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    Home Unlabelled Android Dev - Google will make the Android Runtime (ART) a Mainline module in Android 12

    Android Dev - Google will make the Android Runtime (ART) a Mainline module in Android 12

    November 25, 2020

    Android Dev - Google will make the Android Runtime (ART) a Mainline module in Android 12

    Google will make the Android Runtime (ART) a Mainline module in Android 12

    Posted: 25 Nov 2020 03:39 AM PST

    Where do I store a user's account info? Getting mixed answers - SharedPreferences, AccountManager, Android Keystore, SQLite?

    Posted: 24 Nov 2020 08:51 PM PST

    I've been trying to google to figure out what the best practice is to store a User's Account Info after logging in, but I'm getting so many mixed answers from SO, blogs, and reddit threads.

    Some answers from 6 years ago say use AccountManager. Some say use SharedPreferences. How about SQLite?

    As someone who is new to Android this doesn't really help me get a clearcut answer on what exactly is the best practice to do. Could someone explain the pros and cons, or what I should and shouldn't do?

    submitted by /u/HowGoodIsNateDiaz
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    Android Runtime becoming a Project Mainline module for easy updates in Android 12

    Posted: 25 Nov 2020 07:09 AM PST

    klaxit/hidden-secrets-gradle-plugin Gradle plugin to deeply hide secrets on Android

    Posted: 25 Nov 2020 02:56 AM PST

    Python application in android app

    Posted: 25 Nov 2020 07:18 AM PST

    I don't know how should I ask but back days I made a virtual assistant in python. That was code in which I designed to do some tasks using voice recognition. Now I want to put that functionality in my android application. How can I make it possible that I used that code in my own made app. Thanks for your time :)

    submitted by /u/invisible_here
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    “Magic Trick” of Galaxy App Booster

    Posted: 25 Nov 2020 07:38 AM PST

    I happened to try an app called Galaxy App Booster that is a part of Galaxy Labs released by Samsung. It claims that it can optimize all apps on device and boost the overall performance by 5% to 15%. It's attractive and many users are using it on non-Samsung phones too.

    Continue reading:

    https://bohu.medium.com/magic-trick-of-galaxy-app-booster-684e1984576e?source=friends_link&sk=b0852c6332808be84ee179397ce92d30

    submitted by /u/EvoNext
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    How to do Paging in Jetpack Compose.

    Posted: 24 Nov 2020 09:17 PM PST

    How to do Paging in Jetpack Compose.

    Jetpack Compose recently got official support for paging with the release of androidx.paging:paging-compose library which provides integration between paging 3 and jetpack compose.

    Here's an article, explaining the implementation of paging in compose with paging 3.

    https://proandroiddev.com/infinite-lists-with-paging-3-in-jetpack-compose-b095533aefe6

    ​

    https://preview.redd.it/uml04706qb161.png?width=4800&format=png&auto=webp&s=ab51ecae65fc3b23e441904594dff603af72238c

    submitted by /u/2307viveksingh
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    Deploy app on multiple device without the use of app store

    Posted: 25 Nov 2020 05:47 AM PST

    Greetings,

    Does anyone know of a way to deploy an app on multiple devices through wifi without using the app store? Kind of realized a bit late the hassle that is handling 20+ android devices for our warehouses.

    submitted by /u/Elgatee
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    Google Play Console new background permission policy

    Posted: 24 Nov 2020 10:13 PM PST

    Hi, guys I've been developing an app that requires me to track the drivers even when the app is in the background. But because we are tracking drivers we arent able to show any in-app feature of how the location is used. So in our 30-second video we show the alert telling the user we will be accessing your location so that the following features work and all.
    And Google seems to be rejecting it saying that they need to see the feature in-app in the video.
    They also wrote something like this " If your feature's functionality is not directly visible to the user, then you will need to show us its functionality in a video showing the in-app experience (e.g. notifying the user of a fraud alert). ".Does anyone know what the above sentence means?

    I'm really confused about this and was wondering if there's any way to get my app compliant with the new policy.

    submitted by /u/coder-404
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    Need help with using insidersec on macOS with Android

    Posted: 25 Nov 2020 04:15 AM PST

    Hey guys! I am new to Android and recently learnt of insider/insidersec which is an opensource project to deploy SAST tools with a bunch of different programming languages and platforms. I really want to integrate it with my Android project but am lost on how to use the CLI to install and run SAST on macOS. Has anyone done this before? Please help a rookie out!

    submitted by /u/dopeSpaghetti
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    How do Smart Cards like Blue or Mobilo launch the browser on Android phone without any reader app?

    Posted: 25 Nov 2020 03:53 AM PST

    I was going through this video demonstrating the Blue Smart Card although there are other smart cards like Mobilo who do the same task. The card uses an NFC chip and upon coming in conatct with an Android phone, it launches the url in the browser of the app.

    I am puzzled, how this is possible without having an NFC reader app or service running in the device. Usually when I need to read an NFC tag, a QR code or anything of that sort I usually open an app which can do the reading operation. So for example, for QR code I would open the camera or if it was an NFC tag I would open an NFC reader app.

    But here, it seems that there is no app open. Mobilo even says that no app required. So how is the smart card opening the url in the browser? Any ideas? Thanks!

    submitted by /u/unity_guy
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    Highlight color ints for Jetpack compose

    Posted: 24 Nov 2020 10:13 PM PST

    I made a small plugin for AS Canary (should also work with any IntelliJ based IDEs) to show color on the editor's gutter represented by androidx.compose.ui.graphics.Color

    In compose we are supposed to maintain a Color.kt file in which all color values are stored for theming purpose. This plugin will draw a small rectangle denoting the color int (similar to colors.xml).

    The plugin is open-sourced on Github. Any suggestions and code improvements are most welcome! If this was not an original idea, let me know :)

    https://github.com/KaustubhPatange/compose-color

    submitted by /u/KP_2016
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    Background services advise

    Posted: 25 Nov 2020 01:40 AM PST

    Hi all,

    We have a unusual android device and we are looking at making it a part of another system

    To do this, we are needing to write a background service which when it gets a specific intent it will do something until it gets another intent. There should be minimal user interaction.

    Essentially this is going to run on a device along side the app that the user uses and the intent should activate the built in RFID scanner module and fire back tags it sees as intents, then when it gets an intent to stop it should stop running.

    I have had a look into it and it seems that IntentService is the way to go, but it doesn't run on newer versions of Android, does anyone have and ideas of what I should look into?

    submitted by /u/Spectr3Sec
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    How long an inactive Activity will store in memory and able to restore from savedInstanceState?

    Posted: 25 Nov 2020 12:54 AM PST

    I was wondering, is there a way to know roughly how long an inactive Activity
    will stay in memory, and able to restore from savedInstanceState ?

    ​

    The reason is that, for every Activity, I am assigning them an unique uuid, to accessing temporary persistence data from DB.

    ​

    When user performs "proper" quit (By pressing back button), my system knows that the associated uuid is no longer being used, and able to clean up all associated data.

    @Override public void onPause() { super.onPause(); if (this.isFinishing()) { // Perform uuid DB clean up and all associated data. } }

    ​

    However, when user put the Activity inactive state by performing HOME button place, we cannot just remove the uuid from DB.

    ​

    As, there is a possibility that user can perform Activity restore at any time point. The uuid can be retrieved from savedInstanceState, and being reused again.

    ​

    However, we must some how clean up the DB at some time. If not, the DB just grow infinity.

    ​

    Our plan is assigning a timestamp for the uuid. Say, if the uuid is not being used within 3 days, we assume it is no longer associated with any active Activity, or any restore-able Activity. We can then safetly clear it out from DB.

    ​

    I was wondering, is there a way/ or documentation to know, how long an inactive Activity will store in memory and able to restore from savedInstanceState? With such information, we can know how long we should wait, before marking an uuid as expired.

    ​

    Thanks.

    submitted by /u/yccheok
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    Modded camera apk/app?

    Posted: 24 Nov 2020 07:08 PM PST

    Trying to create a camera app without the function / UI to read the previously taken photo. So essentially either the app itself will not have functions to read the gallery, or alternatively no UI to navigate to viewing the photos taken itself. Is there already such an apk or possibly need to make a custom camera app?

    submitted by /u/kuriciku
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    [FREE] TestProject Java SDK Tutorial

    Posted: 24 Nov 2020 08:37 PM PST

    Simple login ui

    Posted: 24 Nov 2020 07:18 PM PST

    Does something similar to iOS's scriptable widgets exists in android?

    Posted: 24 Nov 2020 08:40 AM PST

    Basically title.

    Here is an example: https://github.com/ThisIsBenny/iOS-Widgets/tree/main/Countdown

    The widgets are easy to create, just js file and pictures if needed.

    submitted by /u/DvD_cD
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    Is it possible to "create" and run an Android app entirely on Android, using AIDE?

    Posted: 24 Nov 2020 09:03 AM PST

    Hi! I'm a very broke student from Turkey. I don't have a computer and can't afford one so I have no access to Android Studio. If I learn Java, can I make an app only using my Android phone? I'm not into game development by the way. Thank you in advance. ❤️

    submitted by /u/joywoc
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