将NSString字符串转换为NSArray数组,componentsSeparatedByString,将array数组转换为string字符串,componentsJoinedByString
将string字符串转换为array数组
NSString *a = [[NSString alloc] initWithString : @"冬瓜,西瓜,火龙果,大头,小狗" ];
NSArray *b = [a componentsSeparatedByString:@","];
NSString *a3 = [b objectAtIndex:2];
NSLog(@" b的第三个东东是: %@", a3);
[a release];
NSArray *array = [Str componentsSeparatedByString:@","];
==反向方法
将array数组转换为string字符串
NSArray *array = [NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];
NSString *string = [array componentsJoinedByString:@","];
NSLog(@"string:%@",string);
NSString *tempString = [mutableArray componentsJoinedByString:@","];--分隔符
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