我正在尝试使用一些相同的子视图填充滚动视图,但数据更改除外。如果我想以编程方式完成整个事情,我可以这样:
int width = 110;
int count = 0;
self.scrollView.contentSize=CGSizeMake(width*[items count],100);
for (NSString *id in items) {
Item *item = [items objectForKey:id];
CGRect frame = CGRectMake(count*width, 0, 100, 100);
UIView *itemSubview = [[UIView alloc] initWithFrame:frame];
CGRect dataLabelFrame = CGRectMake( 0, 52, 35, 30 );
UILabel* dataLabel = [[UILabel alloc] initWithFrame: dataLabelFrame];
dataLabel.text = @"Data specific to item"; // item.property or something
dataLabel.font:[UIFont systemFontOfSize:30];
dataLabel.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];
[itemSubview addSubview:dataLabel];
[self.scrollView addSubview:itemSubview];
[itemSubview release];
}
一切都好。现在,如果我的subView有点复杂,我该如何做同样的事情,我想用Interface Builder和xib存档来解决它?到目前为止,我有:
然后,在代码中:
int width = 110;
int count = 0;
self.scrollView.contentSize=CGSizeMake(width*[items count],100);
for (NSString *id in items) {
Item *item = [items objectForKey:id];
CGRect frame = CGRectMake(count*width, 0, 100, 100);
ItemSubview *itemSubview = [[ItemSubview alloc] initWithFrame:frame];
[itemSubview setBackgroundColor:[UIColor colorWithRed:0.0 green:0.2 blue:0.0 alpha:0.2]]; // to see where it ends up
[[NSBundle mainBundle] loadNibNamed:@"ItemSubview" owner:itemSubview options:nil];
itemSubview.dataLabel.text = @"Data specific to item"; // item.property or something
[self.scrollView addSubview:itemSubview];
[itemSubview release];
}
当我这样做时,我的itemSubview被绘制(我可以看到itemSubview的背景颜色),但不是xib存档中的dataLabel。我错过了什么/不理解?为什么这是以编程方式工作,而不是使用xib文件?
答案 0 :(得分:8)
这样做:
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"ItemSubview" owner:self options:nil];
ItemSubview *itemSubview = [topLevelObjects objectAtIndex:0];
确保在xib文件中,顶级视图是ItemSubview类,并且dataLabel正确连接到ItemSubview的插座。文件的所有者应留空。