ios - 用逗号分隔 NSMutablestring

Question

我正在尝试附加两个 NSMutablestring，但我想在它们之间使用逗号分隔。现在我使用的代码是这样的：

NSString *astring = @"This is a string";
teststring = [[NSMutableString alloc]init];
[teststring appendString:astring];
NSLog(@"%@",teststring);

结果是：这是一个字符串这是一个字符串

我尝试：

[teststring appendFormat:@",%@",astring];

但仍然没有运气。

请帮忙，问候。

Answer 1

  teststring = [[NSMutableString alloc]init];
 [teststring appendString:@","];
  [teststring appendString:astring];

Answer 2

尝试这个

NSString *astring = @"This is a string";
teststring = [[NSMutableString alloc]init];

[teststring appendString:astring];
[teststring appendString:@","];
[teststring appendString:astring];

NSLog(@"%@",teststring);

Answer 3

尝试这个

NSString *string = @"Hello World";

NSMutableString * secondstring =[[NSMutableString alloc]init];

[secondstring appendString:string] 
[secondstring appendString:@","];
[secondstring appendString:string];

如果你想看到这个字符串

NSLog(@"%@",secondstring);

Answer 4

我使用了它，它对我来说工作正常：

NSMutableString *teststring = [[NSMutableString alloc]init];
NSMutableString *astring = [[NSMutableString alloc]init];
[astring appendString:@"I am appending this string"];
[teststring appendFormat:@",%@",astring];
NSLog(@"string : %@",teststring);

开/关： string : ,I am appending this string