stringByAppendingPathComponent 在文本中添加一个 '/' 字符

Question

I have the following code:

NSString *message;
if (some_condition) {
    message = @"String 1. ";
} else {
    message = @"String 2. ";

}
message = [message stringByAppendingPathComponent:@"Bla bla bla."];
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Alert"
                                                               message:message
                                                        preferredStyle:UIAlertControllerStyleAlert];

The text that I see when the alert pops up has an extra '/' character where the string were appended:

Where did it come from and how do I remove it?

Answer 1

You are using the wrong method there.

Instead of :

message = [message stringByAppendingPathComponent:@"Bla bla bla."];

Use:

message = [message stringByAppendingString:@"Bla bla bla."];

When you use stringByAppendingPathComponent: it will return a new string made by appending the provided string to the receiver, preceded if necessary by a path separator.

Reference : NSString Class Reference