when i run my application emulator simply says "unfortunately,myapp has stopped". this is the logchat
--------- beginning of crash 01-12 19:18:23.589 3469-3469/eu.masconsult.template.recipes.green E/AndroidRuntime: FATAL EXCEPTION: main
Process: eu.masconsult.template.recipes.green, PID: 3469
java.lang.RuntimeException: Unable to start activity ComponentInfo{eu.masconsult.template.recipes.green/eu.masconsult.template.recipes.ui.RecipeItemListActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayShowTitleEnabled(boolean)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayShowTitleEnabled(boolean)' on a null object reference
at eu.masconsult.template.recipes.ui.RecipeItemListActivity.onCreate(RecipeItemListActivity.java:74)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 01-12 19:18:25.210 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 41.292ms 01-12 19:18:26.642 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 22.021ms 01-12 19:18:27.875 3469-3525/eu.masconsult.template.recipes.green E/ImportRecipesOperation: Error while importing recipes.
com.robotoworks.mechanoid.net.UnexpectedHttpStatusException: Expected Status 200, Actual Status 403
at com.robotoworks.mechanoid.net.HttpUrlConnectionResponse.checkResponseCodeOk(HttpUrlConnectionResponse.java:58)
at eu.masconsult.template.recipes.ops.ImportRecipesOperation.readRecipes(ImportRecipesOperation.java:101)
at eu.masconsult.template.recipes.ops.ImportRecipesOperation.onExecute(ImportRecipesOperation.java:53)
at eu.masconsult.template.recipes.ops.AbstractImportRecipesOperation.execute(AbstractImportRecipesOperation.java:63)
at com.robotoworks.mechanoid.ops.OperationProcessor$OperationRunnable.run(OperationProcessor.java:264)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.os.HandlerThread.run(HandlerThread.java:61) 01-12 19:18:27.875 3469-3525/eu.masconsult.template.recipes.green D/ImportRecipesOperation: Try with last successfull updateUrl. 01-12 19:18:30.213 3469-3525/eu.masconsult.template.recipes.green D/ImportRecipesOperation: Getting recipes from: http://s3.amazonaws.com/masconsult-template-recipes/recipes-update.json 01-12 19:18:35.275 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 6.016ms 01-12 19:18:40.201 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 776.201ms 01-12 19:18:40.636 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 220.969ms 01-12 19:18:41.431 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 13.152ms 01-12 19:18:43.451 3469-3525/eu.masconsult.template.recipes.green D/ImportRecipesOperation: Found 1 recipes 01-12 19:18:45.706 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 242.773ms 01-12 19:18:47.391 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 439.048ms 01-12 19:18:47.972 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 507.589ms 01-12 19:18:48.676 3469-3525/eu.masconsult.template.recipes.green D/ImportRecipesOperation: Inserted 0 recipes and updated 1 recipes in db for 5 seconds 01-12 19:20:00.649 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 18.235ms 01-12 19:20:59.500 3469-3476/eu.masconsult.template.recipes.green W/art: Suspending all threads took: 17.266ms
and this is my java file:
RecipeItemListActivity.java
/**
* An activity representing a list of RecipeItems. This activity has different presentations for
* handset and tablet-size devices. On handsets, the activity presents a list of items, which when
* touched, lead to a {@link RecipeItemDetailActivity} representing item details. On tablets, the
* activity presents the list of items and item details side-by-side using two vertical panes.
* <p>
* The activity makes heavy use of fragments. The list of items is a {@link RecipeItemListFragment}
* and the item details (if present) is a {@link RecipeItemDetailFragment}.
* <p>
* This activity also implements the required {@link RecipeItemListFragment.Callbacks} interface to
* listen for item selections.
*/
public class RecipeItemListActivity extends ActionBarActivity implements
RecipeItemListFragment.Callbacks, OnNavigationListener, LoaderCallbacks<Cursor>,
OnActionExpandListener, OnSuggestionListener {
private static final String EXTRA_RECIPE_ID = "recipeID";
private static final int FAVORITES_ITEM_INDEX = 1;
private static final int ALL_RECIPES_ITEM_INDEX = 0;
/**
* Whether or not the activity is in two-pane mode, i.e. running on a tablet device.
*/
private boolean mTwoPane;
private SimpleCursorAdapter categoriesAdapter;
private RecipeItemListFragment recipeListFragment;
private SearchView searchView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
supportRequestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
setContentView(R.layout.activity_recipeitem_list);
recipeListFragment = (RecipeItemListFragment) getSupportFragmentManager().findFragmentById(
R.id.recipeitem_list);
setUpCategoriesSpinner();
if (findViewById(R.id.recipeitem_detail_container) != null) {
// The detail container view will be present only in the
// large-screen layouts (res/values-large and
// res/values-sw600dp). If this view is present, then the
// activity should be in two-pane mode.
mTwoPane = true;
// In two-pane mode, list items should be given the
// 'activated' state when touched.
recipeListFragment.setActivateOnItemClick(true);
((RecipeItemListFragment) getSupportFragmentManager().findFragmentById(
R.id.recipeitem_list)).setActivateOnItemClick(true);
if (getIntent().hasExtra(EXTRA_RECIPE_ID) && savedInstanceState == null) {
((RecipeItemListFragment) getSupportFragmentManager().findFragmentById(
R.id.recipeitem_list)).setSelectionById(getIntent().getLongExtra(
EXTRA_RECIPE_ID, 0));
}
}
if (getIntent().hasExtra(EXTRA_RECIPE_ID) && savedInstanceState == null) {
startService(NotificationService.getIntentForAlarm(this));
onItemSelected(getIntent().getLongExtra(EXTRA_RECIPE_ID, 0));
}
}
@Override
protected void onResume() {
super.onResume();
Fragment fragment = getSupportFragmentManager().findFragmentById(
R.id.recipeitem_detail_container);
if (fragment != null && fragment.isAdded()) {
findViewById(R.id.detail_empty_view).setVisibility(View.GONE);
}
}
private void setUpCategoriesSpinner() {
String[] columns = new String[] { Categories.CATEGORY };
getSupportLoaderManager().restartLoader(1, null, this);
categoriesAdapter = new SimpleCursorAdapter(this, R.layout.spinner_category, null, columns,
new int[] { android.R.id.text1 }, 0);
ArrayAdapter<String> allRecipesAdapter = new ArrayAdapter<String>(this,
R.layout.spinner_category, android.R.id.text1, new String[] {
getString(R.string.all_recipes), getString(R.string.favorites) });
allRecipesAdapter.setDropDownViewResource(R.layout.drop_down_item_category);
categoriesAdapter.setDropDownViewResource(R.layout.drop_down_item_category);
MergeSpinnerAdapter mergeAdapter = new MergeSpinnerAdapter();
mergeAdapter.addAdapter(allRecipesAdapter);
mergeAdapter.addAdapter(categoriesAdapter);
getSupportActionBar().setListNavigationCallbacks(mergeAdapter, this);
}
/**
* Callback method from {@link RecipeItemListFragment.Callbacks} indicating that the item with
* the given ID was selected.
*/
@Override
public void onItemSelected(long id) {
if (mTwoPane) {
// In two-pane mode, show the detail view in this activity by
// adding or replacing the detail fragment using a
// fragment transaction.
findViewById(R.id.detail_empty_view).setVisibility(View.GONE);
getSupportFragmentManager().beginTransaction()
.replace(R.id.recipeitem_detail_container, RecipeItemDetailFragment.create(id))
.commit();
} else {
// In single-pane mode, simply start the detail activity
// for the selected item ID.
Intent detailIntent = new Intent(this, RecipeItemDetailActivity.class);
detailIntent.putExtra(RecipeItemDetailFragment.ARG_ITEM_ID, id);
startActivity(detailIntent);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.action_search) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.search_menu, menu);
setUpSearchView(menu);
return super.onCreateOptionsMenu(menu);
}
private void setUpSearchView(Menu menu) {
MenuItem menuItem = menu.findItem(R.id.action_search);
searchView = (SearchView) MenuItemCompat.getActionView(menuItem);
searchView.setIconifiedByDefault(false);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
MenuItemCompat.setOnActionExpandListener(menuItem, this);
searchView.setOnSuggestionListener(this);
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
if (!TextUtils.isEmpty(query)) {
SearchRecentSuggestions suggestions = new SearchRecentSuggestions(this,
SearchRecipeSuggestionsProvider.AUTHORITY,
SearchRecipeSuggestionsProvider.MODE);
suggestions.saveRecentQuery(query, null);
}
recipeListFragment.setQuery(query);
}
}
@Override
public boolean onNavigationItemSelected(int which, long id) {
RecipeItemListFragment listFragment = (RecipeItemListFragment) getSupportFragmentManager()
.findFragmentById(R.id.recipeitem_list);
if (which == ALL_RECIPES_ITEM_INDEX) {
listFragment.showRecipesFromCategory(null);
return true;
} else if (which == FAVORITES_ITEM_INDEX) {
listFragment.showFavorites();
return true;
}
Cursor item = (Cursor) categoriesAdapter.getItem(which - 2);
String category = CategoriesRecord.fromCursor(item).getCategory();
listFragment.showRecipesFromCategory(category);
return true;
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
return SQuery.newQuery().createSupportLoader(Categories.CONTENT_URI,
CategoriesRecord.PROJECTION);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
categoriesAdapter.swapCursor(data);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
categoriesAdapter.swapCursor(null);
}
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
recipeListFragment.setQuery(null);
return true;
}
public static Intent newIntentForRecipe(Context context, long recipeId) {
Intent intent = new Intent(context, RecipeItemListActivity.class);
intent.putExtra(EXTRA_RECIPE_ID, recipeId);
return intent;
}
@Override
public boolean onSuggestionClick(int position) {
CursorAdapter selectedView = searchView.getSuggestionsAdapter();
Cursor cursor = (Cursor) selectedView.getItem(position);
int index = cursor.getColumnIndexOrThrow(SearchManager.SUGGEST_COLUMN_TEXT_1);
searchView.setQuery(cursor.getString(index), true);
return true;
}
@Override
public boolean onSuggestionSelect(int position) {
return true;
}
}
