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IOS 开发之操作图库自定义控制器


2017/2/20  编辑:admin 来源:本站整理

IOS 开发之操作图库自定义控制器

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 <Foundation/Foundation.h> @class ImageAndPhotos; @protocol PhotoButtonDelegate <NSObject>  -(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 <Foundation/Foundation.h> #import "PhotoButtonDelegate.h" @class UIBaseScrollView; @interface ImageAndPhotos : NSObject <UIAlertViewDelegate,UIActionSheetDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate>  @property (nonatomic, strong) UIViewController *controller; @property (nonatomic, strong) UIImage *img; @property (nonatomic, strong) UIButton *btn; @property (nonatomic, weak) id<PhotoButtonDelegate> 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<PhotoButtonDelegate>  @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:

IOS 开发之操作图库自定义控制器

 

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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