Checking Capabilities¶
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]];