xib,AFN的网络请求,判断网络状态

使用方法和storyboard基本相同,但是只能创建view,tableViewcell可以直接铺,省去计算坐标的过程,比较省事

创建xib文件的方式
1.在创建文件的时候,选择also create xib file,就会自动创建一个xib文件,文件和xib和关联好了,直接就可以用
2.需要在empty里创建一个xib文件,然后指定files owner,像文件里拖拽一个view,指定owner的self.view是哪一个view

注: 下面代码都是以前见过的可以不看,只有RootViewController.m里加了网络请求和判断网络状态是新的知识点

AppDelegate.m
创建tabbar

//boudel如果写成nil,就是默认路径,默认路径是[NSBundle mainBundle]RootViewController *rootVC=[[RootViewController alloc] initWithNibName:NSStringFromClass([RootViewController class]) bundle:nil];    UINavigationController *naVC=[[UINavigationController alloc] initWithRootViewController:rootVC];    naVC.tabBarItem=[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:1000];    MovieViewController *movieVC=[[MovieViewController alloc] initWithNibName:NSStringFromClass([MovieViewController class]) bundle:nil];    UINavigationController *movieNAVC=[[UINavigationController alloc] initWithRootViewController:movieVC];    movieVC.tabBarItem=[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemMore tag:1001];    UITabBarController *tab=[[UITabBarController alloc] init];    tab.viewControllers=@[naVC,movieNAVC];    self.window.rootViewController=tab;

RootViewController.m

#import "RootViewController.h"#import "SecViewController.h"#import "AFNetworking.h"@interface RootViewController ()<SecViewControllerDeleage>@property (weak, nonatomic) IBOutlet UITextField *nameTextField;- (IBAction)buttonAction:(id)sender;@end@implementation RootViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.    self.title=@"第一页";    NSArray *arr=[[NSBundle mainBundle] loadNibNamed:@"MyView" owner:nil options:nil];    NSLog(@"%@",arr);    UILabel *label=arr[0];    label.center=CGPointMake(200, 400);    [self.view addSubview:label];    //****************请求**************//    AFHTTPSessionManager *manager=[AFHTTPSessionManager manager];//    [manager GET:@"http://project.lanou3g.com/teacher/yihuiyun/lanouproject/movielist.php" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {//        NSLog(@"%@",responseObject);//    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {//        NSLog(@"error=%@",error);//    }];    //************判断网络状况**************//    [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {//        NSLog(@"%ld",status);//        //    }];//    [[AFNetworkReachabilityManager sharedManager] startMonitoring];- (IBAction)buttonAction:(id)sender {    self.view.backgroundColor=[UIColor colorWithRed:arc4random()%256/255.0 green:arc4random()%256/255.0 blue:arc4random()%256/255.0 alpha:1];    SecViewController *secVC=[[SecViewController alloc] initWithNibName:NSStringFromClass([SecViewController class]) bundle:nil];    [self.navigationController pushViewController:secVC animated:YES];    secVC.str=self.nameTextField.text;    secVC.deleage=self;}-(void)bringStr:(NSString *)str{    NSLog(@"%@",str);}@end

SecViewController.h

#import <UIKit/UIKit.h>@protocol SecViewControllerDeleage <NSObject>-(void)bringStr:(NSString *)str;@end@interface SecViewController : UIViewController@property(nonatomic,copy)NSString *str;@property(nonatomic,assign)id<SecViewControllerDeleage>deleage;@end

SecViewController.m

#import "SecViewController.h"@interface SecViewController ()- (IBAction)backAction:(id)sender;@end@implementation SecViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.    NSLog(@"%@",self.str);}- (IBAction)backAction:(id)sender {    [self.navigationController popToRootViewControllerAnimated:YES];    [self.deleage bringStr:@"1111111"];}@end

MovieViewController.m

#import "MovieViewController.h"#import "MovieCell.h"#import "UIImageView+WebCache.h"@interface MovieViewController ()<UITableViewDataSource,UITableViewDelegate>@property (weak, nonatomic) IBOutlet UITableView *myTableView;@property(nonatomic,retain)NSMutableArray *arr;@end@implementation MovieViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.//    [self.myTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"reuse"];    UINib *nib=[UINib nibWithNibName:NSStringFromClass([MovieCell class]) bundle:nil];    //在文件里找到当前需要注册的cell    [self.myTableView registerNib:nib forCellReuseIdentifier:@"MovieCell"];    [self createData];}-(void)createData{    NSString *strUrl=[NSString stringWithFormat:@"http://project.lanou3g.com/teacher/yihuiyun/lanouproject/movielist.php"];    NSURL *url=[NSURL URLWithString:strUrl];    NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];    NSURLSession *session=[NSURLSession sharedSession];    NSURLSessionTask *task=[session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {        dispatch_queue_t mainQueue = dispatch_get_main_queue();        dispatch_async(mainQueue, ^{             NSDictionary *dic=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];            self.arr=dic[@"result"];            [self.myTableView reloadData];        });    }];    [task resume];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return self.arr.count;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    MovieCell *cell=[tableView dequeueReusableCellWithIdentifier:@"MovieCell"forIndexPath:indexPath];    cell.myLabel.text=self.arr[indexPath.row][@"movieName"];   [ cell.myImageView sd_setImageWithURL:self.arr[indexPath.row][@"pic_url"] ];    return cell;}-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    NSLog(@"1121");}

MovieCell.h

@property (weak, nonatomic) IBOutlet UILabel *myLabel;@property (weak, nonatomic) IBOutlet UIImageView *myImageView;