根據(jù)實(shí)體類(lèi)的屬性進(jìn)行排序，這個(gè)屬性排序還可以增加幾個(gè)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(gè)排序規(guī)則來(lái)判斷
我們提供的服務(wù)有：成都網(wǎng)站設(shè)計(jì)、成都網(wǎng)站建設(shè)、微信公眾號(hào)開(kāi)發(fā)、網(wǎng)站優(yōu)化、網(wǎng)站認(rèn)證、山城ssl等。為上千家企事業(yè)單位解決了網(wǎng)站和推廣的問(wèn)題。提供周到的售前咨詢和貼心的售后服務(wù)，是有科學(xué)管理、有技術(shù)的山城網(wǎng)站制作公司
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"data" ascending:YES];//其中，price為數(shù)組中的對(duì)象的屬性，這個(gè)針對(duì)數(shù)組中存放對(duì)象比較更簡(jiǎn)潔方便
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:&sortDescriptor count:1];
[self.dataArray sortUsingDescriptors:sortDescriptors];
過(guò)濾不會(huì)對(duì)原來(lái)的數(shù)據(jù)產(chǎn)生影響，而是生成符合過(guò)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(gè)例子可以運(yùn)行看看
#import
@interface TestBean : NSObject
@property(nonatomic,assign)int id;
@property(nonatomic,strong)NSString* data;
@end
#import
@interface ViewController : UIViewController
@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(duì)象的屬性，這個(gè)針對(duì)數(shù)組中存放對(duì)象比較更簡(jiǎn)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(duì)NSMutableArray進(jìn)行排序和過(guò)濾的實(shí)例就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持創(chuàng)新互聯(lián)。
本文標(biāo)題：iOS對(duì)NSMutableArray進(jìn)行排序和過(guò)濾的實(shí)例
網(wǎng)頁(yè)鏈接：
http://weahome.cn/article/jijogh.html
重慶分公司
重慶分公司
