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fragment - getView() method return NULL


You should notice that commit() will run on Handler.post(). That means that your fragment's view will be created AFTER onNavigationDrawerItemSelected.

Better if you call view-related-methods from inside fragment to constrain view's lifecycle.


Categories : Android

Related to : fragment - getView() method return NULL
The method of type Fragment must override or implement a supertype method
Leave the configuration methods and their calls in the FragmentActivity, and create an interface to get/set the index there in the Fragment. In the Fragment: public class TopRatedFragment extends Fragment { public interface ISettings { public int getIndex(); public void setIndex(int index); } @Override public View onCreateView(LayoutInflater inflater, ViewGro

Categories : Android
Fragment and factory method
Static factory methods allow us to initialize and setup a new Fragment without having to call its constructor and additional setter methods. Providing static factory methods for your fragments is good practice because it encapsulates and abstracts the steps required to setup the object from the client. http://www.androiddesignpatterns.com/2012/05/using-newinstance-to-instantiate.html

Categories : Android
How to call async method inside a method which has return type?
I don't like it much, because it involves code that calls an async method synchronously. But the following should work: class AssociationUriMapper : UriMapperBase { public override Uri MapUri(Uri uri) { strUri = uri.ToString(); // File association launch if (strUri.Contains("/FileTypeAssociation")) { // Get the file ID (after "fileToken=").

Categories : C#
Get ImageView width in getView
The problem is that when you try to getWidth, your ImageView have not been appeared on the screen, so it always returns 0. So there are two ways, you can get the width: First way You need to measure your ImageView and then get the measuredWidth: holder.photoPost = (ImageView) convertView.findViewById(R.id.photoPost); holder.photoPost.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPEC

Categories : Android
In order to fill the properties of an object, what is more effective, to send the object as parameter to a method or return it from the method?
It largely depends on your use case. With the second variant, you always create a new DataEntity object, while with the first variant, users could reuse a single instance of that class. If the DataEntity objects are rather short-lived, but a lot of them will be created, the garbage collection might get busy cleaning up all the unused objects with the second variant. With the first variant, it's u

Categories : Java
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