【Ios】 Unity for iOS 打开相册、相机及保存图片到相册

偶然在网上看到一位博主写的 unity 和ios 交互个人感觉功能很全

转载地址：http://blog.csdn.net/AnYuanLzh/article/details/50748928

在这里简单，实现一个 Unity for iOS 打开相册、相机及保存图片到相册的功能。主要有两个方面：1、unity 与 ios的交互、ios下的objective-c的相关api。具体的看代码吧，有些注释。

一，首上一张图：

二，上点代码代码

先oc代码，一个头文件，一个实现文件

objective-c: IOSAlbumCameraController.h

//
//  IOSAlbumCameraController.h
//  Unity-iPhone
//
//  Created by AnYuanLzh
//
//@interface IOSAlbumCameraController : UIViewController<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
@end

objective-c: IOSAlbumCameraController.mm

//
//  OpenPhotoController.m
//
//  Created by AnYuanLzh
//#import "IOSAlbumCameraController.h"@implementation IOSAlbumCameraController- (void)showActionSheet
{NSLog(@" --- showActionSheet !!");UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];UIAlertAction *albumAction = [UIAlertAction actionWithTitle:@"相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {NSLog(@"click album action!");[self showPicker:UIImagePickerControllerSourceTypePhotoLibrary allowsEditing:YES];}];UIAlertAction *cameraAction = [UIAlertAction actionWithTitle:@"相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {NSLog(@"click camera action!");[self showPicker:UIImagePickerControllerSourceTypeCamera allowsEditing:YES];}];UIAlertAction *album_cameraAction = [UIAlertAction actionWithTitle:@"相册&相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {NSLog(@"click album&camera action!");//[self showPicker:UIImagePickerControllerSourceTypeCamera];[self showPicker:UIImagePickerControllerSourceTypeSavedPhotosAlbum allowsEditing:YES];}];UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {NSLog(@"click cancel action!");}];[alertController addAction:albumAction];[alertController addAction:cameraAction];[alertController addAction:album_cameraAction];[alertController addAction:cancelAction];UIViewController *vc = UnityGetGLViewController();[vc presentViewController:alertController animated:YES completion:^{NSLog(@"showActionSheet -- completion");}];
}- (void)showPicker:
(UIImagePickerControllerSourceType)typeallowsEditing:(BOOL)flag
{NSLog(@" --- showPicker!!");UIImagePickerController *picker = [[UIImagePickerController alloc] init];picker.delegate = self;picker.sourceType = type;picker.allowsEditing = flag;[self presentViewController:picker animated:YES completion:nil];
}// 打开相册后选择照片时的响应方法
- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info
{NSLog(@" --- imagePickerController didFinishPickingMediaWithInfo!!");// Grab the image and write it to diskUIImage *image;UIImage *image2;image = [info objectForKey:UIImagePickerControllerEditedImage];UIGraphicsBeginImageContext(CGSizeMake(256,256));[image drawInRect:CGRectMake(0, 0, 256, 256)];image2 = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();// 得到了image，然后用你的函数传回u3dNSData *imgData;if(UIImagePNGRepresentation(image2) == nil){NSLog(@" --- actionSheet slse!! 11 ");imgData= UIImageJPEGRepresentation(image, .6);}else{NSLog(@" --- actionSheet slse!! 22 ");imgData= UIImagePNGRepresentation(image2);}NSString *_encodeImageStr = [imgData base64Encoding];UnitySendMessage( "UIUpload2(Clone)", "PickImageCallBack_Base64", _encodeImageStr.UTF8String);// 关闭相册[picker dismissViewControllerAnimated:YES completion:nil];
}// 打开相册后点击“取消”的响应
- (void)imagePickerControllerDidCancel:(UIImagePickerController*)picker
{NSLog(@" --- imagePickerControllerDidCancel !!");[self dismissViewControllerAnimated:YES completion:nil];
}//- (void)dismissWrappedController
//{
//    NSLog(@" --- dismissWrappedController !!");
//    UIViewController *vc = UnityGetGLViewController();
//
//    if( !vc )
//      return;
//
//    [self performSelector:@selector(removeAndReleaseViewControllerWrapper) withObject:nil afterDelay:1.0];
//
//}
//- (void)removeAndReleaseViewControllerWrapper
//{
//    NSLog(@" --- removeAndReleaseViewControllerWrapper !!");
//  // iPad might have a popover
//  if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad && _popoverViewController )
//  {
//      [_popoverViewController dismissPopoverAnimated:YES];
//      self.popoverViewController = nil;
//  }
//}//+(void) saveImageToPhotosAlbum:(NSString*) base64
//{
//    NSLog(@"base64: ");
//    NSLog(base64);
//    const char* string = [base64 UTF8String];
//    NSData* imageData = [NSData dataWithBytes:string length:strlen(string)+1];
//    UIImage* image = [UIImage imageWithData:imageData];
//    UIImageWriteToSavedPhotosAlbum(image,
//                                   self,
//                                   @selector(image:didFinishSavingWithError:contextInfo:),
//                                   NULL);
//}
+(void) saveImageToPhotosAlbum:(NSString*) readAdr
{NSLog(@"readAdr: ");NSLog(readAdr);UIImage* image = [UIImage imageWithContentsOfFile:readAdr];UIImageWriteToSavedPhotosAlbum(image,self,@selector(image:didFinishSavingWithError:contextInfo:),NULL);
}+(void) image:(UIImage*)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo
{NSString* result;if(error){result = @"图片保存到相册失败!";}else{result = @"图片保存到相册成功!";}UnitySendMessage( "UIUpload2(Clone)", "SaveImageToPhotosAlbumCallBack", result.UTF8String);
}@end//------------- called by unity -----begin-----------------
#if defined (__cplusplus)
extern "C" {
#endif// 弹出一个菜单项：相册、相机void _showActionSheet(){NSLog(@" -unity call-- _showActionSheet !!");IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showActionSheet];}// 打开相册void _iosOpenPhotoLibrary(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypePhotoLibrary allowsEditing:NO];}else{UnitySendMessage( "UIUpload2(Clone)", "PickImageCallBack_Base64", (@"").UTF8String);}}// 打开相册void _iosOpenPhotoAlbums(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypeSavedPhotosAlbum allowsEditing:NO];}else{_iosOpenPhotoLibrary();}}// 打开相机void _iosOpenCamera(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypeCamera allowsEditing:NO];}else{UnitySendMessage( "UIUpload2(Clone)", "PickImageCallBack_Base64", (@"").UTF8String);}}// 打开相册--可编辑void _iosOpenPhotoLibrary_allowsEditing(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypePhotoLibrary allowsEditing:YES];}else{UnitySendMessage( "UIUpload2(Clone)", "PickImageCallBack_Base64", (@"").UTF8String);}}// 打开相册--可编辑void _iosOpenPhotoAlbums_allowsEditing(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypeSavedPhotosAlbum allowsEditing:YES];}else{_iosOpenPhotoLibrary();}}// 打开相机--可编辑void _iosOpenCamera_allowsEditing(){if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){IOSAlbumCameraController * app = [[IOSAlbumCameraController alloc] init];UIViewController *vc = UnityGetGLViewController();[vc.view addSubview: app.view];[app showPicker:UIImagePickerControllerSourceTypeCamera allowsEditing:YES];}else{UnitySendMessage( "UIUpload2(Clone)", "PickImageCallBack_Base64", (@"").UTF8String);}}// 保存照片到相册//    void _iosSaveImageToPhotosAlbum(char* base64)//    {//        NSString* temp = [NSString stringWithUTF8String:base64];//        [IOSAlbumCameraController saveImageToPhotosAlbum:temp];//    }void _iosSaveImageToPhotosAlbum(char* readAddr){NSString* temp = [NSString stringWithUTF8String:readAddr];[IOSAlbumCameraController saveImageToPhotosAlbum:temp];}#if defined (__cplusplus)
}
#endif
//------------- called by unity -----end-----------------

后然是：对应的在unity端的c#代码文件。

IOSAlbumCamera.cs

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;public class IOSAlbumCamera : MonoBehaviour
{#if UNITY_IPHONE[DllImport ("__Internal")]private static extern void _iosOpenPhotoLibrary();[DllImport ("__Internal")]private static extern void _iosOpenPhotoAlbums();[DllImport ("__Internal")]private static extern void _iosOpenCamera();[DllImport ("__Internal")]private static extern void _iosOpenPhotoLibrary_allowsEditing();    [DllImport ("__Internal")]private static extern void _iosOpenPhotoAlbums_allowsEditing(); [DllImport ("__Internal")]private static extern void _iosOpenCamera_allowsEditing();[DllImport ("__Internal")]private static extern void _iosSaveImageToPhotosAlbum(string readAddr);/// <summary>/// 打开照片/// </summary>/// <param name="allowsEditing"></param>public static void iosOpenPhotoLibrary(bool allowsEditing=false){if (allowsEditing)_iosOpenPhotoLibrary_allowsEditing ();else_iosOpenPhotoLibrary ();}/// <summary>/// 打开相册/// </summary>/// <param name="allowsEditing"></param>public static void iosOpenPhotoAlbums(bool allowsEditing=false){if (allowsEditing)_iosOpenPhotoAlbums_allowsEditing ();else_iosOpenPhotoAlbums ();}/// <summary>/// 打开相机/// </summary>/// <param name="allowsEditing"></param>public static void iosOpenCamera(bool allowsEditing=false){if (allowsEditing)_iosOpenCamera_allowsEditing ();else_iosOpenCamera ();}/// <summary>/// 保存图片到相册/// </summary>/// <param name="readAddr"></param>public static void iosSaveImageToPhotosAlbum(string readAddr){_iosSaveImageToPhotosAlbum (readAddr);}/// <summary>/// 将ios传过的string转成u3d中的texture/// </summary>/// <param name="base64"></param>/// <returns></returns>public static Texture2D Base64StringToTexture2D(string base64){Texture2D tex = new Texture2D (4, 4, TextureFormat.ARGB32, false);try{byte[] bytes = System.Convert.FromBase64String(base64);tex.LoadImage(bytes);}catch(System.Exception ex){Debug.LogError(ex.Message);}return tex;}    private static IOSAlbumCamera _instance;public static IOSAlbumCamera Instance{get{ return _instance; }}public System.Action<string> CallBack_PickImage_With_Base64;public System.Action<string> CallBack_ImageSavedToAlbum;void Awake(){if (_instance != null){DestroyImmediate(this);return;}_instance = this;//      GameObject go = new GameObject ("IOSAlbumCamera");//      _instance = go.AddComponent<IOSAlbumCamera> ();}/// <summary>/// 打开相册相机后的从ios回调到unity的方法/// </summary>/// <param name="base64">Base64.</param>void PickImageCallBack_Base64(string base64){if(CallBack_PickImage_With_Base64!=null){CallBack_PickImage_With_Base64(base64);}}/// <summary>/// 保存图片到相册后，从ios回调到unity的方法/// </summary>/// <param name="msg">Message.</param>void SaveImageToPhotosAlbumCallBack(string msg){Debug.Log (" -- msg: " + msg);if(CallBack_ImageSavedToAlbum!=null){CallBack_ImageSavedToAlbum(msg);}}#endif
}

最后非常感谢这位博主~

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