SwiftCommon之Camera相机

概述

IOS中调用设备的相机拍照、录制视频，使用UIImagePickerController类，根据不同的SourceType来区分是拍照还是录视频。

SCCamera

1import Foundation
2import UIKit
3import MobileCoreServices
4
5public enum SCImagePickerMediaType{
6    case Movie
7    case Image
8    case All
9}
10
11public class SCImagePicker{
12    
13    
14    /**
15    当前设备的相机是否可用
16    
17    :returns: 可用返回true，否则返回false
18    */
19    public class func isCameraAvailable()->Bool{
20        return UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)
21    }
22    
23    /**
24    当前设备的照片库是否可用
25    
26    :returns: 可用返回true，否则返回false
27    */
28    public class func isPhotoLibraryAvailable()->Bool{
29        return UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary)
30    }
31    
32    /**
33    根据SourceType获取当前设备支持的MediaType
34    
35    :param: sourceType 需要使用的SourceType
36    
37    :returns: 返回一个数组，可能包含了kUTTypeImage、kUTTypeMovie，更多请查看系统类库源码
38    */
39    public class func availableMediaTypes(sourceType:UIImagePickerControllerSourceType)->[AnyObject]{
40        return UIImagePickerController.availableMediaTypesForSourceType(sourceType)!
41    }
42
43    
44    /**
45    视频或者图片拍摄后，根据拿到的info获取，当前操作是Movie还是Image
46    
47    :param: info didFinishPickingMediaWithInfo事件回调参数中的info参数
48    
49    :returns: 返回SCCameraMediaType类型，可能是Movie或者Image
50    */
51    public class func getMediaTypeFromResultInfo(info: [NSObject : AnyObject])->SCImagePickerMediaType{
52        let mediaType = info["UIImagePickerControllerMediaType"] as! String
53        if mediaType == kUTTypeMovie as String{
54            return SCImagePickerMediaType.Movie
55        }
56        else{
57            return SCImagePickerMediaType.Image
58        }
59    }
60    
61    /**
62    保存录制的视频到相机胶卷中
63    
64    :param: info didFinishPickingMediaWithInfo事件回调参数中的info参数
65    */
66    public class func saveMovie(info: [NSObject : AnyObject]){
67        let mediaUrl: NSURL = info[UIImagePickerControllerMediaURL] as! NSURL
68        let videoPath       = mediaUrl.path
69        if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(videoPath){
70            UISaveVideoAtPathToSavedPhotosAlbum(videoPath, nil, nil, nil)
71        }
72    }
73    
74    /**
75    保存录制的视频到Document文件夹中
76    
77    :param: info     didFinishPickingMediaWithInfo事件回调参数中的info参数
78    :param: fileName 保存文件的文件名称
79    */
80    public class func saveMovie(info: [NSObject : AnyObject],fileName:String){
81        let filePath       = SCPath.getDocumentPath().stringByAppendingString("/\(fileName)")
82        //获取系统保存的视频的URL
83        let mediaUrl:NSURL = info[UIImagePickerControllerMediaURL] as! NSURL
84        //转换为NSData
85        let mediaData      = NSData(contentsOfURL: mediaUrl)
86        mediaData!.writeToFile(filePath, atomically: true)
87    }
88    
89    /**
90    保存拍摄的照片到相机胶卷中
91    
92    :param: info didFinishPickingMediaWithInfo事件回调参数中的info参数
93    */
94    public class func saveImage(info: [NSObject : AnyObject]){
95        let image:UIImage = getSavedImage(info)
96        UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
97    }
98    
99    /**
100    保存拍摄的图片到Document文件夹中
101    
102    :param: info     didFinishPickingMediaWithInfo事件回调参数中的info参数
103    :param: fileName 保存的文件名
104    */
105    public class func saveImage(info: [NSObject : AnyObject],fileName:String){
106        let filePath      = SCPath.getDocumentPath().stringByAppendingString("/\(fileName)")
107        let image:UIImage = getSavedImage(info)
108        let data:NSData!
109        if fileName.lowercaseString.hasSuffix(".jpg"){
110            //第二个参数表示jpg图像压缩质量，1为不压缩，最好效果。这个参数范围0.0-1.0
111            data = SCImage.getNSDataFromJPG(image, quality: 1.0)
112        }else{
113            data = SCImage.getNSDataFromPNG(image)
114        }
115        data.writeToFile(filePath, atomically: true)
116    }
117    
118    /**
119    获取拍摄的UIImage对象
120    
121    :param: info didFinishPickingMediaWithInfo事件回调参数中的info参数
122    
123    :returns: 返回拍摄的照片的UIImage对象
124    */
125    public class func getSavedImage(info: [NSObject : AnyObject])->UIImage{
126        let originalImage:UIImage?
127        let editedImage:UIImage?
128        let savedImage:UIImage?
129        
130        editedImage   = info["UIImagePickerControllerEditedImage"] as? UIImage
131        originalImage = info["UIImagePickerControllerOriginalImage"] as? UIImage
132        
133        if (editedImage != nil){
134            savedImage = editedImage
135        }else{
136            savedImage = originalImage
137        }
138        return savedImage!
139    }
140    
141}

Git地址

http://devonios.com/go/swiftcommon

tips：

本文由wp2blog导入，原文链接：http://devonios.com/sccamera.html