Is there a shorter way of doing this, maybe with sealed classes? Android Dev

---

• Is there a shorter way of doing this, maybe with sealed classes?
• In-App Reviews API on Kids app
• Is there something you can pass into a Room query 'where' clause that returns all results?
• What's the best practice for doing a network operation off the main thread?
• changing name of airplane mode

Is there a shorter way of doing this, maybe with sealed classes? Posted: 30 May 2022 08:09 PM PDT I need an Optional where the 'None' string representation is "", and the 'Something' string representation is its stored value. I also need to be able to get back to that Optional from the string representation (reification if you will.) Tests to demonstrate usage of what I cooked up below. class OptionalFilterTest { @Test fun checkOptionalFilters() { assertEquals(Filtered("male").value, "male") assertEquals(NoFilter().value, "") assertTrue(OptionalFilter.reify("") is NoFilter) assertTrue (OptionalFilter.reify("female") is Filtered) assertEquals (OptionalFilter.reify("female").value, "female") } } Wondering if there is a way to do this with less code, or with something built into Kotlin. I confess to not really being able to grok sealed classes. ``` abstract class OptionalFilter { abstract val value: String companion object { fun reify(filter:String): OptionalFilter { if (filter == "") { return NoFilter() } else { return Filtered(filter) } } } } data class Filtered(val filter: String) : OptionalFilter() { override val value = filter } // a little awkward that this is not also a data class? class NoFilter : OptionalFilter() { override val value = "" } ``` submitted by /u/Place-Wide [link] [comments]

In-App Reviews API on Kids app Posted: 30 May 2022 05:16 PM PDT Does anyone know if it is okay to use the In-App Reviews API on a "Designed for Families" app, or does it need to be behind some type of parental wall? I have searched high and low for this answer and can't find anything. submitted by /u/factfoundry [link] [comments]

Is there something you can pass into a Room query 'where' clause that returns all results? Posted: 30 May 2022 04:45 PM PDT If I have a Room Dao query like so: @Query("select * from foo where type=:type and origin=:origin") fun foo(type: String?, origin: String?): DataSource.Factory<Int, Foo> Is there something I can pass in as type or origin where the effect would be that I didn't have that where clause? Something like '*'? Would null do it? foo(null, "barney") would be the equivalent of select * from foo where origin = 'barney' // no where type=... clause submitted by /u/Place-Wide [link] [comments]

What's the best practice for doing a network operation off the main thread? Posted: 30 May 2022 04:33 PM PDT I have a for loop that has a line of code that does a network operation. I need to run this network operation off the main thread. How should I go about this? The rest of the body in the for loop is dependent on the line of code with the network operation so I would also probably need to move the other code in the for loop with the network operation code line. submitted by /u/techsavvynerd91 [link] [comments]

changing name of airplane mode Posted: 30 May 2022 05:18 PM PDT I've got a Google Pixel 5a w/ 5G, with the latest version of Android 12 and dev mode enabled, I'm trying to see if theresa way to change the name of Airplane Mode to something else. A joke with a friend calls it "Shabbat Mode" and I was trying to see if theres a way to change it to that instead of Airplane Mode submitted by /u/KingLego2006 [link] [comments]

You are subscribed to email updates from Developing Android Apps. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States