1.现在xib中设置好布局
- 将需要的拉伸的控件拖到.m文件中，设置preferredMaxLayoutWidth属性
<pre> #import "TMContentCell.h"
@interface TMContentCell()
@property (weak, nonatomic) IBOutlet UILabel *label;
@end
@implementation TMContentCell
-(instancetype)init {
if (self = [super init]) {
self = [[NSBundle mainBundle] loadNibNamed:@"TMContentCell" owner:nil options:nil].firstObject;
}
return self;
}
-(void)awakeFromNib {
// Initialization code
self.label.preferredMaxLayoutWidth = [UIScreen mainScreen].bounds.size.width - 16;
// [self.label setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
}
-(void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
}
@end
</code>
之后再heightForRowAtIndexPath 中设置指定cell的systemLayoutSizeFittingSize属性
<pre>
-(void)createUI {
UITableView *tableView = [[UITableView alloc] initWithFrame:self.view.frame];
tableView.delegate = self;
tableView.dataSource = self;
[self.view addSubview:tableView];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 1;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CGFloat height = [[[TMContentCell alloc] init].contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height + 0.5;
return height;
}
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [[TMContentCell alloc] init];
return cell;
}
</pre>
