Add check exists for access token

Author: Takayuki Otake

README.md

@@ -60,7 +60,13 @@ ApiRequest request = StudyRecordPostRequest.of(
 		.setDurationSeconds(2 * 60)
 		.build()
 );
-StudyplusApi.getClient(context).send(request);
+
+try {
+    StudyplusApi.getClient(context).send(request);
+} catch (AccessTokenNotFound e) {
+    e.printStackTrace();
+    Toast.makeText(context, "Access token not exists", Toast.LENGTH_SHORT).show();
+}
 ```
 
 ### More

SDKExample/src/main/java/jp/studyplus/android/sdk/example/ExampleActivity.java

@@ -17,6 +17,7 @@
 import jp.studyplus.android.sdk.service.api.StudyplusApi;
 import jp.studyplus.android.sdk.service.api.response.ErrorResponse;
 import jp.studyplus.android.sdk.service.api.response.SuccessfulResponse;
+import jp.studyplus.android.sdk.service.auth.AccessTokenNotFound;
 import jp.studyplus.android.sdk.service.auth.AuthTransit;
 import jp.studyplus.android.sdk.service.auth.CertificationStore;
 import jp.studyplus.android.sdk.service.studyrecord.StudyRecordBuilder;
@@ -58,7 +59,13 @@ public void onClick(View v) {
 					.setDurationSeconds(2 * 60)
 					.build());
 
-			StudyplusApi.getClient(context).send(request.with(this));
+			try {
+				StudyplusApi.getClient(context).send(request.with(this));
+			} catch (AccessTokenNotFound e) {
+				e.printStackTrace();
+				Toast.makeText(context, R.string. sample_certification_no_access_token, Toast.LENGTH_SHORT)
+						.show();
+			}
 		}
 
 		@Subscribe

SDKExample/src/main/res/values/strings.xml

@@ -4,5 +4,6 @@
     <string name="app_name">SDK Example</string>
     <string name="hello_world">Hello world!!!</string>
 
+    <string name="sample_certification_no_access_token">アクセストークンがありません。先に認証をしてください。</string>
     <string name="sample_certification_studyplus_not_found">Studyplus 2.14.0 以上のインストールが必要です。</string>
 </resources>

StudyplusAndroidSDK/src/main/java/jp/studyplus/android/sdk/service/api/StudyplusApi.java

@@ -2,6 +2,7 @@
 
 import android.content.Context;
 
+import jp.studyplus.android.sdk.service.auth.AccessTokenNotFound;
 import jp.studyplus.android.sdk.service.auth.CertificationStore;
 
 
@@ -10,7 +11,7 @@
  */
 public class StudyplusApi {
 
-	public static ApiClient getClient(Context context){
+	public static ApiClient getClient(Context context) throws AccessTokenNotFound {
 		ApiCertification certification = CertificationStore.create(context).getDefault();
 		return new ApiClient(certification);
 	}

StudyplusAndroidSDK/src/main/java/jp/studyplus/android/sdk/service/auth/CertificationStore.java

@@ -46,7 +46,7 @@ private Optional<String> findAccessToken(){
 		return Optional.fromNullable(preferences.getString(KEY_ACCESS_TOKEN, null));
 	}
 
-	public ApiCertification getDefault(){
+	public ApiCertification getDefault() throws AccessTokenNotFound {
 		Optional<String> token = findAccessToken();
 		if (!token.isPresent()){
 			throw new AccessTokenNotFound();