check for alpha and call it a sdk key if it has any alpha characters. (#208)

* check for alpha and call it a sdk key if it has any alpha characters.

* cleanup the file. remove imports and fix tabbing.

Author: thomaszurkan-optimizely

datafile-handler/src/main/java/com/optimizely/ab/android/datafile_handler/BackgroundWatchersCache.java

@@ -127,7 +127,9 @@ List<DatafileConfig> getWatchingDatafileConfigs() {
                     final String projectKey = iterator.next();
                     if (backgroundWatchers.getBoolean(projectKey)) {
                         DatafileConfig datafileConfig = null;
-                        if (projectKey.contains("-")) {
+                        boolean sdkKey = projectKey.matches(".*[A-Za-z].*");
+                        //TODO: This should be changed to store a jsonized datafile config.
+                        if (sdkKey) {
                             datafileConfig = new DatafileConfig(null, projectKey);
                         }
                         else {

test-app/src/main/java/com/optimizely/ab/android/test_app/MyApplication.java

@@ -71,9 +71,11 @@ public void onCreate() {
         // This app is built against a real Optimizely project with real experiments set.  Automated
         // espresso tests are run against this project id.  Changing it will make the Optimizely
         // must match the project id of the compiled in Optimizely data file in rest/raw/data_file.json.
-         OptimizelyManager.Builder builder = OptimizelyManager.builder(PROJECT_ID);
+
+         OptimizelyManager.Builder builder = OptimizelyManager.builder();
          optimizelyManager =  builder.withEventDispatchInterval(60L * 10L)
-                .withDatafileDownloadInterval(60L * 10L)
-                .build(getApplicationContext());
+            .withDatafileDownloadInterval(60L * 10L)
+            .withSDKKey("6hmwpgZcRFp36wH5QLK8Sb")
+            .build(getApplicationContext());
     }
 }