Debug package suffix and ability to override Gradle variables (#920)

* Debug package suffix and ability to override Gradle variables
- now debug builds will have '.debug' suffix by default. It allows to have multiple app builds (debug and release) on the same device. If you don't need this, create a file local.properties and add `application_id_suffix=` into it
- now everyone can override some variables from top-level build.gradle file. For example, gradle_plugin_version, debuggable manifest attribute, and so on. Overriding Gradle plugin version is useful for those who uses Intellij IDEA with older Gradle plugin than in Android Studio

* Prevent socket name conflict from different packages

* Configurable app name for debug build. By default it's SimpleX Debug

* Changed defaults in build.gradle

apps/android/.gitignore

@@ -9,6 +9,7 @@
 /.idea/assetWizardSettings.xml
 /.idea/deploymentTargetDropDown.xml
 /.idea/misc.xml
+/.idea/uiDesigner.xml
 .DS_Store
 /build
 /captures

apps/android/app/build.gradle

@@ -26,9 +26,18 @@ android {
                 cppFlags ''
             }
         }
+        manifestPlaceholders.app_name = "@string/app_name"
+        manifestPlaceholders.provider_authorities = "chat.simplex.app.provider"
     }
 
     buildTypes {
+        debug {
+            applicationIdSuffix "$application_id_suffix"
+            debuggable new Boolean("$enable_debuggable")
+            manifestPlaceholders.app_name = "$app_name"
+            // Provider can't be the same for different apps on the same device
+            manifestPlaceholders.provider_authorities = "chat.simplex.app${application_id_suffix}.provider"
+        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

apps/android/app/src/main/AndroidManifest.xml

@@ -25,7 +25,7 @@
       android:name="SimplexApp"
       android:allowBackup="true"
       android:icon="@mipmap/icon"
-      android:label="@string/app_name"
+      android:label="${app_name}"
       android:supportsRtl="true"
       android:theme="@style/Theme.SimpleX">
 
@@ -34,7 +34,7 @@
         android:name=".MainActivity"
         android:launchMode="singleTask"
         android:exported="true"
-        android:label="@string/app_name"
+        android:label="${app_name}"
         android:windowSoftInputMode="adjustResize"
         android:theme="@style/Theme.SimpleX">
       <intent-filter>
@@ -66,9 +66,7 @@
 
     <activity-alias
         android:name=".MainActivity_default"
-        android:launchMode="singleTask"
         android:exported="true"
-        android:label="@string/app_name"
         android:icon="@mipmap/icon"
         android:enabled="true"
         android:targetActivity=".MainActivity">
@@ -80,9 +78,7 @@
 
     <activity-alias
         android:name=".MainActivity_dark_blue"
-        android:launchMode="singleTask"
         android:exported="true"
-        android:label="@string/app_name"
         android:icon="@mipmap/icon_dark_blue"
         android:enabled="false"
         android:targetActivity=".MainActivity">
@@ -98,7 +94,7 @@
 
     <provider
         android:name="androidx.core.content.FileProvider"
-        android:authorities="chat.simplex.app.provider"
+        android:authorities="${provider_authorities}"
         android:exported="false"
         android:grantUriPermissions="true">
       <meta-data

apps/android/app/src/main/java/chat/simplex/app/SimplexApp.kt

@@ -84,7 +84,7 @@ class SimplexApp: Application(), LifecycleEventObserver {
     lateinit var context: SimplexApp private set
 
     init {
-      val socketName = "local.socket.address.listen.native.cmd2"
+      val socketName = BuildConfig.APPLICATION_ID + ".local.socket.address.listen.native.cmd2"
       val s = Semaphore(0)
       thread(name="stdout/stderr pipe") {
         Log.d(TAG, "starting server")

apps/android/build.gradle

@@ -1,14 +1,33 @@
 buildscript {
+    Properties localProperties = new Properties()
+    if (rootProject.file('local.properties').canRead()) {
+        localProperties.load(rootProject.file("local.properties").newDataInputStream())
+    }
+
     ext {
-        compose_version = '1.2.0-beta02'
+        compose_version = localProperties['compose_version'] ?: '1.2.0-beta02'
+        kotlin_version = localProperties['kotlin_version'] ?: '1.6.21'
+        gradle_plugin_version = localProperties['gradle_plugin_version'] ?: '7.2.0'
+
+        // Name that will be shown for debug build. By default it is from strings
+        app_name = localProperties['app_name'] ?: "@string/app_name"
+        // Whether the app is debuggable or not. Specify `false` if you want good performance in debug builds
+        enable_debuggable = localProperties['debuggable'] ?: true
+        // Ending part of package name.
+        // Provide, for example, `application_id_suffix=.debug` in local.properties
+        // to allow debug & release versions to coexist
+        application_id_suffix = localProperties['application_id_suffix'] ?: ''
+
+        // NOTE: If you need a different version of something, provide it in `local.properties`
+        // like so: compose_version=123, or gradle_plugin_version=1.2.3, etc
     }
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.21"
+        classpath "com.android.tools.build:gradle:$gradle_plugin_version"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-serialization:1.3.2"
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -16,10 +35,10 @@ buildscript {
     }
 }// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.2.0' apply false
-    id 'com.android.library' version '7.2.0' apply false
-    id 'org.jetbrains.kotlin.android' version '1.6.21' apply false
-    id 'org.jetbrains.kotlin.plugin.serialization' version '1.6.21'
+    id 'com.android.application' version "$gradle_plugin_version" apply false
+    id 'com.android.library' version "$gradle_plugin_version" apply false
+    id 'org.jetbrains.kotlin.android' version "$kotlin_version" apply false
+    id 'org.jetbrains.kotlin.plugin.serialization' version "$kotlin_version"
 }
 
 task clean(type: Delete) {