我使用下面的代碼通過PHP文件從Url檢索數據,tableview控制器將啓動活動指標。我試圖做的是停止指標只要沒有數據已經加載到tableview。停止活動指標,而Xcode中沒有行
她是代碼;
NSString *urlString = [NSString stringWithFormat:@"http:/MyWebSite/ChoseMyLike.php?userName=%@", myString];
NSURL *url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSURLSessionTask *task = [[NSURLSession sharedSession] dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (!data) {
NSLog(@"connection error: %@", error);
return;
}
NSError *parseError;
NSArray *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&parseError];
if (!json) {
NSLog(@"JSON Parsing error: %@", parseError);
NSLog(@"data = %@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);
return;
}
NSMutableArray *results = [[NSMutableArray alloc]init];
for (int i = 0; i < json.count; i++) {
NSString *cQasidaName = json[i][@"qasidaName"];
NSString *cQasidaShaerName = json[i][@"qasidaShaerName"];
NSString *cQasidaBody = json[i][@"qasidaBody"];
NSString *cQasidaDate = json[i][@"myDate"];
NSString *cQasidaTime = json[i][@"myTime"];
NSString *cQasidaRate = json[i][@"myRate"];
NSString *cQasidaId = json[i][@"qasidaId"];
NSString *cQasidaUserName = json[i][@"userName"];
NSString *cTheUserId = json[i][@"theUserId"];
NSString *cTheUserNameArabic = json[i][@"userNameArabic"];
[results addObject:[[ListOfObjects alloc] initWithQasidaName: (NSString *) cQasidaName andQasidaShaerName: (NSString *) cQasidaShaerName andQasidaBody: (NSString *) cQasidaBody andQasidaDate: (NSString *) cQasidaDate andQasidaTime: (NSString *) cQasidaTime andQasidaRate: (NSString *)cQasidaRate andQasidaId:cQasidaId andQasidaUserName:cQasidaUserName andTheUserId:cTheUserId andTheUserNameArabic:cTheUserNameArabic]];
}
dispatch_async(dispatch_get_main_queue(), ^{
self.listArray = results;
[self.tableView reloadData];
[spinner stopAnimating];
});
}];
[task resume];
}
目前指標沒有停止。我需要做什麼? 感謝
」只要沒有數據加載到tableview。「這並不清楚。 spinner初始化的地方在哪裏?它可能是'無'? – trojanfoe
對不起,我的意思是如果沒有數據,Url請求不會返回任何內容。在那個階段,我想停止指標 –
換句話說,表格是空的 –