iOS中大流中的自定义cell 技术分享

AppDelegate.m指定根视图

 self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[RootTableViewController alloc] initWithStyle:UITableViewStylePlain]];

//根视图

RootTableViewController.m

#import "RootTableViewController.h"
#import "TestCell.h"
#import "TestModel.h"

@interface RootTableViewController ()

@property (nonatomic, strong) NSMutableArray *datasourceArray;

@end

@implementation RootTableViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.datasourceArray = [NSMutableArray array];

    [self.tableView registerClass:[TestCell class] forCellReuseIdentifier:@"cell"];

    for (int i = 0; i < 50; i++) {
        TestModel *model = [TestModel new];
        model.isShow = NO;
        [self.datasourceArray addObject:model];
    }

}

#pragma mark - Table view data source

数据源方法

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return self.datasourceArray.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    TestCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];

    TestModel *model = self.datasourceArray[indexPath.row];

    if (model.isShow) {

        cell.label.text = @"展示view";
        [cell addView];
    } else {
        cell.label.text = @"什么都没有";
        [cell removeView];
    }

    return cell;
}

返回高

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    TestModel *model = self.datasourceArray[indexPath.row];
    if (model.isShow) {
        return 300;
    } else {
        return 100;
    }
}

点击cell触发的方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    TestModel *model = self.datasourceArray[indexPath.row];
    model.isShow = !model.isShow;
    [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

    [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}

准备一个自定义cell

#import <UIKit/UIKit.h>

@interface TestCell : UITableViewCell

@property (nonatomic, strong) UILabel *label;
@property (nonatomic, strong) UIView *redView;

- (void)addView;
- (void)removeView;

@end

#import "TestCell.h"

@implementation TestCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        [self addAllViews];
    }
    return self;
}

- (void)addAllViews
{
    self.label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 100)];
    self.label.backgroundColor = [UIColor yellowColor];
    [self addSubview:self.label];

    self.redView = [[UIView alloc] initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, 200)];
    self.redView.backgroundColor = [UIColor redColor];

}

- (void)addView
{
    [self addSubview:self.redView];
}

- (void)removeView
{
    [self.redView removeFromSuperview];
}

准备一个model类

#import <Foundation/Foundation.h>

@interface TestModel : NSObject

@property (nonatomic, assign) BOOL isShow;

@end

最终效果如下:

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