当我点击一个单元格时,我正在崩溃(应用程序在iOS模拟器中退出)。错误代码是
“EXC_BAD_ACCESS(code = 1,address = 0x310cc493)
以下是代码:
// .h
#import <UIKit/UIKit.h>
@interface ChecklistsViewController : UITableViewController
@end
// .m
#import "ChecklistsViewController.h"
@interface ChecklistsViewController ()
@end
@implementation ChecklistsViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 100;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ChecklistItem"];
UILabel *label = (UILabel *)[cell viewWithTag:1000];
if (indexPath.row % 5 == 0) {
label.text = @"Walk the dog";
} else if (indexPath.row % 5 == 1) {
label.text = @"Brush my teeth";
} else if (indexPath.row % 5 == 2) {
label.text = @"Learn iOS development";
} else if (indexPath.row % 5 == 3) {
label.text = @"Soccer practice";
} else if (indexPath.row % 5 == 4)
label.text = @"Eat ice cream";
return cell;
}
- tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
} // Control reaches end of non-function
@end
答案 0 :(得分:3)
在您的示例中,如果没有出列,则不会分配UITableViewCell
。你需要做这样的事情:
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ChecklistItem"];
if( cell == nil ) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:@"ChecklistItem"] autorelease];
// whatever additional initialization
...
}
答案 1 :(得分:1)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = @"Cell";
UItableViewCell *cell = (UITableViewCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UItableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
//write your code here
return cell;
}
答案 2 :(得分:0)
您需要在UITableViewCell
方法中分配tableView: cellForRowAtIndexPath:
。
你的方法应该是这样的:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = @"Cell";
UItableViewCell *cell = (UITableViewCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UItableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
//INSERT YOUR CODE
}