Setting up filters¶
When you are discovering devices you are able to specify multiple capability filters.
NSArray *videoCapabilities = @[ kMediaPlayerDisplayVideo, kMediaControlAny, kVolumeControlVolumeUpDown ]; NSArray *imageCapabilities = @[ kMediaPlayerDisplayImage ]; CapabilityFilter *videoFilter = [CapabilityFilter filterWithCapabilities:videoCapabilities]; CapabilityFilter *imageFilter = [CapabilityFilter filterWithCapabilities:imageCapabilities]; [[DiscoveryManager sharedManager] setCapabilityFilters:@[videoFilter, imageFilter]];
Any service that is found may meet the requirements of either filter but not both. When getting the UI ready if a device might have a capability you should always check before enabling that UI component.
[myImageButton setEnabled:[self.device hasCapability:kMediaPlayerDisplayImage]];