通过NSString过滤字典数组 [英] Filter array of dictionaries by NSString

问题描述

在实现搜索功能时，我需要过滤字典数组。我正在使用自动完整的文本字段方法搜索栏并将其存储到字符串中。我能够解析数组，但面对json下面

while implementing search functionality I need to filter array of dictionaries. I am using auto complete textfield method for search bar and am storing it into string. I can able to parse the array,But facing with below json

[{"CertProfID":"4","Name":"Dodge","Location":"loc4","City":"city4","State":"state4","Zip":"zip5","Website":"http:\/\/cnn.com","Phone":"phone4","Email":"email4"},
{"CertProfID":"5","Name":"cat","Location":"loc5","City":"city5","State":"State5","Zip":"zip5","Website":"web5","Phone":"phone5","Email":"email5"}]

这里我需要过滤字典以使其完成

Here I need to filter the dictionaries to make it finish

我尝试使用下面的代码，但是它的返回数组为空值：（

I tried with below code but its returning array with null values :(

 NSString *substring = [NSString stringWithString:textField.text];
  NSLog(@"substring %@",substring);
  NSMutableArray *arr2Filt= [arraylist valueForKey:@"Name"];
  NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF  contains[c] %@",substring];
  filteredarr = [NSMutableArray arrayWithArray:[arr2Filt filteredArrayUsingPredicate:predicate]];

推荐答案

此代码将解决您的问题，它将返回一个字典数组

This code will solve your problem it will return an array of dictionaries

NSString *substring = [NSString stringWithString:textField.text];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"Name contains[c] %@",searchString];
NSArray *filteredArry=[[arrayOfDict filteredArrayUsingPredicate:predicate] copy];

arrayOfDict是你原来的词典数组

arrayOfDict is your original array of dictionaries

Swift 3.0版本 :::

var namePredicate = NSPredicate(format: "Name contains[c] %@",searchString);

let filteredArray = arrayOfDict.filter { namePredicate.evaluate(with: $0) };

print("names = ,\(filteredArray)")

希望它会帮助你

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