iOS自定义cell的写法

<pre name="code" class="objc">自定义cell1.创建mycell继承于UITableviewcell2.在mycell.h中定义属性要添加的控件@property(nonatomic,retain)UIImageView *leftImageView;@property(nonatomic,retain)UILabel *upLabel;3.在mycell.m中释放-(void)dealloc{    [_downLabel release];    [_upLabel release];}4.自定义初始化- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{    self=[super initWithStyle:style reuseIdentifier:reuseIdentifier];    if (self) {        [self createView];    }    return self;}5.-(void)createView{    self.leftImageView=[[UIImageView alloc] init];    self.leftImageView.backgroundColor=[UIColor orangeColor];    [self.contentView addSubview:self.leftImageView];    [_leftImageView release];    //创建有view    self.rightImageView=[[UIImageView alloc] init];    self.rightImageView.backgroundColor=[UIColor orangeColor];    [self.contentView addSubview:self.rightImageView];    [_rightImageView release];}6.- (void)layoutSubviews{    [super layoutSubviews];    self.leftImageView.frame=CGRectMake(0, 0, WIDTH/3, HEIGHT);    self.rightImageView.frame=CGRectMake(2*WIDTH/3, 0, WIDTH/3, HEIGHT);    self.upLabel.frame=CGRectMake(WIDTH/3, 0, WIDTH/3, HEIGHT/2);    self.downLabel.frame=CGRectMake(WIDTH/3, HEIGHT/2, WIDTH/3, HEIGHT/2);}7.mainControllerView中必执行协议中用自定义的cell创建cell-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{static NSString *reuse=@"reuse";    MyCell *cell=[tableView dequeueReusableCellWithIdentifier:reuse];    if (!cell) {        cell=[[[MyCell alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier:reuse] autorelease];    }    cell.upLabel.text=self.arr[indexPath.row];    cell.leftImageView.image=[UIImage imageNamed:@"0.jpg"]; cell.rightImageView.image=[UIImage imageNamed:@"1.jpg"];        self.tabelView.rowHeight=100;        return cell;    }