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    Sunday, February 9, 2020

    How many downloads / users did you get when you launched your app (stories please). Android Dev

    How many downloads / users did you get when you launched your app (stories please). Android Dev


    How many downloads / users did you get when you launched your app (stories please).

    Posted: 09 Feb 2020 10:48 AM PST

    I'm trying to decide how we should prioritize shipping our app in the Android app store.

    I think part of the challenge is that some apps explode, but other apps sort of don't really get much distribution.

    I'd like to figure out WHY some apps explode and others don't.

    I have some theories:

    • some apps leverage trends (either deliberately or accidentally) and then they show up #1 for some key search terms.

    • some apps already have a large user base, just not an app, so when they email their users they get a HUGE explosion of initial downloads.

    • some people just PPC their app to the top and then they end up showing up in the trending section. I think this would work but probably costs a fair amount of $$... just not sure how much.

    Would love to hear some real world stories of how you got your app to take off.

    submitted by /u/brainhack3r
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    A simple DIY library to generate your own custom Calendar View using RecyclerView, written in Kotlin

    Posted: 09 Feb 2020 12:53 AM PST

    Learning iOS as an Android developer

    Posted: 09 Feb 2020 05:25 AM PST

    I have been developing for Android for the past 3 years and would like to dive into the iOS market.

    I know that there's a lot of Swift and iOS tutorials on the internet, but what I'm looking for are those with comparisons to Android development. For example a tutorial saying the equivalent for Android stuff : "A view in android is ___ in iOS"

    Anyone know of a good one?

    submitted by /u/chain217
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    Best way to explain required permissions to users so they don't get freaked out?

    Posted: 09 Feb 2020 09:39 AM PST

    I have an app that needs notification access so I explain why to the user and then navigate them to the permissions page to activate it. But based on my analytics only about 80-85% of people grant the permission. I assume its because they are paranoid of spying on their data. Whats the best way to explain to the users that its safe?

    submitted by /u/Xstream3
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    has anyone made a game recently? i have question about OAuth consent

    Posted: 09 Feb 2020 01:21 PM PST

    Has anyone here made an android game recently? My game uses google play services (for leaderboard), and i've made 2 games before no problem. But i just updated one of my games and now its telling me i need to do this OAuth consent screen verification. i'm filling out the page, but it requires me to have a homepage URL, and a privacy policy URL, wtf ? What if i don't have a website? It won't let me continue submitting the form without entering a url.

    submitted by /u/betamaximus128
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    What should Function graphics represent when publishing an app?

    Posted: 09 Feb 2020 12:59 PM PST

    KitKat and TLSv1.2

    Posted: 09 Feb 2020 03:28 AM PST

    Is eCPM model (Facebook Audience network) better than CPC(Admob) for Tier-1 countries?

    Posted: 09 Feb 2020 02:11 PM PST

    So from September 19, Admob started paying me the worst CPC rate $0.06/click from USA (as if some flip was switched and my earnings started dropping like bird poop). As I was using mediation, I disabled Admob since then and completely moved to Audience network. But I'm not sure if CPC model would be better for Tier 1 countries or eCPM, and I'm unable to figure out because I'm not finding latest data regarding Admob.

    Here's what I made using Facebook Audience network in a day:

    • Interstitial

    Country Impressions eCPM Clicks Revenue
    USA 1524 $13.87 14 $21
    UK 360 $10.56 8 $4
    Germany 337 $8.55 6 $3
    Canada 182 $10.29 4 $2
    Others X X 27 $4

    • Banner

    Country Impressions eCPM Clicks Revenue
    All 31,211 $0.19 40 $5.93

    Fill rate is around 80% for Interstitial and 82% for Banner.

    So basically with 59 clicks on Interstitial I made around $37 and 40 clicks on Banner around $6. How much should have I made using Admob if somehow my account started working properly?

    submitted by /u/AwkwardShake
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    Google Play NOT indexing new apps again.

    Posted: 09 Feb 2020 01:15 AM PST

    It seems the problem from November is back. Apps published from ~Jan 27 does not appear in search results. You can find them only by removing spaces in the title or changing them to underscore.

    submitted by /u/paul_s0
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    Authentication

    Posted: 09 Feb 2020 01:43 PM PST

    I'm supposed to do authentication for an app which relies on a rest api. I don't have any info about the authentication, I will be speaking to the api guys tomorrow. Are they supposed to hand me an architecture where they generate a user token? What can I expect? The resources got from the api are meant to be "checked for user permission", which would lead me to believe there should be a jwt? Never did token auth before

    submitted by /u/guv4
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    How to use ForeignKey on Room Database?

    Posted: 09 Feb 2020 08:09 AM PST

    I can't quite grasp the concept of foreign key is room.

    I want to do the following:

    I want to save a object of class "Product", which holds a reference to an already existing Product category/section.

    //product code @Entity(tableName = "product_table") public class Product { @PrimaryKey @NonNull private String name; private ProductSection category; //how exactly can you reference this? public Product(String name, ProductSection category) { this.name = name; this.category = category; } public String getName() { return name; } public ProductSection getCategory() { return category; } } //section code @Entity(tableName = "product_section_table") public class ProductSection { @PrimaryKey private String name; public ProductSection(String name) { this.name = name; } public String getName() { return name; } } 

    How exactly do i tell Room that "private ProductSection category" should reference an already persisted Category/Section object?

    submitted by /u/Crackbert
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    Can't run ads on my game

    Posted: 09 Feb 2020 08:26 AM PST

    My game's ads have been removed due to "invalid traffic concerns", even though noone really played it in that period. I'd really like to promote my game, but I won't receive any income if I can't run ads.

    Can anyone tell me what I could do, or how long it would take for them to let me run ads again?

    I left feedback and filled in my contact details, but I haven't been contacted by Google yet. Thank you!

    submitted by /u/spookyscaryskeletman
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    Help! Scrollview showing properly in Design tab but not in Emulator.

    Posted: 09 Feb 2020 03:10 PM PST

    I've been playing around with this a couple hours now and I'm not having any luck. Everything shows up more or less correct in my design tab, but once I open emulator I only see the header image of my program.

    I searched around and nothing I've found has set this straight yet. I know that the ScrollView can only have one child view (in this case a LinearLayout full of TextViews).

    My XML:

    https://pastebin.com/5fahSgDn

    My Design tab:

    https://imgur.com/a/Y19Waq7

    I've changed the height of the ScrollView to 0dp since the picture and it resolved the image and ScrollView overlapping in the Design Tab. Still nothing in Emulator aside from the image.

    Any pointers would be greatly appreciated.

    submitted by /u/AteThePrincess
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    New Mockinizer version 1.2.0 is released! New in 1.2.0: #16 Allow mocking without having to specify a body (enhancement) #17 Fix setting of mockserver port in buildconfig (bug)

    Posted: 09 Feb 2020 10:55 AM PST

    Anyone done white-boarding in Kotlin?

    Posted: 08 Feb 2020 07:46 PM PST

    I have an interview at Facebook and a few other companies coming up and I am working through the Cracking the Coding Interview book. Has anyone done white boarding at any company in Kotlin? Did you use some of the built in Kotlin utility functions (reverse, sorted, filter, map, flatmap, toCharArray()...) and if so what did you for Big O for them? Memorize them, best guess, or just implement yourself?

    Also thoughts on using ArrayDeque for both Stacks and Queue questions?

    Do you use coroutines, or just do single threaded solutions unless asked?

    And any other things to consider for Kotlin vs Java white boarding? One thing I have noticed is that white board questions seem to often have inputs/outputs as Arrays rather than Lists/MutableLists which I generally use when coding in Kotlin.

    submitted by /u/shlopman
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    MotionLayout Weird Issue

    Posted: 09 Feb 2020 02:19 PM PST

    Weird issue here using MotionLayout. I have fragment A with a start state that transitions to an end state with an onSwipe gesture. But sometimes this transition "breaks"; when I open fragment A the motion state transitions to the end state without the onSwipe gesture. I'm not able to transition back to the start state(swipe up = go to end state, swipe down = go to start state).

    This bug occurs during weird scenarios. For example, I changed the id of a view that was in a separate layout and this causes the transition to break. Or I could do something as simple as changing the background color of my splash screen and it causes the transition to break.

    I don't understand how the MotionLayout is being affected by changes that are outside its layout scope. Has anyone encountered this problem?

    submitted by /u/murray1029
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    Google and Dark Mode

    Posted: 09 Feb 2020 04:00 AM PST

    Has anybody noticed that most apps by Google e.g Keep, Play Store, Calendar, etc when switched to dark mode use colors which are way too light compared to those suggested by the Material Design page on Dark Mode

    Does anyone know why this is the case?

    submitted by /u/awesomeshark1204
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    Quick app development

    Posted: 09 Feb 2020 01:11 PM PST

    I want to make an app as quickly as possible for free, I used to code using android studio for a brief time a while ago but have forgotten pretty much everything. I was wondering whether you guys know a way I can develop an android app quickly with minimal coding? I want to make an app that can control a radio using the app which will be connected to the device via Bluetooth. It will essentially control volume, station and hopefully store some presets. I am looking for something that will create the code for the UI using a drag and drop interface.

    I'm not sure if this is the best place to post this. Any help would be appreciated.

    submitted by /u/KenseiIveMetYou
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    Me and some corpo co-workers are getting together to create a mobile app. Can you guys save me from mistakes you made yourselves?

    Posted: 09 Feb 2020 01:10 PM PST

    I work in a big multinational technological corpo, one with high prestige. And I, together with some coworkers, have reached the conclusion there's no way we're ever getting any real money in our current positions. I myself can affirm I'm a pretty darn good programmer, however I'd be lucky if I was getting 5% of the value I'm giving these fuckers.

    I have an idea for an app which I think could work, and have so far disclosed it to a couple of coworkers who I'm close with. They like it and they're willing to give it a shot.

    So here is the scenario:

    3 coworkers will dedicate their spare time to creating the full-stack of a mobile app. This app will require a solid backend and a sleek front-end. Native is definitely a must.

    I'm pretty sure this scenario has repeated itself thousands of times already, and that there are many lessons to be learned. That's what's motivating this post.

    I'd like you to WARN me about the bumps on the road ahead and the best ways to cover my back from the beginning.

    For example, I can already picture potential conflicts in the team if some of us happen to be more invested in the project than others. Assuming we're all sharing the future hypothetical benefits of this app, such situations would generate a lot of heat and soon become intolerable.

    What steps MUST we take to ensure such a project will not end up derailing?

    submitted by /u/AlvinVonDiaspar
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    I submitted a request for sold/transferred an app to client's account as per Google's rules.

    Posted: 09 Feb 2020 12:34 PM PST

    But i got no email yet, no processing or some indication. Client already gave me money for app and now he's driving me nuts. Anyone of you have experiencing with app transfer/sell? How much time it takes or do they send email prior to finally transferring app?

    submitted by /u/anxietyhub
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    Android <=Nougat locale change at runtime problem

    Posted: 09 Feb 2020 11:53 AM PST

    Having trouble updating locale at runtime with the android versions mentioned in the title.

    I've recreated small repo example of runtime locale change. Would anyone be able to help me out? Currently repo can only change locale on 25+ versions, and I wanna change locale at runtime with Nougat and lower.<3

    https://github.com/GroundZeroCro/Android-Locale-testing

    submitted by /u/QuestofTHeChosenOne
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    How to host app-ads.txt on Github Pages?

    Posted: 09 Feb 2020 12:33 AM PST

    I uploaded app-ads.txt to my Github Page: https://gmikhail.github.io/app-ads.txt

    I set my website https://gmikhail.github.io/ in Google Dev Console (Main page with apps list -> Settings -> Developer account -> Account details -> Website).

    I also tried to set the website on the app page (App control panel -> App page -> App description -> Website).

    But so far (three days have already passed) on https://apps.admob.com/v2/apps/appadstxt instead of urls are dashes is displayed.

    What am I doing wrong? Is it even possible to host app-ads.txt on Github Pages?

    submitted by /u/gmikhail
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    Firestore alternatives? Is there an 'industry standard'?

    Posted: 09 Feb 2020 02:13 AM PST

    Not familiar with databases at all, other than firebase. But I'm developing an app that would require store of data and login authentication.

    Let's the app records workouts and sorts them into subcategories.

    Using firestore, I would do something like have a document of all the login auth encrypted, each login and has a subdocument of each workout year, which has subdocument of each workout month, which holds an instance of the workout class. The workout class has various attributes, like total time, sets time of each exercise etc.

    I've made a similar app in this way for practicing development, which is why I've described it that way. While this work implement fine, I feel like this isn't the 'proper' way. Login auth seems sketchy, and firestore implementation does give alot of headaches.

    What would be the best way/service to use to go about this?

    submitted by /u/bruhsmh
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    How to capture screenshots in AndroidStudio without, capturing bottom soft buttons?

    Posted: 09 Feb 2020 02:57 AM PST

    All the while, I was able to capture screenshots in AndroidStudio + Emulator, without capturing the bottom soft buttons (Back, Home, Recent)

    I was using the bottom left camera icon button to capture screenshot - https://i.imgur.com/BrpQB03.png

    However, I'm not sure what I have done, which causes the bottom soft buttons (Back, Home, Recent) always be capture. For instance, this is one of the capture screenshot. I do not want the bottom soft buttons bar - https://i.imgur.com/fRGyTpI.png

    This is my AVD manager - https://i.imgur.com/emqPv5n.png

    Any idea how I can avoid from capturing bottom soft buttons, when I was capturing screenshots using AndroidStudio + Emulator?

    Thanks.

    submitted by /u/yccheok
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    Setting Window background to @null in XML doesn't work after night mode is toggled

    Posted: 09 Feb 2020 02:15 AM PST

    I'm using DayNight theme.

    I set the window background like this <item name="android:windowBackground">@color/window_bg</item>

    and set the colors like this in colors.xml (default) <color name="window_bg">@null</color> in colors.xml (night) <color name="window_bg">@andoid:color/black</color>

    Also, I have this thing in my Main Activity's onCreate() AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)

    And the activity declaration in the manifest is just this <activity android:name=".MainActivity" android:configChanges="orientation|keyboardHidden" android:screenOrientation="portrait">

    So, when I toggle the night mode (from quick setting tiles) from dark to light, only the window background color doesn't change. I expected the color to be white but it was black.

    submitted by /u/pavi2410
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