#import "ViewController.h"#import "MyTableViewCell.h"static NSString *cellIdentifier = @"mycell";@interface ViewController () <UITableViewDelegate, UITableViewDataSource>@property (strong, nonatomic) NSArray *listArr;@property (strong, nonatomic) MyTableViewCell *cell;@end@implementation ViewController@synthesize listArr;- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    [self.tableView registerNib:[UINib nibWithNibName:@"MyTableViewCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:cellIdentifier];    self.tableView.estimatedRowHeight = 44;//很重要保障滑动流畅性    self.cell = [self.tableView dequeueReusableCellWithIdentifier:cellIdentifier];        self.listArr = @[@"Do any additional setup after loading the view, typically from a nib.",                     @"test",                     @"UITableViewCell 高度自适应一直是我们做动态Cell高度时遇到的最烦躁的问题,Cell动态高度计算可以去看看 sunny 的这篇文章介绍,今天主要和大家分享下我在使用 systemLayoutSizeFittingSize 系统自带方法计算高度的一些心得!"];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {    return 1;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return listArr.count;}- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {    MyTableViewCell *cell = self.cell;    cell.myLabel.text = listArr[indexPath.row];    cell.contentView.translatesAutoresizingMaskIntoConstraints = NO;    CGFloat fittingHeight = [cell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height;    return fittingHeight;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    self.cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];        if (self.cell == nil) {        UINib *nib = [UINib nibWithNibName:@"MyTableViewCell" bundle:nil];        [tableView registerNib:nib forCellReuseIdentifier:cellIdentifier];        self.cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];    }    self.cell.myLabel.backgroundColor = [UIColor blueColor];    self.cell.myLabel.textColor = [UIColor whiteColor];    self.cell.myLabel.text = [listArr objectAtIndex:indexPath.row];    return self.cell;}@end