NativeProtocol.java 文件源码

public static void updateAllAvailableProtocolVersionsAsync() {
    if (!protocolVersionsAsyncUpdating.compareAndSet(false, true)) {
        return;
    }

    FacebookSdk.getExecutor().execute(new Runnable() {
        @Override
        public void run() {
            try {
                for (NativeAppInfo appInfo : facebookAppInfoList) {
                    appInfo.fetchAvailableVersions(true);
                }
            } finally {
                protocolVersionsAsyncUpdating.set(false);
            }
        }
    });
}