Update headers when accounts are changed.

Also pass an account to authenticator settings to avoid Email settings crash.

Bug: 6610990
Change-Id: I42884619728dd97446de65cc77e1729f3e143efa

src/com/android/settings/Settings.java

@@ -26,6 +26,9 @@ import com.android.settings.deviceinfo.Memory;
 import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.wifi.WifiEnabler;
 
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.accounts.OnAccountsUpdateListener;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -64,7 +67,8 @@ import java.util.List;
 /**
  * Top-level settings activity to handle single pane and double pane UI layout.
  */
-public class Settings extends PreferenceActivity implements ButtonBarHandler {
+public class Settings extends PreferenceActivity
+        implements ButtonBarHandler, OnAccountsUpdateListener {
 
     private static final String LOG_TAG = "Settings";
     private static final String META_DATA_KEY_HEADER_ID =
@@ -183,6 +187,7 @@ public class Settings extends PreferenceActivity implements ButtonBarHandler {
         ListAdapter listAdapter = getListAdapter();
         if (listAdapter instanceof HeaderAdapter) {
             ((HeaderAdapter) listAdapter).resume();
+            AccountManager.get(this).addOnAccountsUpdatedListener(this, null, true);
         }
     }
 
@@ -193,6 +198,7 @@ public class Settings extends PreferenceActivity implements ButtonBarHandler {
         ListAdapter listAdapter = getListAdapter();
         if (listAdapter instanceof HeaderAdapter) {
             ((HeaderAdapter) listAdapter).pause();
+            AccountManager.get(this).removeOnAccountsUpdatedListener(this);
         }
     }
 
@@ -711,6 +717,12 @@ public class Settings extends PreferenceActivity implements ButtonBarHandler {
         super.setListAdapter(new HeaderAdapter(this, mHeaders, mAuthenticatorHelper));
     }
 
+    @Override
+    public void onAccountsUpdated(Account[] accounts) {
+        mAuthenticatorHelper.onAccountsUpdated(this, accounts);
+        invalidateHeaders();
+    }
+
     /*
      * Settings subclasses for launching independently.
      */

src/com/android/settings/accounts/ManageAccountsSettings.java

@@ -60,6 +60,7 @@ import java.util.HashSet;
 public class ManageAccountsSettings extends AccountPreferenceBase
         implements OnAccountsUpdateListener {
 
+    private static final String ACCOUNT_KEY = "account"; // to pass to auth settings
     public static final String KEY_ACCOUNT_TYPE = "account_type";
     public static final String KEY_ACCOUNT_LABEL = "account_label";
 
@@ -74,6 +75,8 @@ public class ManageAccountsSettings extends AccountPreferenceBase
     private SettingsDialogFragment mDialogFragment;
     // If an account type is set, then show only accounts of that type
     private String mAccountType;
+    // Temporary hack, to deal with backward compatibility 
+    private Account mFirstAccount;
 
     @Override
     public void onCreate(Bundle icicle) {
@@ -299,6 +302,7 @@ public class ManageAccountsSettings extends AccountPreferenceBase
     public void onAccountsUpdated(Account[] accounts) {
         if (getActivity() == null) return;
         getPreferenceScreen().removeAll();
+        mFirstAccount = null;
         addPreferencesFromResource(R.xml.manage_accounts_settings);
         for (int i = 0, n = accounts.length; i < n; i++) {
             final Account account = accounts[i];
@@ -322,6 +326,9 @@ public class ManageAccountsSettings extends AccountPreferenceBase
                 final AccountPreference preference =
                         new AccountPreference(getActivity(), account, icon, auths);
                 getPreferenceScreen().addPreference(preference);
+                if (mFirstAccount == null) {
+                    mFirstAccount = account;
+                }
             }
         }
         if (mAccountType != null) {
@@ -347,6 +354,7 @@ public class ManageAccountsSettings extends AccountPreferenceBase
                     prefs.removePreference(prefs.getPreference(i));
                     continue;
                 } else {
+                    intent.putExtra(ACCOUNT_KEY, mFirstAccount);
                     intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK);
                 }
             }