feat: Android signing config (demo keystore optional) + keystore.properties.example

.gitignore

@@ -8,3 +8,5 @@ local.properties
 captures/
 .externalNativeBuild/
 .cxx/
+keystore.properties
+keystore/

app/build.gradle

@@ -1,6 +1,13 @@
 plugins {
     id 'com.android.application'
 }
+
+def keystorePropertiesFile = rootProject.file("keystore.properties")
+def keystoreProperties = new Properties()
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
+
 android {
     namespace 'com.dshwatch.app'
     compileSdk 34
@@ -11,17 +18,43 @@ android {
         versionCode 1
         versionName "0.1.0"
     }
+    signingConfigs {
+        if (keystorePropertiesFile.exists()) {
+            debug {
+                storeFile file(keystoreProperties['debug.store.file'])
+                storePassword keystoreProperties['debug.store.password']
+                keyAlias keystoreProperties['debug.key.alias']
+                keyPassword keystoreProperties['debug.key.password']
+            }
+            release {
+                storeFile file(keystoreProperties['release.store.file'])
+                storePassword keystoreProperties['release.store.password']
+                keyAlias keystoreProperties['release.key.alias']
+                keyPassword keystoreProperties['release.key.password']
+            }
+        }
+    }
     buildTypes {
         release {
             minifyEnabled false
+            if (keystorePropertiesFile.exists()) {
+                signingConfig signingConfigs.release
+            }
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
+        debug {
+            minifyEnabled false
+            if (keystorePropertiesFile.exists()) {
+                signingConfig signingConfigs.debug
+            }
+        }
     }
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_17
         targetCompatibility JavaVersion.VERSION_17
     }
 }
+
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
     implementation 'androidx.appcompat:appcompat:1.6.1'

keystore.properties.example

@@ -0,0 +1,12 @@
+# Fill these and copy to keystore.properties (NOT committed)
+# debug sign
+debug.store.file=../keystore/keystore.jks
+debug.store.password=REPLACE_MEwearable
+debug.key.alias=REPLACE_MEwearable
+debug.key.password=REPLACE_MEwearable
+
+# release sign
+release.store.file=../keystore/keystore.jks
+release.store.password=REPLACE_MEwearable
+release.key.alias=REPLACE_MEwearable
+release.key.password=REPLACE_MEwearable