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IOS 開發之操作圖庫自定義控制器

2020-07-26 02:55:44
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IOS 開發之操作圖庫自定義控制器

步驟如下:

新建此類的代理屬性必須遵守的協議:

新建PhotoButtonDelegate.h如下:

// // PhotoButtonDelegate.h // 作業整理 // // 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 

新建此類如下:

編輯ImageAndPhotos.h如下:

// // ImageAndPhotos.h // 作業整理 // // 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 

編輯ImageAndPhotos.m如下:

// // ImageAndPhotos.m // 作業整理 // // 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",@"我的相冊", nil nil];   [actionSheet showInView:self.controller.view];  }  // 實現UIActionSheetDelegate協議中監聽按鈕的方法 -(void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {   if (buttonIndex == 0) {     [self addCamera];   }   else if(buttonIndex == 1)   {     [self addPhoto];   }    }  -(void)addCamera {   // 判斷是否可以打開一個相機   if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {     // 創建一個調出拍照的控制器     UIImagePickerController *picker = [[UIImagePickerController alloc] init];     picker.delegate = self;     picker.allowsEditing = YES;     // 攝像頭     NSLog(@"++++addCamera++++");     picker.sourceType = UIImagePickerControllerSourceTypeCamera;     [self.controller presentViewController:picker animated:YES completion:^{        }];   }   else   {     [self showAlertView];   } } -(void) addPhoto {   // 相冊可以用模擬器打開,但是相機不可以用模擬器打開   if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {     UIImagePickerController *picker = [[UIImagePickerController alloc] init];          picker.delegate = self;     picker.allowsEditing = YES; // 是否可以編輯          // 打開相冊選擇相片     picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //表示管理圖庫     [self.controller presentViewController:picker animated:YES completion:nil];        }   else   {     [self showAlertView];   }    }  -(void)showAlertView {   UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"提示" message:@"你沒有攝像頭" delegate:self cancelButtonTitle:@"確定" otherButtonTitles:nil, nil nil];   [alert show]; }  // 代理協議中的方法 // 拍攝完成后,其實是選中圖片后的方法要執行的方法,如果是照相的話則選中拍照后的相片 -(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {   // 得到圖片   self.img = [info objectForKey:UIImagePickerControllerEditedImage];   // 圖片存入圖庫   if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {     UIImageWriteToSavedPhotosAlbum(self.img, nil, nil, nil); // 如果是相機   }      [self.controller dismissViewControllerAnimated:YES completion:^{     if ([self.delegate respondsToSelector:@selector(setPhotoButton:)]) {       [self.delegate setPhotoButton:self];     }   }];    }  //選中圖片點擊cancel按鈕后執行的方法 -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {      [self.controller dismissViewControllerAnimated:YES completion:nil]; }   @end 

此類新建完成,在自定義控件中的應用如下:(此自定義控件是一個上傳圖片的scrollVIew)

新建自定義控件類編輯UIBaseScrollView.h如下

// // UIBaseScrollView.h // 作業整理 // // 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 編輯定義控件的.m文件如下:[objc] view plain copy// // UIBaseScrollView.m // 作業整理 // // 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義控件如下:

UIBaseScrollView *det5 = [[UIBaseScrollView alloc] initWithFrame:CGRectMake(20, CGRectGetMaxY(det4.frame)+20, WIDTH-40, 80) CurrenContr:self]; 

運行結果如下:


在控制器中直接使用此相冊類也與此類似,不同之處就是讓所在控制器遵守類屬性的協議,然后實現即可,在此不再奧數。

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