iphonesdk附加字符串问题
我有一个 nsmutablearray 有 5 个对象。
例如，如果它包含苹果、猫、球、狗、蚂蚁等对象，我希望它们附加以逗号分隔，例如苹果、猫、球、狗、蚂蚁。请帮我解决这个问题。
编辑
publishingpost //nsmutable array contains all these object
-(ibaction)post
{
nsstring *str;
nsstring *str2 =@",";
for(int i = 0; i< [publishingpost count]; i++){
nsstring *str = [publishingpost objectAtIndex:i];
//append both str1, str2 to generate comma separated objects
}
i have a nsmutablearray which have 5 objects.
for example if it contain objects like apple, cat , ball, dog ,ant, i want them to append with comma separated that is like apple, cat , ball, dog ,ant. please help me with this.
edit
publishingpost //nsmutable array contains all these object
-(ibaction)post
{
nsstring *str;
nsstring *str2 =@",";
for(int i = 0; i< [publishingpost count]; i++){
nsstring *str = [publishingpost objectAtIndex:i];
//append both str1, str2 to generate comma separated objects
}
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使用
- (NSString *)componentsJoinedByString:(NSString *)separator代替：use
- (NSString *)componentsJoinedByString:(NSString *)separatorinstead:查看 此处。如果你已经有了弦，这应该很容易做到。
在 for 循环之前声明一个 NSString 对象（或使用
str），并在循环过程中附加到该对象。并且您不应该在代码中声明str两次。可能想重命名其中之一。Take a look at
stringByAppendingString:orstringByAppendingFormatfrom here. It should be easy enough to do if you already have the Strings.Declare an NSString object before the for loop (or use
str) and append to that while going through the loop. And you're not supposed to declarestrtwice in your code. Might want to rename one of them.