QBImagePicker用法详解

https://blog.csdn.net/zyk5219/article/details/50865407

QBImagePicker用法详解

2016年03月12日 14:29:58 阅读数：7075 标签： QBImagePicker UIImagePickerControl iOS获取本地图像图片  更多

个人分类： iOS第三方库使用

 

1、简要说明

• QBImagePicker用于获取iOS本地图像，QBImagePickerController扩展了UIImagePickerController类用于支持图像的多选操作。

QBImagePicker下载地址

2、集成方式

一、通过Cocoapods

• 将 pod "QBImagePickerController" 添加到Podfile文件中，然后在终端执行命令pod install
• 在要使用的类中引入头文件

 

#import <QBImagePickerController/QBImagePickerController.h>

 

• 遵守协议QBImagePickerControllerDelegate

 

@interface ViewController()<QBImagePickerControllerDelegate>

 

• 创建QBImagePickerController的实例并设置代理

 

1.  
   QBImagePickerController *imagePickerController =[QBImagePickerController new];
2.  
   imagePickerController.delegate = self;

 

二、手动

• 拖拽 QBImagePicker文件夹到你的项目
• 在要使用的类中引入头文件

 

#import "QBImagePickerController.h"

 

• 遵守协议QBImagePickerControllerDelegate

 

@interface ViewController()<QBImagePickerControllerDelegate>

 

• 创建QBImagePickerController的实例并设置代理

 

1.  
   QBImagePickerController *imagePickerController =[QBImagePickerController new];
2.  
   imagePickerController.delegate = self;

 

3、主要用法及功能

QBImagePicker用于获取iOS本地图像，并支持获取多个图片或视频。

 

1.  
   QBImagePickerController *imagePickerController = [QBImagePickerController new];
2.  
   imagePickerController.delegate = self;
3.  
   imagePickerController.allowsMultipleSelection = YES;
4.  
   [self presentViewController:imagePickerController animated:YES completion:nil];

 

1.获取到图像

 

1.  
   - (void)qb_imagePickerController:(QBImagePickerController *)imagePickerController didFinishPickingAssets:(NSArray *)assets {
2.  
   for (PHAsset *asset in assets) {
3.  
   // Do something with the asset
4.  
   }
5.  
   [self dismissViewControllerAnimated:YES completion:nil];
6.  
   }

 

2.取消获取图像

 

1.  
   - (void)qb_imagePickerControllerDidCancel:(QBImagePickerController *)imagePickerController {
2.  
   //do something
3.  
    [self dismissViewControllerAnimated:YES completion:nil];
4.  
   }

 

3.更改选择图像时获取到通知

 

1.  
   - (void)qb_imagePickerController:(QBImagePickerController *)imagePickerController didDeselectAsset:(PHAsset *)asset{
2.  
   NSLog(@"取消选中");
3.  
   }
4.  
   - (void)qb_imagePickerController:(QBImagePickerController *)imagePickerController didSelectAsset:(PHAsset *)asset{
5.  
   NSLog(@"选中");
6.  
   }
7.  
   - (BOOL)qb_imagePickerController:(QBImagePickerController *)imagePickerController shouldSelectAsset:(PHAsset *)asset{
8.  
   return YES;
9.  
   }

 

4.设置选择图像数量

 

1.  
   imagePickerController.allowsMultipleSelection = YES;//允许多选（默认是NO，不允许多选）
2.  
   imagePickerController.minimumNumberOfSelection = 3;//设置选择图像数量下限
3.  
   imagePickerController.maximumNumberOfSelection = 6;//设置选择图像数量上限

 

5.指定要显示的相册

 

1.  
   imagePickerController.assetCollectionSubtypes = @[
2.  
   @(PHAssetCollectionSubtypeSmartAlbumUserLibrary), //相机胶卷
3.  
   @(PHAssetCollectionSubtypeAlbumMyPhotoStream), //我的照片流
4.  
   @(PHAssetCollectionSubtypeSmartAlbumPanoramas), //全景图
5.  
   @(PHAssetCollectionSubtypeSmartAlbumVideos), //视频
6.  
   @(PHAssetCollectionSubtypeSmartAlbumBursts) //连拍模式拍摄的照片
7.  
   ];

 

6.设置媒体类型

 

1.  
   imagePickerController.mediaType = QBImagePickerMediaTypeAny;//图片和视频
2.  
   imagePickerController.mediaType = QBImagePickerMediaTypeImage;//图片
3.  
   imagePickerController.mediaType = QBImagePickerMediaTypeVideo;//视频

 

7.设置每行显示的图像数量

 

1.  
   imagePickerController.numberOfColumnsInPortrait = 4;//竖屏模式下一行显示4张图像
2.  
   imagePickerController.numberOfColumnsInLandscape = 7;//横屏模式下一行显示7张图像

 

8.显示提示信息

 

1.  
   imagePickerController.prompt = @"请选择图像!";//在界面上方显示文字“请选择图像!”
2.  
   imagePickerController.showsNumberOfSelectedAssets = NO;//在界面下方显示已经选择图像的数量

 

 

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