NSError *error;
//加载一个NSURL对象
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:URL]];
//将请求的URL数据放到NSData对象中
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
if (response != nil) {
NSMutableDictionary *dict = nil;
dict = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
for (NSString *item in dict[@"s_province"]) {
[self.provinceArray addObject:item];
}
[self.myPicker reloadAllComponents];
}