网络数据获取的封装

可以直接用,无需再重新写, 下面是三个封装,用一个就可以

NetworkingTool.h

#import <Foundation/Foundation.h>

@protocol NetworkingToolDelegate <NSObject>

-(void)bringResult:(id)result;

@end

typedef void(^Block)(id result);

typedef NS_ENUM(NSUInteger, MethodType) {
GETType,
POSTType,

};
@interface NetworkingTool : NSObject

//根据方法调用时传来的网址,获取数据,并且解析数据
+(void)networkingWithStrURL:(NSString *)strURL delegate:(id<NetworkingToolDelegate>)delegate;

+(void)networkingWithStrURL:(NSString *)strURL block:(Block)block;

+(vo
4000
id)networkingWithStrURL:(NSString *)strURL type:(MethodType)type bodyStr:(NSString *)bodyStr block:(Block)block ;

@end

NetworkingTool.m

#import "NetworkingTool.h"

@implementation NetworkingTool

+(void)networkingWithStrURL:(NSString *)strURL delegate:(id<NetworkingToolDelegate>)delegate{
//
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 mainQuenue=dispatch_get_main_queue();
dispatch_async(mainQuenue, ^{
id result=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
//代理人去执行协议方法
[delegate bringResult:result];
});
}];
//任务执行
[task resume];
}

+(void)networkingWithStrURL:(NSString *)strURL block:(Block)block{
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 queue=dispatch_get_main_queue();
dispatch_async(queue, ^{
id result=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
//通过block把值返回
block(result);
});
}];
[task resume];
}

+(void)networkingWithStrURL:(NSString *)strURL type:(MethodType)type bodyStr:(NSString *)bodyStr block:(Block)block{
NSURL *url=[NSURL URLWithString:strURL];
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];
if (type==POSTType) {
[request setHTTPMethod:@"POST"];
NSData *bodyData=[bodyStr dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:bodyData];
}
NSURLSession *session=[NSURLSession sharedSession];
NSURLSessionTask *task=[session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
dispatch_queue_t queue=dispatch_get_main_queue();
dispatch_async(queue, ^{
id result=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
block(result);
});

}];
[task resume];

}

用的时候直接调用就好,只需要写下面这句

-(void)createData{
//    [NetworkingTool networkingWithStrURL:@"http://project.lanou3g.com/teacher/yihuiyun/lanouproject/movielist.php" delegate:self];

//    [NetworkingTool networkingWithStrURL:@"http://project.lanou3g.com/teacher/yihuiyun/lanouproject/movielist.php" block:^(id result) {
//        NSLog(@"%@",result);
//    }];

[NetworkingTool networkingWithStrURL:@"http://project.lanou3g.com/teacher/yihuiyun/lanouproject/activitylist.php" type:GETType bodyStr:nil block:^(id result) {
self.HUD.hidden=YES;

//scrollView自适应高度
//        self.contentLabel.text=result[@"events"][0][@"content"];
//
//        self.contentLabel.numberOfLines=0;
//        [self.contentLabel sizeToFit];
//        NSLog(@"%g",self.contentLabel.frame.size.height);
//        self.scroll.contentSize=CGSizeMake(0, 300+self.contentLabel.frame.size.height);

NSLog(@"%@",result);

} ];

}

补充一个MBProgressHUD

用于产生加载视图,就是一直转的loading

只需要把文件拖进工程,引一下头文件

#import "MBProgressHUD.h"

先写一个属性

@property(nonatomic,retain)MBProgressHUD *HUD;

再创建

self.HUD=[MBProgressHUD showHUDAddedTo:self.tableView animated:YES];

最后在解析数据完成后把动画效果隐藏

self.HUD.hidden=YES;