URL; import java. URLConnection; import java. HashSet; import java. The URL is probably not pointing to a file". What about the onPictureTaken callback which gives the picture as byte[], can one get a URL to that picture, straight from the camera? Or is basic old outputStream the only way in Android to save a picture which was taken by a camera without using the built in intent?
That seems strange, because the natural thing to do after onPictureTaken is of course to save it. Is there no particular support for doing that? Tombola Hi! This post is about downloading a picture from the web. But to answer your question as far as I've understood it : the common way of saving a camera picture is getting its path from the Cursor in the onActivityResult method , then creating a Bitmap using that path. BartBurg this question is about downloading and saving an image.
But you're right at some point, since there's a write method, there also should be a read method for the sake of completeness. I will add it in the next update to this post soon.
Can you please provide an example using this BasicImageDownloader? JaydevKalivarapu please check the demo app on GitHub source class containing example — Droidman. Show 2 more comments. JPEG, 90, out ; out. Venkat Kotra 9, 3 3 gold badges 42 42 silver badges 49 49 bronze badges. Nasz Njoka Sr. Note : while this example could generally work, it does not provide any error handling and also lacks some basic understanding of AsyncTask 's advantages proper use of parametrization, parallel execution..
Please refer to my examples below for details. Yes Droidman, I agree with you. This piece of code should be taken as a tamplate and one has to complete it on his own, including error handling. By the way, your code lacks error handling too. What will happened to your connection and streams in case of IOException? Androider please take a closer look at my download method, particularly the doInBackground method of the task that I use. An IOException would land in the catch Throwable e block, resulting in an ImageError being returned and the onError callback being triggered.
The ImageError object will contain the original stack trace and the cause of the occurred Exception — Droidman. Yes, but your connection will not be disconnected and your streams will not be closed — Androider. Androider ah, I see your point. Though I never noticed any suspicious leaks on my test devices, this behavior might be different on other devices. Thanks for the hint - I have updated the code — Droidman. Show 1 more comment. Request downloadUri ; request. No, really. DarkCygnus 6, 3 3 gold badges 34 34 silver badges 53 53 bronze badges.
Your code work perfect for one image! I get a message saying file damaged! How do we know whether it is downloaded successfully or failed — Prabs. Ajay Ajay 1, 11 11 silver badges 28 28 bronze badges. Here are the steps to follow: 1. PNG, , foStream ; foStream. If you want further steps such as load the image you can follow these extra steps: 4. The Butteraugli project is a library to test an image's Psychovisual Error Threshold: the point at which a viewer starts to notice image degradation.
In other words, this project attempts to quantify how distorted your compressed image is. You can then choose the image that is the best balance of file size and Butteraugli level. Butteraugli allows you to proceed based on either output or input. That is, you can look for the lowest quality setting before a user perceives noticeable distortion in the resulting image, or you can iteratively set image-distortion levels to learn their associated quality levels. It is tempting to keep only a single resolution of an image on a server.
When a device accesses the image, the server serves it at that one resolution and leaves downscaling to the device. This solution is convenient for the developer, but potentially painful for the user, because the solution forces the user to download much more data than they need.
You should instead store multiple sizes of images, and serve the size that is most appropriate for a particular use case. For example, for a thumbnail, serving an actual thumbnail image instead of serving and downscaling a full-size version consumes much less network bandwidth. This approach is good for download speed, and is less costly for users who may be using limited or metered data plans.
Proceeding like this also results in the image's taking less space on the device and in main memory. In the case of large images, such as 4K ones, this approach also saves the device from having to resize images before loading them. Implementing this approach requires that you have a backend image service to provide images at various resolutions with proper caching. There are existing services that can provide help with this task.
For example, App Engine comes with image resizing functionality already installed. Content and code samples on this page are subject to the licenses described in the Content License. App Basics. Build your first app. App resources. Resource types. App manifest file. Device compatibility. Multiple APK support. Tablets, large screens, and foldables. Build responsive UIs. Build for foldables. Getting started. Handling data. User input. Watch Face Studio.
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Did you mean:. All posts Previous Topic Next Topic. Cheve Advocate I. Images not showing on android. Message 1 of 9. PeteMc Resolver I. What is the image source, is there any authentication required to view the image?
Message 2 of 9. In response to PeteMc. Images are in a static public website I have, so I use the url to the image. Message 3 of 9. In response to Cheve.
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