方法完成后，子视图突然消失！
我已经放了很多NSLog语句来尝试跟踪它，我发现所有的子视图都会在它们消失之前被添加到NSBox中。运行应用程序时，子视图只是短暂显示，然后在动画结束时消失。
这是我的awakeFromNib方法：
-(void)awakeFromNib
{
//Fill an array with buttons for each company object
buttons = [[NSMutableArray alloc] init];
for (BCCompany *c in [[[BCParser sharedParser] managedObjectContext] fetchObjectsForEntityName:@"BCCompany" withPredicate:nil andSortDescriptor:nil])
{
CompanyButton *button = [[CompanyButton alloc] initWithFrame:NSMakeRect(0, 0, 150, 150)];
[button setCompanyName:[c name]];
[buttons addObject:button];
}
//Determine how many columns we can fit across the window -- 100px padding on each side -- 150px width for each button
int noOfColumns = ([[self view] frame].size.width - 200) / 150;
if ([buttons count] < noOfColumns)
noOfColumns = [buttons count];
//Determine how many rows will be needed
int noOfRows = ([buttons count] + noOfColumns - 1) / noOfColumns;
//Resize and reposition the box
[whiteBox setFrameSize:NSMakeSize((noOfColumns * 150) + 60, (noOfRows * 150) + 20)];
[whiteBox setFrameOrigin:NSMakePoint(NSMidX([[self view] frame]) - ([whiteBox frame].size.width/2), NSMidY([[self view] frame]) - ([whiteBox frame].size.height/2) - 100)];
//Now iterate through each row and add items, checking if it's the last row
subviewsToAdd = [[NSMutableArray alloc] init];
for (int i=0; i<noOfRows; i++)
{
NSRect boxRect = [whiteBox frame];
NSArray *tempArray = [[NSArray alloc] init];
if (i == (noOfRows-1)) {
//Final row
tempArray = [buttons subarrayWithRange:NSMakeRange(i*noOfColumns, [buttons count])];
for (int j=0; j<[tempArray count]; j++)
{
//Iterate through the remaining buttons and add them
NSPoint buttonOrigin = NSMakePoint(5 + (j * 150), (boxRect.size.height) - (150 * (i+1)));
NSRect buttonRect = NSMakeRect(buttonOrigin.x, buttonOrigin.y, 150, 150);
[[tempArray objectAtIndex:j] setFrame:buttonRect];
NSLog(@"%@ Frame -- X:%f Y:%f -- j:%i", [[tempArray objectAtIndex:j] companyName], [[tempArray objectAtIndex:j] frame].origin.x, [[tempArray objectAtIndex:j] frame].origin.y, j);
[subviewsToAdd addObject:[tempArray objectAtIndex:j]];
}
} else {
//Not the final row
tempArray = [buttons subarrayWithRange:NSMakeRange(i*noOfColumns, noOfColumns)];
for (int j=0; j<noOfColumns; j++)
{
//Position each one on this row
NSPoint buttonOrigin = NSMakePoint(5 + (j * 150), (boxRect.size.height) - (150 * (i+1)) - 10);
NSRect buttonRect = NSMakeRect(buttonOrigin.x, buttonOrigin.y, 150, 150);
[[tempArray objectAtIndex:j] setFrame:buttonRect];
[subviewsToAdd addObject:[tempArray objectAtIndex:j]];
}
}
}
[whiteBox setSubviews:subviewsToAdd];
[whiteBox setNeedsDisplay:YES];
}
没有找到相关结果
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1 个回复
脖呐
的文档中 此方法标记受影响的视图 和窗口区域需要显示。 如果你不在再次拨打会怎么样？