【发布时间】:2016-06-29 17:55:41
【问题描述】:
我正在使用内部包含自定义元素的 UITable 视图,但我无法将图片保留在我最初放置的位置。
我只是按照这个网站上的教程Team tree house
这就是我的设计外观以及它在模拟器中的表现方式。请注意,我没有使用 Autolayout,因为视频中的人说我们不应该。
我尝试将项目更改为使用 Autolayout 并添加约束,但这也不起作用。
我添加了一些自定义代码以确保控件保持在原位,但没有。
这就是我的代码的样子。
EntryListTableViewController.m
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
EntryCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
DiaryEntry *entry = [self.fetchResultsController objectAtIndexPath:indexPath];
[cell configureCellItemProperties];
[cell configureCellForEntry:entry];
[cell fixImage];
return cell;
}
EntryCell.m(仅相关方法)
+ (CGFloat) heightForEntry: (DiaryEntry *) entry {
const CGFloat topMargin = 35.0f;
const CGFloat bottomMargin = 95.0f;
const CGFloat minHeight = 106.0f;
//The actual size of the label devided by 2 otherwise is not going to get it right.
const CGFloat originalLabelWidth = 202.0f;
CGSize constraint = CGSizeMake(originalLabelWidth, CGFLOAT_MAX);
NSStringDrawingOptions options = (NSStringDrawingUsesFontLeading | NSStringDrawingUsesLineFragmentOrigin);
UIFont *font = [UIFont defaultFontMedium];
NSDictionary <NSString *, id> *attributes = @{NSAttachmentAttributeName: font};
CGRect boundingBox = [entry.body boundingRectWithSize:constraint options:options attributes:attributes context:nil];
return MAX(minHeight, (CGRectGetHeight(boundingBox) + topMargin + bottomMargin));
}
- (void) configureCellItemProperties {
[self.dateLabel setFont:[UIFont defaultFontBoldMedium]];
self.dateLabel.textColor = [UIColor portgoreColor];
[self.bodyLabel setFont:[UIFont defaultFontMedium]];
self.bodyLabel.textColor = [UIColor portgoreColor];
[self.bodyLabel setNumberOfLines:0];
[self sizeToFit];
[self.locationLabel setFont:[UIFont defaultFontMedium]];
self.locationLabel.textColor = [UIColor silverColor];
}
- (void) configureCellForEntry: (DiaryEntry *)entry {
self.bodyLabel.text = entry.body;
self.locationLabel.text = entry.location;
NSDateFormatter *dateFormatter = [NSDateFormatter defaultWeekMonthDayYear];
NSDate *date = [NSDate dateWithTimeIntervalSince1970:entry.date];
self.dateLabel.text = [dateFormatter stringFromDate:date];
if (entry.image) {
self.mainImageView.image = [UIImage imageWithData:entry.image];
}else {
self.imageView.image = [UIImage imageNamed:@"icn_noimage"];
}
if (entry.mood == DiaryEntryMoodGood) {
self.moodImageView.image = [UIImage imageNamed:@"icn_happy"];
} else if (entry.mood == DiaryEntryMoodAverage){
self.imageView.image = [UIImage imageNamed:@"icn_average"];
} else if (entry.mood == DiaryEntryMoodBad) {
self.imageView.image = [UIImage imageNamed:@"icn_bad"];
}
}
- (void) fixImage {
CGRect contentBounds = self.contentView.bounds;
CGRect imageFrame = self.imageView.frame;
imageFrame.origin.x = contentBounds.origin.x + 8;
imageFrame.origin.y = contentBounds.origin.y;
self.imageView.frame = imageFrame;
}
非常感谢您的帮助:)
【问题讨论】:
标签: ios objective-c iphone xcode uitableview