NSUInteger转换为NSNumber可以通过
NSNumber *aNumber = [NSNumber numberWithInteger:21];
来转换,然后把NSNumber放到数组里
最后要用数据的时候,把NSNumber从数组里取出来,然后通过
NSInteger anInteger = [aNumber integerValue];
拿到那个数字21
数组排序
NSSortDescriptor *sd1 = [NSSortDescriptor sortDescriptorWithKey:@"self" ascending:YES]; NSArray *arr1 = [selectArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:sd1, nil]]; [selectArray removeAllObjects]; selectArray=[NSMutableArray arrayWithArray:arr1];
OC 类型转换
时间: 2024-08-30 16:50:43