我真的需要你的帮助。我试图将一些数据（大约50条记录）加载到UITableView。但是在滚动到tableview结束时它被冻结/挂起。我确实尝试记录显示哪一行。当我向下滚动时，日志显示第1行... 49显示然后它从第42行开始。
这是.h文件：
@interface VDevicesViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>
{
NSString* access_token;
NSMutableArray* data;
NSMutableArray* deviceNotGoodData;
NSArray* _deviceTypeList;
NSArray* _thumnailArray;
DAPagesContainer* pageContainter;
UITableView* tableAllDevices;
UITableView* tableNotGoodDevices;
int currentPage;
UIView * footerView;
UIActivityIndicatorView* indicator;
}
@property (strong, nonatomic) IBOutlet UIView *myView;
-(void)refresh;
@end
这是.m文件
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect screenRect = [[UIScreen mainScreen] bounds];
[self.myView setFrame:CGRectMake(0, 32, screenRect.size.width, screenRect.size.height)];
// Do any additional setup after loading the view
data = [[NSMutableArray alloc] init];
deviceNotGoodData = [[NSMutableArray alloc] init];
pageContainter = [[DAPagesContainer alloc] init];
[pageContainter setPageIndicatorImage:[UIImage imageNamed:@"up_arrow_gray"]];
[pageContainter setTopBarBackgroundColor:[UIColor colorWithRed:24.0f/255.0f green:177.0f/255.0f blue:214.0f/255.0f alpha:1]];
pageContainter.pageItemsTitleColor = [UIColor whiteColor];
[pageContainter willMoveToParentViewController:self];
pageContainter.view.frame = self.myView.bounds;
pageContainter.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
CGFloat width = self.myView.frame.size.width;
CGFloat height = self.myView.frame.size.height - 50;
CGRect tableFrame = CGRectMake(0, 0, width, height);
UIViewController* allDeviceContoler = [[UIViewController alloc] init];
tableAllDevices = [[UITableView alloc] initWithFrame:tableFrame style:UITableViewStylePlain];
tableAllDevices.delegate = self;
tableAllDevices.dataSource = self;
tableAllDevices.tag = 0;
NSString* allDeviceTitle = [NSString stringWithFormat:@"All Devices(%@)", [[NSUserDefaults standardUserDefaults] valueForKey:KEY_DEVICES_USED]];
allDeviceContoler.title = allDeviceTitle;
[allDeviceContoler.view addSubview:tableAllDevices];
UIViewController *notGoodDevicesControler = [[UIViewController alloc] init];
tableNotGoodDevices = [[UITableView alloc] initWithFrame:tableFrame style:UITableViewStylePlain];
tableNotGoodDevices.delegate = self;
tableNotGoodDevices.dataSource = self;
tableNotGoodDevices.tag = 1;
NSString* uncompliantDevices = [NSString stringWithFormat:@"With Issues(%@)", [[NSUserDefaults standardUserDefaults] valueForKey:KEY_DEVICES_UNCOMPLIANT]];
notGoodDevicesControler.title = uncompliantDevices;
[notGoodDevicesControler.view addSubview:tableNotGoodDevices];
[self.myView addSubview:pageContainter.view];
[pageContainter didMoveToParentViewController:self];
pageContainter.viewControllers = @[allDeviceContoler, notGoodDevicesControler];
currentPage = 1;
access_token = [[NSUserDefaults standardUserDefaults] valueForKey:TOKEN_ACCESS_KEY];
_deviceTypeList = [NSArray arrayWithObjects:@"desktop", @"laptop", @"phone", @"tablet", @"server", @"router", @"switch", @"vm", nil];
_thumnailArray = [NSArray arrayWithObjects:@"device_desktop_small", @"device_laptop_small", @"phone", @"tablet", @"device_server_small", @"router", @"switch", @"device_vm_small", nil];
[self GetDevices:[NSNumber numberWithInt:currentPage]];
indicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(screenRect.size.width/2.0, 40, 37, 37)];
[indicator startAnimating];
[self.myView addSubview:indicator];
}
#pragma mark - TableViewDelegate
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView.tag == 0) {
return [data count];
}
else if (tableView.tag == 1)
return [deviceNotGoodData count];
return 0;
}
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString* cellIdentitifier = @"TableCell";
UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:cellIdentitifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentitifier];
}
NSArray* flexData;
if (tableView.tag == 0) {
flexData = [NSArray arrayWithArray:data];
}
else
flexData = [NSArray arrayWithArray:deviceNotGoodData];
if (flexData.count > 0) {
if (indexPath.row < ([flexData count])) {
// add data here
NSLog(@"%ld", (long)indexPath.row);
VDeviceObject * deviceObject = [flexData objectAtIndex:(indexPath.row)];
cell.textLabel.text = deviceObject.hostname;
cell.detailTextLabel.text = deviceObject.username;
cell.detailTextLabel.textColor = [UIColor colorWithRed:180.0f/255.0f green:180.0f/255.0f blue:180.0f/255.0f alpha:1];
if ([deviceObject.numberOfIssues intValue] > 0) {
cell.backgroundColor = [UIColor colorWithRed:247.0f/255.0f green:247.0f/255.0f blue:247.0f/255.0f alpha:1];
}
cell.imageView.image = [UIImage imageNamed:[_thumnailArray objectAtIndex:[deviceObject.deviceType intValue]]];
}
}
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self performSegueWithIdentifier: @"ViewDetail" sender:indexPath];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 65;
}
-(void)GetDevices:(NSNumber*)page {
if (access_token == nil || [access_token isEqualToString:@""]) {
return;
}
NSError* error;
NSData * devicesData = [VTabBarViewController sendSyncGetRequest:[NSString stringWithFormat:@"%@?access_token=%@&limit=%@&GroupBy=issues&page=%@", GEARS_API_GET_DEVICES, access_token, @"50", page] errorCode:error];
NSString* errorString = [[NSString alloc] initWithData:devicesData encoding:NSUTF8StringEncoding];
NSString* stringCode = @"Requested page number exceeds limit";
if ([errorString rangeOfString:stringCode].location != NSNotFound) {
return;
}
NSMutableArray* list = [NSJSONSerialization JSONObjectWithData:devicesData options:NSJSONReadingAllowFragments error:&error];
for (int i = 0 ; i<[list count]; ++i) {
NSDictionary *dict = [list objectAtIndex:i];
NSString* hostName = [dict objectForKey:@"hostname"];
NSString *machine_type = [dict objectForKey:KEY_MACHINE_TYPE];
NSNumber* numberIssues = [dict objectForKey:KEY_TOTAL_ISSUE];
NSDictionary *userinfo = [dict objectForKey:KEY_USER_INFO];
NSString* username = [userinfo objectForKey:KEY_USER_NAME];
NSString* hwid = [dict objectForKey:KEY_HWID];
VDeviceObject *object = [[VDeviceObject alloc] init];
object.username = username;
object.deviceType = [self deviceType:machine_type];
object.numberOfIssues = numberIssues;
object.hostname = hostName;
object.hardwareId = hwid;
[data addObject:object];
if ([object.numberOfIssues intValue] > 0) {
[deviceNotGoodData addObject:object];
}
}
NSLog(@"On page: %d", currentPage);
//[tableAllDevices reloadData];
//[tableNotGoodDevices reloadData];
}
这是展示我遇到的问题的gif图片（我确实尝试减小尺寸，但质量太差了） http://s934.photobucket.com/user/quocvinh_2009/media/TableView%20Bug.gif.html
谢谢...
更新：我尝试添加＆＃39; UITableView＆＃39;通过故事板，连接到＆＃39; IBOutlet＆＃39;，它的工作原理。所以也许我在桌子上做错了什么：（
答案 0 :(得分：0)
显示前41行的数据，所以我假设deliegates没问题。
问题在第42行上升。您当时可能会显示7行或8行。因此在显示第49行或第50行时会出现问题。根据您的规格不存在。然而，UITableView正在尝试获取该行。
我建议检查表计数：
NSLog(@"Rows %d",[tablename count]);
并检查UITableView数据源长度是否正确：
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [tableArray count];
}
答案 1 :(得分：0)
感谢帮助我。 正确的问题是因为我用于这个项目的开源。 以下是需要
的人的参考https://github.com/daria-kopaliani/DAPagesContainer/issues/9