问题
I wrote code.
I want to save integer using nsuserdefault.
But this code happen EXC_BAD_ACCESS and SIGABRT.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
...
[self desave:[newys integerValue] :[newms integerValue]];
...
}
...
- (void)desave:(NSInteger*)year :(NSInteger*)month//←EXC BAD ACCESS happened on this row.
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:year forKey:@"year"];//←SIGABRT happened on this row.
[defaults synchronize];
}
回答1:
Based on your desave method signature, you're passing an NSInteger* as an argument where an NSInteger is expected. NSInteger is not an object derived from NSObject, it's a primitive.
回答2:
The problem is caused by the needless pointers being used for the NSInteger parameters.
Change:
- (void)desave:(NSInteger*)year :(NSInteger*)month
to:
- (void)desave:(NSInteger)year :(NSInteger)month
NSInteger is not a class type.
You should also name your method a little better. Right now the name is desave::. It would be better if it was:
- (void)desaveYear:(NSInteger*)year month:(NSInteger*)month
Now the name is desaveYear:month:.
And now you can call it with:
[self desaveYear:[newys integerValue] month:[newms integerValue]];
回答3:
You are passing a pointer to an NSInteger. The simplest way to solve this is:
- (void)desave:(NSInteger)year :(NSInteger)month
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:year forKey:@"year"];
[defaults synchronize];
}
回答4:
On your method
- (void)desave:(NSInteger*)year :(NSInteger*)month
You are sending both year and month variables pointers. This sends the memory addresses instead. Try with this instead
- (void)desave:(NSInteger)year :(NSInteger)month
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:year forKey:@"year"];
[defaults synchronize];
}
来源：https://stackoverflow.com/questions/18338800/why-did-happen-exc-bad-access-and-sigabrt-when-set-integer