Fix settings export on API 19+

k9mail/src/main/java/com/fsck/k9/activity/Accounts.java

@@ -29,6 +29,7 @@ import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.text.Editable;
@@ -137,6 +138,9 @@ public class Accounts extends K9ListActivity implements OnItemClickListener {
     private TextView mActionBarSubTitle;
     private TextView mActionBarUnread;
 
+    private boolean exportGlobalSettings;
+    private ArrayList<String> exportAccountUuids;
+
     /**
      * Contains information about objects that need to be retained on configuration changes.
      *
@@ -329,6 +333,9 @@ public class Accounts extends K9ListActivity implements OnItemClickListener {
     private static String ACCOUNT_STATS = "accountStats";
     private static String STATE_UNREAD_COUNT = "unreadCount";
     private static String SELECTED_CONTEXT_ACCOUNT = "selectedContextAccount";
+    private static final String STATE_EXPORT_GLOBAL_SETTINGS = "exportGlobalSettings";
+    private static final String STATE_EXPORT_ACCOUNTS = "exportAccountUuids";
+
 
     public static final String EXTRA_STARTUP = "startup";
 
@@ -477,6 +484,17 @@ public class Accounts extends K9ListActivity implements OnItemClickListener {
         }
         outState.putSerializable(STATE_UNREAD_COUNT, mUnreadMessageCount);
         outState.putSerializable(ACCOUNT_STATS, accountStats);
+
+        outState.putBoolean(STATE_EXPORT_GLOBAL_SETTINGS, exportGlobalSettings);
+        outState.putStringArrayList(STATE_EXPORT_ACCOUNTS, exportAccountUuids);
+    }
+
+    @Override
+    protected void onRestoreInstanceState(Bundle state) {
+        super.onRestoreInstanceState(state);
+
+        exportGlobalSettings = state.getBoolean(STATE_EXPORT_GLOBAL_SETTINGS, false);
+        exportAccountUuids = state.getStringArrayList(STATE_EXPORT_ACCOUNTS);
     }
 
     private StorageManager.StorageListener storageListener = new StorageManager.StorageListener() {
@@ -1887,9 +1905,6 @@ public class Accounts extends K9ListActivity implements OnItemClickListener {
 
     }
 
-    public static final String EXTRA_INC_GLOBALS = "include_globals";
-    public static final String EXTRA_ACCOUNTS = "accountUuids";
-
     public void onExport(final boolean includeGlobals, final Account account) {
         // TODO, prompt to allow a user to choose which accounts to export
         ArrayList<String> accountUuids = null;
@@ -1898,36 +1913,28 @@ public class Accounts extends K9ListActivity implements OnItemClickListener {
             accountUuids.add(account.getUuid());
         }
 
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            exportGlobalSettings = includeGlobals;
+            exportAccountUuids = accountUuids;
+
             Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
-
+            intent.setType("application/octet-stream");
-            intent.addCategory(Intent.CATEGORY_OPENABLE);
-            intent.setType("text/plain");
             intent.putExtra(Intent.EXTRA_TITLE, SettingsExporter.EXPORT_FILENAME);
-            intent.putStringArrayListExtra(EXTRA_ACCOUNTS, accountUuids);
+            intent.addCategory(Intent.CATEGORY_OPENABLE);
-            intent.putExtra(EXTRA_INC_GLOBALS, includeGlobals);
 
-            PackageManager packageManager = getPackageManager();
+            startActivityForResult(intent, ACTIVITY_REQUEST_SAVE_SETTINGS_FILE);
-            List<ResolveInfo> infos = packageManager.queryIntentActivities(intent, 0);
-
-            if (infos.size() > 0) {
-                startActivityForResult(Intent.createChooser(intent, null), ACTIVITY_REQUEST_SAVE_SETTINGS_FILE);
-            } else {
-                showDialog(DIALOG_NO_FILE_MANAGER);
-            }
         } else {
-            //Pre-Kitkat
+            startExport(includeGlobals, accountUuids, null);
-            ExportAsyncTask asyncTask = new ExportAsyncTask(this, includeGlobals, accountUuids, null);
-            setNonConfigurationInstance(asyncTask);
-            asyncTask.execute();
         }
     }
 
     public void onExport(Intent intent) {
-        boolean includeGlobals = intent.getBooleanExtra(EXTRA_INC_GLOBALS, false);
+        Uri documentsUri = intent.getData();
-        ArrayList<String> accountUuids = intent.getStringArrayListExtra(EXTRA_ACCOUNTS);
+        startExport(exportGlobalSettings, exportAccountUuids, documentsUri);
+    }
 
-        ExportAsyncTask asyncTask = new ExportAsyncTask(this, includeGlobals, accountUuids, intent.getData());
+    private void startExport(boolean exportGlobalSettings, ArrayList<String> exportAccountUuids, Uri documentsUri) {
+        ExportAsyncTask asyncTask = new ExportAsyncTask(this, exportGlobalSettings, exportAccountUuids, documentsUri);
         setNonConfigurationInstance(asyncTask);
         asyncTask.execute();
     }

k9mail/src/main/java/com/fsck/k9/preferences/SettingsExporter.java

@@ -17,11 +17,11 @@ import java.util.TreeMap;
 import android.content.Context;
 import android.net.Uri;
 import android.os.Environment;
+
 import timber.log.Timber;
 import android.util.Xml;
 
 import com.fsck.k9.Account;
-import com.fsck.k9.K9;
 import com.fsck.k9.Preferences;
 import com.fsck.k9.helper.FileHelper;
 import com.fsck.k9.mail.ServerSettings;
@@ -81,7 +81,6 @@ public class SettingsExporter {
             throws SettingsImportExportException {
 
         OutputStream os = null;
-        String filename = null;
         try {
             File dir = new File(Environment.getExternalStorageDirectory() + File.separator + context.getPackageName());
             if (!dir.mkdirs()) {
@@ -89,7 +88,7 @@ public class SettingsExporter {
             }
 
             File file = FileHelper.createUniqueFile(dir, EXPORT_FILENAME);
-            filename = file.getAbsolutePath();
+            String filename = file.getAbsolutePath();
             os = new FileOutputStream(filename);
 
             exportPreferences(context, os, includeGlobals, accountUuids);
@@ -99,13 +98,7 @@ public class SettingsExporter {
         } catch (Exception e) {
             throw new SettingsImportExportException(e);
         } finally {
-            if (os != null) {
+            closeOrThrow(os);
-                try {
-                    os.close();
-                } catch (IOException ioe) {
-                    Timber.w("Couldn't close exported settings file: %s", filename);
-                }
-            }
         }
     }
 
@@ -113,24 +106,29 @@ public class SettingsExporter {
             throws SettingsImportExportException {
 
         OutputStream os = null;
-        String filename = null;
         try {
             os = context.getContentResolver().openOutputStream(uri);
             exportPreferences(context, os, includeGlobals, accountUuids);
         } catch (Exception e) {
             throw new SettingsImportExportException(e);
         } finally {
-            if (os != null) {
+            closeOrThrow(os);
-                try {
-                    os.close();
-                } catch (IOException ioe) {
-                    Log.w(K9.LOG_TAG, "Couldn't close exported settings file: " + filename);
-                }
-            }
         }
     }
 
-   static void exportPreferences(Context context, OutputStream os, boolean includeGlobals, Set<String> accountUuids)
+    private static void closeOrThrow(OutputStream outputStream) throws SettingsImportExportException {
+        if (outputStream == null) {
+            return;
+        }
+
+        try {
+            outputStream.close();
+        } catch (IOException e) {
+            throw new SettingsImportExportException(e);
+        }
+    }
+
+    static void exportPreferences(Context context, OutputStream os, boolean includeGlobals, Set<String> accountUuids)
             throws SettingsImportExportException {
 
         try {