iOS 更轻量级的控制器 数据请求和解析的封装

很多刚入行的朋友可能对如何写出更轻量级的控制器比较迷茫，直接上代码，封装数据请求和解析，然后以代理的形式返回，有用拿走，不喜勿喷！

控制器代码

TopRankingController.h

[code]#import <UIKit/UIKit.h>

@interface TopRankingController : UIViewController

@end

TopRankingController.m

[code]#import "TopRankingController.h"
#import "TopRankingDataGet.h"

@interface TopRankingController ()<UITableViewDelegate, UITableViewDataSource, topRankingDataGet>

@property (strong, nonatomic) IBOutlet UIScrollView *scrollView;

@property (strong, nonatomic) IBOutlet UITableView *tableView1;
@property (strong, nonatomic) IBOutlet UITableView *tableView2;
@property (strong, nonatomic) IBOutlet UITableView *tableView3;

@property (strong, nonatomic) NSMutableArray *modelArray1;
@property (strong, nonatomic) NSMutableArray *modelArray2;
@property (strong, nonatomic) NSMutableArray *modelArray3;

@property (strong, nonatomic) IBOutlet UILabel *label1;
@property (strong, nonatomic) IBOutlet UILabel *label2;
@property (strong, nonatomic) IBOutlet UILabel *label3;
@property (strong, nonatomic) IBOutlet UIView *view1;
@property (strong, nonatomic) IBOutlet UIView *view2;
#pragma mark - 一个数组 用来存放所有的排行方式
@property (strong, nonatomic) NSArray *sortedTypeArray;

@end

@implementation TopRankingController

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

#pragma mark - 设置导航栏
    [self setNav];
#pragma mark - 注册cell
    [self registerCell];
#pragma mark - RAC 监控scrollerView偏移
    [self addObserver];
#pragma mark - 请求数据
    [self getData];
}

- (void)setNav{
    self.navigationController.navigationBar.translucent = NO;
    self.navigationItem.title = @"热门排行";
}

- (void)registerCell{
    [self.tableView1 registerNib:[UINib nibWithNibName:@"BigCell" bundle:nil] forCellReuseIdentifier:@"bigCell"];
    [self.tableView2 registerNib:[UINib nibWithNibName:@"BigCell" bundle:nil] forCellReuseIdentifier:@"bigCell"];
    [self.tableView3 registerNib:[UINib nibWithNibName:@"BigCell" bundle:nil] forCellReuseIdentifier:@"bigCell"];
}

#pragma mark - 来回动
- (void)addObserver{
    [RACObserve(self.scrollView, contentOffset) subscribeNext:^(id x) {
        self.view1.x =  [UIScreen mainScreen].bounds.size.width / 12 + self.scrollView.contentOffset.x / 3;
        self.view2.x = self.view1.x;
    }];

    UITapGestureRecognizer *tap1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
    UITapGestureRecognizer *tap2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
    UITapGestureRecognizer *tap3 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
    [self.label1 addGestureRecognizer:tap1];
    [self.label2 addGestureRecognizer:tap2];
    [self.label3 addGestureRecognizer:tap3];
}

- (void)tap:(UITapGestureRecognizer *)sender{
    CGPoint point = self.scrollView.contentOffset;
    point.x = (sender.view.tag / 10000 - 1) * [UIScreen mainScreen].bounds.size.width;
    self.scrollView.contentOffset = point;
}

#pragma mark - 请求数据 解析数据
- (void)getData{
    self.sortedTypeArray = @[@"weekly", @"monthly", @"historical"];
    for (int i = 0; i < self.sortedTypeArray.count; i++) {
        TopRankingDataGet *topDataGet = [TopRankingDataGet getDataAndResolveDataWithSortedType:self.sortedTypeArray[i]];
        topDataGet.delegete = self;
    }
}

#pragma mark - 懒加载
- (NSMutableArray *)modelArray1{
    if (!_modelArray1) {
        self.modelArray1 = [NSMutableArray array];
    }
    return _modelArray1;
}

- (NSMutableArray *)modelArray2{
    if (!_modelArray2) {
        self.modelArray2 = [NSMutableArray array];
    }
    return _modelArray2;
}

- (NSMutableArray *)modelArray3{
    if (!_modelArray3) {
        self.modelArray3 = [NSMutableArray array];
    }
    return _modelArray3;
}

#pragma mark - 实现topDataGet代理方法
- (void)getArray:(NSMutableArray *)array andSortedType:(NSString *)sortedType{
    if ([sortedType isEqualToString:self.sortedTypeArray[0]]) {
        self.modelArray1 = array;
        [self.tableView1 reloadData];
    }
    if ([sortedType isEqualToString:self.sortedTypeArray[1]]) {
        self.modelArray2 = array;
        [self.tableView2 reloadData];
    }
    if ([sortedType isEqualToString:self.sortedTypeArray[2]]) {
        self.modelArray3 = array;
        [self.tableView3 reloadData];
    }
}

#pragma mark - tableView代理方法
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 220;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    if (tableView.tag == 100) {
        return self.modelArray1.count;
    }
    if (tableView.tag == 101) {
        return self.modelArray2.count;
    }
    if (tableView.tag == 102) {
        return self.modelArray3.count;
    }
    return 0;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    if (tableView.tag == 100) {
        AllModel *model = self.modelArray1[indexPath.row];
        BigCell *cell = [tableView dequeueReusableCellWithIdentifier:@"bigCell"];
        [cell setContentWithModel:model];
        return cell;
    }
    if (tableView.tag == 101) {
        AllModel *model = self.modelArray2[indexPath.row];
        BigCell *cell = [tableView dequeueReusableCellWithIdentifier:@"bigCell"];
        [cell setContentWithModel:model];
        return cell;
    }
    if (tableView.tag == 102) {
        AllModel *model = self.modelArray3[indexPath.row];
        BigCell *cell = [tableView dequeueReusableCellWithIdentifier:@"bigCell"];
        [cell setContentWithModel:model];
        return cell;
    }
    return 0;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    AllModel *model = nil;
    if (tableView.tag == 100) {
        model = self.modelArray1[indexPath.row];
    }

    if (tableView.tag == 101) {
        model = self.modelArray2[indexPath.row];
    }

    if (tableView.tag == 102) {
        model = self.modelArray3[indexPath.row];
    }

    DailyDetailController *dailyVC = [[DailyDetailController alloc] init];
    [self.navigationController pushViewController:dailyVC animated:YES];
    dailyVC.model = model;
    [self hiddenTabBar];

}

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self xianshiTabBar];
}

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

@end

封装的数据请求和解析类的代码

TopRankingDataGet.h

[code]#import <Foundation/Foundation.h>

@protocol topRankingDataGet <NSObject>

#pragma mark - 返回所需要的三个数组 对应三种排行方式
- (void)getArray:(NSMutableArray *)array andSortedType:(NSString *)sortedType;

@end

@interface TopRankingDataGet : NSObject

#pragma mark - 一个字符串 用来接受传过来的排行方式
@property (nonatomic, strong) NSString *sortedType;
#pragma mark - 代理棒
@property (nonatomic, assign) id<topRankingDataGet>delegete;
#pragma mark - 传入一个排序方式 完成请求数据 和数据解析等工作
+ (TopRankingDataGet *)getDataAndResolveDataWithSortedType:(NSString *)sortedType;

@end

TopRankingDataGet.m

[code]#import "TopRankingDataGet.h"
#define kTopUrl @"http://baobab.wandoujia.com/api/v3/ranklist?num=10&strategy=%@&udid=10a24205c9414591be7ae7a1fe28a374968712ab&vc=69&vn=1.9.1&deviceModel=YQ601&first_channel=eyepetizer_wandoujia_market&last_channel=eyepetizer_wandoujia_market"

@implementation TopRankingDataGet

- (instancetype)initWithSortedType:(NSString *)sortedType{
    self = [super init];
    if (self) {
        self.sortedType = sortedType;
    }
    return self;
}

+ (TopRankingDataGet *)getDataAndResolveDataWithSortedType:(NSString *)sortedType{
    TopRankingDataGet *topDataGet = [[TopRankingDataGet alloc] initWithSortedType:sortedType];
    [topDataGet getDataAndSolveData];
    return topDataGet;
}

#pragma mark - 请求数据 解析数据
- (void)getDataAndSolveData{
    NSString *urlString = [[NSString stringWithFormat:kTopUrl, self.sortedType] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSURL *url = [NSURL URLWithString:urlString];
    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        [self jiexi:data];
    }];
}

- (void)jiexi:(NSData *)data{
    if (data) {
        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
        NSArray *array = dic[@"itemList"];
        NSMutableArray *modelArray = [NSMutableArray array];
        for (NSDictionary *dic in array) {
            AllModel *model = [[AllModel alloc] initWithDictionary:dic[@"data"]];
            [modelArray addObject:model];
        }
        if (_delegete && [_delegete respondsToSelector:@selector(getArray:andSortedType:)]) {
            [_delegete getArray:modelArray andSortedType:self.sortedType];
        }
    }
}

@end

由于要实现三个TableView的滚动 而笔者又是用xib加载的控件 故而引入了ReactiveCocoa框架 当然这个框架的作用远远不止于此 笔者以后会持续更新关于ReactiveCocoa框架的使用 关于 xib 上 加载scrollerView可能会出现的问题 很多博客都有讲解 在这里就不作解释了

第一次写博客 想想 还有点小激动