首先说明,代码来自老司机,_
使用cocoa pods集成,2.5版本以上是swift语言,
pod 'ReactiveCocoa', '~> 2.5' #
对MVVM的介绍学习http://www.jianshu.com/p/87ef6720a096 讲的比较详细
话不多说 直接上代码
1.viewController中 代码就剩这么点
#import "MsgModelController.h"
#import "MsgTableView.h"
#import "MsgViewModel.h"
@interface MsgModelController ()
@property(nonatomic,strong)MsgTableView *msgView;
@property(nonatomic,strong)MsgViewModel *viewModel;
@end
@implementation MsgModelController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.navigationItem.titleView = [[navLabel alloc] initWithFrame:lableFrame titile:@"选择模板"];
self.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithImage:@"btn_back.png" target:self action:@selector(popLeftBtnClick)];//以上初始化导航栏
[self bindViewModel];
}
-(void)bindViewModel{
self.msgView = [[MsgTableView alloc] initWithFrame:self.view.frame];
[self.view addSubview:self.msgView];
// 绑定数据
RAC(self.msgView,dataList) = RACObserve(self.viewModel, dataList);
//执行命令
[self.viewModel.loadCommand execute:self.msgView];//把TableView传入viewModel
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.tabBarController.tabBar.hidden = YES;
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
self.tabBarController.tabBar.hidden = NO;
}
-(void)popLeftBtnClick{
[self.navigationController popViewControllerAnimated:YES];
}
-(MsgViewModel*)viewModel{
if (!_viewModel) {
_viewModel = [[MsgViewModel alloc] init];
_viewModel.nav = self.navigationController;
}
return _viewModel;
}
@end
2.viewModel
.h
@interface MsgViewModel : NSObject
//加载数据
@property(nonatomic,strong)RACCommand *loadCommand;
@property(nonatomic,strong)NSMutableArray *dataList;
//底部按钮
@property(nonatomic,strong)RACCommand *btnCommoand;
@property(nonatomic,strong)UINavigationController *nav;
@end
.m
#import "MsgViewModel.h"
#import "MsgTableView.h"
#import "NewModelViewController.h"
@implementation MsgViewModel
-(instancetype)init{
self = [super init];
if (self) {
[self initViewModel];
}
return self;
}
-(void)initViewModel{
//加载数据
self.loadCommand = [[RACCommand alloc] initWithSignalBlock:^RACSignal *(id input) {
NSData *data=[[NSUserDefaults standardUserDefaults]objectForKey:UserKey];
UserInfoSaveModel * userInfoModel=[NSKeyedUnarchiver unarchiveObjectWithData:data];
NSArray *dataArray = [[NSArray alloc] initWithObjects:[NSString stringWithFormat:@"%d",0],[NSString stringWithFormat:@"%d",10],nil];
NSString *hmacString = [[communcat sharedInstance] ArrayCompareAndHMac:dataArray];
In_informModel *inModel= [[In_informModel alloc] init];
inModel.key = userInfoModel.key;
inModel.digest = hmacString;
inModel.offset = [NSString stringWithFormat:@"%d",0];
inModel.page_size = [NSString stringWithFormat:@"%d",10];
NSMutableDictionary *indic = [[NSMutableDictionary alloc]init];
[indic setObject:inModel.key forKey:@"key"];
[indic setObject:inModel.digest forKey:@"digest"];
[indic setObject:inModel.offset forKey:@"offset"];
[indic setObject:inModel.page_size forKey:@"page_size"];
NSString *url=[NSString stringWithFormat:@"%@/crowd-sourcing-consumer/api/v2/requirement/get/message/list",kUrlTest];
RACSignal *signal = [BBJDRequestManger postWithURL:url withParamater:indic];//加载网络请求的数据 对AFNetworking的封装
[signal subscribeNext:^(id x) {
MsgTableView *msgView = input;//接收传入的tableview
NSArray *result = x[@"data"][@"messages"];
for (NSDictionary *dict in result) {
Out_informBody * informBody = [[Out_informBody alloc]initWithDictionary:dict error:nil];
[self.dataList addObject:informBody.msg ];
}
[msgView.tableView reloadData];
}];
return signal;
}];
self.btnCommoand = [[RACCommand alloc] initWithSignalBlock:^RACSignal *(id input) {
UIViewController *vc = (UIViewController*)input;
NewModelViewController *newVC = [[NewModelViewController alloc] init];
CATransition *transition = [CATransition animation];
transition.duration = 0.5f;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
transition.type = kCATransitionReveal;
[vc.navigationController.view.layer addAnimation:transition forKey:nil];
[vc.navigationController pushViewController:newVC animated:YES];
return [RACSignal empty];
}];
}
-(NSMutableArray*)dataList{
if (!_dataList) {
_dataList = [NSMutableArray array];
}
return _dataList;
}
@end
3.对view
view1
.h
@interface MsgModelViewCell : UITableViewCell
@property(nonatomic,assign)CGFloat cellHeight;
-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier;
-(void)cellAutoLayoutHeight:(NSString *)text;
@end
.m
@interface MsgModelViewCell()
@property(nonatomic,strong)UILabel *label;
@end
@implementation MsgModelViewCell
-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
_label = [[UILabel alloc] init];
_label.font = MiddleFont;
_label.numberOfLines = 0;
_label.textColor = [UIColor blackColor];
[self.contentView addSubview:_label];
}
self.selectionStyle = UITableViewCellSelectionStyleNone;
return self;
}
-(void)cellAutoLayoutHeight:(NSString *)text{
self.label.text = text;
CGSize maxSize = CGSizeMake(SCREEN_WIDTH-40, MAXFLOAT);
// 2.计算文字的高度
CGFloat textH = [text boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:14]} context:nil].size.height;
self.label.frame = CGRectMake(20, 15, SCREEN_WIDTH-40, textH);
[self.label sizeToFit];
_cellHeight = self.label.height +30;
}
- (void)awakeFromNib {
[super awakeFromNib];
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
}
@end
view2
.h
@interface MsgTableView : UIView
@property(nonatomic,strong)MsgViewModel *model;
@property(nonatomic,strong)UITableView *tableView;
@property(nonatomic,strong)NSMutableArray *dataList;
@property(nonatomic,strong)UILabel *showLabel;
@property(nonatomic,strong)UIButton *bottomBtn;
@end
.m
static NSString *CELLID = @"reuseIdentifier";
@interface MsgTableView()
@end
@implementation MsgTableView
-(instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
[self initSubViews];
}
return self;
}
-(void)initSubViews{
[self addSubview:self.tableView];
[self addSubview:self.bottomBtn];
}
#pragma mark---------tableViewDelegate----------
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return self.dataList.count;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return 1;
}
-(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
if (section == 0) {
return self.showLabel;
}else{
return nil;
}
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
if (section == 0) {
return 30;
}else{
return 10;
}
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
MsgModelViewCell *cell = [[MsgModelViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CELLID];
[cell cellAutoLayoutHeight:self.dataList[indexPath.section]];
return cell.cellHeight;
}
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
MsgModelViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CELLID];
if (!cell) {
cell = [[MsgModelViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CELLID];
}
[cell cellAutoLayoutHeight:self.dataList[indexPath.section]];
return cell;
}
#pragma mark -----懒加载-----
- (UITableView *)tableView
{
return HT_LAZY(_tableView, ({
UITableView *tableView = [[UITableView alloc] initWithFrame:CGRectMake(0,0, SCREEN_WIDTH, SCREEN_HEIGHT-44-20) style:UITableViewStylePlain];
tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
tableView.delegate = self;
tableView.dataSource = self;
tableView.backgroundColor = [UIColor colorWithRed:0.9608 green:0.9608 blue:0.9608 alpha:1.0];
tableView;
}));
}
-(UILabel*)showLabel{
return HT_LAZY(_showLabel, ({
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 30)];
label.text = @"说明：已通过审核的模板可能会根据当前政策变化被禁用";
label.textColor = [UIColor redColor];
label.font = [UIFont systemFontOfSize:12];
label.textAlignment = 1;
label.backgroundColor = [UIColor colorWithRed:0.9608 green:0.9608 blue:0.9608 alpha:1.0];
label;
}));
}
-(UIButton*)bottomBtn{
return HT_LAZY(_bottomBtn, ({
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0,SCREEN_HEIGHT-44-64, SCREEN_WIDTH,44)];
[btn setTitle:@"新增模板" forState:UIControlStateNormal];
btn.titleLabel.font = [UIFont systemFontOfSize:18];
btn.backgroundColor = MAINCOLOR;
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[[btn rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
[self.model.btnCommoand execute:[self currentViewController]];///按钮绑定方法 并将当前控制器传入到viewModel方法中
}];
btn;
}));
}
//获取当前控制器
-(UIViewController *)currentViewController{
UIViewController *vc;
for (UIView* next = [self superview]; next; next = next.superview) {
UIResponder* nextResponder = [next nextResponder];
if ([nextResponder isKindOfClass:[objc_getClass("UIViewController") class]] ) {
vc = (UIViewController*)nextResponder;
return vc;
}
}
return vc;
}
-(NSMutableArray*)dataList{
return HT_LAZY(_dataList, ({
NSMutableArray *array = [NSMutableArray array];
array;
}));
}
-(MsgViewModel*)model{
if (!_model) {
_model = [[MsgViewModel alloc] init];
}
return _model;
}
@end
用到的宏定义
#define HT_LAZY(object, assignment) (object = object ?: assignment)
//屏幕宽度和高度
#define SCREEN_WIDTH [[UIScreen mainScreen] bounds].size.width
#define SCREEN_HEIGHT [[UIScreen mainScreen] bounds].size.height