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    Android Dev - The Complete Android Kotlin Developer Course

    March 21, 2021

    Android Dev - The Complete Android Kotlin Developer Course

    The Complete Android Kotlin Developer Course

    Posted: 21 Mar 2021 07:12 AM PDT

    Android Lint API Guide

    Posted: 21 Mar 2021 08:21 AM PDT

    I'm thinking of creating a free Android mentorship program

    Posted: 20 Mar 2021 11:54 AM PDT

    Hi,

    I'm thinking of creating a free Android mentorship program for people who want to start from scratch learning Kotlin & Android. ( I have around 6 years of Android experience )

    How would it work?

    • Accept 1 - 2 people into the program.
    • 1 hour every two weeks with each of them to check in about progress
    • Asynchronous problem-solving. Probably chat.
    • Require each of them to document their progress. ( Ex: write a blog post every week or two weeks about their journey )

    Curriculum: Kotlin, Android, Version Control, and probably move into architecture and building real apps.

    Length: 6 or 12 months

    Goal: Find a Junior Android developer role.

    What would I get: Building an audience. Looking into creating a community of mobile developers.

    What PROs/CONs do you see?

    Thanks

    submitted by /u/dragosivanov
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    Google is preparing for Fuchsia's first releases

    Posted: 20 Mar 2021 05:50 AM PDT

    Is filtering app review against google play policy? like prompting a user "Do you like the app" if yes, redirect to ur playstore page if no, do nothing/back/show a form?

    Posted: 21 Mar 2021 06:42 AM PDT

    Ads webview in native android app

    Posted: 21 Mar 2021 02:56 AM PDT

    I have a native Android app and plan to use a webview to show a banner ads (300x250) from an ad network. They don't have SDK so this is the only way to show their ads.

    I'm not sure if this comply with Google policy. I'm worried they will suspend my app. Is there anyone tried this before ?

    Thanks in advance.

    submitted by /u/davbin
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    App Ideas using cloud firestore or realtime database as backend

    Posted: 21 Mar 2021 06:40 AM PDT

    I am interested in developing apps using cloud firestore or realtime database & like to know what kind of apps benefits from the advantages of using these databases than MySQL.

    submitted by /u/jaroos_
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    My doubt about View related stuff.

    Posted: 21 Mar 2021 06:22 AM PDT

    I'm a uni student, and I'm creating a game as a hobby in the semesters I'm not working with android. Last semester I worked a bit with android and I had to create 2 apps and here is where comes my doubt. So about the view, what´s the better choice to deal with the view? In the game activity or to get a class to deal with the view stuff? The two apps I made, one of them I dealt with it on the activity and the other I got a class for the view. I wanted to know what's the pros and cons of each one.

    ​

    Thank you. :)

    submitted by /u/afonso18
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    How can I extract API calls from APK files?

    Posted: 21 Mar 2021 05:36 AM PDT

    I am working on an android malware analysis project using python, is there a way to extract api calls from the APK?

    If not, is there a ready APK dataset with api calls (preferably more than 10000 samples)

    Edit: I found a library called apk-parser but it only extracts permissions and activities among other things

    submitted by /u/Psycho__Gamer
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    Java Android Dev

    Posted: 21 Mar 2021 05:16 AM PDT

    Hi! I am a beginner in the programming world. I know the basics of web development and PHP, a little bit of Python and React Native. But I want to develop Android apps using Java. I've learned the OOP, so Abstraction, Interfaces and so on. I was asking, what is the next step in order to start developing Android apps? And what should I know to code the UI of my application?

    submitted by /u/Agreeable-Painting90
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    Do apps that get images from the backend normally send different image files depending on the device pixel density and screen size?

    Posted: 20 Mar 2021 05:01 PM PDT

    *fetch different image files

    I have a social media app that needs to get images from the backend and display them. My understanding is that these images will look different on different screen densities (not sure if that's true of screen sizes also), so I am thinking of having the app fetch a different image file depending on the type of device.

    So, for example, a low density device would fetch the file /imageofpolarbears_ldpi.png and a high density device would fetch the file /imageofpolarbears_hdpi.png

    Is this how most apps do it? I know I can just download the highest density file on all devices and scale it down when loading the bitmap, but that seems inefficient. Why download and cache large files on low density devices when they'll never be used?

    submitted by /u/These_Trust3199
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    News Aggregator

    Posted: 20 Mar 2021 05:09 PM PDT

    I have a little question that confuses me in a project, if I create a generic web scraper (title, description, date published, video, image) that can be herited and customized based on any alike news website. And after that, classify the news articles by topic.

    How can I build an API that exposes the scraped data? And if I need to create an android mobile app that implements that API, do I will need to code something or I will just need to implement the same API?

    submitted by /u/crazy_pets_lady
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    Location tracking using Bluetooth and sensors, without GPS in Android?

    Posted: 20 Mar 2021 01:14 PM PDT

    Working on an Android app that will help people locate themselves and navigate inside big buildings.

    I need to find a way to show the user's position on the building map as accurately as possible. So far the plan is to use some Bluetooth beacons that are installed on each floor, but that's far from enough as the distance between the phone and Bluetooth beacon can have an error anywhere between 50 cm and a few dozen meters (!)

    So the question is, what else can I use to improve the accuracy of the position that I show on the building map? Nowadays, the Android phones have a lot of sensors, maybe the accelerometer, gyroscope, or something else could help me? What are your thoughts on this?

    submitted by /u/i-am-mesh
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    Clear Cache encrypted disk?

    Posted: 20 Mar 2021 04:32 PM PDT

    Can I clear cache an encrypted disk at boot, and be able to login ?

    Note 3

    submitted by /u/redditusermazafaka
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    TileService crashes randomly when trying to open a dialog from an onClick callback

    Posted: 20 Mar 2021 12:51 PM PDT

    Hi! I have an application running in production where the TileService in quick settings is a feature that is used often. I have noticed there's random crashes when the tile service attempts to call the showDialog function. I spent weeks trying to debug and trace the cause of it and ultimately i found that showDialog is causing the crash. Is this a bug in the android framework? I have found an issue similar to mine but there has been not an update for the last few years.

    https://issuetracker.google.com/issues/37105965

    android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@a0402d4 is not valid; is your activity running? at android.view.ViewRootImpl.setView(ViewRootImpl.java:1068) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:409) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:109) at android.app.Dialog.show(Dialog.java:340) at android.service.quicksettings.TileService.showDialog(TileService.java:273) at onClick(NotificationTileService.kt:49) at android.service.quicksettings.TileService$H.handleMessage(TileService.java:449) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java:7656) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
    submitted by /u/lishengg
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    Location Services

    Posted: 20 Mar 2021 11:49 AM PDT

    Every time I implement anything involving location in an app, it comes with a whole bunch of permission requests, callbacks etc. I wanted to create a Utility file that encompasses all that logic but there are Activity and fragment contexts that I can't figure out how to implement outside of the Fragment or Activities themselves. Has anyone made this easier? Am I just dumb and missing something? It just seems like wayyyy more boilerplate than necessary. Thanks in advance!

    submitted by /u/swiggatron
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    Sys design fragment manager

    Posted: 20 Mar 2021 10:02 AM PDT

    How would you go about this? I was asked to come up with a design for a navigation manager and i had no idea where to even begin

    submitted by /u/rickityrixkityrick
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