Add all the application files

README.md

@@ -1,2 +1,27 @@
-# discreet-launcher
-Coming soon
+# Discreet Launcher
+
+Enjoy a clean home screen while accessing everything in an instant!
+
+![ApplicationIcon](app/src/main/res/mipmap-hdpi/ic_launcher_round.png)
+
+**Available soon !**
+
+Discreet Launcher provides you a distraction-free home screen, allowing you to fully enjoy your
+wallpaper (only the status and navigation bars have been kept for convenience).
+
+From this clean home screen, simply slide your finger down to display your favorites applications
+or up to see the complete list of applications.
+
+Both for speed and to limit battery usage, the list of installed applications is fetched only when
+Discreet Launcher starts. You can refresh it at any time from the menu, for example if a newly
+installed application does not appear.
+
+Discreet Launcher is open source, doesn't require any unnecessary permission, works completely
+offline and doesn't include any advertisements.
+
+## Screenshots
+
+![Screenshot1](fastlane/metadata/android/en-US/images/phoneScreenshots/1.png)
+![Screenshot2](fastlane/metadata/android/en-US/images/phoneScreenshots/2.png)
+![Screenshot3](fastlane/metadata/android/en-US/images/phoneScreenshots/3.png)
+![Screenshot4](fastlane/metadata/android/en-US/images/phoneScreenshots/4.png)

app/build.gradle

@@ -0,0 +1,50 @@
+// Apply the Android plugin to Gradle and make the "android" block available
+apply plugin: 'com.android.application'
+
+// Build options
+android
+{
+    // API level used to compile the application
+    compileSdkVersion 30
+    buildToolsVersion "30.0.2"
+
+    defaultConfig
+    {
+        // Application identifier
+        applicationId "com.vincent_falzon.discreetlauncher"
+
+        // Minimum API required and API used for compilation
+        minSdkVersion 21
+        targetSdkVersion 30
+
+        // Versioning
+        versionCode 1
+        versionName "v1.0.0"
+    }
+
+    // Build types always includes debug (hidden by default)
+    buildTypes
+    {
+        debug
+        {
+            // Allow usage of the version name in XML
+            resValue "string", "app_version", "${defaultConfig.versionName}.dbg"
+        }
+        release
+        {
+            // Enable code shrinking, obfuscation and optimization to lower APK size
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+
+            // Allow usage of the version name in XML
+            resValue "string", "app_version", "${defaultConfig.versionName}"
+        }
+    }
+}
+
+// External requirements
+dependencies
+{
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,29 @@
+# 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
+
+# Shrink and obfuscate only Android libraries
+-keep class com.vincent_falzon.discreetlauncher.*
+{
+    <fields> ;
+    <init>() ;
+    <methods> ;
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.vincent_falzon.discreetlauncher">
+
+    <!-- Required for Android 11+ (<queries> not applicable for Launcher applications) -->
+    <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
+        tools:ignore="QueryAllPackagesPermission" />
+
+	<application
+		android:allowBackup="false"
+		android:icon="@mipmap/ic_launcher"
+		android:label="@string/app_name"
+		android:roundIcon="@mipmap/ic_launcher_round"
+		android:supportsRtl="true"
+		android:theme="@style/AppTheme">
+
+		<activity
+				android:name=".ActivityMain"
+				android:label="@string/app_name"
+				android:launchMode="singleTask"
+				android:excludeFromRecents="true">
+			<intent-filter>
+				<action android:name="android.intent.action.MAIN" />
+
+				<category android:name="android.intent.category.LAUNCHER" />
+				<category android:name="android.intent.category.HOME" />
+				<category android:name="android.intent.category.DEFAULT" />
+			</intent-filter>
+		</activity>
+
+		<activity
+			android:name=".ActivityDrawer"
+			android:label="@string/drawer_activity_title"
+			android:parentActivityName=".ActivityMain"
+			android:excludeFromRecents="true"/>
+
+	</application>
+
+</manifest>

app/src/main/java/com/vincent_falzon/discreetlauncher/ActivityDrawer.java

@@ -0,0 +1,113 @@
+package com.vincent_falzon.discreetlauncher;
+
+// License
+/*
+
+	This file is part of Discreet Launcher.
+
+	Copyright (C) 2019-2021 Vincent Falzon
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+// Imports
+import android.os.Bundle ;
+import androidx.annotation.NonNull ;
+import androidx.appcompat.app.AppCompatActivity ;
+import androidx.recyclerview.widget.GridLayoutManager ;
+import androidx.recyclerview.widget.RecyclerView ;
+import android.widget.TextView ;
+
+/**
+ * Applications drawer activity.
+ */
+public class ActivityDrawer extends AppCompatActivity
+{
+	// Attributes
+	private GridLayoutManager layoutManager ;
+	private int position ;
+	private int last_position ;
+
+
+	/**
+	 * Constructor.
+	 * @param savedInstanceState To retrieve the context
+	 */
+	@Override
+	protected void onCreate(Bundle savedInstanceState)
+	{
+		// Call the constructor of the parent class
+		super.onCreate(savedInstanceState) ;
+
+		// Initializations
+		setContentView(R.layout.activity_drawer) ;
+		RecyclerView recycler = findViewById(R.id.applications_list) ;
+		layoutManager = new GridLayoutManager(this, 4) ;
+
+		// Indicate the last time the applications list was updated
+		String text = getResources().getString(R.string.text_applications_list_last_update) + " " + ActivityMain.getListLastUpdate() + ")" ;
+		TextView lastUpdateDateTime = findViewById(R.id.last_update_datetime) ;
+		lastUpdateDateTime.setText(text) ;
+
+		// Follow the scrolling position to detect when it is stuck on top
+		position = 0 ;
+		last_position = -1 ;
+		recycler.addOnScrollListener(new RecyclerView.OnScrollListener()
+			{
+				/**
+				 * When the scrolling ends, check if it is stuck on top.
+				 * @param recyclerView Scrolled RecyclerView
+				 * @param newState 0 (Not scrolling), 1 (Active scrolling) or 2 (Scrolling inerty)
+				 */
+				@Override
+				public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState)
+				{
+					// Let the parent actions be performed
+					super.onScrollStateChanged(recyclerView, newState) ;
+
+					// Wait for the gesture to be finished
+					if(newState == RecyclerView.SCROLL_STATE_IDLE)
+						{
+							// If the scrolling is stuck on top, close the drawer activity
+							if((position == 0) && (last_position == 0)) finish() ;
+
+							// Update the last position to detect the stuck state
+							last_position = position ;
+						}
+				}
+
+
+				/**
+				 * Update the position of the first visible item as the user is scrolling.
+				 * @param recyclerView Scrolled RecyclerView
+				 * @param dx Horizontal distance
+				 * @param dy Vertical distance
+				 */
+				@Override
+				public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy)
+				{
+					// Let the parent actions be performed
+					super.onScrolled(recyclerView, dx, dy) ;
+
+					// Update the position of the first visible item
+					position = layoutManager.findFirstCompletelyVisibleItemPosition() ;
+				}
+			}) ;
+
+		// Display the applications list
+		recycler.setAdapter(new RecyclerAdapter(this, false)) ;
+		recycler.setLayoutManager(layoutManager) ;
+	}
+}