Fix APK installation: add signing and change package name

- Changed package ID to org.schabi.newpipe.scrolling to allow coexistence with original NewPipe
- Added signing configuration using debug keystore
- App will now appear as 'NewPipe Scrolling' on device
- Updated GitHub Actions to create keystore for CI builds

Author: Carl Miller

.github/workflows/build-release-apk.yml

@@ -24,6 +24,11 @@ jobs:
           java-version: '21'
           cache: 'gradle'
 
+      - name: "Create debug keystore for signing"
+        run: |
+          mkdir -p ~/.android
+          keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "CN=Android Debug,O=Android,C=US"
+
       - name: "Build release APK"
         run: ./gradlew assembleRelease --stacktrace
 
@@ -40,7 +45,7 @@ jobs:
 
       - name: "Rename APK"
         run: |
-          mv app/build/outputs/apk/release/*.apk "app/build/outputs/apk/release/NewPipe_v${{ steps.version.outputs.version }}.apk"
+          mv app/build/outputs/apk/release/*.apk "app/build/outputs/apk/release/NewPipeScrolling_v${{ steps.version.outputs.version }}.apk"
 
       - name: "Upload APK as artifact"
         uses: actions/upload-artifact@v4
@@ -52,16 +57,20 @@ jobs:
         uses: softprops/action-gh-release@v1
         with:
           tag_name: v${{ steps.version.outputs.version }}-${{ github.run_number }}
-          name: Release v${{ steps.version.outputs.version }}
+          name: NewPipe Scrolling v${{ steps.version.outputs.version }}
           body: |
-            ## NewPipe Release v${{ steps.version.outputs.version }}
+            ## NewPipe Scrolling v${{ steps.version.outputs.version }}
+            
+            This is a modified version of NewPipe that can be installed alongside the original app.
             
             ### New Features
             - **Hold to Fast-Forward**: Hold anywhere on the player to increase playback speed to 2x. Release to return to normal speed.
             - New setting in Video & Audio settings to enable/disable this feature.
             
-            ### Download
-            Download the APK below and install it on your Android device.
+            ### Installation
+            1. Download the APK below
+            2. Install on your Android device (enable "Install from unknown sources" if needed)
+            3. This app will appear as "NewPipe Scrolling" and can coexist with the original NewPipe
           files: app/build/outputs/apk/release/*.apk
           draft: false
           prerelease: false

app/build.gradle.kts

@@ -36,9 +36,19 @@ android {
     compileSdk = 36
     namespace = "org.schabi.newpipe"
 
+    signingConfigs {
+        create("release") {
+            // Use debug keystore for unsigned releases that can be installed
+            storeFile = file("${System.getProperty("user.home")}/.android/debug.keystore")
+            storePassword = "android"
+            keyAlias = "androiddebugkey"
+            keyPassword = "android"
+        }
+    }
+
     defaultConfig {
-        applicationId = "org.schabi.newpipe"
-        resValue("string", "app_name", "NewPipe")
+        applicationId = "org.schabi.newpipe.scrolling"
+        resValue("string", "app_name", "NewPipe Scrolling")
         minSdk = 21
         targetSdk = 35
 
@@ -72,9 +82,10 @@ android {
         }
 
         release {
+            signingConfig = signingConfigs.getByName("release")
             System.getProperty("packageSuffix")?.let { suffix ->
                 applicationIdSuffix = suffix
-                resValue("string", "app_name", "NewPipe $suffix")
+                resValue("string", "app_name", "NewPipe Scrolling $suffix")
             }
             isMinifyEnabled = true
             isShrinkResources = false // disabled to fix F-Droid"s reproducible build