iOS Question Huge Download with Progress

Alberto Iglesias · Jul 20, 2015

Hello,

The Http2Utils class not support progress download monitoring?

Do you have another class or native code to do this?

i´m working in a app to download videos from youtube, but I can see the downloaded %

Thanks.

Alberto Iglesias

Pendrush · Jul 20, 2015

Not related to question, just to warn you. Every app that download or convert videos from YouTube is forbidden on app store.

8.6
Apps that include the ability to download music or video content from third party sources (e.g. YouTube, SoundCloud, Vimeo, etc) without explicit authorization from those sources will be rejected

More on link: https://developer.apple.com/app-store/review/guidelines/

Alberto Iglesias · Jul 20, 2015

we know that, this app in a internal one, is not to go to store!

I need progress in any download (files, videos, etc)

Tks

JanPRO · Jul 20, 2015

Hi,

use NSURLConnection.

Here is an little example:

I want to load this 4k image into an ImageView:

B4X:

Sub Download_Complete
Log("File was successfully downloaded")

Dim BM As Bitmap
BM.Initialize(File.DirDocuments,"Mountains.jpg")
ImageView1.Bitmap = BM
End Sub

Sub Download_Error(ErrorMessage As String)
Log(ErrorMessage)
End Sub

Sub Button1_Click
Dim NativeMe As NativeObject = Me
NativeMe.RunMethod("Download:::::",Array("http://data.hdwallpapers.im/nature_mountain_4k.jpg",ProgressView1,Label1,File.DirDocuments,"Mountains.jpg"))
End Sub


#If OBJC

UIProgressView * ProgressBar;

NSURLResponse *DownloadedResponse;
NSMutableData *DownloadedData;
NSString *FilePath;
UILabel *ProgressLabel;

-(void)Download: (NSString *)FileUrl :(UIProgressView *)ProgressBarToSet :(UILabel *)LabelToSet :(NSString *)Directory :(NSString *)FileName
{
   ProgressBar = ProgressBarToSet;
   ProgressBar.progress = 0;

   ProgressLabel = LabelToSet;

   FilePath = [Directory stringByAppendingString: FileName];

   DownloadedData = [[NSMutableData alloc] init];
   NSURL *url = [NSURL URLWithString:FileUrl];
   NSURLRequest *request = [NSURLRequest requestWithURL:url];
   NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
   [DownloadedData appendData:data];
   ProgressBar.progress = ((100.0/DownloadedResponse.expectedContentLength)*DownloadedData.length)/100;

   NSString * LabelText = [[NSString stringWithFormat:@"%0.f", (ProgressBar.progress * 100)] stringByAppendingString:@"%"];
   ProgressLabel.text = LabelText;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
   [DownloadedData writeToFile:FilePath atomically:YES];
   [self.bi raiseEvent:nil event:@"download_complete" params:@[]];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
   [self.bi raiseEvent:nil event:@"download_error:" params:@[error.localizedDescription]];
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
  DownloadedResponse = response;
}

#End If

based on: http://www.devfright.com/ios-data-download-progress-bar-tutorial/

Alberto Iglesias · Jul 21, 2015

Perfect JanPRO, I will try right now!

Super Thanks!

Alberto Iglesias · Jul 22, 2015

JanPro,

This code work like a charm!

THANK YOUUUUUUUUUUUUUUUUUUUUUUU!!!

look:

chjk · Nov 16, 2015

JanPRO said:

Hi,

use NSURLConnection.

Here is an little example:

I want to load this 4k image into an ImageView:

B4X:

Sub Download_Complete
Log("File was successfully downloaded")

Dim BM As Bitmap
BM.Initialize(File.DirDocuments,"Mountains.jpg")
ImageView1.Bitmap = BM
End Sub

Sub Download_Error(ErrorMessage As String)
Log(ErrorMessage)
End Sub

Sub Button1_Click
Dim NativeMe As NativeObject = Me
NativeMe.RunMethod("Download:::::",Array("http://data.hdwallpapers.im/nature_mountain_4k.jpg",ProgressView1,Label1,File.DirDocuments,"Mountains.jpg"))
End Sub


#If OBJC

UIProgressView * ProgressBar;

NSURLResponse *DownloadedResponse;
NSMutableData *DownloadedData;
NSString *FilePath;
UILabel *ProgressLabel;

-(void)Download: (NSString *)FileUrl :(UIProgressView *)ProgressBarToSet :(UILabel *)LabelToSet :(NSString *)Directory :(NSString *)FileName
{
   ProgressBar = ProgressBarToSet;
   ProgressBar.progress = 0;

   ProgressLabel = LabelToSet;

   FilePath = [Directory stringByAppendingString: FileName];

   DownloadedData = [[NSMutableData alloc] init];
   NSURL *url = [NSURL URLWithString:FileUrl];
   NSURLRequest *request = [NSURLRequest requestWithURL:url];
   NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
   [DownloadedData appendData:data];
   ProgressBar.progress = ((100.0/DownloadedResponse.expectedContentLength)*DownloadedData.length)/100;

   NSString * LabelText = [[NSString stringWithFormat:@"%0.f", (ProgressBar.progress * 100)] stringByAppendingString:@"%"];
   ProgressLabel.text = LabelText;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
   [DownloadedData writeToFile:FilePath atomically:YES];
   [self.bi raiseEvent:nil event:@"download_complete" params:@[]];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
   [self.bi raiseEvent:nil event:@"download_error:" params:@[error.localizedDescription]];
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
  DownloadedResponse = response;
}

#End If

based on: http://www.devfright.com/ios-data-download-progress-bar-tutorial/

It's very good! Do you know ftp how to download or upload file show process?

cloner7801 · Jun 17, 2016

JanPRO said:

Hi,

use NSURLConnection.

Here is an little example:

I want to load this 4k image into an ImageView:

B4X:

Sub Download_Complete
Log("File was successfully downloaded")

Dim BM As Bitmap
BM.Initialize(File.DirDocuments,"Mountains.jpg")
ImageView1.Bitmap = BM
End Sub

Sub Download_Error(ErrorMessage As String)
Log(ErrorMessage)
End Sub

Sub Button1_Click
Dim NativeMe As NativeObject = Me
NativeMe.RunMethod("Download:::::",Array("http://data.hdwallpapers.im/nature_mountain_4k.jpg",ProgressView1,Label1,File.DirDocuments,"Mountains.jpg"))
End Sub


#If OBJC

UIProgressView * ProgressBar;

NSURLResponse *DownloadedResponse;
NSMutableData *DownloadedData;
NSString *FilePath;
UILabel *ProgressLabel;

-(void)Download: (NSString *)FileUrl :(UIProgressView *)ProgressBarToSet :(UILabel *)LabelToSet :(NSString *)Directory :(NSString *)FileName
{
   ProgressBar = ProgressBarToSet;
   ProgressBar.progress = 0;

   ProgressLabel = LabelToSet;

   FilePath = [Directory stringByAppendingString: FileName];

   DownloadedData = [[NSMutableData alloc] init];
   NSURL *url = [NSURL URLWithString:FileUrl];
   NSURLRequest *request = [NSURLRequest requestWithURL:url];
   NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
   [DownloadedData appendData:data];
   ProgressBar.progress = ((100.0/DownloadedResponse.expectedContentLength)*DownloadedData.length)/100;

   NSString * LabelText = [[NSString stringWithFormat:@"%0.f", (ProgressBar.progress * 100)] stringByAppendingString:@"%"];
   ProgressLabel.text = LabelText;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
   [DownloadedData writeToFile:FilePath atomically:YES];
   [self.bi raiseEvent:nil event:@"download_complete" params:@[]];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
   [self.bi raiseEvent:nil event:@"download_error:" params:@[error.localizedDescription]];
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
  DownloadedResponse = response;
}

#End If

based on: http://www.devfright.com/ios-data-download-progress-bar-tutorial/

How can we show connection speed ?

schimanski · Sep 18, 2017

Is it possible to use this method with parameters linke Download2?

B4X:

job.Download2("http://www.example.com", _
    Array As String("key1", "value1", "key2", "value2"))

I have to send the access data to the server.

Thanks for help...

JanPRO · Sep 18, 2017

Hi,

as it's a get request, you can put the parameters directly in the link:

http://www.example.com/test.php?key1=value1&key2=value2

Jan

schimanski · Sep 18, 2017

Is perfect! Thank you

ilan · Sep 19, 2017

Alberto Iglesias said:
JanPro,

This code work like a charm!

THANK YOUUUUUUUUUUUUUUUUUUUUUUU!!!

look:

Can u share the code how to download a video from youtube?

Is it possible to rip the audio from it to mp3?

Thsnx

Alberto Iglesias · Apr 1, 2019

Yes, with this piece of code you can fire more than one download at the same time

Alberto Iglesias · Apr 1, 2019

BUt the code is already here:

The sample in the first post is:

B4X:

Dim NativeMe As NativeObject = Me
NativeMe.RunMethod("Download:::::",Array("http://data.hdwallpapers.im/nature_mountain_4k.jpg",ProgressView1,Label1,File.DirDocuments,"Mountains.jpg"))

is just to change for get the .mp4 files

B4X:

NativeMe.RunMethod("Download:::::",Array(strURL,prvDown,lblProgress,File.DirTemp, "videotmp.mp4"))

and to get the mp4 URLS from youtube, you create the libraryiYoutubeParser

iOS Question Huge Download with Progress

Alberto Iglesias

Well-Known Member

Pendrush

Well-Known Member

Alberto Iglesias

Well-Known Member

JanPRO

Well-Known Member

Alberto Iglesias

Well-Known Member

Alberto Iglesias

Well-Known Member

chjk

Member

cloner7801

Active Member

schimanski

Well-Known Member

JanPRO

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schimanski

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ilan

Expert

Alberto Iglesias

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Alberto Iglesias

Well-Known Member

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