It makes sense to have one simple to use class that can do this efficiently and inform our app when the task is complete. Being able to download data is powerful way of enriching our apps as we can get files from the internet which our app can then use.
If the user happens to remove the file, we can re-download it again. Normally there are several protocols for communications across devices. And certainly download a file is just a form or communicating between atleast two devices. One device supplying a file while another receiving it. Where with regards to threads. Well the downloads will definitely take place in the background thread. We want to download videos using the DownloadManager class in android.
We want to give them appropriate names and store them in external storage. First we have been passed the video url as a parameter. Maybe you could use endsWith if you like instead of contains. In this complete example we want to see how to download a file from the internet using the downloadManager class.
Then we can open the donwload by clicking the notification in the system bar or from internally in our app. Moreover we can delete the file, view all downloads etc. MainActivity as you can imagine is our launcher activity. This is where we write all our code.
But first we start by making several imports. These include:. As a System service, the DownloadManager is not instantiated directly. Instead we will initialize it using the getSystemService method and cast the resultant object into the DownloadManager class.
Inside the DownloadManager class is an inner class called the Request class. We conveniently do this via the builder patter. Then set the title, descrription, destination and notification visibility. Enqueueing a download means adding it to the download queue of the download manager. Then the queue will be processed automatically the system.
You enqueue a download using the enqueue method. Well you can remove a downloaded file from the download manager using the remove method of the DownloadManager class. You pass the download id. That makes it a good option for people who use torrents legally, of course.
It also supports five simultaneous downloads, the ability to speed up download speeds, and more. It also blocks third party trackers and includes a built-in browser.
Advanced Download Manager is one of the most popular download managers for Android. It has a clean UI, plenty of functionality, and support for all kinds of neat things.
Some of the features include simultaneous downloads, support for SD cards, speed management, and support for very large files. You also get a widget along some additional, more power-user friendly functionality. Checketry is kind of a diamond in the rough pick.
The app lets you monitor downloads for things like Steam games, various types of files, and even torrents on your PC from your phone. It also features a clean UI along with support for Steam, Battle. It takes a moment to set up, but it worked just fine in our testing. The app is also free with ads. Loader Droid is one of the better, albeit older, Android download managers.
The UI is a bit old fashioned, but it delivers the information you need. The app also features plenty of little things like automatically resuming downloads when you connect to data. Some other features include link replacement in case your link times out and you can define the connections allowed on a per-download basis. Thus, you can download via Wi-Fi for one file or 4G for another.
However, people seem to still use this in and still seem to like it.
0コメント