Download the sample.
Images can be shared across platforms with Xamarin. Forms, they can be loaded specifically for each platform, or they can be downloaded for display. Images are a crucial part of application navigation, usability, and branding.
Forms applications need to be able to share images across all platforms, but also potentially display different images on each platform. Platform-specific images are also required for icons and splash screens; these need to be configured on a per-platform basis.
Forms uses the Image view to display images on a page. It has two important properties:. ImageSource instances can be obtained using static methods for each type of image source:. The Aspect property determines how the image will be scaled to fit the display area:. Images can be loaded from a local filean 208v switch wiring diagram diagram base website wiring diagram resourcedownloadedor loaded from a stream.
In addition, font icons can be displayed by the Image view by specifying the font icon data in a FontImageSource object.
For more information, see Display font icons in the Fonts guide. Image files can be added to each application project and referenced from Xamarin.
How to find the absolute path of Assets folder in android.
Forms shared code. This method of distributing images is required when images are platform-specific, such as when using different resolutions on different platforms, or slightly different designs.
To use a single image across all apps, the same filename must be used on every platformand it should be a valid Android resource name ie. However, this method of working with images in an iOS app has been deprecated by Apple. For more information, see Image Sizes and Filenames. Adhering to these rules for file naming and placement allows the following XAML to load and display the image on all platforms:.
For more flexibility the Device. RuntimePlatform property can be used to select a different image file or path for some or all platforms, as shown in this code example:.
To use the same image filename across all platforms the name must be valid on all platforms. Android drawables have naming restrictions — only lowercase letters, numbers, underscore, and period are allowed — and for cross-platform compatibility this must be followed on all the other platforms too.
The example filename waterfront. Forms uses the native platforms' APIs for loading local images, so it automatically supports alternate resolutions if the files are correctly named and located in the project. The preferred way to manage images since iOS 9 is to drag images for each resolution required to the appropriate asset catalog image set. Prior to iOS 9, retina versions of the image could be placed in the Resources folder - two and three times the resolution with a 2x or 3x suffixes on the filename before the file extension eg.Then we can show them one by one when user want.
The only thing you need to do is to set the intent type as below. Please note, you must use above setType method to set at least one type, otherwise below exception will be thrown. In some cases, we do not only need to save the image uri, because the uri maybe changed later. So we need to save the real image to our app folder. And then use it later such as upload to server. So we need to get the uri represent file real local path, then we can read it and save a copy to our app folder.
Because from android KitKat sdk version 19the system returned uri is not real local file path uri, it is a content provider style uri, so we should parse the uri and get the real file local path by query related content provider image provider, audio provider, video provider and document provider. Hey, Thank you for the code. It works for most apps but does not work for images shared from WhatsApp. I am trying to catch the images shared from WhatsApp to my app but the uri of the images does not give the real path.
Make sure the Cursor is initialized correctly. From the error message, it said the col number is -1 which is not correct, because the minimum col value should be 0. I think you should set a breakpoint at where the error occurred, and debug into it to fix this error. Hey I am facing the same problem when trying to open the file shared on whatsapp. Have you found any solution? Your code is wonderful. This helped me a lot with my school project.
But how did you learn all this if the info is not in the Android documentation? Or at least you should understand that not all Uris can provide you with a file path! For example, In my case user draws a picture, and it is saved as a Bitmap in. Thank you. But in android emulator include Android 9.
And assets added to your project will show up just like a file system that can read from by app using AssetManager.
If you want to access the stream of this file, you can check the official document like this: Using Android Assets. Learn more. Asked 2 years, 9 months ago. Active 2 years, 9 months ago. Viewed 3k times. SetAnchorView video ; video. SetMediaController mediaController ; video. SetVideoURI uri ; video. RequestFocus ; video. Cheesebaron Devrath Devrath For the resources folder, it's just the name and Xamarin will find it by itself.
Try "MyVideo. Active Oldest Votes. AbsolutePath; And assets added to your project will show up just like a file system that can read from by app using AssetManager. Grace Feng Grace Feng Still getting file not found exception, Resource is also marked as android asset. Devrath, are you sure that your video's build action is AndroidAsset?
Strange thing, I've tested this code. Devrath, o, sorry, I found the problem, the file can be found with that url, problem is that playing the. I need to edit my answer. Still i get the file not found exception You can able to find a file from AssetManager of android and get a stream of file directly. Pratik Patel Pratik Patel 16 1 1 bronze badge. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home? Featured on Meta. Community and Moderator guidelines for escalating issues via new response….
Feedback on Q2 Community Roadmap.New Unity Live Help updates. Check them out here! Search Unity. Log in Create a Unity ID. Unity Forum. Forums Quick Links. Asset Store Spring Sale starts soon! Joined: May 1, Posts: 7. I use UnityWebRequest to load images over the internet. The non-block native texture handling works well and everything is quite smooth. This is very handy for caching as all you really need to do is alter the load path prefix to switch from a remote url to a local file path.
Only problem is it doesn't seem to work on Android. Anyone out there able to get local UntyWebRequest image loading happening from an Android phone?
KeirREANov 18, Joined: Aug 24, Posts: I have a similar problem. UnityWebRequest for local files doesn't work on even Windows since 5. I tried again 5. PickyguyFeb 1, I found a workaround by accident. PickyguyMar 2, Joined: Jul 16, Posts: 3. In the Unity 5. If you use 3 slashes, it does not work. Victor-GarciaApr 22, Joined: Jul 20, Posts: 2.
File Storage and Access with Xamarin.Android
If the first character of the path Application. FYI for anyone dealing with that issue. EdahsrevlisOct 16, Joined: Jul 31, Posts: 2, In most cases there are more efficient ways to read local files.
There is no "absolute path for a file existing in the asset folder". Use an AssetManager object to get an InputStream on an asset. Web view would not load any of my assets without the 3. I tried 2 as previously commented by CommonsWare and it wouldn't work.
Then I looked at CommonsWare's source on github and noticed the extra forward slash. This testing though was only done on the 1. So I've edited this so it still makes sense with his current answer. Finally, I found a way to get the path of a file which is present in assets from this answer in Kotlin. Here we are copying the assets file to cache and getting the file path from that cache file. Yeah you can't access your drive folder from you android phone or emulator because your computer and android are two different OS.
Get Assets folder path and read txt file to string Android example code
I would go for res folder of android because it has good resources management methods. Until and unless you have very good reason to put you file in assets folder.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I need to know the string path to a file on assets folder, because I'm using a map API that needs to receive a string path, and my maps must be stored on assets folder. AFAIK the files in the assets directory don't get unpacked.
Instead, you'll have to extract the asset and write it to a seperate file, like Dumitru suggests:. You should never use InputStream. It returns only bytes that are buffered. Method with.Create a FileProvider and provider path XML in Android
Just to add on Jacek's perfect solution. If you're trying to do this in Kotlin, it wont work immediately. Instead, you'll want to use this:. Learn more.
How to get the android Path string to a file on Assets folder? Ask Question. Asked 8 years, 4 months ago. Active 1 year, 3 months ago. Viewed k times. Which is the correct string path file to the file m1. Active Oldest Votes. So, you really can't make stuff that expects a file accept an asset 'file'. Jacob Nordfalk Jacob Nordfalk 3, 17 17 silver badges 20 20 bronze badges.
FileNotFoundException: m1. You can use this method. Jacek Marchwicki Jacek Marchwicki 1, 10 10 silver badges 14 14 bronze badges. Thanks Jacket, Kotlin part really helped me. Have a look at the ReadAsset. Dumitru Hristov Dumitru Hristov 1, 1 1 gold badge 11 11 silver badges 27 27 bronze badges. It doesn't works for me, the line is. What exception exactly does it throw? CheesusCrust CheesusCrust 79 2 2 bronze badges.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.Posted by Dimitri Oct 28th, Filed under Programming.
But what is a URI? This way, we need to get the URI of the file. This method can also be used to obtain any file URI. Expanding a little bit the previous example, to correctly play the video file while using the emulator, instead of using setVideoPath String path like:. Want to see more posts like this more often?
Please donate by clicking at the button below:. Don't feel like donating? Hi I try your approach to uri of file. Yes, you are correct. Just corrected it. Thanks for pointing that out! Hi, I would like to know how can I know the Mime type of the video media, after I but it in a videoView, indeed, I you to convert it into Base 64.
I bookmarked it. Exploring in Yahoo I finally stumbled upon this web site. Studying this info So i am happy to express that I have an incredibly just right uncanny feeling I discovered just what I needed. I most surely will make certain to do not disregard this site and provides it a look regularly. Name required. Mail will not be published required. Your Comment. Post Comments RSS. Comment E-mail Del. Related Posts Android: get String resource at another XML namespace Android: Disabling anti-aliasing for pixel art Android: how to create a loading screen — Part 3 Android: how to create a loading screen — Part 2 Android: how to create a loading screen — Part 1.
Shubham says:. July 15, at am. Juan Ci says:. September 7, at pm.