Fix Android build and update SDK in README

.github/workflows/android-play-store.yml

@@ -57,11 +57,48 @@ jobs:
 
       - name: Restore signing keystore
         shell: bash
+        env:
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
         run: |
-          echo "${{ secrets.ANDROID_KEYSTORE_BASE64 }}" \
-            | base64 --decode > "$RUNNER_TEMP/release.jks"
+          if [[ -z "$ANDROID_KEYSTORE_BASE64" ]]; then
+            echo "ANDROID_KEYSTORE_BASE64 secret is missing or empty." >&2
+            exit 1
+          fi
+
+          echo "$ANDROID_KEYSTORE_BASE64" | base64 --decode > "$RUNNER_TEMP/release.jks"
+
+          if [[ ! -s "$RUNNER_TEMP/release.jks" ]]; then
+            echo "Decoded Android keystore is missing or empty." >&2
+            exit 1
+          fi
 
           echo "KEYSTORE_FILE=$RUNNER_TEMP/release.jks" >> "$GITHUB_ENV"
+
+      - name: Validate Android signing config
+        env:
+          KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+        shell: bash
+        run: |
+          if [[ -z "$KEYSTORE_PASSWORD" || -z "$KEY_ALIAS" || -z "$KEY_PASSWORD" ]]; then
+            echo "One or more Android signing secrets are missing: ANDROID_KEYSTORE_PASSWORD, ANDROID_KEY_ALIAS, ANDROID_KEY_PASSWORD." >&2
+            exit 1
+          fi
+
+          keytool -list \
+            -keystore "$KEYSTORE_FILE" \
+            -storepass "$KEYSTORE_PASSWORD" \
+            -alias "$KEY_ALIAS" \
+            >/dev/null
+
+          keytool -certreq \
+            -keystore "$KEYSTORE_FILE" \
+            -storepass "$KEYSTORE_PASSWORD" \
+            -alias "$KEY_ALIAS" \
+            -keypass "$KEY_PASSWORD" \
+            -file "$RUNNER_TEMP/android-signing-cert-request.pem" \
+            >/dev/null
 
       - name: Export lib info
         run: |

README.md

@@ -1,9 +1,40 @@
-# SpaceView
-Display all Meetings for your room on a Display from your Nextcloud RoomVox Instance
+<br/>
+<div
+    style="
+        display: flex;
+        gap: 20px;
+        align-items:
+        center;
+        justify-content: center
+    ">
+    <img src="./docs/images/app-icon.png" width="125"/>
+    <p style="font-size: 48px; font-weight: 500;">SpaceView</p>
+</div>
+<br/>
+
+Display all Meetings for your room on a Display, Spaceview supports Nextcloud RoomVox and iCal Calendars. Also you have some options to customize Spaceview.
+
+## Calendar Providers
+We support currently the following calendar providers:
+- iCal (.ics)
+- Nextcloud Roomvox
+- ~~Google Workspace (planed)~~
+- ~~Outlook (planed)~~
+
+## Customization
+You can add a logo, change the background image and change the acent color. If you use a Nextcloud Provider, you can automaticaly use your default images and color from your Server Theme.\
+You can also add your own images to the app to use them.
 
 ## Development
 
+### Run local
+View the instructions in [KOTLIN.md](KOTLIN.md)
+
 ### Change Version
+#### GitHub Action
+The version will be set automatically from the realease tag.
+
+#### Local
 Open the [gradle.properties](gradle.properties) file and change the following values:
 - `app.version`: for the global App Version (1.0.0)
 - `android.versionCode`: for the Android Build number (needs to be counted +1 for every Play Store Build)

androidApp/build.gradle.kts

@@ -14,10 +14,10 @@ val keyAliasEnv = System.getenv("KEY_ALIAS")
 val keyPassword = System.getenv("KEY_PASSWORD")
 
 val hasSigningConfig =
-    keystoreFile != null &&
-    keystorePassword != null &&
-    keyAliasEnv != null &&
-    keyPassword != null
+    !keystoreFile.isNullOrBlank() &&
+    !keystorePassword.isNullOrBlank() &&
+    !keyAliasEnv.isNullOrBlank() &&
+    !keyPassword.isNullOrBlank()
 
 kotlin {
     compilerOptions {
@@ -53,7 +53,15 @@ android {
     if (hasSigningConfig) {
         signingConfigs {
             create("release") {
-                storeFile = file(keystoreFile!!)
+                val resolvedKeystoreFile = file(keystoreFile!!)
+                require(resolvedKeystoreFile.isFile) {
+                    "Release signing keystore was not found at: ${resolvedKeystoreFile.absolutePath}"
+                }
+                require(resolvedKeystoreFile.length() > 0) {
+                    "Release signing keystore is empty: ${resolvedKeystoreFile.absolutePath}"
+                }
+
+                storeFile = resolvedKeystoreFile
                 storePassword = keystorePassword
                 keyAlias = keyAliasEnv
                 keyPassword = keyPassword
@@ -84,4 +92,4 @@ android {
     buildFeatures {
         compose = true
     }
-}
+}

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
-agp = "9.0.1"
-android-compileSdk = "36"
+agp = "9.1.1"
+android-compileSdk = "37"
 android-minSdk = "24"
-android-targetSdk = "36"
+android-targetSdk = "37"
 androidx-activity = "1.13.0"
 androidx-appcompat = "1.7.1"
 androidx-core = "1.19.0"
@@ -20,7 +20,7 @@ ktor = "3.3.0"
 material3 = "1.11.0-alpha07"
 multiplatform-settings = "1.3.0"
 buildkonfig = "0.17.1"
-aboutLibraries = "14.2.1"
+aboutLibraries = "15.2.0"
 kotlin-wrappers = "2026.8.4"
 
 [libraries]

gradle/wrapper/gradle-wrapper.properties

@@ -1,8 +1,8 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=a17ddd85a26b6a7f5ddb71ff8b05fc5104c0202c6e64782429790c933686c806
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
+distributionSha256Sum=b266d5ff6b90eada6dc3b20cb090e3731302e553a27c5d3e4df1f0d76beaff06
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
+zipStorePath=wrapper/dists