[#355] Lock screen to portrait

- Adds capability to customize the screen lock via gradle.properties to enable it while developing or testing the app UI easily
- Closes #355

build.gradle.kts

@@ -103,6 +103,7 @@ tasks {
             "ZCASH_SUPPORT_EMAIL_ADDRESS" to "support@electriccoin.co",
             "IS_SECURE_SCREEN_PROTECTION_ACTIVE" to "true",
             "IS_DARK_MODE_ENABLED" to "false",
+            "IS_SCREEN_ROTATION_ENABLED" to "false",
 
             "ZCASH_DEBUG_KEYSTORE_PATH" to "",
             "ZCASH_RELEASE_KEYSTORE_PATH" to "",

gradle.properties

@@ -64,10 +64,11 @@ ZCASH_SUPPORT_EMAIL_ADDRESS=support@electriccoin.co
 # Recommended protection of screens with sensitive data.
 # It is enabled by default to protect the developers from revealing their wallet secrets by mistake.
 IS_SECURE_SCREEN_PROTECTION_ACTIVE=true
-
 # Forcibly turn on or off the UI dark mode support. If enabled, then the device's dark mode system setting value is
 # applied.
 IS_DARK_MODE_ENABLED=false
+# Set whether the screen rotation is enabled or the screen orientation is locked in the portrait mode.
+IS_SCREEN_ROTATION_ENABLED=false
 
 # Set keystore details to enable build signing.  Typically these
 # are overridden via ~/.gradle/gradle.properties to allow secure injection.

ui-lib/build.gradle.kts

@@ -64,6 +64,15 @@ androidComponents {
                 comment = "Whether is the SecureScreen sensitive data protection enabled"
             )
         )
+        // To configure screen orientation in runtime
+        variant.buildConfigFields.put(
+            "IS_SCREEN_ROTATION_ENABLED",
+            BuildConfigField(
+                type = "boolean",
+                value = project.property("IS_SCREEN_ROTATION_ENABLED").toString(),
+                comment = "Whether is the screen rotation enabled, otherwise, it's locked in the portrait mode"
+            )
+        )
     }
 }
 

ui-lib/src/main/java/co/electriccoin/zcash/ui/MainActivity.kt

@@ -1,5 +1,7 @@
 package co.electriccoin.zcash.ui
 
+import android.annotation.SuppressLint
+import android.content.pm.ActivityInfo
 import android.os.Bundle
 import android.os.SystemClock
 import androidx.activity.ComponentActivity
@@ -66,6 +68,8 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        setAllowedScreenOrientation()
+
         setupSplashScreen()
 
         setupUiContent()
@@ -73,6 +77,18 @@ class MainActivity : ComponentActivity() {
         monitorForBackgroundSync()
     }
 
+    /**
+     * Sets whether the screen rotation is enabled or screen orientation is locked in the portrait mode.
+     */
+    @SuppressLint("SourceLockedOrientationActivity")
+    private fun setAllowedScreenOrientation() {
+        requestedOrientation = if (BuildConfig.IS_SCREEN_ROTATION_ENABLED) {
+            ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
+        } else {
+            ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+        }
+    }
+
     private fun setupSplashScreen() {
         val splashScreen = installSplashScreen()
         val start = SystemClock.elapsedRealtime().milliseconds