【iOS开发实用框架】自适应宽度标签显示

竹林风

   导读

【iOS开发实用框架】教程目录    http://www.sufeinet.com/thread-24348-1-1.html

【iOS开发实用框架】实例目录贴    http://www.sufeinet.com/thread-24654-1-1.html

效果：



1.首先新建一个页面SelectCityVC继承于 BaseCollectionViewController


直接上代码：

SelectCityVC.h

[Objective-C] 纯文本查看 复制代码

#import "BaseCollectionViewController.h"

typedef void(^DidSelectCity)(NSString *cityName);

@interface SelectCityVC : BaseCollectionViewController

@property (nonatomic,assign) NSInteger selectCityType;

@property(nonatomic,copy) DidSelectCity  didSelectCity;

@end

SelectCityVC.m

[Objective-C] 纯文本查看 复制代码

#import "SelectCityVC.h"
#import "TitleView.h"
#import "JobFuncLayout.h"
#import "TextCollectionCell.h"

static NSString *TextCollectionHeaderIdentifier = @"TextCollectionHeaderView";

static NSString *TextCollectionCellIdentifier = @"TextCollectionCell";

@interface SelectCityVC ()<UICollectionViewDataSource,UICollectionViewDelegate>{

    NSArray *aryProvince;//所有城市
    
    
    
    UICollectionViewFlowLayout *flowLayout;
    
    
}

@end

@implementation SelectCityVC


-(void)initData{
    
    NSString * path = [[NSBundle mainBundle]pathForResource:@"citys" ofType:@"plist"];
    aryProvince = [NSArray arrayWithContentsOfFile:path];
    
    [self.theCollectionView reloadData];
}




- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    JobFuncLayout *  flowLayout = [[JobFuncLayout alloc]init];
    flowLayout.minimumLineSpacing = 6;
    flowLayout.minimumInteritemSpacing = 6;
    flowLayout.sectionInset = UIEdgeInsetsMake(0, 25, 0, 25);
    self.theCollectionView.collectionViewLayout = flowLayout;
    self.theCollectionView.backgroundColor = kColor(whiteColor);
    
    [self.theCollectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:TextCollectionHeaderIdentifier];
    
    [self.theCollectionView registerClass:[TextCollectionCell class] forCellWithReuseIdentifier:TextCollectionCellIdentifier];
    
    [self initData];
    
}

#pragma mark - UICollectionViewDelegate

#pragma mark - sectionHeader

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
    
    return aryProvince.count;
}

//设置collectionViewSection 的edgeInset
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
    
    UIEdgeInsets edgeInset=UIEdgeInsetsMake(0,25,0,25);
    return edgeInset;
}

// 设置section头视图的参考大小，与tableheaderview类似
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout
referenceSizeForHeaderInSection:(NSInteger)section {
    
    return CGSizeMake(ScreenWidth, 40);
}

//创建头视图
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {
    UICollectionReusableView *vHeader = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:TextCollectionHeaderIdentifier forIndexPath:indexPath];
    TitleView *vTitle = (TitleView *)[vHeader viewWithTag:1001];
    if (!vTitle) {
        vTitle = [[TitleView alloc]initWithFrameHeight:40 LeftMargin:15];
        vTitle.titleLabel.textColor = Color_333;
        vTitle.titleLabel.font = kFont(14);
        vTitle.tag = 1001;
        [vHeader addSubview:vTitle];
    }
    NSDictionary *dic = aryProvince[indexPath.section];
    vTitle.titleLabel.text = dic[@"name"];
    return vHeader;
}

#pragma mark - collectionCell

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    NSDictionary *dic = aryProvince[section];
    NSArray *aryCitys = dic[@"cities"];
    return aryCitys.count;
}

//设置cell的size
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    NSDictionary *dic = aryProvince[indexPath.section];
    NSArray *aryCitys = dic[@"cities"];
    NSString *city = aryCitys[indexPath.row];
    return [TextCollectionCell getCollectionCellSizeByText:city];
}


-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    
    return [self getTextCollectionCellForCollectionView:collectionView AtIndexPath:indexPath];
}

-(TextCollectionCell *)getTextCollectionCellForCollectionView:(UICollectionView *)collectionView AtIndexPath:(NSIndexPath *)indexPath{
    
    TextCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:TextCollectionCellIdentifier forIndexPath:indexPath];
    NSDictionary *dic = aryProvince[indexPath.section];
    NSArray *aryCitys = dic[@"cities"];
    NSString *city = aryCitys[indexPath.row];
    [cell updateCollectionCellByText:city];
    return cell;
}

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
    NSDictionary *dic = aryProvince[indexPath.section];
    NSArray *aryCitys = dic[@"cities"];
    NSString *city = aryCitys[indexPath.row];
    _didSelectCity([NSString stringWithFormat:@"%@%@",dic[@"name"],city]);
    popViewController(self, YES);
        
}

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2018-12-25 17:14 上传

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Amy

强烈支持楼主ing……

liu

强烈支持楼主ing……

站长苏飞

我只是路过打酱油的。

范范

我只是路过打酱油的。

惜

我只是路过打酱油的。