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iOS tableView的分类

主要是学习分类,挺不错的样子,还没有加完,加完还需要2个类,一个数据类,一个cell子控件的大小类

大致分了一下,一个uitableview需要几个方法去实现, 创建一个tableivew,自定义一个cell,一个cell的模型,一个cell子控件的大小,复杂的话可以在加一个继承tableview的方法1般是3种或者4种,或者是5种。

#import "ViewController.h"

@interface XXTableiewCell : UITableViewCell

@end

const float XXTableiewCell_fontSize = 12;

@interface XXTableiewCell ()

@property (strong, nonatomic) UILabel * titleLabel;

@property (strong, nonatomic) UILabel * showTilleLable;

@implementation XXTableiewCell

+ (instancetype)cellWithTableView:(UITableView *)tableView{

    static NSString *cellID = @"cellId";

     XXTableiewCell * cell = [[XXTableiewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];

    return cell;

}

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{

    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];

    if(self){

        [self setViewUI];

    }

    return self;

- (void)setViewUI{

    _titleLabel = [[UILabel alloc] init];

    _titleLabel.font = [UIFont systemFontOfSize:XXTableiewCell_fontSize];

    _titleLabel.textColor = [UIColor grayColor];

    _titleLabel.textAlignment = NSTextAlignmentLeft;

    _titleLabel.backgroundColor = [UIColor clearColor];

    [self.contentView addSubview:_titleLabel];

    _showTilleLable = [[UILabel alloc] init];

    _showTilleLable.font = [UIFont systemFontOfSize:XXTableiewCell_fontSize];

    _showTilleLable.textColor = [UIColor grayColor];

    _showTilleLable.textAlignment = NSTextAlignmentLeft;

    _showTilleLable.backgroundColor = [UIColor clearColor];

    [self.contentView addSubview:_showTilleLable];

- (void)layoutSubviews{

    [super layoutSubviews];

    _titleLabel.frame = CGRectMake(10, 0, self.contentView.frame.size.width-20, 20);

    _showTilleLable.frame  = CGRectMake(_titleLabel.frame.origin.x, _titleLabel.frame.size.height + _titleLabel.frame.origin.y + 5, _titleLabel.frame.size.width, _titleLabel.frame.size.height);

@interface ViewController () <UITableViewDataSource, UITableViewDelegate>

@property (strong,nonatomic)NSMutableArray * resultArry;

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    _resultArry = [NSMutableArray arrayWithArray:[UIFont familyNames]];

    UITableView *tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];

    tableView.dataSource = self;

    tableView.delegate = self;

    [self setExtraCellLineHidden:tableView];

    [self.view addSubview:tableView];

// 隐藏多余cell

-(void)setExtraCellLineHidden: (UITableView *)tableView

{

    UIView *view = [UIView new];

    view.backgroundColor = [UIColor clearColor];

    [tableView setTableFooterView:view];

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

    return _resultArry.count;

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

  XXTableiewCell * cell = [XXTableiewCell cellWithTableView:tableView];

   cell.titleLabel.text = [NSString stringWithFormat:@"%ld",(NSInteger)indexPath.row + 1];

   cell.showTilleLable.text = [NSString stringWithFormat:@"%@",_resultArry[indexPath.row]];

#pragma mark-设置每一组的高度

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

    return 50;

#pragma mark 设置选中处理方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"%ld",indexPath.row + 1);

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

iOS