快捷導(dǎo)航

iOS 對NSMutableArray進(jìn)行排序和過濾的實例

更新時間：2018年01月15日 09:17:36 作者：鍵盤舞者113

下面小編就為大家分享一篇iOS 對NSMutableArray進(jìn)行排序和過濾的實例，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧

根據(jù)實體類的屬性進(jìn)行排序，這個屬性排序還可以增加幾個排序規(guī)則，前后的規(guī)則先判斷，如果一樣的則根據(jù)第二個排序規(guī)則來判斷

NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"data" ascending:YES];//其中，price為數(shù)組中的對象的屬性，這個針對數(shù)組中存放對象比較更簡潔方便 
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:&sortDescriptor count:1]; 
[self.dataArray sortUsingDescriptors:sortDescriptors];

過濾不會對原來的數(shù)據(jù)產(chǎn)生影響，而是生成符合過濾條件的NSArray數(shù)據(jù)

NSPredicate *apredicate=[NSPredicate predicateWithFormat:@"id>=%ld AND id<=%ld",3,5]; 
 
NSArray *newArr=[self.dataArray filteredArrayUsingPredicate:apredicate];

下面是個例子可以運行看看

#import <Foundation/Foundation.h> 
 
@interface TestBean : NSObject 
@property(nonatomic,assign)int id; 
@property(nonatomic,strong)NSString* data; 
@end

#import <UIKit/UIKit.h>
@interface ViewController : UIViewController<UITableViewDelegate,UITableViewDataSource>
@property (strong, nonatomic) NSArray
*list;

@end

//
// ViewController.m
// First
//
// Created by shanreal-iOS on 17/10/16.
// Copyright © 2017年 shanreal.LongZhenHao. All rights reserved.
//
#import "ViewController.h"
#import "TestBean.h"
@interface ViewController ()
@property(nonatomic,strong)NSMutableArray* dataArray;
@end
@implementation ViewController
- (void)viewDidLoad {
 [super viewDidLoad];
 // Do any additional setup after loading the view.
 _dataArray = [NSMutableArray array];
 
 TestBean* one = [[TestBean alloc]init];
 one.id = 1;
 one.data = @"one";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 2;
 one.data = @"two";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 22;
 one.data = @"two2";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 3;
 one.data = @"three";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 4;
 one.data = @"four";
 [_dataArray addObject:one];
 
 
 
 one = [[TestBean alloc]init];
 one.id = 44;
 one.data = @"four4";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 5;
 one.data = @"five";
 [_dataArray addObject:one];
 
 one = [[TestBean alloc]init];
 one.id = 6;
 one.data = @"six";
 [_dataArray addObject:one];
 
 [self oneClick];
 [self twoClick];
 
}
-(void)oneClick{
 NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"data" ascending:YES];//其中，price為數(shù)組中的對象的屬性，這個針對數(shù)組中存放對象比較更簡潔方便
 NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:&sortDescriptor count:1];
 [self.dataArray sortUsingDescriptors:sortDescriptors];
 
 [self logArray:self.dataArray];
}
-(void)twoClick{
 NSPredicate *apredicate=[NSPredicate predicateWithFormat:@"id>=%ld AND id<=%ld",3,5];
 
 NSArray *newArr=[self.dataArray filteredArrayUsingPredicate:apredicate];
 [self logArray:newArr];
}
-(void)logArray:(NSArray*)array{
 NSLog(@"---------------------------------");
 for(TestBean* bean in array){
  NSLog(@"%d %@",bean.id,bean.data);
 }
}

@end

以上這篇iOS 對NSMutableArray進(jìn)行排序和過濾的實例就是小編分享給大家的全部內(nèi)容了，希望能給大家一個參考，也希望大家多多支持腳本之家。

您可能感興趣的文章: