[JAVA] Watson Assistant (formerly Conversation) on Android

gradle settings For android studio Add the following to gradle (App.module)

implementation 'com.ibm.watson.developer_cloud:android-sdk:0.5.0'
implementation 'com.ibm.watson.developer_cloud:java-sdk:6.14.0'

0.5.0 seems to work without it.

Since there is communication, please add the following to AndroidManifest.xml. <uses-permission android:name="android.permission.INTERNET" />

For simplicity, synchronous communication is used, so a NetworkOnMainThreadException should be issued before the communication process. To avoid it, add the following description.

if (android.os.Build.VERSION.SDK_INT > 9) {
    StrictMode.ThreadPolicy policy = 
        new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);
}

Watson Assistant has v1 and v2. The API used for each is different. First, check which version you want to use on the settings screen. The following is an explanation when operating with v1.

[API Key] Authentication is a little confusing. It seems that it used to authenticate with username and password, but now the specification has changed to IAM and it authenticates with API key. You can configure watson from the IBM Cloud dashboard, and you can find your IAM key on the target service (Assistant) configuration page. We will use this key to authenticate, so if someone else uses it, your account may be charged.

[EndPoint] EndPoint is used as a set with the IAM key. It is a URI to access, but in the case of Assitant, there are multiple candidates. If you don't know, you can check it on the settings page. If the server is Washington DC https://gateway-wdc.watsonplatform.net/assistant/api It will be.

[WorkSpace] I had a hard time finding this no matter where I looked for it. In IBM hands-on, it is supposed to be described on the setting page, but that column is missing on the current page and can not be confirmed. Go to Create a skill-> Target Instance to launch the tool that configures the Assistant's conversation. ~~ The WorkSpace ID is hidden in the URI on the browser at that time. It is located in ~ workspaces / here / build ~. ~~ Addendum: I was able to confirm it with the 3-point dot-> View API Detail on the upper right of the frame of each skill on the screen for selecting the created skill. </ font>

private static final String WORKSPACE_ID = "";
private static final String IAM_Key = "";
private static final String URI = "";

~Omission~

String sendMessage = "Hello";  //String to send to Watson
IamOptions iamOptions = new IamOptions.Builder().apiKey(IAM_Key).build();
Assistant service = new Assistant("2018-09-20", iamOptions);
service.setEndPoint(URI);

InputData input = new InputData.Builder(sendMessage).build();

MessageOptions options = new MessageOptions.Builder(WORKSPACE_ID)
  .input(input)
  .build();

MessageResponse response = service.message(options).execute();

System.out.println(response);

Context watsonContext = response.getContext();  //And receive

MessageOptions options;
if(watsonContext != null) {
    options = new MessageOptions.Builder(WORKSPACE_ID)
      .input(input)
      .context(watsonContext)  //Pass to the next request
      .build();
}else{
    options = new MessageOptions.Builder(WORKSPACE_ID)
    .input(input)
    .build();
}
MessageResponse response = watsonAssistant.message(options).execute();
watsonContext = response.getContext();