控制列来进行表情排序

#import "ViewController.h"

@interface ViewController ()
@property UISegmentedControl *segment;
@property NSMutableArray *ary;
@property UIButton *addBtn;
@property UIButton *delectBtn;
@property  NSInteger h;
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //设置segment的数量以及位置
	NSMutableArray *setAry = [NSMutableArray arrayWithObjects:@"两列",@"三列",@"四列",@"五列", nil];
    _segment = [[UISegmentedControl alloc] initWithItems:setAry];
    _segment.frame = CGRectMake(20, 60, 280, 30);
    _segment.tintColor = [UIColor redColor];
    [self.view addSubview:_segment];
    
    //为数组导入表情图标
    _ary = [[NSMutableArray alloc] init];
    for (int i = 0 ; i < 9; i++) {
        UIButton *faceBtn = [[UIButton alloc] init];
        faceBtn.frame = CGRectMake(i*20, 568, 30, 30);
        [faceBtn setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"face%i.png",i+1]] forState:UIControlStateNormal];
        [faceBtn setTag:i];
        [faceBtn addTarget:self action:@selector(delect:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:faceBtn];
        [_ary addObject:faceBtn];
    }
    
    //数组增加按钮的添加
    UIButton *addButton = [[UIButton alloc] init];
    addButton.frame = CGRectMake(20, 568, 30, 30);
    [addButton setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"add.png"]] forState:UIControlStateNormal];
    [self.view addSubview:addButton];
    [_ary addObject:addButton];
    [_segment addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
    [addButton addTarget:self action:@selector(addShow:) forControlEvents:UIControlEventTouchUpInside];
    
    //调用背景颜色更换的函数
    [NSTimer scheduledTimerWithTimeInterval:9.8 target:self selector:@selector(changeColor) userInfo:nil repeats:YES];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
#pragma mark segment列数的选择
- (IBAction)segmentAction:(UISegmentedControl *)sender
{
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    _h =sender.selectedSegmentIndex+2;
    [self paiXu:_h];
    [UIView areAnimationsEnabled];
}

#pragma mark 增加按钮
- (IBAction)addShow:(UIButton *)sender
{
    
    UIButton *faceBtn = [[UIButton alloc] init];
    faceBtn.frame = CGRectMake(0, 0, 30, 30);
    [faceBtn setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"face%i.png",arc4random()%9+1]] forState:UIControlStateNormal];
    [faceBtn setTag:_ary.count-1];
    [faceBtn addTarget:self action:@selector(delect:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:faceBtn];
    [_ary insertObject:faceBtn atIndex:_ary.count-1];
    [self paiXu:_h];
    
    
}
#pragma mark 删除表情

- (IBAction)delect:(UIButton *)sender
{
    [_ary removeObjectAtIndex:sender.tag];
    [sender removeFromSuperview];
    for (int i = sender.tag; i<_ary.count-1; i++) {
        [_ary[i] setTag:i];
    }
    [self paiXu:_h];
    
}


#pragma mark 排序
- (void)paiXu:(int)h
{
    
    //根据表情坐标XX  YY之间的间隙
    double jianxiXX = (double)(self.view.frame.size.width - _h*30)/(_h+1);
    double jianxiYY = 20;
    
    for (int i=0; i<_ary.count-1; i++) {
        
        UIButton *face = (UIButton*)_ary[i+1];
        CGRect frameF = face.frame;
        
        //x坐标 (和列数有关系)
        int nowLie = i%_h; //列：0.1.2...
        
        frameF.origin.x = (nowLie+1)*jianxiXX+nowLie*30;
        
        //y坐标 (和行数有关系)
        int nowHang = i/_h; //行：0.1.2...
        frameF.origin.y = 100+nowHang*(jianxiYY+30);
        
        face.frame = frameF;
}
    
    //;根据行.列数量判断
//    int k = 100 ;
//    int g = 0 ;
//    int r = 1 ;
//    UIButton *btn ;
//    CGRect fra ;
//    for (int i=0; i<(_ary.count/_h+1); i++)
//    {
//        for (int j=0; j<_h; j++)
//        {
//            if (g==_ary.count)
//                break;
//            btn=(UIButton *)_ary[g];
//            fra=btn.frame;
//            fra.origin.x=320/(_h*2)*r;
//            fra.origin.y=k;
//            btn.frame=fra;
//            g++;
//            r=r+2;
//        }
//        k=k+45;
//        r=1;
//    }
}

#pragma mark 设定时间随机替换背景色
- (void)changeColor
{
    [self.view setBackgroundColor:[[UIColor alloc] initWithRed:(double)(arc4random()%256)/256 green:(double)(arc4random()%256)/256 blue:(double)(arc4random()%256)/256 alpha:0.8]];
}

@end