Push poc usable app

.gitignore

@@ -0,0 +1,10 @@
+*.iml
+.gradle
+/local.properties
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+.idea/**

README.md

@@ -0,0 +1,17 @@
+# Firetv volume control
+
+In POC(Proof of concept) state - using it in my current fire tv lite, feel free to try it out
+
+This is a second draft, first draft was without UI
+
+## Usage:
+
+Install apk and then grant below permissions from adb
+
+1. To be able to listen to key presses on remote
+2. To be able to show the volume controls UI
+
+```shell
+adb shell settings put secure enabled_accessibility_services com.example.volumecontrolservice/com.example.volumecontrolservice.AccessibilityService
+adb shell appops set com.example.volumecontrolservice  SYSTEM_ALERT_WINDOW allow
+```

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,29 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.example.volumecontrolservice'
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.volumecontrolservice"
+        minSdk 21
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.leanback:leanback:1.0.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/main/AndroidManifest.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
+
+    <uses-permission
+        android:name="android.permission.INTERNAL_SYSTEM_WINDOW"
+        tools:ignore="ProtectedPermissions" />
+    <application
+        android:allowBackup="false"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.VolumeControlService" >
+
+        <service
+            android:exported="true"
+            android:name=".AccessibilityService"
+            android:label="Volume control service"
+            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
+            <intent-filter>
+                <action android:name="android.accessibilityservice.AccessibilityService" />
+            </intent-filter>
+            <meta-data
+                android:name="android.accessibilityservice"
+                android:resource="@xml/accessibility_service" />
+        </service>
+    </application>
+
+</manifest>

app/src/main/java/com/example/volumecontrolservice/AccessibilityService.java

@@ -0,0 +1,164 @@
+package com.example.volumecontrolservice;
+
+import static android.media.AudioManager.STREAM_MUSIC;
+import static android.view.KeyEvent.ACTION_DOWN;
+import static android.view.KeyEvent.ACTION_UP;
+import static android.view.KeyEvent.KEYCODE_DPAD_CENTER;
+import static android.view.KeyEvent.KEYCODE_DPAD_DOWN;
+import static android.view.KeyEvent.KEYCODE_DPAD_LEFT;
+import static android.view.KeyEvent.KEYCODE_DPAD_RIGHT;
+import static android.view.KeyEvent.KEYCODE_DPAD_UP;
+import static android.widget.Toast.LENGTH_SHORT;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.media.AudioManager;
+import android.os.Build;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.Window;
+import android.view.WindowManager;
+import android.view.accessibility.AccessibilityEvent;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+public class AccessibilityService extends android.accessibilityservice.AccessibilityService {
+    // settings put secure enabled_accessibility_services com.example.volumecontrolservice/com.example.volumecontrolservice.AccessibilityService
+    private static final String TAG = "yolo volume_control";
+    private static final long DELAY_VOLUME_LONG_PRESS = 100;
+    private Handler mLongPressHandler;
+    private AudioManager audioManager;
+    private boolean eatLongPressActionUp;
+
+    @Override
+    protected void onServiceConnected() {
+        super.onServiceConnected();
+        Log.i(TAG, "service is connected");
+        audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
+    }
+
+    @Override
+    public void onAccessibilityEvent(AccessibilityEvent accessibilityEvent) { }
+
+    @Override
+    public void onInterrupt() {
+
+    }
+
+    @Override
+    protected boolean onKeyEvent(KeyEvent event) {
+        return handleKeyEvent(event);
+    }
+
+    private boolean handleKeyEvent(KeyEvent event) {
+        int action = event.getAction();
+        int keyCode = event.getKeyCode();
+        if (keyCode == KEYCODE_DPAD_CENTER) {
+            switch (action) {
+                case ACTION_DOWN:
+                    Log.i(TAG, "yolo dpad center is down ");
+                    checkForLongPress();
+                    return false;
+                case ACTION_UP:
+                    if(mLongPressHandler !=null ) mLongPressHandler.removeCallbacksAndMessages(null);
+                    if(eatLongPressActionUp){
+                        eatLongPressActionUp = false;
+                        return true;
+                    }
+                    return false;
+            }
+        }
+        return false;
+    }
+
+    private void checkForLongPress() {
+        if (mLongPressHandler == null) {
+            mLongPressHandler = new Handler();
+        }
+        else {
+            // this shouldn't be happening, down event coming before previous up event is processed
+            mLongPressHandler.removeCallbacksAndMessages(null);
+            mLongPressHandler = new Handler();
+        }
+
+        mLongPressHandler.postDelayed(() -> mLongPressHandler.postDelayed(() -> {
+//            Toast.makeText(this, "Adjust volume then press okay to resume", LENGTH_SHORT).show();
+            Log.i(TAG, "ready to adjust volume");
+            showDialog();
+            eatLongPressActionUp = true;
+        }, DELAY_VOLUME_LONG_PRESS), DELAY_VOLUME_LONG_PRESS);
+    }
+
+    private void showDialog() {
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+            final boolean overlayEnabled = Settings.canDrawOverlays(this);
+            if(!overlayEnabled){
+                Toast.makeText(this, "Enable draw over apps permission", LENGTH_SHORT).show();
+            }
+            Log.i(TAG, "overlay: " + overlayEnabled);
+            if (!overlayEnabled) return;
+        }
+
+        new Handler(Looper.getMainLooper()).post(() -> {
+
+            final Dialog dialog = new Dialog(AccessibilityService.this);
+            dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
+            dialog.setContentView(R.layout.volume_control);
+            dialog.getWindow().setBackgroundDrawableResource(android.R.color.background_dark);
+            dialog.setCancelable(true);
+            ProgressBar volumeProgress = dialog.findViewById(R.id.volume_progress);
+            dialog.findViewById(R.id.close).setOnClickListener(v -> dialog.cancel());
+            volumeProgress.setMax(audioManager.getStreamMaxVolume(STREAM_MUSIC));
+            volumeProgress.setProgress(audioManager.getStreamVolume(STREAM_MUSIC));
+            dialog.setOnKeyListener((dialog1, keyCode, event) -> {
+                int action = event.getAction();
+                if (keyCode == KEYCODE_DPAD_LEFT || keyCode == KEYCODE_DPAD_DOWN) {
+                    switch (action) {
+                        case ACTION_DOWN:
+                            Log.i(TAG, "yolo dpad down or left is pressed");
+                            reduceVolume();
+                            volumeProgress.setProgress(audioManager.getStreamVolume(STREAM_MUSIC));
+                            return true;
+                        case ACTION_UP:
+                            return true;
+                    }
+                }
+
+                if (keyCode == KEYCODE_DPAD_RIGHT || keyCode == KEYCODE_DPAD_UP) {
+                    switch (action) {
+                        case ACTION_DOWN:
+                            Log.i(TAG, "yolo dpad up or right is pressed");
+                            increaseVolume();
+                            volumeProgress.setProgress(audioManager.getStreamVolume(STREAM_MUSIC));
+                            return true;
+                        case ACTION_UP:
+                            return true;
+                    }
+                }
+
+                return false;
+            });
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY);
+            }else{
+                dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
+            }
+
+            dialog.show();
+        });
+    }
+
+    private void increaseVolume() {
+        Log.i(TAG, "yolo, increasing volume");
+        audioManager.adjustStreamVolume(STREAM_MUSIC, AudioManager.ADJUST_RAISE, 0);
+    }
+
+    private void reduceVolume() {
+        Log.i(TAG, "yolo, reducing volume");
+        audioManager.adjustStreamVolume(STREAM_MUSIC, AudioManager.ADJUST_LOWER, 0);
+    }
+}

app/src/main/res/layout/volume_control.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:padding="20dp"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content">
+    <TextView
+        android:layout_alignParentTop="true"
+        android:id="@+id/text"
+        android:text="Volume:"
+        android:layout_centerVertical="true"
+        android:textColor="@color/lb_tv_white"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+    <ProgressBar
+        android:id="@+id/volume_progress"
+        android:layout_marginStart="30dp"
+        android:layout_centerVertical="true"
+        android:layout_toEndOf="@id/text"
+        style="@android:style/Widget.ProgressBar.Horizontal"
+        android:progress="50"
+        android:layout_width="200dp"
+        android:layout_height="10dp" />
+    <Button
+        android:layout_alignParentEnd="true"
+        android:layout_marginStart="30dp"
+        android:id="@+id/close"
+        android:text="Close"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+</RelativeLayout>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">VolumeControlService</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,4 @@
+<resources>
+
+    <style name="Theme.VolumeControlService" parent="@style/Theme.Leanback" />
+</resources>

app/src/main/res/xml/accessibility_service.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/app_name"
+    android:canRequestFilterKeyEvents="true"
+    android:accessibilityFlags="flagRequestFilterKeyEvents"/>

build.gradle

@@ -0,0 +1,5 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    id 'com.android.application' version '7.3.1' apply false
+    id 'com.android.library' version '7.3.1' apply false
+}

gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sun Aug 06 01:20:14 IST 2023
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME