我正在使用 HERE 地图。我试图通过转弯导航设置语音，但我无法做到这一点。我尝试用NMAVoicePackage来设置声音，但我不知道如何设置。以下代码是我尝试的。
NMAVoiceCatalog *voiceCatalog = [NMAVoiceCatalog sharedVoiceCatalog];
NMAVoicePackage *voicepackeg=[voiceCatalog.voicePackages objectAtIndex:0];
[voiceCatalog installVoicePackage:voicepackeg]
[[NMANavigationManager sharedNavigationManager] setVoicePackage:voicepackeg];
NSError *error;
NSLog(@"starting navigation simulation");
error = [[NMANavigationManager sharedNavigationManager] startTurnByTurnNavigationWithRoute:self.route];
if(error && error.code != NMANavigationErrorNone){
NSLog(@"ERROR: failed to start simulation with error code %ld", (long)error.code);
return;
}