ios - UITableViewController 中的 UITableView

Question

我很难将一个 UITableViewController 与另一个 UITableView 一起使用。众所周知，UITableViewController 有自己的UITableView。我使用 UITableView 来显示细节；每个 UITableViewCell 都有对应的字段。所以我用一个唯一的标识符命名每个单元格。但是我需要另一个包含动态原型(prototype)单元格的 UITableView，这个 UITableView 的 字段与预制的 UITableView 不同，行数取决于数组计数。这是我的代码:

@interface CourseJobTVC ()
{ sqlite3 *_db;}

@property (weak, nonatomic) IBOutlet UITableView *cTableLabel;

@end

@implementation CourseJobTVC
@synthesize jDetails=_jDetails;

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

- (void)viewDidLoad
{
    [super viewDidLoad];

    _jDetails = (Jobs *)self.jDetails;

    NSString *title1 = _jDetails.jName;
    self.navigationItem.title = title1;
    [self course];
}


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

-(NSArray *)course;
{
    NSString *sqLiteDb = [[NSBundle mainBundle]pathForResource:@"CourseFindr" ofType:@"sqlite"];
    sqlite3_stmt *statement;
    NSMutableArray *retrieve = [[NSMutableArray alloc] init];
    if (sqlite3_open([sqLiteDb UTF8String], &_db) == SQLITE_OK)
    {
        NSString *query= [NSString stringWithFormat:@"SELECT course. * FROM course INNER JOIN jobsCourse ON jobsCourse.courseID = course.cID WHERE jobsCourse.jobID = %d", _jDetails.jID];

        if (sqlite3_prepare_v2(_db, [query UTF8String], -1, &statement, nil) == SQLITE_OK)
        {
            while (sqlite3_step(statement) == SQLITE_ROW)
            {
                int _cID = sqlite3_column_int(statement, 0);
                char *cNameChars = (char *) sqlite3_column_text(statement,1);
                char *cDescChars = (char *) sqlite3_column_text(statement, 2);
                char *cSchoolChars = (char *) sqlite3_column_text (statement, 3);
                char *cProgramChars = (char *) sqlite3_column_text(statement, 4);
                NSString *_cName =cNameChars?[[NSString alloc]initWithUTF8String:cNameChars]:@"";
                NSString *_cDesc = cDescChars?[[NSString alloc]initWithUTF8String:cDescChars]:@"";
                NSString *_cSchool = cSchoolChars?[[NSString alloc]initWithUTF8String:cSchoolChars]:@"";
                NSString *_cProgram = cProgramChars?[[NSString alloc]initWithUTF8String:cProgramChars]:@"";
                Course *courses = [[Course alloc]
                                   initWithCID:_cID
                                   cName:_cName
                                   cDesc:_cDesc
                                   cSchool:_cSchool
                                   cProgram:_cProgram];
                [retrieve addObject:courses];
            }
            sqlite3_finalize(statement);
        }

    }
    return retrieve;
}



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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
     if(tableView == self.cTableLabel) {NSLog(@"Array count: %d", [self.course count]);
        return [self.course count];}

    return 0;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell ;
    if(tableView != self.cTableLabel){
    //jobName
    cell = [self.tableView dequeueReusableCellWithIdentifier:@"jNameCell"];
    if(cell ==nil)
    { cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"jNameCell"];
        cell.textLabel.text =_jDetails.jName;}

   //jobEarnings
   cell =[self.tableView dequeueReusableCellWithIdentifier:@"jEarningsCell"];
    if(cell ==nil)
    {cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"jEarningsCell"];
        cell.detailTextLabel.text = _jDetails.jEarnings;}

    //jobDesc
    cell =[self.tableView dequeueReusableCellWithIdentifier:@"jDescCell"];
    if(cell == nil)
    { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"jDescLabel"];
        cell.detailTextLabel.text =_jDetails.jDesc;}
   return cell;}

else if(tableView == self.cTableLabel){

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"showCDetails"];
    Course *courses = [self.course objectAtIndex:indexPath.row];
    cell.textLabel.text =courses.cName;
    cell.detailTextLabel.text =courses.cSchool;
    return cell;
}
    return 0;
}

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([[segue identifier]isEqualToString:@"showCourseDetails"]) {
        CourseTVC  *courseTVC = [segue destinationViewController];

        courseTVC.cDetails = [self.course objectAtIndex:[self.cTableLabel indexPathForSelectedRow].row];
    }
}


@end

我的错误是，我无法从预制的 UITableView 加载详细信息。当数组计数超过 2 时，其他 UITableView 崩溃。我我已经尝试过将 UIViewController 与 UITableView 结合使用，但是当详细信息超出页面时，我无法让它滚动。而且它看起来非常杂乱无章。我想用 2 个 UITableViews 尝试 UIViewController 但我的代码确实有问题...请帮助。

崩溃报告:

*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 4 beyond bounds [0 .. 3]'
*** First throw call stack:
(
    0   CoreFoundation                      0x018325e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x015b58b6 objc_exception_throw + 44
    2   CoreFoundation                      0x017e69c2 -[__NSArrayI objectAtIndex:] + 210
    3   UIKit                               0x0076415e -[UITableViewDataSource tableView:heightForRowAtIndexPath:] + 127
    4   UIKit                               0x004f5e67 -[UITableViewController tableView:heightForRowAtIndexPath:] + 76
    5   UIKit                               0x0048cb4b __66-[UISectionRowData refreshWithSection:tableView:tableViewRowData:]_block_invoke + 462
    6   UIKit                               0x0048c450 -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 4190
    7   UIKit                               0x0048f6bd -[UITableViewRowData numberOfRows] + 98
    8   UIKit                               0x00317db2 -[UITableView noteNumberOfRowsChanged] + 120
    9   UIKit                               0x0031775f -[UITableView reloadData] + 814
    10  UIKit                               0x0031b1c3 -[UITableView _reloadDataIfNeeded] + 65
    11  UIKit                               0x0031fde4 -[UITableView layoutSubviews] + 36
    12  UIKit                               0x002a4267 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355
    13  libobjc.A.dylib                     0x015c781f -[NSObject performSelector:withObject:] + 70
    14  QuartzCore                          0x03bf02ea -[CALayer layoutSublayers] + 148
    15  QuartzCore                          0x03be40d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
    16  QuartzCore                          0x03be3f40 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26
    17  QuartzCore                          0x03b4bae6 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294
    18  QuartzCore                          0x03b4ce71 _ZN2CA11Transaction6commitEv + 393
    19  QuartzCore                          0x03b4d544 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
    20  CoreFoundation                      0x017fa4ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
    21  CoreFoundation                      0x017fa41f __CFRunLoopDoObservers + 399
    22  CoreFoundation                      0x017d8344 __CFRunLoopRun + 1076
    23  CoreFoundation                      0x017d7ac3 CFRunLoopRunSpecific + 467
    24  CoreFoundation                      0x017d78db CFRunLoopRunInMode + 123
    25  GraphicsServices                    0x037879e2 GSEventRunModal + 192
    26  GraphicsServices                    0x03787809 GSEventRun + 104
    27  UIKit                               0x00239d3b UIApplicationMain + 1225
    28  CourseFindr                         0x0000768d main + 141
    29  libdyld.dylib                       0x01e6e725 start + 0
)
libc++abi.dylib: terminating with uncaught exception of type NSException

Answer 1

因为您要混合表格 View (尤其是带有原型(prototype)单元格的表格 View )，所以事情会变得有点棘手。

为了简化您的代码，我建议将它们创建为单独的 UIViewController 子类，然后将一个作为 subview Controller 添加到另一个，这样它们就会有自己的委托(delegate)，并且不会混淆上。

Apple 对此有一篇很好的文章: https://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/CreatingCustomContainerViewControllers/CreatingCustomContainerViewControllers.html