fix(ios): The getAudioRoutes changes the selected audio route react-native-webrtc#540

Author: rcidt

ios/RNCallKeep/RNCallKeep.m

@@ -505,6 +505,21 @@ + (void)setup:(NSDictionary *)options {
         }
 
         NSArray *ports = [RNCallKeep getAudioInputs];
+
+        BOOL isCategorySetted = [myAudioSession setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionAllowBluetooth error:&err];
+        if (!isCategorySetted)
+        {
+            NSLog(@"[RNCallKeep][setAudioRoute] setCategory failed");
+            [NSException raise:@"setCategory failed" format:@"error: %@", err];
+        }
+
+        BOOL isCategoryActivated = [myAudioSession setActive:YES error:&err];
+        if (!isCategoryActivated)
+        {
+            NSLog(@"[RNCallKeep][setAudioRoute] setActive failed");
+            [NSException raise:@"setActive failed" format:@"error: %@", err];
+        }
+
         for (AVAudioSessionPortDescription *port in ports) {
             if ([port.portName isEqualToString:inputName]) {
                 BOOL isSetted = [myAudioSession setPreferredInput:(AVAudioSessionPortDescription *)port error:&err];
@@ -570,20 +585,6 @@ + (NSArray *) getAudioInputs
 
     AVAudioSession* myAudioSession = [AVAudioSession sharedInstance];
 
-    BOOL isCategorySetted = [myAudioSession setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionAllowBluetooth error:&err];
-    if (!isCategorySetted)
-    {
-        NSLog(@"[RNCallKeep][getAudioInputs] setCategory failed");
-        [NSException raise:@"setCategory failed" format:@"error: %@", err];
-    }
-
-    BOOL isCategoryActivated = [myAudioSession setActive:YES error:&err];
-    if (!isCategoryActivated)
-    {
-        NSLog(@"[RNCallKeep][getAudioInputs] setActive failed");
-        [NSException raise:@"setActive failed" format:@"error: %@", err];
-    }
-
     NSArray *inputs = [myAudioSession availableInputs];
     return inputs;
 }