NSIndexPath递增值

length , getIndexes: initWithIndexes:length: realloc 函数以增大/缩小缓冲区。

别忘了 release 将其索引放入缓冲区之后和之前的旧索引路径 alloc 国王和 init ( WithIndexes:length: )新的,和 free 完成后,缓冲区将被删除。(也别忘了 realloc 为您释放旧的缓冲区,因此您只需要 自由的 最后一个缓冲区。)

NSUInteger newIndexes[] = {0,1};
NSUInteger len = sizeof(newIndexes)/sizeof(NSUInteger); //sorry!
NSIndexPath *baseIndexPath = [NSIndexPath indexPathWithIndexes:newIndexes 
                                                        length:len];
NSUInteger i;
for (i=0; i<10; i++) {
    NSIndexPath *newIndexPath = [baseIndexPath indexPathByAddingIndex:i];
    NSLog(@"newIndexPath = %@", newIndexPath);
}

NSIndexPath *someIndexPath = [NSIndexPath indexPathWithIndexes:newIndexes 
                                                        length:len];
    NSUInteger newIndexes2[[someIndexPath length]];
    [someIndexPath getIndexes:newIndexes2];

    NSUInteger len2 = sizeof(newIndexes2)/sizeof(NSUInteger);
    NSIndexPath *baseIndexPath2 = [NSIndexPath indexPathWithIndexes:newIndexes2 
                                                             length:len2];
    NSUInteger ii;
    NSInteger start = [someIndexPath indexAtPosition:[someIndexPath length] -1];
    for (ii=start; ii<10; ii++) {
        NSIndexPath *newIndexPath2 = [baseIndexPath2 indexPathByAddingIndex:ii];
        NSLog(@"newIndexPath2 = %@", newIndexPath2);
    }

请注意,第一个示例将创建原始路径0.1的子级,而第二个示例将创建同级。随意搭配。