Fix widgets crash + fix small typo

Fixes #1178

application/resources/build.gradle

@@ -11,7 +11,7 @@ android {
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        buildConfigField "String", "APP_ID", "\"rootProject.ext.appId\""
+        buildConfigField "String", "APP_ID", "\"${rootProject.ext.appId}\""
     }
 
     buildTypes {

application/vlc-android/build.gradle

@@ -31,6 +31,7 @@ android {
         resValue "string", "build_host", hostName()
         resValue "string", "build_revision", revision()
         resValue 'string', 'tv_provider_authority', "${applicationId}.tv"
+        buildConfigField "String", "APP_ID", "\"${rootProject.ext.appId}\""
 
         testInstrumentationRunner "org.videolan.vlc.MultidexTestRunner"
         // The following argument makes the Android Test Orchestrator run its
@@ -82,6 +83,7 @@ android {
         }
         debug {
             buildConfigField "boolean", "BETA", "false"
+            buildConfigField "String", "APP_ID", "\"${rootProject.ext.appId}.debug\""
         }
         signedRelease {
             initWith release

application/vlc-android/src/org/videolan/vlc/widget/VLCAppWidgetProvider.kt

@@ -61,7 +61,7 @@ abstract class VLCAppWidgetProvider : AppWidgetProvider() {
         onReceive(context, Intent(ACTION_WIDGET_INIT))
 
         /* ask a refresh from the service if there is one */
-        context.sendBroadcast(Intent(ACTION_WIDGET_INIT).setPackage(BuildConfig.APPLICATION_ID))
+        context.sendBroadcast(Intent(ACTION_WIDGET_INIT).setPackage(BuildConfig.APP_ID))
     }
 
     @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
@@ -72,7 +72,7 @@ abstract class VLCAppWidgetProvider : AppWidgetProvider() {
             return
         }
 
-        val views = RemoteViews(BuildConfig.APPLICATION_ID, getlayout())
+        val views = RemoteViews(BuildConfig.APP_ID, getlayout())
         val partial = ACTION_WIDGET_INIT != action
 
         if (!partial) {