Unity3d本地上传并且裁剪图片-----iOS平台

注：引擎版本unity4.x

最近项目需求,需要做用户头像,要求:

1. 可以从本地上传

2. 本地裁剪

3. 压缩控制大小

4. 在三个平台实现PC/Android/IOS

弄了好几天总是搞完了总结一下

在网上找了一段时间，有人推荐了一个插件，网盘地址忘记存了，直接上代码吧

OpenPhotoController.h :

@interface OpenPhotoController : NSObject<UIApplicationDelegate,UIImagePickerControllerDelegate, UIActionSheetDelegate,UINavigationControllerDelegate>

{

UIView* _rootView;

UIViewController* _rootController;

@private

id _popoverViewController;

}

@property (nonatomic, retain) id popoverViewController;

@end

OpenPhotoController.mm:

#import "OpenPhotoController.h"

@implementation OpenPhotoController
@synthesize popoverViewController = _popoverViewController;

-(void)showActionSheet
{
UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil
delegate:self
cancelButtonTitle:NSLocalizedString( @"取消", nil )
destructiveButtonTitle:nil
otherButtonTitles:NSLocalizedString( @"拍照", nil ), NSLocalizedString( @"相册", nil ), nil];

if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad )
[sheet showFromRect:CGRectMake( 0, 0, 128, 128 ) inView:UnityGetGLViewController().view animated:YES];
else
[sheet showInView:UnityGetGLViewController().view];

//[sheet release];

}
- (void)actionSheet:(UIActionSheet*)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if( buttonIndex == 0 )
{
[self showPicker:UIImagePickerControllerSourceTypeCamera];
}
else if( buttonIndex == 1 )
{
[self showPicker:UIImagePickerControllerSourceTypePhotoLibrary];
}
else // Cancelled
{
//UnityPause( false );
//UnitySendMessage( "EtceteraManager", "imagePickerDidCancel", "" );
}
}

- (void)showPicker:(UIImagePickerControllerSourceType)type
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = type;
picker.allowsEditing = YES;

// We need to display this in a popover on iPad
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad )
{
Class popoverClass = NSClassFromString( @"UIPopoverController" );
if( !popoverClass )
return;

_popoverViewController = [[popoverClass alloc] initWithContentViewController:picker];
[_popoverViewController setDelegate:self];
//picker.modalInPopover = YES;

// Display the popover
[_popoverViewController presentPopoverFromRect:CGRectMake( 0, 0, 128, 128 )
inView:UnityGetGLViewController().view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
else
{
// wrap and show the modal
UIViewController *vc = UnityGetGLViewController();
[vc presentModalViewController:picker animated:YES];
}
}
- (void)popoverControllerDidDismissPopover:(UIPopoverController*)popoverController
{
self.popoverViewController = nil;
//UnityPause( false );

//UnitySendMessage( "EtceteraManager", "imagePickerDidCancel", "" );
}

- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info
{
// Grab the image and write it to disk
UIImage *image;
UIImage *image2;
//	if( _pickerAllowsEditing )
image = [info objectForKey:UIImagePickerControllerEditedImage];
//        else
//            image = [info objectForKey:UIImagePickerControllerOriginalImage];

//NSLog( @"picker got image with orientation: %i", image.imageOrientation );
UIGraphicsBeginImageContext(CGSizeMake(128,128));
[image drawInRect:CGRectMake(0, 0, 128, 128)];
image2 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

// 得到了image，然后用你的函数传回u3d
NSData *imgData;
if(UIImagePNGRepresentation(image2) == nil)
{
imgData= UIImageJPEGRepresentation(image2, 0.5);
}
else
{
imgData= UIImageJPEGRepresentation(image2, 0.5);
}

NSString *_encodeImageStr = [imgData base64Encoding];

UnitySendMessage( "UnityIOSBridge", "PhotoCallBack", _encodeImageStr.UTF8String);
// Dimiss the pickerController
[self dismissWrappedController];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController*)picker
{
// dismiss the wrapper, unpause and notifiy Unity what happened
[self dismissWrappedController];
//UnityPause( false );
//UnitySendMessage( "EtceteraManager", "imagePickerDidCancel", "" );
}

- (void)dismissWrappedController
{
//UnityPause( false );

UIViewController *vc = UnityGetGLViewController();

// No view controller? Get out of here.
if( !vc )
return;

// dismiss the view controller
[vc dismissModalViewControllerAnimated:YES];

// remove the wrapper view controller
[self performSelector:@selector(removeAndReleaseViewControllerWrapper) withObject:nil afterDelay:1.0];

//UnitySendMessage( "EtceteraManager", "dismissingViewController", "" );
}

- (void)removeAndReleaseViewControllerWrapper
{
// iPad might have a popover
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad && _popoverViewController )
{
[_popoverViewController dismissPopoverAnimated:YES];
self.popoverViewController = nil;
}
}
@end

extern "C"
{
void openPhoto()//相册
{
//UnityPause( true );
OpenPhotoController * app = [[OpenPhotoController alloc] init];
// No need to give a choice for devices with no camera
if( ![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] )
{
[app showPicker:UIImagePickerControllerSourceTypeSavedPhotosAlbum];
return;
}
[app showActionSheet];

}

}

unity中调用方法

直接把这俩文件放在Plugins的iOS目录下，或者打包出Xcode工程后再导入这俩文件也可以，推荐第一种，做版本控制的时候比较方便

[DllImport("__Internal")]

private static extern void openPhoto();

public void OpenPhoto(string vName)

{

#if UNITY_IPHONE

openPhoto();

#endif

}

注：

imgData= UIImageJPEGRepresentation(image2, 0.5);是压缩文件 0.5是压缩质量

上传本地图片部分搞定！