android-loadermanager

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I want to implement LoaderManager in my application in order to reduce the startup time As you can see here but after implementing the

问题 Assume we have an Activity with n TextView s that represent one line notes. These notes are stored somewhere (local database, network etc), and each time onResume() being called, the proper number of TextView s are drawn according to that stored data. Now, lets say the user want to delete a note, what would be the best way the resolve the specific TextView , back to its storage entity? At the moment, the only way I know is by using View.Tag , and having some manager to translate it to data

问题 I am using an Activity that extends SherlockFragmentActivity , that has 3 tabs. The 3 tabs are ListFragments that implement LoaderManager.LoaderCallbacks . The OnCreate method for the Activity loads the tabs like so bar.addTab(bar.newTab() .setTag("venues_list") .setText(getString(R.string.list_venues_header)) .setTabListener(new TabListener<VenueListFragment>( this, getString(R.string.list_invites_header), VenueListFragment.class, null))); // I do the EXACT same thing for the other two tabs,

问题 I am using an Activity that extends SherlockFragmentActivity , that has 3 tabs. The 3 tabs are ListFragments that implement LoaderManager.LoaderCallbacks . The OnCreate method for the Activity loads the tabs like so bar.addTab(bar.newTab() .setTag("venues_list") .setText(getString(R.string.list_venues_header)) .setTabListener(new TabListener<VenueListFragment>( this, getString(R.string.list_invites_header), VenueListFragment.class, null))); // I do the EXACT same thing for the other two tabs,

问题 I am using ActionbarSherlock with a SherlockListFragment that implements LoaderManager.LoaderCallbacks . In my ApplicationActivity onCreate method I am using setContentView(R.layout.application); to set the layout -- works great. I am initializing the actionbar like so ActionBar bar = getSupportActionBar(); bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); bar.setDisplayHomeAsUpEnabled(false); bar.setDisplayShowTitleEnabled(true); /

问题 CursorAdapter have 3 constructors. Let see the guide and reference. 1) CursorAdapter(Context context, Cursor c) This constructor is deprecated. This option is discouraged, as it results in Cursor queries being performed on the application's UI thread and thus can cause poor responsiveness or even Application Not Responding errors. As an alternative, use LoaderManager with a CursorLoader. 2) CursorAdapter(Context context, Cursor c, boolean autoRequery) Constructor that allows control over auto

问题 i want to listen to both GPS and NETWORK location provider from the same listener and implementation is this ok for doing that: locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,metersToUpdate,this); locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,0,metersToUpdate,this); will it user the same methods for both providers ? 回答1: Google says here: You can also request location updates from both the GPS and the Network Location Provider by calling

问题 I am following the tutorial of https://androidbelieve.com/navigation-drawer-with-swipe-tabs-using-design-support-library/ to implement sliding tablayout. It works perfect for empty fragments, However, I have 3 fragments with LoaderManagers and recyclerViews, each one loads different data. When the app loaded at the first time, if I click from the first fragment to the third fragment on the tabLayout without sliding or clicking to second one, it crashes. The data was not loading, as it

问题 I am facing an issue with Loader. I have an Activity, which displays list of records retrieved from local DB. When the activity starts, records are automatically loaded via LoaderManager.initLoader() method. There is also possibility to manually refresh the list via refresh button in ActionBarSherlock. However, after finishing another activity which adds a record to DB, onLoadFinished is not called. I am using SimpleCursorLoader and here is code snippet from the activity: @Override public

问题 I have a ContentProvider , it's having two tables 1. OnlineContacts 2. AllContacts . Then i have a method in which i am querying both the tables and getting their resultant cursors separately. And then joining them using CursorJoiner and making a list of Contacts . Passing this list to my CustomAdapter extending BaseAdapter , i am populating my listview . Like : public static List<Contact> getContacts(Context context){ List<Contact> contactList = new ArrayList<Contact>(); // Getting First