Changed video player to use the application audio session by default.…

… This ends up playing nicer with other audio sources in the app so that they don't interrupt each other. This is configurable with the display property ios.useApplicationAudioSession='false'.

Ports/iOSPort/nativeSources/IOSNative.m

@@ -2505,6 +2505,23 @@ void com_codename1_impl_ios_IOSNative_blockCopyPaste___boolean(CN1_THREAD_STATE_
 
 }
 
+BOOL cn1UseApplicationAudioSessionForMedia(CN1_THREAD_STATE_SINGLE_ARG) {
+    enteringNativeAllocations();
+    JAVA_OBJECT d = com_codename1_ui_Display_getInstance__(CN1_THREAD_GET_STATE_PASS_SINGLE_ARG);
+    JAVA_OBJECT key = fromNSString(CN1_THREAD_GET_STATE_PASS_ARG @"ios.useApplicationAudioSession");
+
+    JAVA_OBJECT defaultVal = fromNSString(CN1_THREAD_GET_STATE_PASS_ARG @"true");
+
+    JAVA_OBJECT res = com_codename1_ui_Display_getProperty___java_lang_String_java_lang_String_R_java_lang_String(CN1_THREAD_GET_STATE_PASS_ARG d, key, defaultVal);
+    finishedNativeAllocations();
+
+    NSString *nsres = toNSString(CN1_THREAD_GET_STATE_PASS_ARG res);
+    if ([nsres isEqualToString:@"false"]) {
+        return NO;
+    }
+    return YES;
+}
+
 JAVA_LONG com_codename1_impl_ios_IOSNative_createVideoComponent___java_lang_String_int(CN1_THREAD_STATE_MULTI_ARG JAVA_OBJECT instanceObject, JAVA_OBJECT str, JAVA_INT onCompletionCallbackId) {
     __block MPMoviePlayerController* moviePlayerInstance;
     dispatch_sync(dispatch_get_main_queue(), ^{
@@ -2518,7 +2535,7 @@ JAVA_LONG com_codename1_impl_ios_IOSNative_createVideoComponent___java_lang_Stri
         }
         moviePlayerInstance = [[MPMoviePlayerController alloc] initWithContentURL:u];
         registerVideoCallback(CN1_THREAD_GET_STATE_PASS_ARG moviePlayerInstance, onCompletionCallbackId);
-        moviePlayerInstance.useApplicationAudioSession = NO;
+        moviePlayerInstance.useApplicationAudioSession = cn1UseApplicationAudioSessionForMedia(CN1_THREAD_GET_STATE_PASS_SINGLE_ARG);
         // prepareToPlay will cause other av sessions to be interrupted at the time that the video
         // component is created - which is disruptive.  Better to just let it prepare to play
         // at the time that the video is played - even if there is a delay.
@@ -2584,7 +2601,7 @@ JAVA_LONG com_codename1_impl_ios_IOSNative_createVideoComponent___byte_1ARRAY_in
 
         moviePlayerInstance = [[MPMoviePlayerController alloc] initWithContentURL:u];
         registerVideoCallback(CN1_THREAD_GET_STATE_PASS_ARG moviePlayerInstance, onCompletionCallbackId);
-        moviePlayerInstance.useApplicationAudioSession = NO;
+        moviePlayerInstance.useApplicationAudioSession = cn1UseApplicationAudioSessionForMedia(CN1_THREAD_GET_STATE_PASS_SINGLE_ARG);
         // prepareToPlay will cause other av sessions to be interrupted at the time that the video
         // component is created - which is disruptive.  Better to just let it prepare to play
         // at the time that the video is played - even if there is a delay.
@@ -2648,7 +2665,7 @@ JAVA_LONG com_codename1_impl_ios_IOSNative_createVideoComponentNSData___long_int
 
         moviePlayerInstance = [[MPMoviePlayerController alloc] initWithContentURL:u];
         registerVideoCallback(CN1_THREAD_GET_STATE_PASS_ARG moviePlayerInstance, onCompletionCallbackId);
-        moviePlayerInstance.useApplicationAudioSession = NO;
+        moviePlayerInstance.useApplicationAudioSession = cn1UseApplicationAudioSessionForMedia(CN1_THREAD_GET_STATE_PASS_SINGLE_ARG);
 //#ifndef CN1_USE_ARC
 //        [moviePlayerInstance retain];
 //#endif