Xamarin Android Player For Mac
2022年1月1日Download here: http://gg.gg/xeuos
By Doumer
*Uncategorized ,
*16 May
However with that said, Visual Studio on the Mac is coming along very nicely so if you are doing a lot of development on a Mac like I do, I almost live 100 percent in Visual Studio on the Mac, so they’re both great experiences to use.’ And Xamarin Live Player, no doubt, will continue to generate oohs and aahs from his audiences. Xamarin Android Player has deep integration with Visual Studio and Xamarin Studio and a native user interface on both Mac & Windows. Running Android on an x86 virtual machine using hardware accelerated virtualization and OpenGL, Xamarin Android Player is significantly faster than the stock Android Emulator.
Hi friends welcome back for another post. Today we will talk about playing media in our Xamarin Forms apps. We won’t be using Xamarin Community Toolkit’s media element. Instead, we will use a VLC media player in Xamarin Forms. Why? because VLC media player can be an awesome alternative to the native media players available in Android and iOS. These native players work well, but are limited and lack some important functionalities.What is VLC Media Player
VLC is a popular free open-source media player that is available on every major OS. It originated as a student project at l’ecole central de Paris. This project named VideoLan was initially meant to consist of a client and a server, to stream videos across the school’s campus. VLC which stands for VideoLan Client was initially the client part of the project. Now it is mostly known for its powerful media player functionalities. Source: Wikipedia.Why Use VLC Media Player in Xamarin Forms
You might ask yourself; why do we need another media player, when Android and iOS have their native media players. The answer is simple, the native media players on each of these platforms are not powerful enough to handle certain scenarios like HLs streaming, Some file formats, and protocols… The VLC media player can be a great solution to implement these features in your app.What we will Cover Today
*Adding VLC Media Player to your Xamarin Forms project
*Playing media
*Important things to consider when using VLC Media Player
*Controlling media with VLC media player
*Streaming media from sources that require authentication
*The Media Player Element
*A brief note about playlist managementAdding VLC Media Player in Xamarin Forms Projects
It is very easy to get started with VLC media player. You first have to add appropriate nuget packages into your projects.
*Every Project (Platforms + shared project):
*VideoLAN.LibVLC.Forms
*iOS Project
*VideoLAN.LibVLC.iOS
*Android Project
*VideoLAN.LibVLC.AndroidPlaying media
In this demo, we will play video, and this is done just as you would do if you want to play audio. First, on my main page, in XAML, I added the video view.
This video view will display the video we are playing. The next thing we have to do is, create a media player and pass the instance to the video view. Then we call the “Play” method of the media player. This plays the media we passed in the URL. This is very basic, the next thing is to control the media we are playing.
NOTE: If you want to play music, you need only to create the media player as we did above, and call its “Play” method. This plays media in your app, even when the app is in the background.Important things to consider when using VLC Media Player
After using VLC library, and talking with the guys maintaining this awesome library I learned from them some important things to take into consideration when using VLC media player.
*After streaming your media, you should consider handling the disposal of the libvlcsharp objects (libvlc, media player, media)
*When playing multiple media items with VLC, it is better to use one libvlc instance only and multiple media playersControlling Media
Now we know that playing media with VLC Media Player in Xamarin Forms is easy. The next thing is to let our users control the media just like any awesome media-playing app we know. For this, I added a set of buttons, sliders on our main page. The buttons will serve for (Play, Pause, Forward…) the sliders will be for volume and seek. We will go through each of these functionalities one by one. In the code behind our main page, I put the event handler methods for each of these actions performed on the UI.Play, Pause and Stop
The most basic functionality a media-playing app should have is to play/pause media. We have above the “Play” method this method lets us play a media item passed to the media player. This is fine if we are playing media for the first time, thus we want to start playing from the beginning of the media. But what if we want to play, pause when the user wants, and resume later? This is easy, as we can see below.
Now, once we are done playing, what if we want to stop the media? Easy… check how it is done below.Move Forward, Backward and Seek-to Specific Time
Now, our user doesn’t want to watch a specific part of our movie, what does he do ? he moves the stream forward. What if he changes his mind and wants to go back? What if he wants to watch only a specific part of the movie and wants to seek the stream to that part? VLC Media Player got you covered. This is how we do it.
Note that the media player item has a “Time” property. We can set a value to this property that will correspond to the time position where we want it to stream.
Once we do that, we can use the above method to move forward or backward for 10 seconds in this example.
When a user moves the duration slider, it causes the slider’s value to change. Since our slider has a min value of 0 and a max value of 100, we can consider its value as a percentage played and that left to play. The VLC Media Player provides us the “Position” property that is the movie’s position percentage in a range of 0.0 to 1. Taking this into consideration, here is how we can leverage it to implement the seek functionality.Displaying Elapsed time and Duration
Users want to know how long our movies, music will last and how much of it they have already watched. So we need to implement this functionality too. To do this, we will need to subscribe to a few media player events (PositionChangedand Playing). When the media player starts playing, the “Playing” event is called. When this event is fired, we can get the media’s duration from the “Length” property of VLC media player object.
As time passes and the user streams more of the movie, we want to display how long he has been watching. We do this by subscribing to the player’s “TimeChanged” event. In there, we get the media player’s “Time” property and display it to the user.Controlling Volume
If our users want to mute our player or increase the volume for some reason, it is extremely easy. To mute, here is how it is done.
To control the volume, it is even easier.Streaming Media From Sources that Require Authentication
Most often, you won’t stream media from free public sources. You will need the player to authenticate to that source. Unfortunately, VLC does not have a built in system for authentication, last time I checked, this was to be implemented. But, luckily we have a way around this! To authenticate, instead of passing headers to the player, we use an http client to query the API with the appropriate headers, then create a stream to the resource that we pass to the player as a “StreamMediaInput“. Note, if you are downloading media to play locally on iOS, here is an article demonstrating how to download this data from an API that streams its content bytes by bytes.Error Handling
Once the media player starts playing media, errors might occur. If it is streaming, the network connection might be interrupted for example. We listen to errors that occur in the player with the “EncounteredError” event.The Media Player Element
The VLC Media Player Element is a view that contains a video view and controls already available to manipulate any media stream at its disposal. This offers a plug-and-play functionality you can leverage to quickly build apps that consume media without the burden of writing UI elements yourself. You can customize this control to suit your purpose. Read more about this in this post by Martin Finkel, who introduces this awesome control.
*This control derives from Xamarin Forms’ content view so, it behaves just as such. If its appearance is not very attractive to you (I’m sure it won’t be :-P) it can be modified and styled like any Xamarin forms control. Here is an example.
*This control actually requires Fontawesome to be installed, since its image assets depend on fontawesome, ( Note: this dependency on fontawesome is temporary, as mentioned by Martin Finkel in the article above). Note:You have to add font awesome the traditional way, that is in each platform project. Doing this in the shared project as recommended for the latest Xamarin forms releases didn’t work. If it does for you, please leave a comment.
Adding the media player element to your project is extremely easy. First, add font-awesome as mentioned above and add an instance of the media player element to your page. Then bind its properties to the ViewModel. In our source code, we added a small sample demonstrating how to use this control. The sample is inspired by this awesome demo.Playlist Management With VLC Media Player
One of the features several media playing apps have in common, is allowing users to read through multiple items. VLC bindings for Xamarin only have a tiny portion of VLC’s native libraries list management. This portion can’t be used to manage playlists, and bringing this native code to Xamarin bindings is not planned as mentioned here by one of the engineers maintaining this library. Meaning that you need to implement your own playlist management logic on top of VLC. But this is not a big deal. The VLC media player has an event called “EndReached Genymotion emulator for mac. ” this event is fired once the media that is currently playing ends. You can listen to this event and play the next item, or select a random item from your playlist, etc. This allows you to build your own playlist logic.Conclusion
Today we covered one of the most powerful media players out available out there for mobile devs. I’ve been a long-time user of VLC on Windows, Linux, and Mac. Therefore, working with this amazing library was such a pleasure. I was working on a project that required media playing functionality, but iOS’s native player didn’t do the job. Luckily, VLC came in to save the day. This article contained a condensed version of some of the things I learned throughout this journey.Useful Links Follow me on social media and stay updated-->
XAML Hot Reload plugs into your existing workflow to increase your productivity and save you time. Without XAML Hot Reload, you have to build and deploy your app every time you want to see a XAML change. With Hot Reload, when you save your XAML file the changes are reflected live in your running app. In addition, your navigation state and data will be maintained, enabling you to quickly iterate on your UI without losing your place in the app. Therefore, with XAML Hot Reload, you’ll spend less time rebuilding and deploying your apps to validate UI changes.
Note
If you’re writing a native UWP or WPF app, not using Xamarin.Forms, see XAML Hot Reload for UWP and WPF.System requirementsIDE/FrameworkMinimum Version RequiredVisual Studio 201916.9 for changes only mode, 16.4 for full page modeVisual Studio 2019 for Mac8.9 for changes only mode, 8.4 for full page modeXamarin.Forms5.0.0.2012 for changes only mode; 4.1 for full page modeEnable XAML Hot Reload for Xamarin.Forms
If you are starting from a template, XAML Hot Reload is on by default and the project is configured to work with no additional setup. Debug your Android, iOS, or UWP app on an emulator or physical device and change your XAML to trigger a XAML Hot Reload.
If you’re working from an existing Xamarin.Forms solution, no additional installation is required to use XAML Hot Reload, but you might have to double check your configuration to ensure the best experience. First, enable it in your IDE settings:
*On Windows, check the Enable XAML Hot Reload checkbox (and the required platforms) at Tools > Options > Debugging > Hot Reload.
*In earlier versions of Visual Studio 2019, the checkbox is at Tools > Options > Xamarin > Hot Reload.
*On Mac, check the Enable Xamarin Hot Reload checkbox at Visual Studio > Preferences > Tools for Xamarin > XAML Hot Reload.
*In earlier versions of Visual Studio for Mac, the checkbox is at Visual Studio > Preferences > Projects > Xamarin Hot Reload.
Then, in your Android and iOS build settings, check that the Linker is set to ’Don’t Link’ or ’Link None’. To use XAML Hot Reload with a physical iOS device, you also have to check Enable the Mono interpreter (Visual Studio 16.4 and above) or add --interpreter to your Additional mtouch args (Visual Studio 16.3 and below).
You can use the following flowchart to check your existing project’s setup for use with XAML Hot Reload:Hot Reload modes
XAML Hot Reload can work in two different modes - the newer changes only mode and the older full page mode.
From Visual Studio 16.9 and Visual Studio for Mac 8.9, the default behavior is for changes only mode to be used for all apps that use Xamarin.Forms 5.0 or newer. For older versions of Xamarin.Forms, full page mode is used. However, you can force use of full page mode for allapps in the Hot Reload IDE settings (Tools > Options > Debugging > Hot Reload on Windows or Visual Studio > Preferences > Tools for Xamarin > XAML Hot Reload on Mac).
Changes only mode parses the XAML to see exactly what changed when you make an edit, and sends just those changes to the running app. This is the same technology used for WPF and UWP Hot Reload. It preserves UI state, since it doesn’t recreate the UI for the full page, just updating changed properties on controls affected by edits. Changes only mode also enables use of the Live Visual Tree.
By default, with changes only mode you don’t need to save your file to see the changes - updates are applied immediately, as you type.However, you can change this behavior to update only on file save. This can be accomplished by checking the Apply XAML Hot Reload on document save checkbox (currently only available on Windows) in the Hot Reload IDE settings. Only updating on document save can sometimes be useful if you make bigger XAML updates and don’t wish them to be displayed until they are complete.
Full page mode sends the full XAML file to the running app after you makes edits and save. The running app then reloads the page, recreating its controls - you’ll see the UI refresh.
Changes only mode is the future of Hot Reload and we recommend using it whenever possible. It’s fast, preserves UI state, and supports Live Visual Tree. Full page mode is still provided for apps that haven’t yet been updated to Xamarin.Forms 5.0.
Note
You’ll need to restart the debug session when switching modes.XAML errors
Changes only mode: If you make a change the Hot Reload XAML parser sees as invalid, it will showthe error underlined in the editor and include it in the errors window. These Hot Reload errors have an error code starting with ’XHR’ (for XAML Hot Reload). If there are any such errors on the page, Hot Reloadwon’t apply changes, even if made on other parts of the page. Fix all the errors for Hot Reload to start working again for the page.
Full page mode: If you make a change that XAML Hot Reload can’t reload, it will showthe error underlined in the editor and include it in the errors window. These changes, known as rude edits, include mistyping your XAML or wiring a control to an event handler that doesn’t exist. Download movies to macbook pro. Even with a rude edit, you can continue to reload without restarting the app - make another change elsewhere in the XAML file and hit save. The rude edit won’t be reloaded, but your other changes will continue to be applied.Reload on multiple platforms at once
XAML Hot Reload supports simultaneous debugging in Visual Studio and Visual Studio for Mac. You can deploy an Android and an iOS target at the same time to see your changes reflected on both platforms at once. To debug on multiple platforms, see:
*WindowsHow To: Set multiple startup projects
*MacSet multiple startup projectsKnown limitations
*Xamarin.Forms targets beyond Android, iOS, and UWP (for example, macOS) aren’t currently supported.
*Use of [XamlCompilation(XamlCompilationOptions.Skip)], disabling XAML compilation, isn’t supported and can cause issues with the Live Visual Tree.
*You can’t add, remove, or rename files or NuGet packages during a XAML Hot Reload session. If you add or remove a file or NuGet package, rebuild and redeploy your app to continue using XAML Hot Reload.
*Set your linker to Don’t Link or Link None for the best experience. The Link SDK only setting works most of the time, but it may fail in certain cases. Linker settings can be found in your Android and iOS build options.
*Debugging on a physical iPhone requires the interpreter to use XAML Hot Reload. To do this, open the project settings, select the iOS Build tab, and ensure Enable the Mono interpreter setting is enabled. You may need to change the Platform option at the top of the property page to iPhone.
*XAML Hot Reload can’t reload C# code, including event handlers, custom controls, page code-behind, and additional classes.TroubleshootingDownload Xamarin Android Player For Mac
*Bring up the XAML Hot Reload output to see status messages, which can help in troubleshooting:
*Windows: bring up Output with View > Output and select Xamarin Hot Reload under Show output from: at the top
*Mac: hover over XAML Hot Reload in the status bar to show that pad
*If XAML Hot Reload fails to initialize:
*Update your Xamarin.Forms version.
*Ensure you are on the latest version of the IDE.
*Set your Android or iOS Linker settings to Don’t Link in the project’s build settings.
*If nothing happens upon saving your XAML file, ensure that XAML Hot Reload is enabled in the IDE.
*If you’re debugging on a physical iPhone and your app becomes unresponsive, check that the interpreter is enabled. To turn it on, check Enable the Mono interpreter (Visual Studio 16.4/8.4 and up) or add --interpreter to the Additional mtouch arguments field (Visual Studio 16.3/8.3 and prior) in your iOS Build settings.Xamarin Android Player For Mac
To report a bug, use Help > Send Feedback > Report a Problem on Windows, and Help > Report a Problem on Mac.Install XamarinRelated links
Download here: http://gg.gg/xeuos
https://diarynote.indered.space
By Doumer
*Uncategorized ,
*16 May
However with that said, Visual Studio on the Mac is coming along very nicely so if you are doing a lot of development on a Mac like I do, I almost live 100 percent in Visual Studio on the Mac, so they’re both great experiences to use.’ And Xamarin Live Player, no doubt, will continue to generate oohs and aahs from his audiences. Xamarin Android Player has deep integration with Visual Studio and Xamarin Studio and a native user interface on both Mac & Windows. Running Android on an x86 virtual machine using hardware accelerated virtualization and OpenGL, Xamarin Android Player is significantly faster than the stock Android Emulator.
Hi friends welcome back for another post. Today we will talk about playing media in our Xamarin Forms apps. We won’t be using Xamarin Community Toolkit’s media element. Instead, we will use a VLC media player in Xamarin Forms. Why? because VLC media player can be an awesome alternative to the native media players available in Android and iOS. These native players work well, but are limited and lack some important functionalities.What is VLC Media Player
VLC is a popular free open-source media player that is available on every major OS. It originated as a student project at l’ecole central de Paris. This project named VideoLan was initially meant to consist of a client and a server, to stream videos across the school’s campus. VLC which stands for VideoLan Client was initially the client part of the project. Now it is mostly known for its powerful media player functionalities. Source: Wikipedia.Why Use VLC Media Player in Xamarin Forms
You might ask yourself; why do we need another media player, when Android and iOS have their native media players. The answer is simple, the native media players on each of these platforms are not powerful enough to handle certain scenarios like HLs streaming, Some file formats, and protocols… The VLC media player can be a great solution to implement these features in your app.What we will Cover Today
*Adding VLC Media Player to your Xamarin Forms project
*Playing media
*Important things to consider when using VLC Media Player
*Controlling media with VLC media player
*Streaming media from sources that require authentication
*The Media Player Element
*A brief note about playlist managementAdding VLC Media Player in Xamarin Forms Projects
It is very easy to get started with VLC media player. You first have to add appropriate nuget packages into your projects.
*Every Project (Platforms + shared project):
*VideoLAN.LibVLC.Forms
*iOS Project
*VideoLAN.LibVLC.iOS
*Android Project
*VideoLAN.LibVLC.AndroidPlaying media
In this demo, we will play video, and this is done just as you would do if you want to play audio. First, on my main page, in XAML, I added the video view.
This video view will display the video we are playing. The next thing we have to do is, create a media player and pass the instance to the video view. Then we call the “Play” method of the media player. This plays the media we passed in the URL. This is very basic, the next thing is to control the media we are playing.
NOTE: If you want to play music, you need only to create the media player as we did above, and call its “Play” method. This plays media in your app, even when the app is in the background.Important things to consider when using VLC Media Player
After using VLC library, and talking with the guys maintaining this awesome library I learned from them some important things to take into consideration when using VLC media player.
*After streaming your media, you should consider handling the disposal of the libvlcsharp objects (libvlc, media player, media)
*When playing multiple media items with VLC, it is better to use one libvlc instance only and multiple media playersControlling Media
Now we know that playing media with VLC Media Player in Xamarin Forms is easy. The next thing is to let our users control the media just like any awesome media-playing app we know. For this, I added a set of buttons, sliders on our main page. The buttons will serve for (Play, Pause, Forward…) the sliders will be for volume and seek. We will go through each of these functionalities one by one. In the code behind our main page, I put the event handler methods for each of these actions performed on the UI.Play, Pause and Stop
The most basic functionality a media-playing app should have is to play/pause media. We have above the “Play” method this method lets us play a media item passed to the media player. This is fine if we are playing media for the first time, thus we want to start playing from the beginning of the media. But what if we want to play, pause when the user wants, and resume later? This is easy, as we can see below.
Now, once we are done playing, what if we want to stop the media? Easy… check how it is done below.Move Forward, Backward and Seek-to Specific Time
Now, our user doesn’t want to watch a specific part of our movie, what does he do ? he moves the stream forward. What if he changes his mind and wants to go back? What if he wants to watch only a specific part of the movie and wants to seek the stream to that part? VLC Media Player got you covered. This is how we do it.
Note that the media player item has a “Time” property. We can set a value to this property that will correspond to the time position where we want it to stream.
Once we do that, we can use the above method to move forward or backward for 10 seconds in this example.
When a user moves the duration slider, it causes the slider’s value to change. Since our slider has a min value of 0 and a max value of 100, we can consider its value as a percentage played and that left to play. The VLC Media Player provides us the “Position” property that is the movie’s position percentage in a range of 0.0 to 1. Taking this into consideration, here is how we can leverage it to implement the seek functionality.Displaying Elapsed time and Duration
Users want to know how long our movies, music will last and how much of it they have already watched. So we need to implement this functionality too. To do this, we will need to subscribe to a few media player events (PositionChangedand Playing). When the media player starts playing, the “Playing” event is called. When this event is fired, we can get the media’s duration from the “Length” property of VLC media player object.
As time passes and the user streams more of the movie, we want to display how long he has been watching. We do this by subscribing to the player’s “TimeChanged” event. In there, we get the media player’s “Time” property and display it to the user.Controlling Volume
If our users want to mute our player or increase the volume for some reason, it is extremely easy. To mute, here is how it is done.
To control the volume, it is even easier.Streaming Media From Sources that Require Authentication
Most often, you won’t stream media from free public sources. You will need the player to authenticate to that source. Unfortunately, VLC does not have a built in system for authentication, last time I checked, this was to be implemented. But, luckily we have a way around this! To authenticate, instead of passing headers to the player, we use an http client to query the API with the appropriate headers, then create a stream to the resource that we pass to the player as a “StreamMediaInput“. Note, if you are downloading media to play locally on iOS, here is an article demonstrating how to download this data from an API that streams its content bytes by bytes.Error Handling
Once the media player starts playing media, errors might occur. If it is streaming, the network connection might be interrupted for example. We listen to errors that occur in the player with the “EncounteredError” event.The Media Player Element
The VLC Media Player Element is a view that contains a video view and controls already available to manipulate any media stream at its disposal. This offers a plug-and-play functionality you can leverage to quickly build apps that consume media without the burden of writing UI elements yourself. You can customize this control to suit your purpose. Read more about this in this post by Martin Finkel, who introduces this awesome control.
*This control derives from Xamarin Forms’ content view so, it behaves just as such. If its appearance is not very attractive to you (I’m sure it won’t be :-P) it can be modified and styled like any Xamarin forms control. Here is an example.
*This control actually requires Fontawesome to be installed, since its image assets depend on fontawesome, ( Note: this dependency on fontawesome is temporary, as mentioned by Martin Finkel in the article above). Note:You have to add font awesome the traditional way, that is in each platform project. Doing this in the shared project as recommended for the latest Xamarin forms releases didn’t work. If it does for you, please leave a comment.
Adding the media player element to your project is extremely easy. First, add font-awesome as mentioned above and add an instance of the media player element to your page. Then bind its properties to the ViewModel. In our source code, we added a small sample demonstrating how to use this control. The sample is inspired by this awesome demo.Playlist Management With VLC Media Player
One of the features several media playing apps have in common, is allowing users to read through multiple items. VLC bindings for Xamarin only have a tiny portion of VLC’s native libraries list management. This portion can’t be used to manage playlists, and bringing this native code to Xamarin bindings is not planned as mentioned here by one of the engineers maintaining this library. Meaning that you need to implement your own playlist management logic on top of VLC. But this is not a big deal. The VLC media player has an event called “EndReached Genymotion emulator for mac. ” this event is fired once the media that is currently playing ends. You can listen to this event and play the next item, or select a random item from your playlist, etc. This allows you to build your own playlist logic.Conclusion
Today we covered one of the most powerful media players out available out there for mobile devs. I’ve been a long-time user of VLC on Windows, Linux, and Mac. Therefore, working with this amazing library was such a pleasure. I was working on a project that required media playing functionality, but iOS’s native player didn’t do the job. Luckily, VLC came in to save the day. This article contained a condensed version of some of the things I learned throughout this journey.Useful Links Follow me on social media and stay updated-->
XAML Hot Reload plugs into your existing workflow to increase your productivity and save you time. Without XAML Hot Reload, you have to build and deploy your app every time you want to see a XAML change. With Hot Reload, when you save your XAML file the changes are reflected live in your running app. In addition, your navigation state and data will be maintained, enabling you to quickly iterate on your UI without losing your place in the app. Therefore, with XAML Hot Reload, you’ll spend less time rebuilding and deploying your apps to validate UI changes.
Note
If you’re writing a native UWP or WPF app, not using Xamarin.Forms, see XAML Hot Reload for UWP and WPF.System requirementsIDE/FrameworkMinimum Version RequiredVisual Studio 201916.9 for changes only mode, 16.4 for full page modeVisual Studio 2019 for Mac8.9 for changes only mode, 8.4 for full page modeXamarin.Forms5.0.0.2012 for changes only mode; 4.1 for full page modeEnable XAML Hot Reload for Xamarin.Forms
If you are starting from a template, XAML Hot Reload is on by default and the project is configured to work with no additional setup. Debug your Android, iOS, or UWP app on an emulator or physical device and change your XAML to trigger a XAML Hot Reload.
If you’re working from an existing Xamarin.Forms solution, no additional installation is required to use XAML Hot Reload, but you might have to double check your configuration to ensure the best experience. First, enable it in your IDE settings:
*On Windows, check the Enable XAML Hot Reload checkbox (and the required platforms) at Tools > Options > Debugging > Hot Reload.
*In earlier versions of Visual Studio 2019, the checkbox is at Tools > Options > Xamarin > Hot Reload.
*On Mac, check the Enable Xamarin Hot Reload checkbox at Visual Studio > Preferences > Tools for Xamarin > XAML Hot Reload.
*In earlier versions of Visual Studio for Mac, the checkbox is at Visual Studio > Preferences > Projects > Xamarin Hot Reload.
Then, in your Android and iOS build settings, check that the Linker is set to ’Don’t Link’ or ’Link None’. To use XAML Hot Reload with a physical iOS device, you also have to check Enable the Mono interpreter (Visual Studio 16.4 and above) or add --interpreter to your Additional mtouch args (Visual Studio 16.3 and below).
You can use the following flowchart to check your existing project’s setup for use with XAML Hot Reload:Hot Reload modes
XAML Hot Reload can work in two different modes - the newer changes only mode and the older full page mode.
From Visual Studio 16.9 and Visual Studio for Mac 8.9, the default behavior is for changes only mode to be used for all apps that use Xamarin.Forms 5.0 or newer. For older versions of Xamarin.Forms, full page mode is used. However, you can force use of full page mode for allapps in the Hot Reload IDE settings (Tools > Options > Debugging > Hot Reload on Windows or Visual Studio > Preferences > Tools for Xamarin > XAML Hot Reload on Mac).
Changes only mode parses the XAML to see exactly what changed when you make an edit, and sends just those changes to the running app. This is the same technology used for WPF and UWP Hot Reload. It preserves UI state, since it doesn’t recreate the UI for the full page, just updating changed properties on controls affected by edits. Changes only mode also enables use of the Live Visual Tree.
By default, with changes only mode you don’t need to save your file to see the changes - updates are applied immediately, as you type.However, you can change this behavior to update only on file save. This can be accomplished by checking the Apply XAML Hot Reload on document save checkbox (currently only available on Windows) in the Hot Reload IDE settings. Only updating on document save can sometimes be useful if you make bigger XAML updates and don’t wish them to be displayed until they are complete.
Full page mode sends the full XAML file to the running app after you makes edits and save. The running app then reloads the page, recreating its controls - you’ll see the UI refresh.
Changes only mode is the future of Hot Reload and we recommend using it whenever possible. It’s fast, preserves UI state, and supports Live Visual Tree. Full page mode is still provided for apps that haven’t yet been updated to Xamarin.Forms 5.0.
Note
You’ll need to restart the debug session when switching modes.XAML errors
Changes only mode: If you make a change the Hot Reload XAML parser sees as invalid, it will showthe error underlined in the editor and include it in the errors window. These Hot Reload errors have an error code starting with ’XHR’ (for XAML Hot Reload). If there are any such errors on the page, Hot Reloadwon’t apply changes, even if made on other parts of the page. Fix all the errors for Hot Reload to start working again for the page.
Full page mode: If you make a change that XAML Hot Reload can’t reload, it will showthe error underlined in the editor and include it in the errors window. These changes, known as rude edits, include mistyping your XAML or wiring a control to an event handler that doesn’t exist. Download movies to macbook pro. Even with a rude edit, you can continue to reload without restarting the app - make another change elsewhere in the XAML file and hit save. The rude edit won’t be reloaded, but your other changes will continue to be applied.Reload on multiple platforms at once
XAML Hot Reload supports simultaneous debugging in Visual Studio and Visual Studio for Mac. You can deploy an Android and an iOS target at the same time to see your changes reflected on both platforms at once. To debug on multiple platforms, see:
*WindowsHow To: Set multiple startup projects
*MacSet multiple startup projectsKnown limitations
*Xamarin.Forms targets beyond Android, iOS, and UWP (for example, macOS) aren’t currently supported.
*Use of [XamlCompilation(XamlCompilationOptions.Skip)], disabling XAML compilation, isn’t supported and can cause issues with the Live Visual Tree.
*You can’t add, remove, or rename files or NuGet packages during a XAML Hot Reload session. If you add or remove a file or NuGet package, rebuild and redeploy your app to continue using XAML Hot Reload.
*Set your linker to Don’t Link or Link None for the best experience. The Link SDK only setting works most of the time, but it may fail in certain cases. Linker settings can be found in your Android and iOS build options.
*Debugging on a physical iPhone requires the interpreter to use XAML Hot Reload. To do this, open the project settings, select the iOS Build tab, and ensure Enable the Mono interpreter setting is enabled. You may need to change the Platform option at the top of the property page to iPhone.
*XAML Hot Reload can’t reload C# code, including event handlers, custom controls, page code-behind, and additional classes.TroubleshootingDownload Xamarin Android Player For Mac
*Bring up the XAML Hot Reload output to see status messages, which can help in troubleshooting:
*Windows: bring up Output with View > Output and select Xamarin Hot Reload under Show output from: at the top
*Mac: hover over XAML Hot Reload in the status bar to show that pad
*If XAML Hot Reload fails to initialize:
*Update your Xamarin.Forms version.
*Ensure you are on the latest version of the IDE.
*Set your Android or iOS Linker settings to Don’t Link in the project’s build settings.
*If nothing happens upon saving your XAML file, ensure that XAML Hot Reload is enabled in the IDE.
*If you’re debugging on a physical iPhone and your app becomes unresponsive, check that the interpreter is enabled. To turn it on, check Enable the Mono interpreter (Visual Studio 16.4/8.4 and up) or add --interpreter to the Additional mtouch arguments field (Visual Studio 16.3/8.3 and prior) in your iOS Build settings.Xamarin Android Player For Mac
To report a bug, use Help > Send Feedback > Report a Problem on Windows, and Help > Report a Problem on Mac.Install XamarinRelated links
Download here: http://gg.gg/xeuos
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