在Objective中用NSPredicate实现自定义数据类的滤波器阵列

Question

我有一个名为DataClass的自定义数据类，这里有详细信息。

@interface DataClass : NSObject

@property (assign,nonatomic)NSInteger invoiceID;
@property (assign,nonatomic)NSInteger anInvoiceID;
@property (strong,nonatomic)NSString *customerName;
@property (strong,nonatomic)NSString *departmentName;
@property (strong,nonatomic)NSString *typeNumberOfInvoice;
@property (strong,nonatomic)NSString *invoiceDate;
@property (strong,nonatomic)NSString *stockNumber;
@property (strong,nonatomic)NSString *vehicleDetail;
@property (strong,nonatomic)NSString *rONumber;
@property (assign,nonatomic)NSInteger amount;
@property (strong,nonatomic)NSString *color;
@property (strong,nonatomic)NSString *year;
@property (strong,nonatomic)NSString *location;
@property (strong,nonatomic)NSString *carVinNumber;
@property (strong,nonatomic)NSString *dealership;
@property (strong,nonatomic)NSString *technician;
@property (strong,nonatomic)NSData *imageData;
@property (strong, nonatomic)NSMutableArray *arrayOfLocations;

在我的ViewController类中，我有一个文本字段，在该字段中，我接受输入并根据文本显示显示。我有一个NSMutableArray，名叫arrayOfData和filteredDataArray。arrayOfData包含上述DataClass的对象，但当我尝试使用以下代码执行此操作时，就会出错。

“所有或任何运算符的左手侧必须是NSArray或NSSet。”

     NSPredicate *aToZPredicate =
    [NSPredicate predicateWithFormat:@"ANY invoiceID CONTAINS[cd] %@", searchText];
    filteredDataArray = [arrayOfData filteredArrayUsingPredicate:aToZPredicate];
    [_tableView reloadData];

Answer 1

如果您正在与Integer进行比较，请不要使用包含。与等号比较

NSPredicate *aToZPredicate =
        [NSPredicate predicateWithFormat:@"invoiceID == %d", [searchText intValue]];
        filteredDataArray = [arrayOfData filteredArrayUsingPredicate:aToZPredicate];
        [_tableView reloadData];

Answer 2

尝尝这个

NSPredicate *aToZPredicate =
[NSPredicate predicateWithFormat:@"CAST(SELF.invoiceID, 'NSString') contains[cd] %@", searchText];
filteredDataArray = [arrayOfData filteredArrayUsingPredicate:aToZPredicate];
[_tableView reloadData];