Filter array in ios checking multiple properties

问题

I have an array of custom objects. The custom object look like this

@interface User : NSObject
@property(nonatomic, strong)NSString *user_Id;
@property(nonatomic, strong)NSString *user_Name;
@property(nonatomic, strong)NSString *user_UserName;
@end

I have to filter the array checking 2 properties.That is if I search a then it should get list of users filtered from array contains a in user_Name or user_Id .How can i achieve this? For a single property i know[user_Name]

NSString *predicateString = @"user_Name MATCHES[c] %@";
NSString *matchString =  [NSString stringWithFormat: @".*%@.*",searchText];
NSPredicate *predicate =[NSPredicate predicateWithFormat:predicateString, matchString];
self.searchResults = [userArray filteredArrayUsingPredicate:predicate];

回答1:

You can join predicate conditions with OR, such as:

NSString *predicateString = @"(user_Name MATCHES[c] %@) OR (user_Id MATCHES[c] %@)";

Alternately, you could filter the array by using indexesOfObjectsPassingTest: with an appropriate test block and then objectsAtIndexes: to get an array of the objects passing the test.

回答2:

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(user_Name== %@) || (user_Id== %@), <name>,  <id>];

回答3:

Try to use this predicate string

NSString *predicateString = @"user_Name MATCHES[c] %@ OR user_Id MATCHES[c] %@";

来源：https://stackoverflow.com/questions/15583195/filter-array-in-ios-checking-multiple-properties

标签

iphone

ios

uisearchbar

nspredicate