logcat

As it turns out, it is not trivial to control the audio volume of an Android device using ADB. At the time of writing, the only way appears to be using the service tool. Actually, the service command allows to "connect" to a number of services (104 on Android 6.0.1) and invoke functions. Not knowing much about this tool, I managed to completely mute all sounds and speakers of my Nexus 5, and I was stuck without any sound for quite some time. I did not find a way to unmute the sound from within the system UI, so I got to dive a little deeper into this.

If you know which service you want to use, you then need to find its interface declaration. The command

service list

gives you a list of all services with the associated interfaces, if applicable:

...

26 backup: [android.app.backup.IBackupManager]

logcat

Android Emulator (ARM64) on EC2 - 2022
---------------------------------------
1. Launch EC2 ARM based Instance (a1.metal / a1.2xlarge): (16 Gb RAM, 32Gb Disk), Ubuntu Server 22.04 LTS (HVM) ARM x64
2. sudo apt update && sudo apt upgrade
3. sudo apt install default-jdk python3-pip repo python-is-python3 unzip libpcre2-dev adb
4. wget https://dl.google.com/android/repository/commandlinetools-linux-8512546_latest.zip 
5. unzip commandlinetools-linux-8512546_latest.zip -d android-sdk
6. sudo mv android-sdk /opt/
7. mkdir /opt/android-sdk/cmdline-tools/latest
8. mv /opt/android-sdk/cmdline-tools/* /opt/android-sdk/cmdline-tools/latest  (ignore the error)

logcat

import android.app.Activity;
import android.support.annotation.Nullable;
import android.support.test.runner.lifecycle.ActivityLifecycleMonitorRegistry;

import java.util.Collection;

import static android.support.test.InstrumentationRegistry.getInstrumentation;
import static android.support.test.runner.lifecycle.Stage.RESUMED;

public final class CurrentActivityUtil {

logcat

import android.content.Context;
import android.graphics.Rect;
import android.support.v7.widget.AppCompatAutoCompleteTextView;
import android.util.AttributeSet;
import android.view.View;

public class InstantAutoCompleteTextView extends AppCompatAutoCompleteTextView {

    public InstantAutoCompleteTextView(Context context) {
        super(context);

logcat

#!/bin/sh
# License for any modification to the original (linked below):
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# Sebastiano Poggi wrote this file.  As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return.
# ----------------------------------------------------------------------------
#
# Based upon http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html

logcat

/*
 * Copyright (C) 2013 Google, 2014 Stefano Dacchille
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

logcat

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogManager;
import java.util.logging.LogRecord;
import java.util.logging.Logger;

import android.util.Log;