UITableView的简单使用

UITableView的简单使用

#import "ViewController.h"

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>
@property (weak, nonatomic) IBOutlet UITableView *tableView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

//建立数组并放入元素，作为第一层的数据
-(NSArray *)firstSection{
    return @[@"第一行",@"第二行",@"第三行"];
}

//tableview中section个数
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 3;
}

//没个section有几行
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    switch (section) {
        case 0:
            return 3;
        case 1:
            return 1;
        case 2:
            return 2;
        default:
            return 0;
    }
}

//每个section的头部高度
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
    if (section == 0) {
        return 15;
    }
    return 18;
}

//每个section的底部高度
-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
    if (section == 2) {
        return 100;
    }
    return CGFLOAT_MIN;
}

//每行的高度
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    if (indexPath.section == 0) {
        return 52;
    }else{
        return 48;
    }
}

//放入数据
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    static NSString *reuseIdetify = @"SvTableViewCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseIdetify];
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdetify];
    switch (indexPath.section) {
        case 0:{
            cell.textLabel.text = [self firstSection][indexPath.row];
            cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
            break;
        }
        case 1:{
            cell.textLabel.text = @"第四行";
            break;
        }
        case 2:{
            if (indexPath.row == 0) {
                cell.textLabel.text = @"第五行";
            }else{
                cell.textLabel.text = @"第六行";
            }
            break;
        }
        default:
            break;
    }
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    return cell;
}


//底部建立一个自定义的View
-(UIView*)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
    if (section == 2) {
        UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(20, 34, CGRectGetWidth([UIScreen mainScreen].bounds)-50, 50)];
        button.backgroundColor = [UIColor greenColor];
        [button setTitle:@"点击" forState:UIControlStateNormal];
        [button.titleLabel setFont:[UIFont systemFontOfSize:18]];
        [button.layer setCornerRadius:5];
        [button addTarget:self action:@selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
        UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), 100)];
        [view addSubview:button];
        return view;
    }
    return nil;
}

//每行的点击事件 提示点击的行数
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSString *buttonRow = [[NSString alloc]initWithFormat:@"你选中的是%li行",indexPath.row];
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:buttonRow delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
    [alert show];
}

//按钮的点击
-(void)didTapButton:(id)sender{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"你已选中" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
    [alert show];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

主要的就是UITableView的几种方法，尤其是footerView的使用