Unity与IOS交互，调用相机相册，兼容ipad
IOS篇
在处理unity和ios的时候，除了对oc不太习惯以外，还有就是iphone和ipad有些方法需要做区别。比如通用的弹窗方法不用，以及ipad上打开相册竟然可以支持显示的相册不是全屏了！好吧，之前一直没有用ipad。具体代码可以从这里下载，测试环境unity2017.4.11、Xcode11。
简单写下流程：
1.unity点击打开->2.提示ios通用弹窗–>3.打开相册或者相机（确认权限）->4.返回image转成base64->5.通知unity。
需要关注的几点
1.把IOSCustomEmoji.h和IOSCustomEmoji. mm 放到unity Asset/Plugins/IOS 下。
2.权限添加：NSPhotoLibraryUsageDescription、NSCameraUsageDescription、NSPhotoLibraryAddUsageDescription（ios11）
3.添加lib库：Photos.framework
动态配置plist相关，可以看这篇博客
以下是ios部分代码
//
// IOSCustomEmoji.h
// Unity-iPhone
//
// Created by akb on 2018/12/19.
//
#ifndef IOSCustomEmoji_h
#define IOSCustomEmoji_h
#import
#endif /* IOSCustomEmoji_h */
@interface IOSCustomEmoji : UIViewController
{
}
-(void) openMenu;
+(void) saveImageToPhotosAlbum : (NSString*) p1;
@end
//
// IOSCustomEmoji.m
// Unity-iPhone
//
// Created by akb on 2018/12/19.
//
#import "IOSCustomEmoji.h"
#import
#import
@implementation IOSCustomEmoji
#if defined (__cplusplus)
extern "C"
{
#endif
//打开菜单
void _openPicture()
{
NSLog(@"_openPicture");
IOSCustomEmoji *app = [[IOSCustomEmoji alloc] init];
UIViewController *viewController = UnityGetGLViewController();
[viewController.view addSubview:app.view];
[app openMenu];
}
//保存图片
void _saveImageToPhotoAlbum(char* addr)
{
NSLog(@"_saveImageToPhotoAlbum");
NSString *value = [NSString stringWithUTF8String:addr];
[IOSCustomEmoji saveImageToPhotosAlbum:value];
}
#if defined (__cplusplus)
}
#endif
-(void)openMenu
{
UIAlertController *actionSheet = [UIAlertController alertControllerWithTitle:@"选择图像" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
// 创建action，这里action1只是方便编写，以后再编程的过程中还是以命名规范为主
UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[self takePhoto];
NSLog(@"打开照相机拍照");
}];
UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"从相册选择" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[self LocalPhoto];
NSLog(@"打开相册");
}];
UIAlertAction *action3 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"cancle");
}];
//把action添加到actionSheet里
[actionSheet addAction:action1];
[actionSheet addAction:action2];
[actionSheet addAction:action3];
NSLog(@"添加完成");
//相当于之前的[actionSheet show];
//ipad 打开窗口方式
if([self getIsIpad])
{
UIPopoverPresentationController * popPresenter = [actionSheet popoverPresentationController];
popPresenter.sourceView = self.view;
popPresenter.sourceRect = self.view.frame;
//popPresenter.permittedArrowDirections = UIPopoverArrowDirectionUnknown;
//隐藏尖头
[actionSheet.popoverPresentationController setPermittedArrowDirections:0];
[self presentViewController:actionSheet animated:YES completion:nil];
}
else
{
[self presentViewController:actionSheet animated:YES completion:nil];
}
}
//开始拍照
-(void)takePhoto
{
NSString *mediaType = AVMediaTypeVideo;//读取媒体类型
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];//读取设备授权状态
if(authStatus == AVAuthorizationStatusRestricted || authStatus == AVAuthorizationStatusDenied){
NSString *errorStr = @"请在iPhone的“设置-隐私-相机”选项中，允许访问你的相机。";
[self showAlertMessage:errorStr];
}
else
{
if ([self isCameraAvailable] &&([self isFrontCameraAvailable] || [self isRearCameraAvailable]))
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
NSLog(@"%@",self);
picker.delegate = self;
//设置拍照后的图片可被编辑
picker.allowsEditing = NO;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:nil];
}else
{
NSLog(@"相机有问题");
}
}
}
//打开本地相册
-(void)LocalPhoto
{
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
if (status == PHAuthorizationStatusRestricted || status == PHAuthorizationStatusDenied)
{
NSString *errorStr = @"请在iPhone的“设置-隐私-相册”选项中，允许访问你的相册。";
[self showAlertMessage:errorStr];
}
else
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.delegate = self;
//设置选择后的图片可被编辑
picker.allowsEditing = NO;
if([self getIsIpad])
{
UIPopoverController *pop=[[UIPopoverController alloc]initWithContentViewController:picker];
[pop presentPopoverFromRect: CGRectMake(0, self.view.bounds.size.height, 0, 0)
inView:self.view
permittedArrowDirections:0
animated:YES];
}
else
{
[self presentViewController:picker animated:YES completion:nil];
}
//[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:picker animated:YES completion:nil];
}
}
// 判断设备是否有摄像头
- (BOOL) isCameraAvailable{
return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
}
// 前面的摄像头是否可用
- (BOOL) isFrontCameraAvailable{
return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront];
}
// 后面的摄像头是否可用
- (BOOL) isRearCameraAvailable{
return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
}
- (void) showAlertMessage:(NSString *) myMessage {
//创建提示框指针
UIAlertController *alertMessage;
//用参数myMessage初始化提示框
alertMessage = [UIAlertController alertControllerWithTitle:@"提示" message:myMessage preferredStyle:UIAlertControllerStyleAlert];
//添加按钮
[alertMessage addAction:[UIAlertAction actionWithTitle:@"以后再说" style:UIAlertActionStyleCancel handler:nil]];
//添加按钮
[alertMessage addAction:[UIAlertAction actionWithTitle:@"立即前往" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
}]];
//display the message on screen 显示在屏幕上
[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:alertMessage animated:YES completion:nil];
}
//当选择一张图片后进入这里
-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSLog(@"当选择一张图片后进入这里");
[picker dismissViewControllerAnimated:YES completion:nil];
NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
//当选择的类型是图片
if ([type isEqualToString:@"public.image"])
{
//先把图片转成NSData
UIImage* image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
if(image == nil)
{
NSLog(@"返回的image==null");
return;
}
//判断图片的b分辨率是否支持
Boolean SizeIsOk = [self CheckOutImageSize:image];
if(!SizeIsOk)
{
NSString * result = @"图片分辨率不支持";
UnitySendMessage( "SDKCallBackObj", "CommonTip", result.UTF8String);
return;
}
//压缩图片
image = [self imageWithImageSimple:image];
NSData *imgData;
if(UIImagePNGRepresentation(image) == nil)
{
imgData= UIImageJPEGRepresentation(image, 1);
}
else
{
imgData= UIImagePNGRepresentation(image);
}
NSString *base64ImageStr = [imgData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSLog(@"base64:%@",base64ImageStr);
UnitySendMessage("SDKCallBackObj", "GetBase64" , [base64ImageStr UTF8String]);
}
else
{
NSLog(@"%@",type);
}
}
// 打开相册后点击“取消”的响应
- (void)imagePickerControllerDidCancel:(UIImagePickerController*)picker
{
NSLog(@" --- imagePickerControllerDidCancel !!");
[picker dismissViewControllerAnimated:YES completion:nil];
}
//压缩图片
- (UIImage*)imageWithImageSimple:(UIImage*)image
{
NSLog(@"压缩图片");
NSLog(@"old h=%f",image.size.height);
NSLog(@"old w=%f",image.size.width);
CGFloat max = fmax(image.size.height, image.size.width);
if(max<=1000)
return image;
else
{
CGFloat value = 1000 / max;
CGSize newSize= CGSizeMake(image.size.width * value, image.size.height * value);
// Create a graphics image context
UIGraphicsBeginImageContext(newSize);
// Tell the old image to draw in this new context, with the desired
// new size
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
// End the context
UIGraphicsEndImageContext();
NSLog(@"new h=%f",newImage.size.height);
NSLog(@"new w=%f",newImage.size.width);
// Return the new image.
return newImage;
}
}
- (Boolean) CheckOutImageSize:(UIImage*)image
{
if (image==nil)
{
NSLog(@"image==nil");
return false;
}
CGFloat w =image.size.width;
CGFloat h =image.size.height;
CGFloat min = fmin(w, h);
if(min<50)
{
NSLog(@"min<50");
return false;
}
CGFloat value = w/h;
if(value < (CGFloat)1/(CGFloat)3 || value>(CGFloat)60/(CGFloat)10)
{
NSLog(@"value < (CGFloat)1/(CGFloat)3 || value>(CGFloat)60/(CGFloat)10");
return false;
}
return true;
}
+ (void) saveImageToPhotosAlbum:(NSString*) readAdr
{
PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
if (status == PHAuthorizationStatusRestricted || status == PHAuthorizationStatusDenied)
{
NSString *errorStr = @"请在iPhone的“设置-隐私-照片”选项中，允许访问你的照片。";
IOSCustomEmoji *app = [[IOSCustomEmoji alloc] init];
UIViewController *viewController = UnityGetGLViewController();
[viewController.view addSubview:app.view];
[app showAlertMessage:errorStr];
}
else
{
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status)
{
if(status == PHAuthorizationStatusAuthorized)
{
NSLog(@"%@",readAdr);
UIImage* image = [UIImage imageWithContentsOfFile:readAdr];
NSLog(@"%@",image);
UIImageWriteToSavedPhotosAlbum(image,
self,
@selector(image:didFinishSavingWithError:contextInfo:),
NULL);
}
}];
}
}
+ (void) image:(UIImage*)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo
{
NSString* result;
if(error)
{
result = @"保存失败";
}
else
{
result = @"保存成功";
}
UnitySendMessage( "SDKCallBackObj", "CommonTip", result.UTF8String);
}
///是不是ipad
- (Boolean)getIsIpad
{
NSString *deviceType = [UIDevice currentDevice].model;
if([deviceType isEqualToString:@"iPhone"]) {
//iPhone
return false;
}
else if([deviceType isEqualToString:@"iPod touch"]) {
//iPod Touch
return false;
}
else if([deviceType isEqualToString:@"iPad"]) {
//iPad
return true;
}
return NO;
}
@end