网络请求是编程的重要一步份
///
-
(void)getDataWith: (NSString *)URLString{
NSURL * url = [NSURL URLWithString:URLString];
//网络请求对象
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url];
NSURLSession * session = [NSURLSession sharedSession];
//请求任务
NSURLSessionDataTask * dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
//主线程
dispatch_async(dispatch_get_main_queue(), ^{
//解析json数据
if (!error) {
id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSLog(@"result = %@",result);
for (NSDictionary * songDic in result) {
Song * song = [[Song alloc]init];
[song setValuesForKeysWithDictionary:songDic];
[self.songArr addObject:song];
}
//刷新tableview的数据
[self.tableView reloadData];
} else {
NSLog(@"error : %@",error);
}
});
}];
//手动开启任务
[dataTask resume]
}
///
