Uitableview 使用NSMutableDictionary和数组填充单元格的TableView
我刚开始学习Xcode,读了这本书,现在尝试实现我读到的东西。应用程序需要将某些数据存储在数组和字典中,然后“表视图”通过自动计算节数、行数并用分配给关键字的内容填充表单元格来提取数据 请看我的代码,因为我一直在尝试运行该应用程序,但它给了我SIGABRT错误。我不知道新Xcode是否没有这样声明或调用东西我的书是为iOS3写的。我试图从博客、youtube上找到解决方案,但该应用程序目前还没有运行。 我知道我在AppDelegate文件等中正确声明了所有内容,因为我使用了某人的示例代码one 1数组。表视图被填充 帮帮我,因为我的NSMutableDictionary和indexPath代码有问题。谢谢大家!Uitableview 使用NSMutableDictionary和数组填充单元格的TableView,uitableview,nsmutablearray,nsmutabledictionary,nsindexpath,Uitableview,Nsmutablearray,Nsmutabledictionary,Nsindexpath,我刚开始学习Xcode,读了这本书,现在尝试实现我读到的东西。应用程序需要将某些数据存储在数组和字典中,然后“表视图”通过自动计算节数、行数并用分配给关键字的内容填充表单元格来提取数据 请看我的代码,因为我一直在尝试运行该应用程序,但它给了我SIGABRT错误。我不知道新Xcode是否没有这样声明或调用东西我的书是为iOS3写的。我试图从博客、youtube上找到解决方案,但该应用程序目前还没有运行。 我知道我在AppDelegate文件等中正确声明了所有内容,因为我使用了某人的示例代码one
#import "TableViewController.h"
@implementation TableViewController
@synthesize tableData;
@synthesize tableSections;
#pragma mark - View lifecycle
- (void)viewDidLoad
{ [self createData];
[super viewDidLoad];
}
-(void)createData{
NSMutableArray *category1;
NSMutableArray *category2;
category1=[[NSMutableArray alloc] init];
category2=[[NSMutableArray alloc] init];
tableSections=[[NSMutableArray alloc] initWithObjects:@"Category 1", @"Category 2", nil];
tableData=[[NSMutableArray alloc] initWithObjects:category1, category2, nil];
[category1 addObject:[[NSMutableDictionary alloc]
initWithObjectsAndKeys:@"TitleA", @"name",@"A",@"property", nil]];
[category1 addObject:[[NSMutableDictionary alloc]
initWithObjectsAndKeys:@"TitleB", @"name",@"B",@"property", nil]];
[category2 addObject:[[NSMutableDictionary alloc]
initWithObjectsAndKeys:@"TitleC", @"name",@"C",@"property", nil]];
[category2 addObject:[[NSMutableDictionary alloc]
initWithObjectsAndKeys:@"TitleD", @"name",@"D",@"property", nil]];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [tableSections count];
//return [self.tableSections count]; Also tried to use with self. Don’t know which one is correct
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [[self.tableSections objectAtIndex:section] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [[[tableData objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] objectForKey:@"name"];
/* Also tried this:
tableData *cellObj = [[self.tableData objectAtIndex:indexPath.section]objectAtIndex:indexPath.row];
cell.textLabel.text = cellObj.name;
/* Also tried this:
tableData *cellObj= [[[self.tableData objectAtIndex:indexPath.section]objectAtIndex:indexPath.row]objectForKey:@"name"];
cell.textLabel.text=smsObj.name; */
/* Also tried this:
NSDictionary *item = (NSDictionary *)[self.tableData objectAtIndex:indexPath.row];
cell.textLabel.text = [item objectForKey:@"name"];*/
/* Also tried this way:
NSDictionary *dictionary = [tableData objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"name"];
NSString *cellValue = [array objectAtIndex:indexPath.row];
cell.text = cellValue;
And the same way, but switched order of NSArray and NSDictionary*/
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// This I will add later, after I make my Table View Controller work
}
@end
我知道我在代码方面做了一些非常愚蠢的事情,但我正在尝试理解编写代码的正确方法…[category1 addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@TitleA、@name、@A、@property、nil]]; [category1 addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@TitleB、@name、@B、@property、nil]] [category2 addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@TitleC、@name、@C、@property、nil]] [category2 addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:@TitleD、@name、@D、@property、nil]] } 在初始化这些数组后添加此代码,然后重试