I want to download a file in documentsDirectory in folder "tracks". But if I use this code (file download in documentsDirectory). All work fine
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"Chapter.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:false];
NSString *stringURL = #"link";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
And if I use this code(file download in documentsDirectory in folder "tracks") file is not downloaded
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"tracks/Chapter.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:false];
NSString *stringURL = #"link";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
How to download a file in documentsDirectory in folder "tracks"?
The tracks folder probably doesn't exist yet. You need something like:
NSError *error = nil;
NSString *tracksPath = [documentsDirectory stringByAppendingPathComponent:#"tracks];
if (![[NSFileManager defaultManager] fileExistsAtPath:tracksPath]) {
[[NSFileManager defaultManager] createDirectoryAtPath:tracksPath withIntermediateDirectories:NO attributes:nil error:&error];
}
Related
In this code, the audio is downloaded every time when I click on a button. I want to do check audio stored locally. If stored as run it without loading. How can I do this?
- (void) song{
NSString *stringURL = #"https://drive.google.com/uc?export=download&id=0B6zMam2kAK39VHZ1cUZsM3BhQXM";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"music.mp3"];
[urlData writeToFile:filePath atomically:YES];
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"music.mp3"];
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:filePath] error:nil];
}
NSFileManager has the following methods:
- (BOOL)fileExistsAtPath:(NSString *)path;
- (BOOL)fileExistsAtPath:(NSString *)path isDirectory:(nullable BOOL *)isDirectory;
- (BOOL)isReadableFileAtPath:(NSString *)path;
- (BOOL)isWritableFileAtPath:(NSString *)path;
- (BOOL)isExecutableFileAtPath:(NSString *)path;
- (BOOL)isDeletableFileAtPath:(NSString *)path;
So we check like this:
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"music.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:NO];
if (!fileExists) {
// start the download process here then save
[urlData writeToFile:filePath atomically:YES];
}
How can I check if a file is download and save on device? Help me please.
- (void) song{
if (_index1 == 0) {
NSString *stringURL = #"https://drive.google.com/uc?export=download&id=0B0EJbcHq3ZALWUo0a05LMWNzeDg";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"music.mp3"];
[urlData writeToFile:filePath atomically:YES];
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:filePath] error:nil];
}
}
}
If you want to see if the file music.mp3 is in your Documents folder:
NSString *filePath = [documentsDirectory stringByAppendingPathComponent#"music.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath];
This only makes sense if that file is always the same file. If it can be different files then you need to associate the URL you use to download with the file you stored it in.
NSURL *url = [NSURL URLWithString:#"PDFLINK"];
// Get the PDF Data from the url in a NSData Object
NSData *pdfData = [[NSData alloc] initWithContentsOfURL:url];
NSString * name = #"First";
// Store the Data locally as PDF File
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
NSString *newFilePath = [documentsDirectory stringByAppendingPathComponent:#"my.pdf"];
NSError *error;
if ([fileManager createFileAtPath:newFilePath contents:pdfData attributes:nil])
{
NSLog(#"Create Sucess");
[self loadPDF];
}
else
{
NSLog(#"Create error: %#", error);
}
}
-(void)loadPDF
{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
NSArray *resultArray = [fileManager subpathsOfDirectoryAtPath:documentsDirectory error:nil];
if (![resultArray containsObject:arrObj])
{
// do something
}
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:[resultArray objectAtIndex:0]];
// Now create Request for the file that was saved in your documents folder
//NSLog(#"The filePath %#",filePath);
NSURL *url = [NSURL fileURLWithPath:filePath];
NSLog(#"The url %#",url);
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[_webView setUserInteractionEnabled:YES];
[_webView setDelegate:self];
[_webView loadRequest:requestObj];
}
Here is my code.I have more 10 pdf and want to store them locally on device and display next time without download.
It saves the pdf again and i cannot check whether it is downloaded or not ?
Please help me
I am not sure what you mean but, to download a file , you need to use NSData:
NSString *stringURL = #"your file URL";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"filename.extension"];
[urlData writeToFile:filePath atomically:YES];
}
Now the downloaded file exists at filePath and you can get it by using:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"filename with extension"];
NSString *content = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:NULL];
you can try this to check if file exists at file path:
NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString* file = [documentsPath stringByAppendingPathComponent:#"filename"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:file];
if(fileExists){
//dont download, just grab it and display it
}
else{
//download and display it
}
I need to save all of audio and video url's into document directory which comes from the server. i have tried a sample code
NSData *urlData = [NSData dataWithContentsOfURL:[NSURL URLWithString: "http://www.ebookfrenzy.com/ios_book/movie/movie.mp4"]];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *dataPath_ = [documentsDirectory stringByAppendingPathComponent:#"/MyFolder"];
NSString *newStr = [#"test" stringByAppendingString:[NSString stringWithFormat:#".mp4"]];
NSString *FilePath = [NSString stringWithFormat:#"%#/%#",dataPath_,newStr];
[urlData writeToFile:FilePath atomically:YES];
The folder is creating in document directory but the video is not saving into the folder.Can anyone help to sort this out.
You should build the path properly and you should do some basic error checking:
NSData *urlData = [NSData dataWithContentsOfURL:[NSURL URLWithString: #"http://www.ebookfrenzy.com/ios_book/movie/movie.mp4"]];
if (urlData) {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:#"MyFolder"];
// Create folder if needed
[[NSFileManager defaultFileManager] createDirectoryAtPath:dataPath withIntermediateDirectories:YES attributes:nil error:nil];
NSString *filePath = [dataPath stringByAppendingPathComponent:#"test.mp4"];
if ([urlData writeToFile:filePath atomically:YES]) {
// yeah - file written
} else {
// oops - file not written
}
} else {
// oops - couldn't get data
}
II have created multiple directories like this
NSArray *directoryNames = [NSArray arrayWithObjects:#"hats",#"bottoms",#"right",#"left",nil];
however I do not know how to save into a specific directory.I save like this
NSString *filePath = [folderPath stringByAppendingPathComponent:#"IMAGE_NAME_HERE.PNG"];
NSData *imageData = UIImagePNGRepresentation(captureImage.image);
[imageData writeToFile:filePath atomically:YES];
However I do not know how to specify the directory. I only want the user to save into directory hats. How can I do this?
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docsPath = [paths objectAtIndex:0];
NSString *imageCacheDirPath = [docsPath stringByAppendingPathComponent:#"hats"];
NSString *imageCachePath = [imageCacheDirPath stringByAppendingPathComponent:#"IMAGE_NAME_HERE.PNG"];
if (![[NSFileManager defaultManager] fileExistsAtPath: imageCacheDirPath])
[[NSFileManager defaultManager] createDirectoryAtPath:imageCacheDirPath
withIntermediateDirectories:NO
attributes:nil
error:NULL];
[[NSFileManager defaultManager] createFileAtPath:imageCachePath
contents:dataObj
attributes:nil];