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#在蓝懿学习iOS的日子#day22

时间:2015-11-19 22:13:15      阅读:229      评论:0      收藏:0      [点我收藏+]

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从相册获取图片进行编辑

 

1、搭建界面,添加按钮进行关联

2、从点击按钮跳转到相册的界面

3、选择将要跳转下一页面

4、已经完成选择图片

 

@property (nonatomic, strong)UIScrollView *sv;

@property (nonatomic, strong)NSMutableArray *seletedIVs;

@end

 

@implementation ViewController

- (IBAction)clicked:(id)sender {

    

     self.seletedIVs = [NSMutableArray array];

    

    UIImagePickerController *ipc = [[UIImagePickerController alloc]init];

    ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    ipc.delegate = self;

    //是否允许编辑

//    ipc.allowsEditing = YES;

    [self presentViewController:ipc animated:YES completion:nil];

    

    

    

}

- (void)viewDidLoad {

    [super viewDidLoad];

    

   

    

}

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    

    NSLog(@"%@",UIImagePickerControllerOriginalImage);

    NSLog(@"%@",@"UIImagePickerControllerOriginalImage");

    

    UIImage *image = info[UIImagePickerControllerOriginalImage];

//    通过数组计数 让图片的x轴和数组的数量建立关系

    UIImageView *iv = [[UIImageView alloc]initWithFrame:CGRectMake(self.seletedIVs.count*80, 0, 80, 80)];

    iv.image = image;

    [self.sv addSubview:iv];

    //打开交互

    iv.userInteractionEnabled = YES;

//    往图片中添加删除按钮

    UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(60, 0, 20, 20)];

    [btn setTitle:@"X" forState:UIControlStateNormal];

    [btn addTarget:self action:@selector(deleteAction:) forControlEvents:UIControlEventTouchUpInside];

    [iv addSubview:btn];

    

    

    [self.seletedIVs addObject:iv];

    

    [self.sv setContentSize:CGSizeMake(self.seletedIVs.count*80, 0)];

    

//    [self dismissViewControllerAnimated:YES completion:nil];

    

}

 

-(void)deleteAction:(UIButton *)btn{

    //拿到按钮所在的图片

    UIImageView *iv = (UIImageView *)btn.superview;

    //从数组中删除

    [self.seletedIVs removeObject:iv];

    // 从界面中删除

    [iv removeFromSuperview];

    

    for (int i=0; i<self.seletedIVs.count; i++) {

        UIImageView *iv = self.seletedIVs[i];

        [UIView animateWithDuration:.5 animations:^{

            iv.frame = CGRectMake(i*80, 0, 80, 80);

        }];

        

    }

    

    

    

    

    

}

 

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{

    

    if (navigationController.viewControllers.count==2) {

        UIView *v = [[UIView alloc]initWithFrame:CGRectMake(0, 567, 375, 100)];

        v.backgroundColor = [UIColor redColor];

        [viewController.view addSubview:v];

        

        self.sv = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 20, 375, 80)];

        self.sv.backgroundColor = [UIColor blueColor];

        [v addSubview:self.sv];

        

        //添加返回按钮

        UIButton *doneBtn = [[UIButton alloc]initWithFrame:CGRectMake(295, 0, 80, 20)];

        [doneBtn setTitle:@"Done" forState:UIControlStateNormal];

        [doneBtn addTarget:self action:@selector(finishAction:) forControlEvents:UIControlEventTouchUpInside];

        [v addSubview:doneBtn];

    }

    

   

    

    

    

}

 

-(void)finishAction:(UIButton*)btn{

    

    [self dismissViewControllerAnimated:YES completion:nil];

}

#在蓝懿学习iOS的日子#day22

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原文地址:http://www.cnblogs.com/odileye/p/4979148.html

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