#import "ViewController.h"
#import "MJRefresh/MJRefresh.h"
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>{
//n表格数组
NSMutableArray * tableArray;
//页码
int _curPage;
//时间
NSString * curTime;
//下拉刷新
MJRefreshHeaderView * mjHeadVC;
//上啦刷新
MJRefreshFooterView * mjFooterVC;
}
@property (nonatomic ,strong)UITableView *tbv;
@end
@implementation ViewController
-(UITableView *)tbv{
if (!_tbv) {
_tbv = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStylePlain];
_tbv.delegate = self;
_tbv.dataSource = self;
}
return _tbv;
}
#pragma mark -------- UITableDelegate------
#pragma mark -------- UITableDasource-------
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return tableArray.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"2"];
if (!cell) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"2"];
}
//得到每一个cenll对应的字典
NSDictionary * cellDIC =tableArray[indexPath.row];
cell.textLabel.text=cellDIC[@"content"];
cell.textLabel.numberOfLines = 0;
return cell;
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
//请求数据
[self requestDataPost:_curPage time:curTime];
}
#pragma mark ------------请求网络数据---------
//get方式请求数据
-(void)requestDataGet:(int)page time:(NSString*)time{
}
//post方法
-(void)requestDataPost:(int)page time:(NSString*)time{
//显示状态栏中的z等待想时期
[UIApplication sharedApplication].networkActivityIndicatorVisible=YES;
NSURL * url = [NSURL URLWithString:@"http://v.juhe.cn/joke/content/list.php"];
NSMutableURLRequest * req = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:5.0];
[req setHTTPMethod:@"POST"];
NSString * pargerStr = [NSString stringWithFormat:@"key=%@&page=%d&pagesize=10&sort=desc&time=%@",@"eaaf69cdca2f46e403a264f5ef7cb74b",_curPage,curTime];
[req setHTTPBody:[pargerStr dataUsingEncoding:NSUTF8StringEncoding]];
[[[NSURLSession sharedSession]dataTaskWithRequest:req completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
//回到主线程
dispatch_async(dispatch_get_main_queue(), ^{
//停止状态栏中的等待指示控件
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
//y停止下拉刷新控件
[self->mjHeadVC endRefreshing];
//停止上啦刷新控件
[self->mjFooterVC endRefreshing];
});
if (error !=nil) {
NSLog(@"服务器错误");
return ;
}
NSError * jsonerror = nil;
id jsData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&jsonerror];
if (jsonerror !=nil) {
NSLog(@"网络错误");
return;
}
if ([jsData[@"error_code"]integerValue] !=0) {
NSLog(@"%@",jsData[@"reason"]);
return;
}
NSArray * dataARR = [jsData[@"result"]objectForKey:@"data"];
if (self->_curPage==1) {
self->tableArray = [dataARR mutableCopy];
}else{
[self->tableArray addObjectsFromArray:dataARR];
}
dispatch_async(dispatch_get_main_queue(), ^{
[self.tbv reloadData];
});
}]resume];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self.view addSubview:self.tbv];
//给当前页码默认值
_curPage = 1;
//给时间字符串赋值
NSDate * now = [NSDate date];
NSTimeInterval interval =[now timeIntervalSince1970];
curTime = [NSString stringWithFormat:@"%d",(int)interval];
//将下拉刷新实现
mjHeadVC = [[MJRefreshHeaderView alloc]initWithScrollView:self.tbv];
//使用week解决循环强引用
__weak typeof (self) weakSelf = self;
//定义下拉回调的代码块
mjHeadVC.beginRefreshingBlock = ^(MJRefreshBaseView *refreshView) {
//用一个强引用对weak修饰 防止内存释放
__strong typeof (self) strongSelf = weakSelf;
//重新初始化页码和当前时间
self->_curPage=1;
NSTimeInterval interval =[now timeIntervalSince1970];
self->curTime = [NSString stringWithFormat:@"%d",(int)interval];
//重新获取网络数据
[strongSelf requestDataPost:strongSelf->_curPage time:strongSelf->curTime];
};
//上啦刷新l控件
mjFooterVC = [[MJRefreshFooterView alloc]initWithScrollView:self.tbv];
//设置回调代码块
mjFooterVC.beginRefreshingBlock = ^(MJRefreshBaseView *refreshView) {
//用一个强引用对weak修饰 防止内存释放
__strong typeof (self) strongSelf = weakSelf;
//改变页码
self->_curPage+=1;
//重新获取网络数据
[strongSelf requestDataPost:strongSelf->_curPage time:strongSelf->curTime];
};
}
@end
