Fix iOS example

CHANGELOG.md

@@ -1,8 +1,9 @@
 # Unreleased
 
-- ALSA(process_output): pass `silent=true` to `PCM.try_recover`, so it doesn't write to stderr
-- WASAPI: Expose IMMDevice from WASAPI host Device.
+- ALSA(process_output): pass `silent=true` to `PCM.try_recover`, so it doesn't write to stderr.
 - CoreAudio: `Device::supported_configs` now returns a single element containing the available sample rate range when all elements have the same `mMinimum` and `mMaximum` values (which is the most common case).
+- iOS: Fix example by properly activating audio session.
+- WASAPI: Expose IMMDevice from WASAPI host Device.
 
 # Version 0.16.0 (2025-06-07)
 

examples/ios-feedback/ios-src/AppDelegate.m

@@ -22,25 +22,29 @@ @implementation AppDelegate
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // Override point for customization after application launch.
 
-    NSError *error;
-    BOOL success;
-
     // It is necessary to access the sharedInstance so that calls to AudioSessionGetProperty
     // will work.
     AVAudioSession *session = AVAudioSession.sharedInstance;
     // Setting up the category is not necessary, but generally advised.
     // Since this demo records and plays, lets use AVAudioSessionCategoryPlayAndRecord.
     // Also default to speaker as defaulting to the phone earpiece would be unusual.
     // Allowing bluetooth should direct audio to your bluetooth headset.
-    success = [session setCategory:AVAudioSessionCategoryPlayAndRecord
-                       withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionAllowBluetooth
-                             error:&error];
-
-    if (success) {
-        NSLog(@"Calling rust_ios_main()");
-        rust_ios_main();
+    NSError *categoryError = nil;
+    BOOL isSetCategorySuccess = [session setCategory:AVAudioSessionCategoryPlayAndRecord
+                                         withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionAllowBluetooth
+                                               error:&categoryError];
+    if (isSetCategorySuccess) {
+        NSError *activateError = nil;
+        BOOL isActivateSuccess = [session setActive:YES error:&activateError];
+
+        if (isActivateSuccess) {
+            NSLog(@"Calling rust_ios_main()");
+            rust_ios_main();
+        } else {
+            NSLog(@"Failed to activate audio session: %@", activateError);
+        }
     } else {
-        NSLog(@"Failed to configure audio session category");
+        NSLog(@"Failed to set category: %@", categoryError);
     }
 
     return YES;