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Background

Platform-Agnostic

• "Introduction to Bluetooth Low Energy" by Adafruit.

Android-Specific

• "Android Lollipop: Bluetooth LE Matures" (video).
• "Bluetooth (LE) with Dave (devunwired) Smith" (podcast).

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if (typeof($) === "undefined") {
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nisrulz

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

• A Russian translation of this article can be found here, contributed by Timur Demin.
• A Turkish translation can be found here, contributed by agyild.
• There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

nisrulz

1. Create Custom TextView.

public class TextViewDrawable extends android.support.v7.widget.AppCompatTextView {

    public TextViewDrawable(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }


    /**

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private fun isInternetAvailable(): Boolean {
    return try {
        val timeoutMs = 1500
        val sock = Socket()
        val sockaddr = InetSocketAddress("8.8.8.8", 53)

        sock.connect(sockaddr, timeoutMs)
        sock.close()

        true

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git switch --orphan <new branch>
git commit --allow-empty -m "Initial commit on orphan branch"
git push -u origin <new branch>

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The following allows you to very easily flip between languages and country on Android.

This will IMMEDIATELY cause the change without even needing to shut down the target testing app.
(That is, the currently displayed page will reloaded.)

You first need to install this APP on the phone:
https://play.google.com/store/apps/details?id=net.sanapeli.adbchangelanguage&hl=en

Then to flip copy and paste one of the lines below in a terminal. 

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Kotlin Synthetics for View is deprecated

Find the files where you are using Kotlin Synthetics

Run this command at the root of your project

grep -rwl . -e 'kotlinx.android.synthetic'

• -r = Recursive
• -w = Match the whole word

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Signing in Android

• Using ENV vars

Inside your ~/.zshrc or ~/.bashrc file

Note: For CI, declare key-value pair under secrets section

export KEYSTORE_FILE_PATH = "/Users/your_user/App_Directory/keystore_file.keystore"
export KEYSTORE_PASSWORD = "********"
export KEY_ALIAS = "key_alias"

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#!/usr/bin/env bash

rm -rf ~/Library/Caches/JetBrains/IdeaIC202*

echo Done!