From ccb247cf2d7111c2080414741a7531905ce280f3 Mon Sep 17 00:00:00 2001
From: Nick Pelly <npelly@google.com>
Date: Tue, 23 Aug 2011 18:58:05 -0700
Subject: [PATCH] Update for NDEF push API change.

Change-Id: I2a51c8c39cd23f90bc35133b2f50b01a82fe1ce4
---
 .../android/email/activity/NfcHandler.java    | 47 +++++++------------
 .../email/activity/UIControllerBase.java      | 13 +++--
 2 files changed, 26 insertions(+), 34 deletions(-)

diff --git a/src/com/android/email/activity/NfcHandler.java b/src/com/android/email/activity/NfcHandler.java
index f41dc24ea..775ec83d1 100644
--- a/src/com/android/email/activity/NfcHandler.java
+++ b/src/com/android/email/activity/NfcHandler.java
@@ -20,6 +20,7 @@ import android.app.Activity;
 import android.nfc.NdefMessage;
 import android.nfc.NdefRecord;
 import android.nfc.NfcAdapter;
+import android.nfc.NfcEvent;
 import android.text.TextUtils;
 
 import com.android.emailcommon.provider.Account;
@@ -35,17 +36,25 @@ import java.net.URLEncoder;
   * will be called to create the data to be sent over the link,
   * which is a vCard in this case.
   */
-public class NfcHandler implements NfcAdapter.NdefPushCallback {
-    private NfcAdapter mNfcAdapter;
-    private UIControllerBase mUiController;
-    private Activity mActivity;
-    private String mCurrentEmail;
+public class NfcHandler implements NfcAdapter.CreateNdefMessageCallback {
+    final UIControllerBase mUiController;
+    final Activity mActivity;
 
-    public NfcHandler(UIControllerBase controller, Activity
-            activity) {
+    String mCurrentEmail;
+
+    public static NfcHandler register(UIControllerBase controller, Activity activity) {
+        NfcAdapter adapter = NfcAdapter.getDefaultAdapter(activity);
+        if (adapter == null) {
+            return null;  // NFC not available on this device
+        }
+        NfcHandler nfcHandler = new NfcHandler(controller, activity);
+        adapter.setNdefPushMessageCallback(nfcHandler, activity);
+        return nfcHandler;
+    }
+
+    public NfcHandler(UIControllerBase controller, Activity activity) {
         mUiController = controller;
         mActivity = activity;
-        mNfcAdapter = NfcAdapter.getDefaultAdapter(mActivity);
     }
 
     public void onAccountChanged() {
@@ -57,22 +66,6 @@ public class NfcHandler implements NfcAdapter.NdefPushCallback {
         } else {
             mCurrentEmail = null;
         }
-
-    }
-
-    public void onPause() {
-        if (mNfcAdapter != null) {
-            mNfcAdapter.disableForegroundNdefPush(
-                    mActivity);
-        }
-    }
-
-    public void onResume() {
-        if (mNfcAdapter != null) {
-            mNfcAdapter.enableForegroundNdefPush(
-                    mActivity, this);
-            onAccountChanged(); // Fetch current account
-        }
     }
 
     private static NdefMessage buildMailtoNdef(String address) {
@@ -95,15 +88,11 @@ public class NfcHandler implements NfcAdapter.NdefPushCallback {
     }
 
     @Override
-    public NdefMessage createMessage() {
+    public NdefMessage createNdefMessage(NfcEvent event) {
         if (mCurrentEmail != null) {
             return buildMailtoNdef(mCurrentEmail);
         } else {
             return null;
         }
     }
-
-    @Override
-    public void onMessagePushed() {
-    }
 }
diff --git a/src/com/android/email/activity/UIControllerBase.java b/src/com/android/email/activity/UIControllerBase.java
index a70bbb907..aebda550a 100644
--- a/src/com/android/email/activity/UIControllerBase.java
+++ b/src/com/android/email/activity/UIControllerBase.java
@@ -97,7 +97,7 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
      * The NfcHandler implements Near Field Communication sharing features
      * whenever the activity is in the foreground.
      */
-    private final NfcHandler mNfcHandler;
+    private NfcHandler mNfcHandler;
 
     /**
      * The active context for the current MessageList.
@@ -149,7 +149,6 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
         if (DEBUG_FRAGMENTS) {
             FragmentManager.enableDebugLogging(true);
         }
-        mNfcHandler = new NfcHandler(this, activity);
     }
 
     /**
@@ -181,6 +180,7 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
         }
         mRefreshManager.registerListener(mRefreshListener);
         mActionBarController.onActivityCreated();
+        mNfcHandler = NfcHandler.register(this, mActivity);
     }
 
     /**
@@ -203,7 +203,9 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
             Log.d(Logging.LOG_TAG, this + " onActivityResume");
         }
         refreshActionBar();
-        mNfcHandler.onResume();
+        if (mNfcHandler != null) {
+            mNfcHandler.onAccountChanged();  // workaround for email not set on initial load
+        }
     }
 
     /**
@@ -213,7 +215,6 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
         if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) {
             Log.d(Logging.LOG_TAG, this + " onActivityPause");
         }
-        mNfcHandler.onPause();
     }
 
     /**
@@ -552,7 +553,9 @@ abstract class UIControllerBase implements MailboxListFragment.Callback,
                 openMailbox(accountId, inboxId);
             }
         }
-        mNfcHandler.onAccountChanged();
+        if (mNfcHandler != null) {
+            mNfcHandler.onAccountChanged();
+        }
     }
 
     /**