将NSArray转换为NSMutableArray

Question

如上.知道会有所帮助.谢谢!

Answer 1

这有两个选择:

- (NSMutableArray *)createMutableArray1:(NSArray *)array
{
    return [NSMutableArray arrayWithArray:array];
}

- (NSMutableArray *)createMutableArray2:(NSArray *)array
{
    return [[array mutableCopy] autorelease];
}

Answer 2

使用-mutableCopy并确保平衡保留计数.

NSMutableArray *mutableArray = [[immutableArray mutableCopy] autorelease];

Answer 3

试试这个吧

NSMutableArray *array = [[NSMutableArray alloc]initWithArray:your_array_name];