feat(samples): Distinguish debug and release builds of the Android sample

Give the Android sample a `.debug` application id suffix and a
"Sentry Sample Debug" launcher label so debug and release builds can be
installed side by side and told apart on the home screen. Add a build
type badge (DEBUG/RELEASE) under the Sentry logo in the navigation rail
so the running build is visible inside the app too.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: runningcode

sentry-samples/sentry-samples-android/build.gradle.kts

@@ -111,15 +111,29 @@ android {
 
   buildTypes {
     getByName("debug") {
-      addManifestPlaceholders(mapOf("sentryDebug" to true, "sentryEnvironment" to "debug"))
+      // Suffix the id so debug and release builds can be installed side by side.
+      applicationIdSuffix = ".debug"
+      addManifestPlaceholders(
+        mapOf(
+          "sentryDebug" to true,
+          "sentryEnvironment" to "debug",
+          "appName" to "Sentry Sample Debug",
+        )
+      )
     }
     getByName("release") {
       isMinifyEnabled = true
       proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
       signingConfig = signingConfigs.getByName("debug") // to be able to run release mode
       isShrinkResources = true
 
-      addManifestPlaceholders(mapOf("sentryDebug" to false, "sentryEnvironment" to "release"))
+      addManifestPlaceholders(
+        mapOf(
+          "sentryDebug" to false,
+          "sentryEnvironment" to "release",
+          "appName" to "Sentry Sample",
+        )
+      )
     }
   }
 

sentry-samples/sentry-samples-android/src/main/AndroidManifest.xml

@@ -25,7 +25,7 @@
   <application
     android:name=".MyApplication"
     android:icon="@mipmap/ic_launcher"
-    android:label="@string/app_name"
+    android:label="${appName}"
     android:networkSecurityConfig="@xml/network"
     android:roundIcon="@mipmap/ic_launcher_round"
     android:theme="@style/AppTheme"

sentry-samples/sentry-samples-android/src/main/java/io/sentry/samples/android/MainActivity.kt

@@ -246,6 +246,15 @@ fun CategoryNavigationRail(
           .padding(12.dp)
           .rotate(rotation.value),
     )
+    Spacer(Modifier.height(8.dp))
+    Text(
+      text = if (BuildConfig.DEBUG) "DEBUG" else "RELEASE",
+      style = MaterialTheme.typography.labelSmall,
+      fontWeight = FontWeight.Bold,
+      color =
+        if (BuildConfig.DEBUG) MaterialTheme.colorScheme.error
+        else MaterialTheme.colorScheme.primary,
+    )
     Spacer(Modifier.height(16.dp))
     Category.entries.forEach { category ->
       NavigationRailItem(

sentry-samples/sentry-samples-android/src/main/res/values/strings.xml

@@ -1,5 +1,4 @@
 <resources>
-  <string name="app_name">Sentry sample</string>
   <string name="crash_from_java">Crash from Java (UncaughtException)</string>
   <string name="out_of_memory">Out of Memory (Mulithreaded)</string>
   <string name="stack_overflow">Stack Overflow</string>