Question

以下将NSString设置为文本字段的StringValue。然后，在General_combinations

中比较字符串

- (IBAction)SendAction:(id)sender
{
    NSString *MyLoggerCommand = [CommandBox stringValue];
    [CommandBox setStringValue:@""];
    [[[MyLogger textStorage] mutableString] appendString: MyLoggerCommand];
    [self General_Combinations];
}

- (void)General_Combinations
{
    NSLog(@"General Combinations called..");
    if([MyLoggerCommand isEqualToString:@"this"])
    {
        NSLog(@"Matched..");
    }

}

然而，无论弦是什么，它们永远不会相等。摘录

[CommandBox setStringValue:@""];

不应该影响任何内容，因为在清除实际框之前首先设置了NSString。

Answer 1

问题是当第二种方法不知道那是什么时，你正在比较MyLoggerCommand。试试这段代码：

-(IBAction)SendAction:(id)sender {

    NSString *myLoggerCommand = [CommandBox stringValue];
    [[[MyLogger textStorage] mutableString] appendString: myLoggerCommand];
    [self General_Combinations:myLoggerCommand];
    [CommandBox setStringValue:@""];  
}

-(void)General_Combinations:(NSString *)aString {

    NSLog(@"General Combinations called..");
    if([aString isEqualToString:@"this"])
    {
        NSLog(@"Matched..");
    }
 }

字符串的比较

1 个答案: