iOS开发——记录一些好用的方法

前言

记录常用到的一些方法，持续更新。

1、数组

1.1 查找数组中是否含有某个对象

// myArr是自己的数组，object是要找的那个对象
[myArr containsObject:object];

2、字典

2.1 新建key-val

[myDic setValue: forKey:];

2.2 根据key查value

[myDic valueForKey: ];

3、字符串

3.1 字符串按字符拆分为数组

// 以”/“划分
NSArray *stringURLArray = [myString componentsSeparatedByString:@"/"];

4、布局

4.1 frame与bounds的区别详解

frame与bounds的区别详解

5、UI

6、MJRefrsh

- (void)refreshConfig{
     // 刷新方法
     MJRefreshGifHeader *header = [MJRefreshGifHeader headerWithRefreshingTarget:self refreshingAction:@selector(loadNewDataUp)];
     MJRefreshAutoGifFooter *footer = [MJRefreshAutoGifFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadNewDataDown)];
    
     // 设置文字
     [header setTitle:@"下拉刷新" forState:MJRefreshStateIdle];
     [header setTitle:@"松手即可刷新" forState:MJRefreshStatePulling];
     [header setTitle:@"加载中" forState:MJRefreshStateRefreshing];
    
//     [footer setTitle:@"上滑加载更多" forState:MJRefreshStateIdle];
     [footer setTitle:@"松手即可加载" forState:MJRefreshStatePulling];
     [footer setTitle:@"加载中" forState:MJRefreshStateRefreshing];
    
     // 设置字体
     header.stateLabel.font = [UIFont systemFontOfSize:15];
     header.lastUpdatedTimeLabel.font = [UIFont systemFontOfSize:14];
    
    footer.stateLabel.text = @"上滑加载更多";
    footer.stateLabel.font = [UIFont systemFontOfSize:15];

     // 设置颜色
     header.stateLabel.textColor = [UIColor redColor];
     header.lastUpdatedTimeLabel.textColor = [UIColor blueColor];
     // 设置普通状态的动画图片
     [header setImages:[self getRefreshingImageArrayWithStartIndex:1 endIndex:4] forState:MJRefreshStateIdle];
     // 设置即将刷新状态的动画图片（一松开就会刷新的状态）
     [header setImages:[self getRefreshingImageArrayWithStartIndex:5 endIndex:10] forState:MJRefreshStatePulling];
     // 设置正在刷新状态的动画图片
     [header setImages:[self getRefreshingImageArrayWithStartIndex:10 endIndex:26] forState:MJRefreshStateRefreshing];
     
     // 隐藏时间
//     header.lastUpdatedTimeLabel.hidden = YES;
     // 隐藏状态
//     header.stateLabel.hidden = YES;
     
     self.tableView.mj_header = header;
     self.tableView.mj_footer = footer;
}
// 下拉刷新
- (void)loadNewDataUp{
    [self.adViewArray removeAllObjects];
    [self.adsArray removeAllObjects];
    [self pressToLoadAd];
    NSLog(@"下拉刷新");
}

// 上拉刷新
- (void)loadNewDataDown{
    [self pressToLoadAd];
    NSLog(@"上拉加载");
}

// 停止刷新
- (void)endRefresh{
    [self.tableView.mj_footer endRefreshing];
    [self.tableView.mj_header endRefreshing];
}
// gif相关
- (NSArray *)getRefreshingImageArrayWithStartIndex:(NSInteger)startIndex endIndex:(NSInteger)endIndex{
    
    NSMutableArray *result = [NSMutableArray array];
    for (NSUInteger i = startIndex; i <= endIndex; i++) {
        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"chewImage.bundle/[e-mail]", (unsigned long)i]];
        if (image) {
            NSLog(@"加载图片chewImage.bundle/%lu", (unsigned long)i);
            [result addObject:image];
        }
    }
    return result;
    
}

本文地址：https://blog.csdn.net/qq_42009978/article/details/107600330