YYXC_Student/jiaPei/ChangeSchool/Controller/ChangeSchoolDetailFileViewController.m

//
//  ChangeSchoolDetailFileViewController.m
//  jiaPei
//
//  Created by 张嵘 on 2019/7/2.
//  Copyright © 2019 JCZ. All rights reserved.
//

#import "ChangeSchoolDetailFileViewController.h"
#import "ChangeSchoolDetailViewController.h"
#import "ChangeSchoolDetailPictureCell.h"
#import "GQImageViewer.h"
#import <MBProgressHUD.h>

@interface ChangeSchoolDetailFileViewController () <UICollectionViewDelegate, UICollectionViewDataSource>
@end

@implementation ChangeSchoolDetailFileViewController

#pragma mark - Life Cycle
- (void)viewDidLoad {
    [super viewDidLoad];
    [self.collectionView registerNib:[UINib nibWithNibName:@"ChangeSchoolDetailPictureCell" bundle:nil] forCellWithReuseIdentifier:@"ChangeSchoolDetailPictureCell"];
}

#pragma mark - UICollectionViewDelegate, UICollectionViewDataSource
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
	return 1;
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
	return self.filesItems.count;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
	return CGSizeMake((kScreenWidth/3.0) - 32, ((kScreenWidth/3.0) - 32) * (3.0/2.0));
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
	ChangeSchoolDetailPictureCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"ChangeSchoolDetailPictureCell" forIndexPath:indexPath];
	FILESItem *fileItem = self.filesItems[indexPath.row];
	NSURL *url = [NSURL URLWithString:fileItem.urlPath];
	[cell.imageView sd_setImageWithURL:url placeholderImage:[UIImage imageNamed:@""]];
	return cell;
}

/// collectinView section header 在高版本存在系统BUG，需要设置zPosition = 0.0
- (void)collectionView:(UICollectionView *)collectionView willDisplaySupplementaryView:(UICollectionReusableView *)view forElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath {
	view.layer.zPosition = 0.0;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
	NSMutableArray *imageArray = [NSMutableArray array];
	[[[self.filesItems.rac_sequence.signal deliverOnMainThread] distinctUntilChanged] subscribeNext:^(FILESItem * _Nullable file) {
		[imageArray addObject:file.urlPath];
	} completed:^{
		//基本调用
		if (!imageArray || imageArray.count == 0) {
			[LoadingView showMsg:@"图片数据出错"];
			return;
		}
		[[GQImageViewer sharedInstance] setImageArray:imageArray textArray:nil];//这是数据源
		[GQImageViewer sharedInstance].selectIndex = indexPath.row;//设置选中的索引
		[GQImageViewer sharedInstance].achieveSelectIndex = ^(NSInteger selectIndex){//获取当前选中的图片索引
			NSLog(@"%ld",selectIndex);
		};
		[GQImageViewer sharedInstance].configure = ^(GQImageViewrConfigure *configure) {//设置配置信息
			[configure configureWithImageViewBgColor:[UIColor blackColor]
									 textViewBgColor:nil
										   textColor:[UIColor whiteColor]
											textFont:[UIFont systemFontOfSize:12]
									   maxTextHeight:100
									  textEdgeInsets:UIEdgeInsetsMake(5, 5, 5, 5)
										   scaleType:GQImageViewerScaleTypeEqualWidth];
		};
		[[GQImageViewer sharedInstance] showInView:self.navigationController.view animation:YES];//显示GQImageViewer到指定view上
	}];
}

@end