如何糾正這種錯誤在我的情況_NSArrayM objectAtIndex：]：指數8超出範圍[0..7]」

Question

在這個屏幕截圖我有兩個下拉列表的問題和projects.If我的問題滾動下拉它顯示錯誤_NSArrayM objectAtIndex：]：索引8超越邊界[0 .. 7]'。儘管我動態獲取值。

我的JSON響應這樣的項目下拉：

{ 
    "projects": [ 
     { 
     "id": 8, 
     "name": "Andriod APP", 
     "identifier": "andriod-app", 
     "description": "", 
     "status": 1, 
     "is_public": true, 
     "created_on": "2015-06-29T11:54:23Z", 
     "updated_on": "2015-06-29T11:54:23Z" 
     }, 
     ], 
     "total_count": 8, 
     "offset": 0, 
     "limit": 25 
     } 

my json response like this for issues drpdown 
    { 
    "issues": [ 
    { 
     "id": 22, 
     "project": { 
     "id": 4, 
     "name": "Vitals" 
     }, 
     "tracker": { 
     "id": 3, 
     "name": "Support" 
     }, 
     "status": { 
     "id": 1, 
     "name": "New" 
     }, 
     "priority": { 
     "id": 2, 
     "name": "Normal" 
     }, 
     "author": { 
     "id": 1, 
     "name": "Redmine Admin" 
     }, 
     "subject": "Lead page creation", 
     "description": "", 
     "start_date": "2015-06-25", 
     "done_ratio": 0, 
     "created_on": "2015-06-25T10:22:22Z", 
     "updated_on": "2015-06-25T10:22:22Z" 
    }, 
    ], 
    "total_count": 17, 
    "offset": 0, 
    "limit": 25 
} 

我的一段代碼：

#import <UIKit/UIKit.h> 
@interface ViewController : UIViewController 
<UITableViewDelegate,UITableViewDataSource> 
@property (weak, nonatomic) IBOutlet UIButton *btnoutlet; 
@property (weak, nonatomic) IBOutlet UITableView *tableView; 
@property (strong,nonatomic) NSArray * data; 
- (IBAction)btnAction:(id)sender; 
@property (weak, nonatomic) IBOutlet UIButton *btnoutlet1; 
@property (weak, nonatomic) IBOutlet UITableView *tableView1; 
@property (strong,nonatomic) NSArray * data1; 
- (IBAction)btnAction1:(id)sender; 
@end 

#import "ViewController.h" 
@interface ViewController() 
@end 
@implementation ViewController 
- (void)viewDidLoad { 
[super viewDidLoad]; 
// to fetch and parse json response of projects dropdown 
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURLWithString:@"http:xxx/projects.json"]]; 
NSError * error = nil; 
NSURLResponse * response = nil; 
NSData * jsonSource = [NSURLConnection sendSynchronousRequest:urlRequest 
returningResponse:&response error:&error]; 
id jsonObjects = [NSJSONSerialization JSONObjectWithData: 
jsonSource options:NSJSONReadingMutableContainers error:nil]; 
if ([jsonObjects objectForKey:@"projects"] != [NSNull null]) { 
self.data = [jsonObjects objectForKey:@"projects"]; 
NSLog(@" %@",self.data); 
} 
self.tableView.delegate = self; 
self.tableView.dataSource = self; 
self.tableView.tableFooterView =[UIView new]; 
// to fetch and parse the json response of issues dropdown 
NSURLRequest * urlRequest1 = [NSURLRequest requestWithURL:  [NSURLURLWithString:@"http:xxx/redmine/issues.json"]]; 
NSError * error1 = nil; 
NSURLResponse * response1 = nil; 
NSData * jsonSource1 = [NSURLConnection sendSynchronousRequest:urlRequest1returningResponse:&response1error:&error1]; 
id jsonObjects1 = [NSJSONSerialization JSONObjectWithData:jsonSource1 options:NSJSONReadingMutableContainers error:nil]; 
if ([jsonObjects1 objectForKey:@"issues"] != [NSNull null]) { 
self.data1 = [jsonObjects1 objectForKey:@"issues"]; 
NSLog(@" %@",self.data1); 
} 
self.tableView1.delegate = self; 
self.tableView1.dataSource = self; 
self.tableView1.tableFooterView =[UIView new]; 
} 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
if(tableView == self.tableView) 
{ 
return [self.data count]; 
} 
if(tableView == self.tableView1) 
{ 
return [self.data1 count]; 
} 
return 0; 
} 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
static NSString *simpleTableIdentifier = @"SimpleTableItem"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 
NSDictionary * tmpdict = [self.data objectAtIndex:indexPath.row]; 
NSLog(@ " %@",tmpdict); 
NSDictionary * tmpdict2 = [self.data1 objectAtIndex:indexPath.row]; 
NSLog(@ " %@",tmpdict2); 
if (cell == nil) { 
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier]; 
} 
if(tableView == self.tableView){ 
cell.textLabel.font = [UIFont systemFontOfSize:12]; 
cell.backgroundColor = [UIColor greenColor]; 
cell.textLabel.text = [tmpdict objectForKey:@"name"]; 
NSLog(@ " %@",cell.textLabel.text); 
} 
else if(tableView == self.tableView1) { 
cell.backgroundColor = [UIColor greenColor]; 
cell.textLabel.text = [tmpdict2 objectForKey:@"subject"]; 
NSLog(@ " %@",cell.textLabel.text); 
} 
// cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; 
return cell; 
} 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
if (tableView==self.tableView) { 
UITableViewCell * Cell = [self.tableView cellForRowAtIndexPath:indexPath]; 
[self.btnoutlet setTitle:Cell.textLabel.text forState:UIControlStateNormal]; 
self.tableView.hidden = YES; 
} 
if (tableView==self.tableView1) { 
UITableViewCell * Cell = [self.tableView1 cellForRowAtIndexPath:indexPath]; 
[self.btnoutlet1 setTitle:Cell.textLabel.text forState:UIControlStateNormal]; 
self.tableView1.hidden = YES; 
} 
} 

這裏可能是錯誤？在這個代碼或任何修改needed.Please建議一些想法。

Answer 1

你需要把：

NSDictionary * tmpdict = [self.data objectAtIndex:indexPath.row]; 
NSLog(@ " %@",tmpdict); 
NSDictionary * tmpdict2 = [self.data1 objectAtIndex:indexPath.row]; 
NSLog(@ " %@",tmpdict2); 

內適當if條件。在當前情況下，如果self.data和self.data1計數出現差異，則會崩潰。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *simpleTableIdentifier = @"SimpleTableItem"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 
    if (cell == nil) 
    { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier]; 
    } 

    if(tableView == self.tableView) 
    { 
     NSDictionary * tmpdict = [self.data objectAtIndex:indexPath.row]; 
     NSLog(@ " %@",tmpdict); 
     cell.textLabel.font = [UIFont systemFontOfSize:12]; 
     cell.backgroundColor = [UIColor greenColor]; 
     cell.textLabel.text = [tmpdict objectForKey:@"name"]; 
     NSLog(@ " %@",cell.textLabel.text); 
    } 
    else if(tableView == self.tableView1) 
    { 
     NSDictionary * tmpdict2 = [self.data1 objectAtIndex:indexPath.row]; 
     NSLog(@ " %@",tmpdict2); 
     cell.backgroundColor = [UIColor greenColor]; 
     cell.textLabel.text = [tmpdict2 objectForKey:@"subject"]; 
     NSLog(@ " %@",cell.textLabel.text); 
    } 
    // cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; 
    return cell; 
}