IOS如何实现操作图库自定义控制器
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步骤如下:
新建此类的代理属性必须遵守的协议:
新建PhotoButtonDelegate.h如下:
// // PhotoButtonDelegate.h // 作业整理 // // Created by apple on 15/9/16. // Copyright (c) 2015年 LiuXun. All rights reserved. // #import@class ImageAndPhotos; @protocol PhotoButtonDelegate -(void) setPhotoButton:(ImageAndPhotos *) imgAndP; @end
新建此类如下:
编辑ImageAndPhotos.h如下:
// // ImageAndPhotos.h // 作业整理 // // Created by apple on 15/9/16. // Copyright (c) 2015年 LiuXun. All rights reserved. // #import#import "PhotoButtonDelegate.h" @class UIBaseScrollView; @interface ImageAndPhotos : NSObject @property (nonatomic, strong) UIViewController *controller; @property (nonatomic, strong) UIImage *img; @property (nonatomic, strong) UIButton *btn; @property (nonatomic, weak) id delegate; -(id)initWithControler:(UIViewController *) crtler AndButton:(UIButton *) button; @end
编辑ImageAndPhotos.m如下:
// // ImageAndPhotos.m // 作业整理 // // Created by apple on 15/9/16. // Copyright (c) 2015年 LiuXun. All rights reserved. // #import "ImageAndPhotos.h" @implementation ImageAndPhotos -(id)initWithControler:(UIViewController *) crtler AndButton:(UIButton *) button { if (self = [super init]) { self.controller = crtler; self.btn = button; [self CameraEvent]; } return self; } -(void)CameraEvent { [self.btn addTarget:self action:@selector(showActionSheet) forControlEvents:UIControlEventTouchUpInside]; } -(void) showActionSheet { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"我的相册", nil nil]; [actionSheet showInView:self.controller.view]; } // 实现UIActionSheetDelegate协议中监听按钮的方法 -(void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == 0) { [self addCamera]; } else if(buttonIndex == 1) { [self addPhoto]; } } -(void)addCamera { // 判断是否可以打开一个相机 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { // 创建一个调出拍照的控制器 UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.allowsEditing = YES; // 摄像头 NSLog(@"++++addCamera++++"); picker.sourceType = UIImagePickerControllerSourceTypeCamera; [self.controller presentViewController:picker animated:YES completion:^{ }]; } else { [self showAlertView]; } } -(void) addPhoto { // 相册可以用模拟器打开,但是相机不可以用模拟器打开 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.allowsEditing = YES; // 是否可以编辑 // 打开相册选择相片 picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //表示管理图库 [self.controller presentViewController:picker animated:YES completion:nil]; } else { [self showAlertView]; } } -(void)showAlertView { UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"提示" message:@"你没有摄像头" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil nil]; [alert show]; } // 代理协议中的方法 // 拍摄完成后,其实是选中图片后的方法要执行的方法,如果是照相的话则选中拍照后的相片 -(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { // 得到图片 self.img = [info objectForKey:UIImagePickerControllerEditedImage]; // 图片存入图库 if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) { UIImageWriteToSavedPhotosAlbum(self.img, nil, nil, nil); // 如果是相机 } [self.controller dismissViewControllerAnimated:YES completion:^{ if ([self.delegate respondsToSelector:@selector(setPhotoButton:)]) { [self.delegate setPhotoButton:self]; } }]; } //选中图片点击cancel按钮后执行的方法 -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { [self.controller dismissViewControllerAnimated:YES completion:nil]; } @end
此类新建完成,在自定义控件中的应用如下:(此自定义控件是一个上传图片的scrollVIew)
新建自定义控件类编辑UIBaseScrollView.h如下
// // UIBaseScrollView.h // 作业整理 // // Created by apple on 15/9/16. // Copyright (c) 2015年 LiuXun. All rights reserved. // #import "UIBaseVIew.h" #import "ImageAndPhotos.h" @interface UIBaseScrollView : UIBaseVIew@property (nonatomic, strong) NSMutableArray *arrayImgs; @property (nonatomic, strong) UIScrollView *scroll; @property (nonatomic, strong) ImageAndPhotos *imgChange; @property (nonatomic, strong) UIButton *btnImg; @property (nonatomic, strong) UIImageView *imgV; -(id)initWithFrame:(CGRect)frame CurrenContr:(UIViewController *) crtl; @end 编辑定义控件的.m文件如下: [objc] view plain copy // // UIBaseScrollView.m // 作业整理 // // Created by apple on 15/9/16. // Copyright (c) 2015年 LiuXun. All rights reserved. // #import "UIBaseScrollView.h" @implementation UIBaseScrollView -(id)initWithFrame:(CGRect)frame CurrenContr:(UIViewController *) crtl { if (self = [super initWithFrame:frame]) { self.scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)]; self.btnImg = [[UIButton alloc] initWithFrame:CGRectMake(10, 10, frame.size.height-20, frame.size.height-20)]; [self.btnImg setImage:[UIImage imageNamed:@"tizhong_photo_increase_bj"] forState:UIControlStateNormal]; self.imgChange = [[ImageAndPhotos alloc] initWithControler:crtl AndButton:self.btnImg]; self.scroll.showsHorizontalScrollIndicator = YES; self.imgChange.delegate = self; [self.scroll addSubview:self.btnImg]; [self addSubview:self.scroll]; } return self; } -(void)setPhotoButton:(ImageAndPhotos *)imgAndP { NSLog(@"%@&&&&&&&&&",self.imgChange.img); if (imgAndP.img) { self.imgV =[[UIImageView alloc] initWithFrame: self.btnImg.frame ]; self.imgV.image = imgAndP.img; self.imgV.backgroundColor = [UIColor yellowColor]; [self.scroll addSubview:self.imgV]; self.btnImg.frame = CGRectMake(CGRectGetMaxX(self.imgV.frame)+10, self.imgV.frame.origin.y, self.imgV.frame.size.width, self.imgV.frame.size.height); self.scroll.contentSize = CGSizeMake(CGRectGetMaxX(imgAndP.btn.frame)+10, 0); if (CGRectGetMaxX(self.btnImg.frame)>self.scroll.frame.size.width) { self.scroll.contentOffset = CGPointMake(self.btnImg.frame.origin.x-10, 0); } } } @end
在控制器中使用此自定义控件如下:
UIBaseScrollView *det5 = [[UIBaseScrollView alloc] initWithFrame:CGRectMake (20, CGRectGetMaxY(det4.frame)+20, WIDTH-40, 80) CurrenContr:self];
运行结果如下:
在控制器中直接使用此相册类也与此类似,不同之处就是让所在控制器遵守类属性的协议,然后实现即可,在此不再奥数。
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