[英]How to save captured image in to the document directory
I captured image using below code 我使用以下代码捕获了图像
AVCaptureSession *session = [[AVCaptureSession alloc] init];
session.sessionPreset = AVCaptureSessionPresetMedium;
CALayer *viewLayer = self.vImagePreview.layer;
NSLog(@"viewLayer = %@", viewLayer);
AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
captureVideoPreviewLayer.frame = self.vImagePreview.bounds;
[self.vImagePreview.layer addSublayer:captureVideoPreviewLayer];
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if (!input) {
// Handle the error appropriately.
NSLog(@"ERROR: trying to open camera: %@", error);
}
[session addInput:input];
[session startRunning];
_stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys: AVVideoCodecJPEG, AVVideoCodecKey, nil];
[_stillImageOutput setOutputSettings:outputSettings];
[session addOutput:_stillImageOutput];
when i press the button 当我按下按钮时
AVCaptureConnection *videoConnection = nil;
for (AVCaptureConnection *connection in _stillImageOutput.connections)
{
for (AVCaptureInputPort *port in [connection inputPorts])
{
if ([[port mediaType] isEqual:AVMediaTypeVideo] )
{
videoConnection = connection;
break;
}
}
if (videoConnection) { break; }
}
NSLog(@"about to request a capture from: %@", _stillImageOutput);
[_stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler: ^(CMSampleBufferRef imageSampleBuffer, NSError *error)
{
CFDictionaryRef exifAttachments = CMGetAttachment( imageSampleBuffer, kCGImagePropertyExifDictionary, NULL);
if (exifAttachments)
{
// Do something with the attachments.
NSLog(@"attachements: %@", exifAttachments);
}
else
NSLog(@"no attachments");
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer];
UIImage *image = [[UIImage alloc] initWithData:imageData];
self.vImage.image = image;
_vImage.hidden=YES;
UIStoryboard *storybord=[UIStoryboard storyboardWithName:@"Main" bundle:nil];
shareViewController *shareview=[storybord instantiateViewControllerWithIdentifier:@"share"];
[self presentViewController:shareview animated:YES completion:nil];
shareview.shareimageview.image=image;
NSMutableArray *temparray = [NSMutableArray arrayWithObjects:image,nil];
NSMutableArray *newparsetile=[@[@"you"]mutableCopy];
shareview.newtile=newparsetile;
shareview.selectedimgarray=temparray;
[[NSNotificationCenter defaultCenter] postNotificationName:@"Shareimage" object:image];
}];
how to save the output image in to the device document directory,can any body help me out,answer with code is appreciated,since i am new to the ios objective c,the people who want to customize the camera like instagram can use my code it is 100% working 如何将输出图像保存到设备文档目录中,任何机构都可以帮助我,感谢提供代码答复,因为我是ios目标c的新手,所以想要自定义instagram之类的相机的人可以使用我的代码这是100%的工作
NSData *pngData = UIImagePNGRepresentation(image);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directory
NSString *filePath = [documentsPath stringByAppendingPathComponent:[NSString stringWithFormat:@"image_name”]]; //Add the file name
[pngData writeToFile:filePath atomically:YES]; //Write the file
// Saving it to documents direcctory
NSArray *directoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [directoryPaths objectAtIndex:0];
NSString* filePath = [documentDirectory stringByAppendingPathComponent:@"FileName.png"];
NSData *imageData = // Some Image data;
NSURL *url = [NSURL fileURLWithPath:filePath];
if ([imageData writeToURL:url atomically:YES]) {
NSLog(@"Success");
}
else{
NSLog(@"Error");
}
You can use above code to save an image to documents directory. 您可以使用上面的代码将图像保存到文档目录。 Instead of imagedata variable you can pass your variable. 您可以传递变量来代替imagedata变量。
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