用逗號分隔NSMutablestring

Question

我想追加兩個NSMutablestring，但我想讓它們之間的逗號分隔。現在，我使用的代碼是這樣的：

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

結果是：這是一個stringThis是一個String

我試着用：

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

但仍沒有運氣。

請幫忙，問候。

Answer 1

我用這個和它的工作對我罰款：

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

O/P：string : ,I am appending this string

Answer 2

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

Answer 3

試試這個

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

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

NSLog(@"%@",teststring); 

Answer 4

試試這個

NSString *string = @"Hello World"; 

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

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

如果你想看到這個字符串

NSLog(@"%@",secondstring);