The problem is, it's not always clear where the file you just downloaded was saved on your phone or tablet. When Android first launched, finding files was especially cumbersome due to the fact that not every Android device came with a file manager app.
A lot has changed since then. Most Android devices now come with some sort of file manager preinstalled, and for those that don't, there's a better alternative anyway. Left: Files app on a Pixel 3. By far the easiest way to find downloaded files on Android is to look in your app drawer for an app called Files or My Files.
More Button Icon Circle with three vertical dots. It indicates a way to see more nav menu items inside the site menu by triggering the side menu to open and close. Steven John. You can find your downloads on your Android device in your My Files app called File Manager on some phones , which you can find in the device's App Drawer.
Unlike iPhone, app downloads are not stored on the home screen of your Android device, and can be found with an upward swipe on the home screen.
Within My Files or File Manager, you can access your downloads, images, videos, audio files, and various cloud services, such as Google Drive or OneDrive. Visit Business Insider's homepage for more stories. When not writing or spending time with his wife and kids, he can occasionally be found climbing mountains. The setup is pretty much straightforward, refer to the linked project for sample code. Using the DownloadManager is generally not a good idea if you also want to display the image, since you'd need to read and decode the saved file instead of just setting the downloaded Bitmap into an ImageView.
Now the introduction of the great stuff - the libraries. I will start with Volley , a powerful library created by Google and covered by the official documentation. While being a general-purpose networking library not specializing on images, Volley features quite a powerful API for managing images. You will need to implement a Singleton class for managing Volley requests and you are good to go. You might want to replace your ImageView with Volley's NetworkImageView , so the download basically becomes a one-liner:.
If you need more control, this is what it looks like to create an ImageRequest with Volley:. It is worth mentioning that Volley features an excellent error handling mechanism by providing the VolleyError class that helps you to determine the exact cause of an error.
If your app does a lot of networking and managing images isn't its main purpose, then Volley it a perfect fit for you. Square's Picasso is a well-known library which will do all of the image loading stuff for you. Just displaying an image using Picasso is as simple as:. For more control you can implement the Target interface and use it to load your image into - this will provide callbacks similar to the Volley example.
Check the demo project for examples. Picasso also lets you apply transformations to the downloaded image and there are even other libraries around that extend those API. Universal Image Loader is an another very popular library serving the purpose of image management. It uses its own ImageLoader that once initialized has a global instance which can be used to download images in a single line of code:.
The opts argument in this example is a DisplayImageOptions object. Refer to the demo project to learn more. Note : the author has mentioned that he is no longer maintaining the project as of Nov 27th, But since there are many contributors, we can hope that the Universal Image Loader will live on.
Facebook's Fresco is the newest and IMO the most advanced library that takes image management to a new level: from keeping Bitmaps off the java heap prior to Lollipop to supporting animated formats and progressive JPEG streaming.
To learn more about ideas and techniques behind Fresco, refer to this post. The basic usage is quite simple. Note that you'll need to call Fresco.
Initializing Fresco more than once may lead to unpredictable behavior and OOM errors. Fresco uses Drawee s to display images, you can think of them as of ImageView s:. As you can see, a lot of stuff including transformation options gets already defined in XML, so all you need to do to display an image is a one-liner:. Fresco provides an extended customization API, which, under circumstances, can be quite complex and requires the user to read the docs carefully yes, sometimes you need to RTFM.
Note that the following text reflects my personal opinion and should not be taken as a postulate. In case you missed that, the Github link for the demo project. I have just came from solving this problem on and I would like to share the complete code that can download, save to the sdcard and hide the filename and retrieve the images and finally it checks if the image is already there.
The url comes from the database so the filename can be uniquely easily using id. Why do you really need your own code to download it? How about just passing your URI to Download manager? I have a simple solution which is working perfectly.
The code is not mine, I found it on this link. Here are the steps to follow:. It needs a context, better to use the pass in the application context by getApplicationContext. This method can be dumped into your Activity class or other util classes. This private class need to be placed in your Activity class as a subclass.
After the image is downloaded, in the onPostExecute method, it calls the saveImage method defined above to save the image. The AsyncTask for downloading the image is defined, but we need to execute it in order to run that AsyncTask. To do so, write this line in your onCreate method in your Activity class, or in an onClick method of a button or other places you see fit. Never Miss Out Receive updates of our latest tutorials. Sign up for all newsletters. I would like to receive newsletters via email.
We will not share your data and you can unsubscribe at any time. Crystal Crowder Crystal Crowder has spent over 15 years working in the tech industry, first as an IT technician and then as a writer. Comments 1. Facebook Tweet. One comment Coop. Nov 3, at am Reply. Superb article, Crystal! Leave a Comment Cancel reply Yeah! Contact me by phone only. How to Delete Downloads on an Android Phone. Gboard vs.
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