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    Friday, January 17, 2020

    Home Unlabelled Weekly "anything goes" thread! Android Dev

    Weekly "anything goes" thread! Android Dev

    5 years ago

    Weekly "anything goes" thread! Android Dev

    Weekly "anything goes" thread!

    Posted: 17 Jan 2020 04:40 AM PST

    Here's your chance to talk about whatever!

    Although if you're thinking about getting feedback on an app, you should wait until tomorrow's App Feedback thread.

    Remember that while you can talk about any topic, being a jerk is still not allowed.

    submitted by /u/AutoModerator
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    My thoughts about Google Play and policy support team after my App was suspended without any warnings

    Posted: 17 Jan 2020 09:43 AM PST

    Using MaterialDateRangePicker

    Posted: 17 Jan 2020 08:03 AM PST

    Noticed a new addition to mdc-android , the MaterialDateRangePicker. I Wrote a short article that could be useful for android developers https://hackernoon.com/how-to-use-new-material-date-picker-for-android-s7k32w0

    submitted by /u/petyr47
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    Anyone switched from React Native back to Native? Why?

    Posted: 17 Jan 2020 07:38 AM PST

    I'm debating on whether to go back to native development from React Native. Every time RN comes up with a new version I have to do a debugging session and figure out why nothing works again, and the error codes are as vague as they can be.

    Anyone else in this boat? If so, what made you switch back to native? Any caveats?

    submitted by /u/hackers-disunited
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    Now in Android

    Posted: 17 Jan 2020 04:03 AM PST

    Replace Google Play Games Multiplayer by the end of March 2020!

    Posted: 17 Jan 2020 06:33 AM PST

    As you may already know, Google is shutting down realtime multiplayer and tun-based multiplayer game services in the end f March 2020. I created a video which may help you migrate to Firebase. I'm using Realtime Database to create simple login, room creation and joining, and sending messages between devices. Enjoy!

    https://www.youtube.com/watch?v=nj-trslVFPc

    submitted by /u/yo_asakura
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    Widespread emergency mode

    Posted: 17 Jan 2020 02:45 PM PST

    I got an idea for an emergency situation from watching a video on the unfortunate Australian fires, the thing is that it cannot be made without rooting the device so I would like to suggest adding this to stock android as a system app as it would save a lot of lives so here's the idea:

    The first thing to go out in any disaster are phone lines as authorities try to avoid overloading them with many people trying to get to talk with their loved ones, that's unavoidable BUT there is an alternative that could partially restore communications in a lot of places without disruption to the main lines.

    Smartphones have a dedicated wifi antena that can be used for thetering, the idea would be to use this capability with the following steps:

    1. Turn the wifi into "promiscuous mode" where it will connect to any other wifi of the emergency line.

    2. Turn on the thetering without sharing phone data with the wifi Hotspot being called with a special key that would signal other smartphones that this its an emergency line.

    3. Create a distributed WAN carried over every smartphone connected were each phone would act as a repeater.

    4. Create a "WhatsApp" without live calls to limit the bandwidth consumed by the crowd but preserving the capability for sharing text, photos or audio files.

    5. Release special devices designed to become the only ones capable of servicing data from the main line that would be in charge of the authorities.

    6. When battery becomes low enough (say 1 hour left at current consumption) on a device it will be allowed to turn off the thetering and use only wifi.

    7. Add the capability for authorities to turn this mode on automatically in any given area in case of a disaster.

    submitted by /u/otoko_no_hito
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    What's the best way to build an APK from source on a Chromebook?

    Posted: 17 Jan 2020 10:47 AM PST

    I've developed for Android on Android devices, before, using AIDE (Android IDE), but I'm not sure if that's really viable on a Chromebook (and it's not really made for stuff like this, anyway), and I've used Android Studio (and its predecessors) on Linux and OSX , but I've never tried to compile an APK from source on a Chromebook in ChromeOS. I have a version of Linux also installed on this Chromebook but there really isn't much RAM on it, and I have a hard enough time running most things on the Linux chroot already as is, so that doesn't seem like the correct approach.

    Is compiling using the android compiler the proper approach? It seems like it wouldn't be. But I want to run the APK on Chrome using the Android emulation anyway, and all I have at my disposal is this Chromebook (I'm honestly not a fan of Chromebooks in part for reasons like how cumbersome it is to do even the smallest development tasks without a lot of emulation).

    Thanks ahead of time for the response(s).

    submitted by /u/PshPopRet
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    Coordinator layout with sticky view

    Posted: 17 Jan 2020 02:10 PM PST

    So I am going to do my best to explain this, but I have included a video of the issue as well.

    I have the following setup. Activity has a coordinatorLayout which has an AppBarLayout a frameLayout and a bottom nav.

    <CoordinatorLayout>

    <AppBarLayout>

    <FrameLayout>

    <bottomnav>

    </CoordinatorLayout>

    The FrameLayout is actually a Fragment with a tab view of other fragments in it. The tab layout has the view pager and a sticky view at the bottom.

    <TabLayout>

    <ViewPage>

    <MyStickyView>

    <TabLayout>

    This is all in a constraintLayout so the ViewPager is between the Tabs and the sticky view. The tabs fragments just have a recyclerView in them.

    Everything in the frameLayout should be positioned between the app bar and the bottom bar. When that content gets scrolled in the tab fragment, the app bar and the bottom nav should hide.

    So now on to the question. I want the sticky button to be above the bottom nav. The issue I am having is when the bottomNav is present it is above the stickyView. I need a way to force the position of the frameLayout in the coordinator layout to always between the app bar and the bottom nav.

    Video of issue https://gfycat.com/unsteadyadolescentaustraliansilkyterrier

    When I scroll you see the sticky view which has a button come up from behind the bottom nav.

    submitted by /u/w1ll1am23
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    Fluent text styling and concatenation in Android

    Posted: 17 Jan 2020 06:32 AM PST

    Emulator 29.3.6 Canary

    Posted: 17 Jan 2020 10:05 AM PST

    “��Beginner’s Guide to Bottom Navigation with Android Jetpack — Part 2”

    Posted: 17 Jan 2020 09:10 AM PST

    I just made my first MVVM app - Sun Calculator. Can I get a code review?

    Posted: 17 Jan 2020 10:57 AM PST

    https://github.com/gavingt/SunCalculator

    The app displays the sunrise/sunset times for any city/date you choose. It fetches the time zone from Google TimeZone API (in order to display the times correctly in local time), and then it fetches the sun data from https://sunrise-sunset.org/api.

    I'm sure I've made some mistakes along the way. There's no repository because I'm not storing anything. Hence, I'm doing the Retrofit calls directly from my SharedViewModel. The Fragments are perhaps doing more than they need to in some places. And I feel like I'm missing something with my implementation of Binding Adapters.

    Thanks!

    submitted by /u/GavinGT
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    Please help me understand Mediation from Admob in short

    Posted: 17 Jan 2020 10:35 AM PST

    What I've understood from the documentation that is I can create "Mediation Groups" then I can add different "Ad Providers" (20 providers are listed). I've played a little with it, and I found out that when adding a provider I need to add different auth data (some require e-mail, pass and/or API keys). It looks like I need to register on these sites in order to obtain an API Key.

    1. How do I know which provider is okay for showing interstitial ads?
    2. Who's going to pay me? Google or the 3rd party site?
    3. Are these 3rd party ad providers are paying by "impression" or by "click"? Or do I need to make a research about each of the providers? (I know that Admob is paying for both "ad view" and "ad click".)
    4. How Admob will choose what ad provider to use for showing the ads? Self (Admob) or from the mediation group?
    5. What's an eCPM "floor"? How does this works? What if I set a minimum of $99 eCPM? What's the recommended value? (Many of my users are coming from Central/Eastern Europe).
    6. How many ad providers should I add in the mediation group? (what if I add all ad providers?)
    7. Can I disable the mediation group and rollback to the previous config? (Let's say that I've really messed up something and I need to revert the changes without losing revenue and/or creating a new build).
    8. What A/B testing are you recommending in order to increase revenue (changing priorities, adding/removing ad providers)?
    9. I'm logging via Firebase the ad failures, and these are the values for the past 7 days:
      1. 50.27% (network error) (Failed because there was no internet or the user had a slow internet and the request failed?)
      2. 24.42% (internal error) (Probably as above, but there was also other issues?)
      3. 25.28% (no fill) (Admob couldn't deliver an Ad for the request?)

    So, if I'm not wrong, If I create a mediation group, and the Admob requests fails (no fill) will Admob try to obtain an ad from the mediation group? Theoretically the ad request failure should decrease if I add a mediation group.

    Thank you for your time!

    submitted by /u/leontin91
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    Recyclerview with viewholders that reproduces audio

    Posted: 17 Jan 2020 10:26 AM PST

    Hi, everyone.

    I'm developing a chat app and I'm struggling to find a way to implement a recyclerview with audio.

    The idea is that each viewholder has a audio player UI, like whatsapp and telegram has, and reproduces the audio defined in that viewholder.

    My first approach was instanciating in each viewholder a exoplayer object. I had some problems, like performance issues in the recyclerview and high usage of resources. This solution was discarded.

    Next, I builded a service to reproduce the audio, based on the UAMP project by Google, and tried to used it, synchronizing the state of the service with each viewholder on the list, but the results were not good. I cannot find a way to update the state of other viewholders, if another viewholder with audio is played.

    I'm out of ideas on how to do develop this and would like to know if one of the solutions above are somehow a way to do it or if there is a better solution for my context.

    submitted by /u/victorferrucy
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    Does Android Development suck?

    Posted: 17 Jan 2020 01:32 AM PST

    What sucks about android Development, if there's any, and how? I'm a beginner and I'm wondering if it's worth it spending time on learning and mastering android development?

    submitted by /u/LoneWalker20
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    What should a junior Android Developer learn in one year to get good salary?

    Posted: 17 Jan 2020 02:01 PM PST

    Why Android native over React Native?

    Posted: 17 Jan 2020 09:02 AM PST

    What are your reasons for developing Android apps natively versus developing them with React Native?

    submitted by /u/murray1029
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    Creating a timeout button animation

    Posted: 17 Jan 2020 05:14 AM PST

    One of the features in waze uses a sort of timeout button where if the button is not pressed for a certain duration, it times out, and proceeds with that action. Look at the 'Go now' button in this video https://gfycat.com/quarrelsomesaneguernseycow

    I am looking to create something similar for an android material components button. So far my thoughts are to create a vector path of the white outline near the perimeter of the button and animate the trimStartPath property of the vector.

    Looking for some other ideas since I have not ventured into these type of animations before

    submitted by /u/rillweed
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    Debit card Play Console

    Posted: 17 Jan 2020 07:10 AM PST

    Hey guys, I was wondering if I can use a MasterCard Debit card (N26) to pay for a Google Play developer console account. In the step before the payment it only mentioned a creditcard which I don't own.

    submitted by /u/tychoregter
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    Any custom Roms for this seicane unit?

    Posted: 17 Jan 2020 01:45 PM PST

    Kotlin - Oracle

    Posted: 17 Jan 2020 06:04 AM PST

    As someone who already study some programming languages I was looking for an updated Android development course and I started with kotlin bootcamp (Udacity) and it is taught to install Oracle jdk. After some problems (solved) I saw some people saying it is not free or it won't be free, etc. My first purpose is to make an Android app (a relatively simple idea I had) and sell it in playstore. Shouldn't I keep using Oracle products?

    submitted by /u/Behealdan
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    android direct boot access files with broken display

    Posted: 17 Jan 2020 04:44 AM PST

    i dropped my phpne into water and shortly after it it was frozen. after a hard reboot (holding the power button) the lock screen appeared but the display is not working and therefore I cannot unlock into Credential Encrypted (CE) storage (what I need to access my photos of the day, which are really important).

    is there a way to access storage without unlocking? is there a way to unlock by using a usb mouse via usb otg adapter or something like this?

    now,it seems the phone is still powered on but the display is black and I don't see anything and the buttons are not working as well.

    it is a pixel 3 (so it should has been waterproof by the way) and I think it does not support HDMI video output?

    any ideas how to get my files? if o could get it past the direct boot screen, Google photos should do it's backup which would be enough?

    copy of https://stackoverflow.com/questions/59780133/android-direct-boot-access-files-with-broken-display

    submitted by /u/hardysiim
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    Is there a Focus Mode API?

    Posted: 17 Jan 2020 04:00 AM PST

    I really like the new wellbeing - focus mode that disables certain apps. Now I was wondering if there is any way to enable/disable it programatically?

    submitted by /u/Trunksome
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