Fixed authentication UI - it will now save the token to persistent storage and the logout button deletes the stored token

app/src/main/java/uk/org/openseizuredetector/AuthenticateActivity.java

@@ -12,6 +12,7 @@ import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.LinearLayout;
+import android.widget.TextView;
 
 public class AuthenticateActivity extends AppCompatActivity implements AuthCallbackInterface {
     private String TAG = "AuthenticateActivity";
@@ -31,6 +32,11 @@ public class AuthenticateActivity extends AppCompatActivity implements AuthCallb
         cancelBtn.setOnClickListener(onCancel);
         Button OKBtn = (Button) findViewById(R.id.OKBtn);
         OKBtn.setOnClickListener(onOK);
+        Button logoutCancelBtn =
+                (Button) findViewById(R.id.logoutCancelBtn);
+        logoutCancelBtn.setOnClickListener(onCancel);
+        Button logoutBtn = (Button)findViewById(R.id.logoutBtn);
+        logoutBtn.setOnClickListener(onLogout);
 
         mUnameEt = (EditText) findViewById(R.id.username);
         mPasswdEt = (EditText) findViewById(R.id.password);
@@ -40,15 +46,15 @@ public class AuthenticateActivity extends AppCompatActivity implements AuthCallb
     @Override
     protected void onStart() {
         super.onStart();
-        switchUi();
+        updateUi();
     }
 
     public void authCallback(boolean authSuccess, String tokenStr) {
         Log.v(TAG,"authCallback");
-        switchUi();
+        updateUi();
     }
 
-    private void switchUi() {
+    private void updateUi() {
         SharedPreferences prefs;
         String storedAuthToken;
         LinearLayout loginLl = (LinearLayout)findViewById(R.id.login_ui);
@@ -67,6 +73,8 @@ public class AuthenticateActivity extends AppCompatActivity implements AuthCallb
             Log.v(TAG, "Already Logged in - showing Log Out prompt");
             loginLl.setVisibility(View.GONE);
             logoutLl.setVisibility(View.VISIBLE);
+            TextView tv = (TextView)findViewById(R.id.tokenTv);
+            tv.setText("Logged in with Token:"+storedAuthToken);
         }
 
     }
@@ -95,5 +103,15 @@ public class AuthenticateActivity extends AppCompatActivity implements AuthCallb
                 }
             };
 
+    View.OnClickListener onLogout =
+            new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    Log.v(TAG, "onLogout");
+                    //m_status=false;
+                    mWac.logout();
+                    updateUi();
+                }
+            };
 
 }

app/src/main/java/uk/org/openseizuredetector/WebApiConnection.java

@@ -51,9 +51,16 @@ public class WebApiConnection {
                 new Response.Listener<String>() {
                     @Override
                     public void onResponse(String response) {
+                        String tokenStr;
                         Log.v(TAG, "Response is: " + response);
+                        try {
+                            JSONObject jo = new JSONObject(response);
+                            tokenStr = jo.getString("token");
+                        } catch (JSONException e) {
+                            tokenStr = "Error Parsing Rsponse";
+                        }
                         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
-                        prefs.edit().putString("webApiAuthToken", response).commit();
+                        prefs.edit().putString("webApiAuthToken", tokenStr).commit();
                         mAuthCallback.authCallback(true, response);
                     }
                 },
@@ -82,4 +89,23 @@ public class WebApiConnection {
         return (true);
     }
 
+    // Remove the stored token so future calls are not authemticated.
+    public void logout() {
+        Log.v(TAG, "logout()");
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
+        prefs.edit().putString("webApiAuthToken", null).commit();
+    }
+
+
+    // Create a new event in the remote database, based on the provided parameters.
+    public boolean createEvent() {
+        Log.v(TAG,"createEvent() - FIXME - This does not do anything!");
+
+    }
+
+    public boolean createDatapoint() {
+        Log.v(TAG,"createDatapoint() - FIXME - This does not do anything!");
+
+    }
+
 }

app/src/main/res/layout/activity_authenticate.xml

@@ -4,16 +4,10 @@
     android:layout_height="fill_parent"
     android:orientation="vertical">
 
-    <TextView
-        android:id="@+id/versionTv"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Android OpenSeizureDetector Version x.xx" />
-
     <ImageView
         android:layout_width="match_parent"
         android:layout_height="64dp"
-        android:background="#FFFFBB33"
+        android:background="#FFFFFF"
         android:contentDescription="@string/app_name"
         android:scaleType="center"
         android:src="@drawable/star_of_life_24x24" />