Question

如何拍照后剪裁图片

拍完照后先不保存照片，而是先剪裁后 再保存，是在哪个函数协议里实现的，想知道出发的函数的顺序

Answer 1

看下面的代码，希望对你有帮助：-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ //拍照后获取到的照片数据 [picker dismissModalViewControllerAnimated:YES]; UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage]; //开个新线程，去裁剪照片，满足尺寸要求（新线程的目的是有效降低内存消耗，避免crash） [NSThread detachNewThreadSelector:@selector(useImage:) toTarget:self withObject:image];}- (void)useImage:(UIImage *)image { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; //裁剪指定尺寸的方法 UIImage *sharkenImage = [self imageWithImageSimple:image scaledToSize:CGSizeMake(440, 440)]; //改png格式为jpg格式，以降低容量 NSData* imageData = UIImageJPEGRepresentation(sharkenImage, 0.5); //保存到documents等目录下 [imageData writeToFile:uploadPicPath atomically:YES]; [pool release]; } 查看原帖>>

Answer 2

看下面的代码，希望对你有帮助：-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ //拍照后获取到的照片数据 [picker dismissModalViewControllerAnimated:YES]; UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage]; //开个新线程，去裁剪照片，满足尺寸要求（新线程的目的是有效降低内存消耗，避免crash） [NSThread detachNewThreadSelector:@selector(useImage:) toTarget:self withObject:image];}- (void)useImage:(UIImage *)image { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; //裁剪指定尺寸的方法 UIImage *sharkenImage = [self imageWithImageSimple:image scaledToSize:CGSizeMake(440, 440)]; //改png格式为jpg格式，以降低容量 NSData* imageData = UIImageJPEGRepresentation(sharkenImage, 0.5); //保存到documents等目录下 [imageData writeToFile:uploadPicPath atomically:YES]; [pool release]; }