从 NSMutable 数组中检索整数数据
我在从 NSMutable 数组获取整数值时遇到问题。我在屏幕上有几个具有匹配标签属性值的按钮（button1 的标签值为 1 等）。当按下按钮时，我将数字标签值添加到 NSMutable 数组中。稍后，我想循环访问对象以查看按下哪些值来构建查询。但是，我在循环中收到 SIGABRT 错误。
//pairNumber is the 'tag' value from a button
-(void) numberSearchArray:(NSInteger)pairNumber;
{
[self.queryPairs addObject:[NSNumber numberWithInt: pairNumber]];
}
//***************************
-(void)buildQuery:(BOOL *)function numberToUse:(NSInteger)number
{
//other code not shown
int pair_values [6];
int compare_total = [queryPairs count];
for (int x = 0; x<=compare_total-1; x++){
pair_values[x] = (NSUInteger)[queryPairs objectAtIndex:x]; //SIGABRT error
//code continued...
}
I am having an issue getting integer values form an NSMutable array. I have several buttons on the screen with a matching tag property value (button1 has a tag value of 1, etc.). When a button is pressed, I add the numeric tag value to the NSMutable array. Later, I want to loop through the objects to see what values are pressed to build a query. However, Iget a SIGABRT error in the loop.
//pairNumber is the 'tag' value from a button
-(void) numberSearchArray:(NSInteger)pairNumber;
{
[self.queryPairs addObject:[NSNumber numberWithInt: pairNumber]];
}
//***************************
-(void)buildQuery:(BOOL *)function numberToUse:(NSInteger)number
{
//other code not shown
int pair_values [6];
int compare_total = [queryPairs count];
for (int x = 0; x<=compare_total-1; x++){
pair_values[x] = (NSUInteger)[queryPairs objectAtIndex:x]; //SIGABRT error
//code continued...
}
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你需要做：
you need to do:
您没有对pair_values进行边界检查，您的queryPairs数组中是否有超过6个项目？
You're not bounds checking pair_values, do you have more than 6 items in your queryPairs array?