UITableview可滾動問題

我正在將我的所有數據添加到我的iPhone應用程序中，編碼完成的不是將數據硬編碼到其中。我遇到了一個問題。我使用的是UITableviews，我在每個表格視圖中添加了大約150-250個項目，它允許我添加數據，但是當我運行它時，不會讓我向下滾動大約12個項目。我希望能夠瀏覽所有200多個我的項目，但正如我所說，它只允許前12個左右。我將在下面發佈我的代碼片段。UITableview可滾動問題

RootTableViewController.h

#import <UIKit/UIKit.h> 

@interface RootTableViewController : UITableViewController 

@end

RootTableViewController.m

#import "RootTableViewController.h" 
#import "SecondTableViewController.h" 

@interface RootTableViewController() 

@end 

@implementation RootTableViewController 
{ 
NSArray *states; 
} 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
self = [super initWithStyle:style]; 
if (self) { 
    // Custom initialization 
} 
return self; 
} 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 

states = [NSArray arrayWithObjects:@"Alabama", @"Georgia", @"Tennessee", @"Colorado", nil]; 
} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
return [states count]; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
//table identifier 
static NSString *simpleTableIdentifier = @"StateCell"; 

//creating a cell 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 

//if cell doesn't have anything in it, creates a new one 
if(cell == nil) 
{ 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier]; 
} 

//creates text for cell, depending on what row it is 
cell.textLabel.text = [states objectAtIndex:indexPath.row]; 
cell.textLabel.font = [UIFont fontWithName:@"Chalkduster" size:17]; 

return cell; 
} 

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
//push segue identifier 'showArrayDetail' 
if([segue.identifier isEqualToString:@"showStateDetail"]) 
{ 
    //row that we clicked on 
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; 

    //'SecondTableVieController' object is created 
    SecondTableViewController *destViewController = segue.destinationViewController; 

    //sets 'stateName' to what row you pick 
    destViewController.stateName = [states objectAtIndex:indexPath.row]; 

    //sets title to 'stateName' you picked 
    destViewController.title = [NSString stringWithFormat:@"%@ Areas", destViewController.stateName]; 
} 
} 

@end

SecondTableViewController.h

#import <UIKit/UIKit.h> 

@interface SecondTableViewController : UITableViewController 

@property (nonatomic, strong) NSString *stateName; 

@end

SecondTableViewController.m

#import "SecondTableViewController.h" 
#import "ThirdTableViewController.h" 

@interface SecondTableViewController() 

@end 

@implementation SecondTableViewController 
{ 
NSArray *areas; 
} 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
self = [super initWithStyle:style]; 
if (self) { 
    // Custom initialization 
} 
return self; 
} 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 

//populating arrays 
NSDictionary *dict = @{@"Alabama":@[@"Moss Rock Preserve Boulder Fields", @"Alabama Area 2", 
@"Alabama Area 3"], @"Georgia": @[@"Georgia Area 1", @"Georgia Area 2", @"Georgia Area 3"], 
@"Tennessee":@[@"Tennessee Area 1", @"Tennessee Area 2", @"Tennessee Area 3"], 
@"Colorado":@[@"Colorado Area 1", @"Colorado Area 2", @"Colorado Area 3"]}; 

areas = dict[self.stateName]; 



} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
return areas.count; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
static NSString *simpleTableIdentifier = @"AreaCell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 
cell.textLabel.text = areas[indexPath.row]; 
return cell; 
} 

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
//push segue identifier 'showArrayDetail' 
if([segue.identifier isEqualToString:@"showAreaDetail"]) 
{ 
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; 
    ThirdTableViewController *destViewController = segue.destinationViewController; 
    destViewController.areaName = areas[indexPath.row]; 
    destViewController.title = [NSString stringWithFormat:@"%@ Climbs", destViewController.areaName]; 
} 
} 

@end

ThirdTableViewController.h

#import <UIKit/UIKit.h> 

@interface ThirdTableViewController : UITableViewController 

@property (nonatomic, strong) NSString *areaName; 

@end

ThirdTableViewController.m

#import "ThirdTableViewController.h" 
#import "FourthTableViewController.h" 

@interface ThirdTableViewController() 

@end 

@implementation ThirdTableViewController 
{ 
NSArray *climbs; 
} 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
self = [super initWithStyle:style]; 
if (self) { 
    // Custom initialization 
} 
return self; 
} 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 

//populating arrays 
NSDictionary *dict = @{@"Moss Rock Preserve Boulder Fields":@[@"Tesseract", @"Chalky Dreams", 
@"Aristocratic Nose", @"Bee Stings", @"Recovery Run Traverse", @"Heel Shock", @"Fourth of July", 
@"No Sack", @"Poop Dreams", @"Hoop Dreams", @"Grass Man Traverse", @"Mikey Likes It", @"Just 
Throw", @"Rapture"], @"Georgia Area 1": @[@"Georgia Climb 1", @"Georgia Climb 2", @"Georgia 
Climb 3"], @"Tennessee Area 1":@[@"Tennessee Climb 1", @"Tennessee Climb 2", @"Tennessee Climb 
3"], @"Colorado Area 1":@[@"Colorado Climb 1", @"Colorado Climb 2", @"Colorado Climb 3"]}; 

climbs = dict[self.areaName]; 
} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
return climbs.count; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
static NSString *simpleTableIdentifier = @"ClimbCell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 
cell.textLabel.text = climbs[indexPath.row]; 
return cell; 
} 

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
//push segue identifier 'showArrayDetail' 
if([segue.identifier isEqualToString:@"showClimbDetail"]) 
{ 
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; 
    FourthTableViewController *destViewController = segue.destinationViewController; 
    destViewController.climbName = climbs[indexPath.row]; 
    destViewController.title = [NSString stringWithFormat:@"%@ Specs", destViewController.climbName]; 
} 

} 

@end

FourthViewController.h

#import <UIKit/UIKit.h> 

@interface FourthTableViewController : UITableViewController 

@property (nonatomic, strong) NSString *climbName; 

@end

FourthViewController.m

#import "FourthTableViewController.h" 

@interface FourthTableViewController() 

@end 

@implementation FourthTableViewController 
{ 
NSArray *specs; 
} 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
self = [super initWithStyle:style]; 
if (self) { 
    // Custom initialization 
} 
return self; 
} 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 

//populating arrays 
NSDictionary *dict = @{@"Tesseract":@[@"Alabama Spec 1", @"Alabama Spec 2", @"Alabama Spec 3"], 
@"Georgia Climb 1": @[@"Georgia Spec 1", @"Georgia Spec 2", @"Georgia Spec 3"], @"Tennessee 
Climb 1":@[@"Tennessee Spec 1", @"Tennessee Spec 2", @"Tennessee Spec 3"], @"Colorado Climb 
1":@[@"Colorado Spec 1", @"Colorado Spec 2", @"Colorado Spec 3"]}; 

specs = dict[self.climbName]; 

} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
return specs.count; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
static NSString *simpleTableIdentifier = @"SpecCell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; 
cell.textLabel.text = specs[indexPath.row]; 
cell.textLabel.font = [UIFont fontWithName:@"Chalkduster" size:17]; 

return cell; 
}

我想我需要添加一個「滾動節」就像我會在一個Java應用程序，但它已經是滾動....

謝謝

來源

2014-05-15 javaGeek

你用什麼數組/字典填充tableView？如果在這種情況下使用'爬升'，則只能獲得大約3個項目。請提供您的代碼爲'tableView：cellForRowAtIndexPath'和'tableView：numberOfRowsInSection' – Emil

@Emil對不起，剛剛添加了我的代碼的其餘部分，應該更好地顯示我的問題 – javaGeek

self.areaName的內容是什麼？ – J2theC

好的，所以我把正確的評論移到這裏。

當你到達桌子的盡頭時，你仍然可以將它拉伸一點點？當你這樣做時，是否有任何單元格有數據但隱藏在tableView的框架之外？如果是這樣，請檢查tableView的框架。

來源

2014-05-15 20:49:04 Envil

UITableview可滾動問題

回答

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