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How to save and download text file in Flutter web application

By : Aaron Bell
Date : September 15 2020, 05:00 AM
help you fix your problem This method is based on manipulations with an HTML document. Some additional packages should be imported:
code :
import 'dart:convert';
import 'dart:html' as html; // or package:universal_html/prefer_universal/html.dart
final text = 'this is the text file';

// prepare
final bytes = utf8.encode(text);
final blob = html.Blob([bytes]);
final url = html.Url.createObjectUrlFromBlob(blob);
final anchor = html.document.createElement('a') as html.AnchorElement
  ..href = url
  ..style.display = 'none'
  ..download = 'some_name.txt';

// download

// cleanup

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How to download file and save in local iphone application?

By : user3648844
Date : March 29 2020, 07:55 AM
I hope this helps . although u can delete file from yr resource directory and save new one but the my way is to perform file operation mostly on app diretories like document directory or cache directory.
first u will to save yr xml file from app resource to cache directory then access file from there.And u can also remove file from resource directory ,its no longer needed. any new file available in internet then first remove old one from cache and add new one to cache directory.
code :
    //get your cachedirectory path
NSArray *imagepaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *cachdirectory = [[NSString alloc] initWithString:[imagepaths objectAtIndex:0]];

//first save your file from resource directory to app's cache  directory
NSString * path = [[NSBundle mainBundle] pathForResource:@"fileinresource" ofType:@"xml"];
NSData *filedata = [NSData dataWithContentsOfFile:path];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *savename = [cachdirectory stringByAppendingPathComponent:@"mynewfile.xml"];
[fileManager createFileAtPath:savename contents:filedata attributes:nil];       

//remove file from resource directory
[fileManager removeItemAtPath:path error:nil];

//new file from internet is avilable then do following:first remove old file from cache
[fileManager removeItemAtPath:cachdirectory error:nil];

//save new file from internet
NSData *newfiledata=[NSData dataWithContentsOfURL:[NSURL URLWithString:myxmlurlstringpath]];
[fileManager createFileAtPath:savename contents:newfiledata attributes:nil];        

How to download xml file and save in local iphone application

By : LaDerrius Williams
Date : March 29 2020, 07:55 AM
Any of those help What you can do is:-
Suppose you have parsed your xml and stored data in array say 'dataArray'
code :
NSUserDefaults *pref1=[NSUserDefaults standardUserDefaults];
[pref1 setObject:dataArray forKey:@"parseData"];    
[pref1 synchronize];
NSUserDefaults *pref1=[NSUserDefaults standardUserDefaults];
NSArray *dataArray=[pref1 objectForKey:@"parseData"];

How to save a text file in external storage in ios using flutter?

By : Rodoxx
Date : March 29 2020, 07:55 AM
To fix the issue you can do You can save the file in the NSDocumentsDirectory (getApplicationDocumentsDirectory()) and then make it available to the user.
From: https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html

Download file and encrypted file that can only view in my flutter application

By : John Sarmas
Date : March 29 2020, 07:55 AM
With these it helps Flutter or any other framework manages stack for screen navigation,
So in flutter if you navigate to another screen, the old screen goes to the stack in memory, it does not dispose.

Download File with android download manager and save in application folder

By : M.Stephen
Date : March 29 2020, 07:55 AM
it should still fix some issue I'm not exactly sure of what you want to do with "private folder"... but this is how I download files with a progress callback:
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