Unless you need detailed control of the download process, then consider using DownloadManager 3 because it already handles most of the items listed above. But also consider that your needs may change. For example, DownloadManager does no response caching.
It will blindly download the same big file multiple times. There's no easy way to fix it after the fact. So the initial effort of learning the basic, standard tools can be a good investment. This class was deprecated in API level ProgressDialog is a modal dialog, which prevents the user from interacting with the app.
Instead of using this class, you should use a progress indicator like ProgressBar, which can be embedded in your app's UI. Alternatively, you can use a notification to inform the user of the task's progress. For more details Link. Don't forget to add permissions to your manifest file if you're gonna be downloading stuff from the internet! Yes the code above will work. But if you are updating your progressbar in onProgressUpdate of Asynctask and you press back button or finish your activity AsyncTask looses its track with your UI.
And when you go back to your activity, even if download is running in background you will see no update on progressbar. So on OnResume try to run a thread like runOnUIThread with a timer task that updates ur progressbar with values updating from the AsyncTask running background.
I'd recommend you to use my Project Netroid , It's based on Volley. I have added some features to it such as multi-events callback, file download management. This could be of some help. I have modified AsyncTask class to handle creation of progressDialog at the same context. I think following code will be more reusable.
I found this blog post very helpful, Its using loopJ to download file, it has only one Simple function, will be helpful to some new android guys. While I was starting to learn android development, I had learnt that ProgressDialog is the way to go. There is the setProgress method of ProgressDialog which can be invoked to update the progress level as the file gets downloaded. The best I have seen in many apps is that they customize this progress dialog's attributes to give a better look and feel to the progress dialog than the stock version.
Any animation with in the progress dialog attracts users and they don't feel like being kept waiting for long. My personal advice is to use Progress Dialog and build up before execution , or initiate at OnPreExecute , publish progress often if you use horizontal style of progress bar of the progress dialog. The remaining part is to optimize the algorithm of doInBackground.
Use Android Query library, very cool indeed. You can change it to use ProgressDialog as you see in other examples, this one will show progress view from your layout and hide it after completion. I am adding another answer for other solution I am using now because Android Query is so big and unmaintained to stay healthy. You can observer the progress of the download manager using LiveData and coroutines, see the gist below. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 11 years, 5 months ago. Active 7 months ago. Viewed k times. Tom Leese Tom Leese I hope below link may be help you For quick fix refer this answer — Richa. Add a comment. Active Oldest Votes. Reply to mohammad. Reply to Hanh Jay. Reply to Shivansh. Was working fine.. Please help : ProtocolException: Unexpected status line: Sebastian Rank. Anggrayudi H. Sunil Singh Chaudhary. Alok Verma. Hi, how to display progress bar in notifications while downloading a file.
Nadim Matoussi. Reply to neeko. Just change the extension to. Hi, Your codes are awesome and it is working properly. Thank you so much!
Reply to jacob taylor. Elizabeth Turner. Muhammad Abuchaker. Reply to basanta kumar. Shujhal Singh. Reply to Ravi Tamada. Resume can be in pdf form or word form. Tanvi Android Developer. Reply to rpit Patel. Hello, Did you get any solution for this? I am getting the same issue. Thank you. Reply to Tanvi Android Developer. The above codes downloads the file and sets the object URL - basically the user has to click twice to download a file.
You can also create the link dynamically, and invoke a click on it so that the user has to click once to download the file. Updated on January 3, Published on February 6, Demo Download Starting Download.. The ability to work with channels boosts performance. The downloaded contents will be transferred to a file on the local system via the corresponding file channel.
After defining the file channel we will use the transferFrom method to copy the contents read from the readChannel object to the file destination using the writeChannel object. The transferFrom and transferTo methods are much more efficient than working with streams using a buffer. The transfer methods enable us to directly copy the contents of the file system cache to the file on the system.
Thus direct channeling restricts the number of context switches required and enhances the overall code performance.
Now, in the following sections, we will be looking at ways to download files from a URL using third-party libraries instead of core Java functionality components. Now you may be thinking why would we use this when Java has its own set of libraries to handle IO operations. However, Apache Commons IO overcomes the problem of code rewriting and helps avoid writing boilerplate code.
In order to start using the Apache Commons IO library, you will need to download the jar files from the official website. When you are done downloading the jar files, you need to add them to use them.
If you are using an Integrated Development Environment IDE such as Eclipse , you will need to add the files to the build path of your project. There is only a single line of code required to download a file, which looks like:. The connection and read timeouts convey the permissible time for which either the connection may stay idle or reading from the URL may stop.
We will use the copy inputStream, fileOS method to download a file into the local system. Check out our hands-on, practical guide to learning Git, with best-practices, industry-accepted standards, and included cheat sheet.
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