ReactiveLiveData | Transformation functions for LiveData | Android Architecture library

 by   musichin Kotlin Version: 1.0.1 License: MIT

kandi X-RAY | ReactiveLiveData Summary

kandi X-RAY | ReactiveLiveData Summary

ReactiveLiveData is a Kotlin library typically used in Architecture, Android Architecture applications. ReactiveLiveData has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Transformation functions for LiveData

            kandi-support Support

              ReactiveLiveData has a low active ecosystem.
              It has 81 star(s) with 3 fork(s). There are 2 watchers for this library.
              It had no major release in the last 12 months.
              There are 0 open issues and 2 have been closed. On average issues are closed in 238 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of ReactiveLiveData is 1.0.1

            kandi-Quality Quality

              ReactiveLiveData has no bugs reported.

            kandi-Security Security

              ReactiveLiveData has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              ReactiveLiveData is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              ReactiveLiveData releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            ReactiveLiveData Key Features

            No Key Features are available at this moment for ReactiveLiveData.

            ReactiveLiveData Examples and Code Snippets

            No Code Snippets are available at this moment for ReactiveLiveData.

            Community Discussions


            Correct way to pass events back from a view in Android
            Asked 2022-Mar-26 at 20:45

            I've been following the UI architecture laid out in this article which essentially amounts to this:

            It works great, but there is no example given in the article of how to pass events back from the UI elements to the ViewModel (in the case of an onclick event for example).

            I have the following code in my MainActivity:



            Answered 2022-Mar-26 at 18:20

            It gets into it further down in the section on unidirectional data flow - or there's a separate article on events (you're looking at the overview page)

            This is the example they use:



            The better way of Error Handling In Android
            Asked 2021-Feb-18 at 07:21

            Let's say I have this architecture in my app

            My question is when is the best time to handle the error?

            1. Should I let the network source and cache source throw an error, and we handle all the possible error in the repository layer
            2. Should I handle the error in the framework-specific, and return a sealed class that present is the network call error or success


            Answered 2021-Feb-18 at 07:21

            Depends on the use case

            • If user is expecting data, then you need to send the errors all the way to your UI to notify user to make sure user won't just see a blank screen or experience unexpected UI. You can sealed classes in Kotlin for this case.
            • If you are fetching something which user is not aware of, like syncing data from remote to Local cache in background, In cases like this user is not aware/ do not care about errors, your app should handle. Ideal way is to check in handle error in repository, if something fails, retrying it there or fetching data from alternate source etc.
            • Third case would be handling at multiple levels, say you are fetching data from network, it failed, you can handle retry logic in repository level and after you exhaust your retry attempts but still it is failing then you need to acknowledge user as he might be expecting some thing to show up.



            Best way to pass data needed for a later (not following) fragment?
            Asked 2020-Dec-09 at 07:12

            I have an application that needs to collect some data before doing it's main job. So, the first fragment collects data, the second fragment collects data and then the third fragment uses the data. The problem is: data in the first fragment is uncorrelated to the data I collect in the second fragment. How can I pass the data from the first fragment to the third? Should I incrementally pass all the data I collect in the next fragment arguments, or should I store them elsewhere? I'd really like to know what the best practice is.

            explicative image

            I won't use a database, since I don't need to permanently store the data. Thank you!



            Answered 2020-Nov-30 at 10:01

            As for any best practices, the best answer is "it depends".

            If your app is really small and simple then it's okay to pass data from one screen to another in the arguments bundle.

            A more complex approach is to store data somewhere outside of these Fragment lifecycles. It's a general rule you can implement as you want. A couple of examples below:

            • Data can be stored on Application class level. Application class runs for all application lifecycle. Every fragment can get Application instance from its activity like activity?.getApplication().
            • Data can be stored on Activity level if all fragments run in a single activity. Activity can be obtained from Fragment using activity or requireActivity().
            • Data can be stored on a parent fragment level if all fragments run in this parent fragment. It can be obtained from child fragments using parentFragment.

            All these approaches suppose you to cast some "parent" thing to specific interface or implementation. For example, if your fragments run in the MainActivity which is stores some val data: Data as its property, then you should use it something like this: (requireActivity() as MainActivity).data

            Clarification on a couple of popular answers:

            • The Shared ViewModel is just a special case of activity-level approach as ViewModel instance is stored in Activity scope.
            • The SharedPrefrences like any "database" approach is a special case of application-level approach as SharedPreferences is stored on application-level (in the file storage) no matter where you create its instance. (And SharedPreferences persists data across application starts, so it's not your option)



            How to use livedata in an MVVM architecture
            Asked 2020-Jan-18 at 19:55

            TLDR: How could I properly implement an MVVM architecture with LiveData?

            I have a fragment class that observe a viewModel exposed livedata:

            viewModel.loginResultLiveData.observe ...


            Answered 2020-Jan-18 at 00:46

            You are trying to observe a mutable LiveData that is only initialized after the onClickListener so you won't get it to work, also you have a lateinit property that is only initialized if you call the login method which will throw an exception.

            To solve your problem you can have a MediatorLiveData that will observe your other live data and pass the result back to your fragment observer.

            You can try the following:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install ReactiveLiveData

            You can download it from GitHub.


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