commit 8e915724b6e4374da9b70161ee0a55f0c763e563
author Mindy Pereira <mindyp@google.com> Thu Feb 16 14:42:56 2012 -0800
committer Mindy Pereira <mindyp@google.com> Thu Feb 16 14:51:35 2012 -0800
tree 61b6561bf9c42aaa069466af693da6e17f1fee12
parent 609480e14d4cb999d9b6bb1c224b3584d3f367f0

Take loading of messages associated with a conv off the ui thread.

Also, removed unused activities.
Change-Id: Ib80e71dce03a3821a0e27e9e2d638280dad0ce83

src/com/android/mail/ui/ConversationViewFragment.java

diff --git a/src/com/android/mail/ui/ConversationViewFragment.java b/src/com/android/mail/ui/ConversationViewFragment.java
index 407b6be..601badf 100644
--- a/src/com/android/mail/ui/ConversationViewFragment.java
+++ b/src/com/android/mail/ui/ConversationViewFragment.java
@@ -19,8 +19,10 @@
 
 import android.app.Activity;
 import android.app.Fragment;
+import android.app.LoaderManager;
 import android.content.ContentResolver;
 import android.content.Context;
+import android.content.Loader;
 import android.database.Cursor;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -42,12 +44,14 @@
 /**
  * The conversation view UI component.
  */
-public final class ConversationViewFragment extends Fragment {
+public final class ConversationViewFragment extends Fragment implements
+        LoaderManager.LoaderCallbacks<Cursor> {
+
     private static final String LOG_TAG = new LogUtils().getLogTag();
 
-    private ControllableActivity mActivity;
+    private static final int MESSAGE_LOADER_ID = 0;
 
-    private ContentResolver mResolver;
+    private ControllableActivity mActivity;
 
     private Conversation mConversation;
 
@@ -96,7 +100,6 @@
             return;
         }
         mActivity.attachConversationView(this);
-        mResolver = mActivity.getContentResolver();
         mDateBuilder = new FormattedDateBuilder(mActivity.getActivityContext());
         // Show conversation and start loading messages.
         showConversation();
@@ -133,12 +136,27 @@
      */
     private void showConversation() {
         mSubject.setText(mConversation.subject);
-        mMessageCursor = mResolver.query(mConversation.messageListUri,
-                UIProvider.MESSAGE_PROJECTION, null, null, null);
+        getLoaderManager().initLoader(MESSAGE_LOADER_ID, Bundle.EMPTY, this);
+    }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        return new UIProviderCursorLoader(mActivity.getActivityContext(),
+                UIProvider.MESSAGE_PROJECTION, mConversation.messageListUri);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        mMessageCursor = data;
         mMessageList.setAdapter(new MessageListAdapter(mActivity.getActivityContext(),
                 mMessageCursor));
     }
 
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // Do nothing.
+    }
+
     class MessageListAdapter extends SimpleCursorAdapter {
         public MessageListAdapter(Context context, Cursor cursor) {
             super(context, R.layout.message, cursor,