Update registration flow

src/org/thoughtcrime/securesms/util/PlayServicesUtil.java

@@ -0,0 +1,61 @@
+package org.thoughtcrime.securesms.util;
+
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.util.Log;
+
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
+
+public class PlayServicesUtil {
+
+  private static final String TAG = PlayServicesUtil.class.getSimpleName();
+
+  public enum PlayServicesStatus {
+    SUCCESS,
+    MISSING,
+    NEEDS_UPDATE,
+    TRANSIENT_ERROR
+  }
+
+  public static PlayServicesStatus getPlayServicesStatus(Context context) {
+    int gcmStatus = 0;
+
+    try {
+      gcmStatus = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(context);
+    } catch (Throwable t) {
+      Log.w(TAG, t);
+      return PlayServicesStatus.MISSING;
+    }
+
+    Log.w(TAG, "Play Services: " + gcmStatus);
+
+    switch (gcmStatus) {
+      case ConnectionResult.SUCCESS:
+        return PlayServicesStatus.SUCCESS;
+      case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
+        try {
+          ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo("com.google.android.gms", 0);
+
+          if (applicationInfo != null && !applicationInfo.enabled) {
+            return PlayServicesStatus.MISSING;
+          }
+        } catch (PackageManager.NameNotFoundException e) {
+          Log.w(TAG, e);
+        }
+
+        return PlayServicesStatus.NEEDS_UPDATE;
+      case ConnectionResult.SERVICE_DISABLED:
+      case ConnectionResult.SERVICE_MISSING:
+      case ConnectionResult.SERVICE_INVALID:
+      case ConnectionResult.API_UNAVAILABLE:
+      case ConnectionResult.SERVICE_MISSING_PERMISSION:
+        return PlayServicesStatus.MISSING;
+      default:
+        return PlayServicesStatus.TRANSIENT_ERROR;
+    }
+  }
+
+}