iphone - Filter Array con diccionarios usando NSPredicate

nsarray

Question

Hay una matriz con cada elemento que es un NSDictionary .

NSMutableArray *mutArr = [NSMutableArray array];
for (Person *person in persons) {
NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:person.name, @"name", person.email, @"email", nil];
[mutArr addObject:dict];
}
self.arr = [[NSArray alloc] initWithArray:mutArr];

Cómo archivar el arr con nombre o correo electrónico contiene la cadena @"filter string" usando el método filterArrayUsingPredicate: .

¡Gracias por adelantado!

Answer 1

Mira esto :

var customerNameDict = ["firstName":"karthi","LastName":"alagu","MiddleName":"prabhu"];
var clientNameDict = ["firstName":"Selva","LastName":"kumar","MiddleName":"m"];
var employeeNameDict = ["firstName":"karthi","LastName":"prabhu","MiddleName":"kp"];
var attributeValue = "karthi";
var arrNames:Array = [customerNameDict,clientNameDict,employeeNameDict];
var namePredicate = NSPredicate(format: "firstName like %@",attributeValue);
let filteredArray = arrNames.filter { namePredicate.evaluateWithObject($0) };
println("names = ,/(filteredArray)");

Answer 2

Por favor vea el siguiente ejemplo:

 NSArray *array = [NSArray arrayWithObject:[NSMutableDictionary dictionaryWithObject:@"filter string" forKey:@"email"]]; // you can also do same for Name key...
NSArray *filteredarray = [array filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(email == %@)", @"filter string"]];