Question

我正在尝试将一个BOOL设置为NSUserDefaults中的一个键，但它似乎没有工作，因为我每次启动都会在控制台中显示NSLog(@"called");。如果你能告诉我哪里出错了，我真的很感激。

for (int i = 0; i < 7; i++) {
        CheckBox*btn = [[CheckBox alloc] init];
        [btn setFrame:CGRectMake(0, 0, 40, 40)];
        [btn setTag:i];
        UIImage *img = [UIImage imageNamed:[[NSUserDefaults standardUserDefaults] boolForKey:[NSString stringWithFormat:@"%i", btn.tag]] ? @"checkbox.png":@"checkbox-pressed.png"];
        [btn setImage:img forState:UIControlStateNormal];
        [_checkboxArray addObject:btn];
        [btn release];
        [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:i inSection:0]] withRowAnimation:UITableViewScrollPositionBottom];
    }
    if ([[NSUserDefaults standardUserDefaults] boolForKey:kFL]) {
        return;
    }
    else {
        NSMutableArray *custArr = [[NSMutableArray alloc] init];
        for (int i = 0; i < [_checkboxArray count]; i ++) {
            CheckBox *c = (CheckBox *)[_checkboxArray objectAtIndex:i];
            [c setImage:[UIImage imageNamed:@"checkbox.png"] forState:UIControlStateNormal];
            [[NSUserDefaults standardUserDefaults] setBool:YES forKey:[NSString stringWithFormat:@"%i", [c tag]]];
            [custArr addObject:c];
        }
        [_checkboxArray removeAllObjects];
        [_checkboxArray addObjectsFromArray:custArr];
        [custArr release];
        [self.tableView reloadData];
        NSLog(@"called");
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:kFL];

    }

Answer 1

请务必致电

[[NSUserDefaults standardUserDefaults] synchronize];

进行任何更改后

NSUserDefaults值未设置

1 个答案: