在iOS中单击按钮时如何在UITableView中获取特定的JSON数据（目标c）？
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【中文标题】在iOS中单击按钮时如何在UITableView中获取特定的JSON数据（目标c）？【英文标题】：How to get specific JSON data in UITableView when Button is clicked in iOS(objective c)? 【发布时间】：2017-04-11 13:15:50 【问题描述】：我的 JSON 数据如下所示：
"success": true,
"data": [
"playerId": "j_mohammed",
"playerName": "Jason Mohammed",
"playerShortName": "Jason Mohammed",
"PlayingRole": 3,
"Credit": 85,
"Player_Points": 45,
"TeamName": "wi",
"TeamColor": "1"
,
"playerId": "s_gabriel",
"playerName": "Shannon Gabriel",
"playerShortName": "ST Gabriel",
"PlayingRole": 4,
"Credit": 80,
"Player_Points": 0,
"TeamName": "wi",
"TeamColor": "1"
,
"playerId": "s_hope",
"playerName": "Shai Hope",
"playerShortName": "S Hope",
"PlayingRole": 1,
"Credit": 85,
"Player_Points": 0,
"TeamName": "wi",
"TeamColor": "1"
,
"playerId": "e_lewis",
"playerName": "Evin Lewis",
"playerShortName": "Evin Lewis",
"PlayingRole": 3,
"Credit": 85,
"Player_Points": 281,
"TeamName": "wi",
"TeamColor": "1"
,
"playerId": "m_hafeez",
"playerName": "Mohammad Hafeez",
"playerShortName": "Mohammad Hafeez",
"PlayingRole": 2,
"Credit": 90,
"Player_Points": 0,
"TeamName": "pak",
"TeamColor": "4"
,
"playerId": "f_ashraf",
"playerName": "Fahim Ashraf",
"playerShortName": "Fahim Ashraf",
"PlayingRole": 3,
"Credit": 85,
"Player_Points": 0,
"TeamName": "pak",
"TeamColor": "4"
]
我已经将此 JSON 解析到我的应用程序中。 我的应用程序的视图如下所示：
因为它显示我在视图顶部有 4 个按钮：
我在 ViewController 中使用了 TableView 来解析数据：
这就是我所做的。现在我的主要问题是，当我单击按钮“WK”时，我只想在 tableview 中显示来自 JSON 的检票员列表，当我单击“BAT”时，击球手的列表等等。我现在已经完成了解析，它显示了所有来自 JSON 的数据，不知道如何在单击按钮时在 TableView 中显示选定的数据。
无论球员是投球手、击球手还是三柱门守门员，它都以 JSON 格式存储为 "PlayingRole"。
所以，如果玩家是Wicket keeper its role is:1
All rounder:2
Batsman:3
Bowler:4
这是我完成的代码：
NSString *mainurl = [NSString stringWithFormat:@"http://192.168.1.102/redbull11/webservices/api/getMatcheSquad/“];
NSString *playerurl = [NSString stringWithFormat:@"%@%@",mainurl,match_id2];
NSURL *url=[NSURL URLWithString:playerurl];
NSLog(@"mainurl: %@",url);
NSURLSessionConfiguration *csc=[NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *csession = [NSURLSession sessionWithConfiguration:csc delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
NSURLSessionDataTask *ctask=[csession dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_LOW, 0), ^
getsuccess = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
dispatch_async(dispatch_get_main_queue(), ^
NSString *success =[getsuccess valueForKey:@"success"];
if([success boolValue] == YES)
NSArray *arr =[getsuccess valueForKey:@"data"];
for ( NSDictionary *dic2 in arr)
NSMutableArray *temp =[[NSMutableArray alloc]init];
[temp addObject:[dic2 valueForKey:@"playerShortName"]];
[temp addObject:[dic2 valueForKey:@"Credit"]];
[temp addObject:[dic2 valueForKey:@"Player_Points"]];
[temp addObject:[dic2 valueForKey:@"TeamName"]];
[temp addObject:[dic2 valueForKey:@"PlayingRole"]];
[getLoc addObject:temp];
NSLog(@"%@",getLoc);
[_playerselect reloadData];
[MBProgressHUD hideHUDForView:self.view animated:YES];
);
);
];
[ctask resume];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
selectTeamCell *cell = [tableView dequeueReusableCellWithIdentifier:@"names" forIndexPath:indexPath];
NSMutableArray *arr =[[NSMutableArray alloc]init];
arr = [getLoc objectAtIndex:indexPath.row];
NSLog(@"%ld",(long)indexPath.row);
cell.playerName.text = [arr objectAtIndex:0];
cell.playerCredit.text = [[arr objectAtIndex:1]stringValue];
cell.playerPoints.text = [[arr objectAtIndex:2]stringValue];
cell.teamName.text = [arr objectAtIndex:3];
return cell;
请帮忙。提前谢谢你。
【问题讨论】：
还有...你的代码是什么？ @Maulik Desai Parse json 根据您的要求创建两个数组，一个用于击球手，一个用于守门员附加适当的数据。并相应地获取它们。 @AlejandroIván 看到我已经编辑了问题。 检票员钥匙在哪里？ @DishantRajput in JSON "PlayingRole": 1 表示 wicketkeeper。 【参考方案1】：如果您只想显示检票员。这只是为了在表格视图单元格中显示检票员
1.) 将您的响应存储在一个数组中。
NSArray *yourArray =[getsuccess valueForKey:@"data"];//please declare your array globally
那么
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
return yourArray.count;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
selectTeamCell *cell = [tableView dequeueReusableCellWithIdentifier:@"names" forIndexPath:indexPath];
NSDictionary *dictYourDict;
dictYourDict=[yourArray objectAtIndex:indexPath.row];
cell.yourLabel.text=[dictYourDict objectForkEy : @"PlayingRole"];
return cell;
【讨论】：
感谢您的努力。正如你所说，它正在显示检票员。但是当我点击不同的按钮时，我想在守门员、击球手、投球手和全能手之间进行切换。 然后您可以做的是拥有另一个属性，该属性指示您要显示哪种类型的数据@property (strong, nonatomic) NSString *typeOfData; 并使用tableView:cellForRowAtIndexPath: 中的一个或另一个信息。最简单的方法是为每种类型的选择实际使用不同的数组。您的按钮的IBAction 应该定义该属性并调用[tableView reloadData];
是的，我知道伙计。我只是告诉你的方法。您必须在每次点击中设置一个变量并在 ibaction 中调用它。并重新加载您的表格视图。
@AlejandroIván 和thanx 的帮助我已经按照你们的建议做了同样的事情。我已经通过混合你的建议和我的编码解决了这个问题！【参考方案2】：
使用此谓词过滤数据
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"PlayingRole == 1"];
NSArray *arrWicketKeeper = [arrMain filteredArrayUsingPredicate:predicate];
【讨论】：
【参考方案3】：我已经解决了我的问题，这是我在代码中所做的：
@implementation selectTeam
int flag;
- (void)viewDidLoad
[super viewDidLoad];
flag = 1;
NSString *mainurl = [NSString stringWithFormat:@"http://192.168.1.102/redbull11/webservices/api/getMatcheSquad/"];
NSString *playerurl = [NSString stringWithFormat:@"%@%@",mainurl,match_id2];
NSURL *url=[NSURL URLWithString:playerurl];
NSLog(@"mainurl: %@",url);
NSURLSessionConfiguration *csc=[NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *csession = [NSURLSession sessionWithConfiguration:csc delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
NSURLSessionDataTask *ctask=[csession dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_LOW, 0), ^
getsuccess = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
dispatch_async(dispatch_get_main_queue(), ^
NSString *success =[getsuccess valueForKey:@"success"];
if([success boolValue] == YES)
NSArray *arr =[getsuccess valueForKey:@"data"];
for ( NSDictionary *dic2 in arr)
NSMutableArray *temp =[[NSMutableArray alloc]init];
playerrole = [[dic2 valueForKey:@"PlayingRole"]stringValue];
NSLog(@"role: %@",playerrole);
if ([playerrole isEqual:@"1"])
[temp addObject:[dic2 valueForKey:@"playerShortName"]];
[temp addObject:[dic2 valueForKey:@"Credit"]];
[temp addObject:[dic2 valueForKey:@"Player_Points"]];
[temp addObject:[dic2 valueForKey:@"TeamName"]];
[temp addObject:[dic2 valueForKey:@"PlayingRole"]];
[wkeeper addObject:temp];
else if ([playerrole isEqual:@"2"])
[temp addObject:[dic2 valueForKey:@"playerShortName"]];
[temp addObject:[dic2 valueForKey:@"Credit"]];
[temp addObject:[dic2 valueForKey:@"Player_Points"]];
[temp addObject:[dic2 valueForKey:@"TeamName"]];
[temp addObject:[dic2 valueForKey:@"PlayingRole"]];
[allrounder addObject:temp];
else if ([playerrole isEqual:@"3"])
[temp addObject:[dic2 valueForKey:@"playerShortName"]];
[temp addObject:[dic2 valueForKey:@"Credit"]];
[temp addObject:[dic2 valueForKey:@"Player_Points"]];
[temp addObject:[dic2 valueForKey:@"TeamName"]];
[temp addObject:[dic2 valueForKey:@"PlayingRole"]];
[batsman addObject:temp];
else if ([playerrole isEqual:@"4"])
[temp addObject:[dic2 valueForKey:@"playerShortName"]];
[temp addObject:[dic2 valueForKey:@"Credit"]];
[temp addObject:[dic2 valueForKey:@"Player_Points"]];
[temp addObject:[dic2 valueForKey:@"TeamName"]];
[temp addObject:[dic2 valueForKey:@"PlayingRole"]];
[bowler addObject:temp];
[_playerselect reloadData];
[MBProgressHUD hideHUDForView:self.view animated:YES];
);
);
];
[ctask resume];
- (IBAction)wicketkeeper:(id)sender
flag=1;
_pickplayers.text= @"PICK 1 WICKET-KEEPER";
[_playerselect reloadData];
- (IBAction)batsman:(id)sender
flag=3;
_pickplayers.text= @"PICK 3-5 BATSMEN";
[_playerselect reloadData];
- (IBAction)allrounder:(id)sender
flag=2;
_pickplayers.text= @"PICK 1-3 ALL-ROUNDERS";
[_playerselect reloadData];
- (IBAction)bowler:(id)sender
flag=4;
_pickplayers.text= @"PICK 3-5 BOWLERS";
[_playerselect reloadData];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
selectTeamCell *cell = [tableView dequeueReusableCellWithIdentifier:@"names" forIndexPath:indexPath];
NSMutableArray *arr =[[NSMutableArray alloc]init];
if (flag==1)
arr = [wkeeper objectAtIndex:indexPath.row];
NSLog(@"%ld",(long)indexPath.row);
else if (flag==2)
arr = [allrounder objectAtIndex:indexPath.row];
NSLog(@"%ld",(long)indexPath.row);
else if (flag==3)
arr = [batsman objectAtIndex:indexPath.row];
NSLog(@"%ld",(long)indexPath.row);
else
arr = [bowler objectAtIndex:indexPath.row];
NSLog(@"%ld",(long)indexPath.row);
cell.playerName.text = [arr objectAtIndex:0];
cell.playerCredit.text = [[arr objectAtIndex:1]stringValue];
cell.playerPoints.text = [[arr objectAtIndex:2]stringValue];
cell.teamName.text = [arr objectAtIndex:3];
return cell;
【讨论】：
很高兴您设法解决了您的问题。作为一个建议，你可以通过在 Objective-C 中使用新的语法来清理你的代码。例如，您可以简单地执行someArray[number] 而不是[someArray objectAtIndex:number]，效果相同。这也适用于NSDictionary，您可以在其中使用someDictionary[@"key"] 而不是[someDictionary valueForKey:@"key"]。编码愉快！
要初始化NSArray、NSNumber和NSDictionary，你可以使用literal syntax。
@AlejandroIván 谢谢你的建议兄弟！！我已经按照你的建议做了！！谢谢你的帮助！！以上是关于在iOS中单击按钮时如何在UITableView中获取特定的JSON数据（目标c）？的主要内容，如果未能解决你的问题，请参考以下文章