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무인 항공기에서 내 응용 프로그램으로 직접 이미지를 다운로드하는 데 문제가 발생했습니다. 이미지를 다운로드 할 때 "시스템이 사용 중입니다. 잠시 후 다시 시도하십시오. (코드 : -1004)"오류 메시지가 나타나며 DJI 포럼 및 기타 질문을 stackoverflow에서 확인하고 찾을 수 없습니다. 이 문제에 대한 해결책.IOS DJI-SDK를 사용하여 무인 항공기에서 이미지를 프로그래밍 방식으로 다운로드하는 방법
나는 이미 this question을 살펴 봤지만 이미 그 대답에서 제안 된 기술을 사용하고 있습니다.
*** Product Connected ***
*** Unable to detect Camera in downloadFilesFromDrone() ***
*** Firmware package version is: Unknown ***
--> Trying to detect Camera again
--> Successfully detected the camera
--> Refreshed file list
State: 0
--> There are files to download
Time created: 2017-09-01 15:17:04
Time created: 2017-09-01 15:17:16
Time created: 2017-09-01 15:17:26
Time created: 2017-09-01 15:17:36
Time created: 2017-09-01 15:19:06
State: 0
Error downloading photo: System is busy, please retry later.(code:-1004)
State: 0
Error downloading photo: System is busy, please retry later.(code:-1004)
State: 0
Error downloading photo: System is busy, please retry later.(code:-1004)
State: 0
Error downloading photo: System is busy, please retry later.(code:-1004)
편집 :
내 무인 항공기와이 함수의 출력을 테스트하고 여기func downloadFilesFromDrone(){
// get current product
guard let drone = DJISDKManager.product() else {
Logger.logError("Product is connected but DJISDKManager.product is nil when attempting to download media")
return
}
// Get camera on drone
guard let camera: DJICamera = drone.camera else {
Logger.logError("Unable to detect Camera in downloadFilesFromDrone()")
// make recursive call until we are able to detect the camera
DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
Logger.logH1("Trying to detect Camera again")
self.downloadFilesFromDrone()
}
return
}
Logger.logH1("Successfully detected the camera")
// check if we can download images with the product
if !camera.isMediaDownloadModeSupported() {
Logger.logError("Product does not support media download mode")
return
}
// switch camera mode to allow for media downloads
camera.setMode(.mediaDownload, withCompletion: {(error) in
if error != nil {
print("\(error!.localizedDescription)")
}
else {
// get the media manager from the drone to gain access to the files
let manager = camera.mediaManager!
manager.refreshFileList(completion: { (error) in
if error != nil {
print("State: \(manager.fileListState.rawValue)")
print("Error refreshing list: \(error!.localizedDescription)")
}
else {
Logger.logH1("Refreshed file list")
print("State: \(manager.fileListState.rawValue)")
guard let files = manager.fileListSnapshot() else {
Logger.logError("No files to download")
return
}
Logger.logH1("There are files to download")
var images: [UIImage] = []
for file in files {
if file.mediaType == .JPEG {
print("Time created: \(file.timeCreated)")
DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
file.fetchData(withOffset: 0, update: DispatchQueue.main, update: {(_ data: Data?, _ isComplete: Bool, _ error: Error?) -> Void in
if error != nil {
print("State: \(manager.fileListState.rawValue)")
print("Error downloading photo: \(error!)")
}
else {
// unwrap downloaded data and create image
if let data = data, let downloadedImage = UIImage(data: data) {
print("Image was downloaded!")
images.append(downloadedImage)
}
}
}) // end of filedata fetch
}
}
} // end of loop
}
}) // end of file-refresh block
}
})// end of camera setMode block
}
그리고 다음은
내가 이미지를 다운로드하기 위해 작성한 기능입니다다음은 무인기에서 이미지를 다운로드하는 데 사용 된 코드입니다. 여기
/**
* This function downloads the N latest images from the drone and passes them to the completionhandler once all images have completed downloading
*/
func downloadImages(files: [DJIMediaFile], howMany: Int, maxErrors: Int, completion: @escaping ([UIImage]) -> Void){
Logger.logH1("Queueing \(howMany) image(s) to be downloaded")
func downloadNextImage(files: [DJIMediaFile], fileCount: Int, index: Int = 0, downloadedFiles: [UIImage] = [], errorCount: Int = 0) {
// stop when we reach the end of the list
if index == fileCount {
completion(downloadedFiles)
return
}
else {
var imageData: Data?
let file = files[index]
file.fetchData(withOffset: 0, update: DispatchQueue.main, update: {(_ data: Data?, _ isComplete: Bool, _ error: Error?) -> Void in
if let error = error {
Logger.logError("\(error)")
if errorCount < maxErrors {
DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
Logger.logH1("Attempting to download: \(file.fileName) again")
downloadNextImage(files: files, fileCount: fileCount, index: index, downloadedFiles: downloadedFiles, errorCount: errorCount + 1)
}
}
else {
Logger.logError("Too many errors downloading the images, try downloading again")
}
}
else {
// if image is done downloading
if isComplete {
// get full image data
if let imageData = imageData, let image = UIImage(data: imageData) {
Logger.logH1("Downloaded: \(file.fileName)")
// now that the image is done downloading, move onto the next image
downloadNextImage(files: files, fileCount: fileCount, index: (index + 1), downloadedFiles: downloadedFiles + [image], errorCount: 0)
}
}
// else, download the file
else {
// If image exists, append the data
if let _ = imageData, let data = data {
imageData?.append(data)
}
// initialize the image data
else {
imageData = data
}
}
}
}) // end of filedata fetch
} // end of else statement
}
// bounds checking
let available = files.count
let n = howMany > available ? available : howMany
// grab the N latest images taken by the drone
let filesToDownload : [DJIMediaFile] = Array (files.suffix(n))
// start the recursive function
downloadNextImage(files: filesToDownload, fileCount: filesToDownload.count)
}
그리고 그것을 호출하는 방법이다 : 당신은 여기에 두 가지 문제가있어
// get current product
guard let drone = DJISDKManager.product() else {
Logger.logError("Product is connected but DJISDKManager.product is nil when attempting to download media")
return
}
// Get camera on drone
guard let camera: DJICamera = drone.camera else {
Logger.logError("Unable to detect Camera in initDownload()")
return
}
Logger.logH1("Successfully detected the camera")
// check if we can download images with the product
if !camera.isMediaDownloadModeSupported() {
Logger.logError("Product does not support media download mode")
return
}
// switch camera mode to allow for media downloads
camera.setMode(.mediaDownload, withCompletion: {(error) in
if error != nil {
print("\(error!.localizedDescription)")
}
else {
// get the media manager from the drone to gain access to the files
let manager = camera.mediaManager!
manager.refreshFileList(completion: { (error) in
if error != nil {
print("State: \(manager.fileListState.rawValue)")
print("Error refreshing list: \(error!.localizedDescription)")
}
else {
Logger.logH1("Refreshed file list")
print("State: \(manager.fileListState.rawValue)")
// get list of files
guard let files = manager.fileListSnapshot() else {
Logger.logError("No files to download")
return
}
Logger.logH1("There are files to download.. Beginning Download")
self.downloadImages(files: files, howMany: waypoints, maxErrors: 4, completion: { images in
Logger.logH1("Finished downloading: \(images.count) image(s)")
// do something with the images here
})
}
}) // end of file-refresh block
}
})// end of camera setMode block
완성을 위해 작업 버전을 업로드 할 수 있습니까? – IanTimmis
@IanTimmis 사용했던 솔루션으로 내 질문을 업데이트했습니다. 그런데 기능이 첫 번째 통화에서 카메라를 감지하지 못할 수도 있습니다. 사용자는 카메라가 감지되기 전에 여러 통화를 시도해야합니다. –