分享功能目前几乎已成为很多app的标配了，其中微信，微博等app的图片分享界面设计的很棒，不仅能够展示缩略图，还可以预览删除。最近我在做一款社交分享app，其中就要实现图文分享功能，于是试着自行实现仿微信分享风格的功能。
核心思想：
主要是使用UICollectionView来动态加载分享图片内容，配合预览页面，实现动态添加和预览删除图片效果。
实现效果：
核心代码如下：
分享界面：
实现文件
预览界面：
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//// YSYPreviewViewController.h// NineShare//// Created by ZhangChangwei on 15/2/1.// Copyright (c) 2015年 9Studio. All rights reserved.//#import <UIKit/UIKit.h>#import "PostTableViewController.h"@interface YSYPreviewViewController : UIViewController<UIActionSheetDelegate>
+(void) setPreviewImage:(UIImage *)image;
@end |
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//// YSYPreviewViewController.m// NineShare//// Created by ZhangChangwei on 15/2/1.// Copyright (c) 2015年 9Studio. All rights reserved.//#import "YSYPreviewViewController.h"static UIImage *currentImage;
@interface YSYPreviewViewController ()
- (IBAction)deleteSelectedImage:(id)sender;
@property (weak, nonatomic) IBOutlet UIImageView *previewImageView;
@end@implementation YSYPreviewViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
_previewImageView.image=currentImage;
}- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}/*#pragma mark - Navigation// In a storyboard-based application, you will often want to do a little preparation before navigation- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}*/- (IBAction)deleteSelectedImage:(id)sender {
UIActionSheet *action=[[UIActionSheet alloc] initWithTitle:@"要删除这张照片吗？" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"删除" otherButtonTitles: nil];
[action showInView:self.view];
}-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
if(buttonIndex==actionSheet.cancelButtonIndex)
{
return;
}
else
{
[PostTableViewController deleteSelectedImageWithImage:currentImage];
[self.navigationController popToRootViewControllerAnimated:YES];
}
}+(void)setPreviewImage:(UIImage *)image{
currentImage=image;
}@end |
到这里就可以实现完整的带预览删除的图文分享功能了^_^