To view the source click the Text tab, it should look similar to this: Drag and drop a ListView on to the layout from the Palette. Open the layout for the second screen ( content_screen2.xml) and delete the TextView.
Start with a basic two screen App, follow the tutorial Starting a Second Activity. When entering code in Studio add import statements when prompted by pressing Alt-Enter.) Start with a Two Screen App Feel free to change data and names to meet your requirements. (This Android list tutorial assumes that Android Studio is installed, a basic App can be created and run, and the code in this article can be correctly copied into Android Studio. This example does not use ListActivity but leaves the Activities extending AppCompatActivity for wider device and Android Studio compatibility. The item selected in the ListView is returned to the first screen for display in a Toast message. In this Android simple list example a Button on one Activity opens a second Activity with a ListView. Hence many frameworks have built in support for lists to make the programmer’s life easy, the Android SDK included. When writing applications getting a user to select an item from several options is a common requirement.
Package are a basic building block of software. ListView listView = rootView.findViewById(R.id.bbq_list_view) LocationAdapter itemsAdapter = new LocationAdapter(getActivity(),locations, R.color.foodCategory) I put LOG statement with LocationAdapter and the one in the constructor printed by that's as far it went before the Null Exception occurred. It seems like the issue is in my LocationAdapter constructor. I did an if statement to verify that it's not null. Line 43 is listView.SetAdapter(itemsAdapter) and I don't think it's null. : Attempt to invoke virtual method 'void ()' on a null object referenceĪt .BBQFragment.onCreateView(BBQFragment.java:43) I then tried to implement the ListView on one of the Fragments and I receive the following Fatal ExceptionĬom. E/AndroidRuntime: FATAL EXCEPTION: main Then I implemented the ViewPager with TabLayout and got that working with my Fragments. I got the ListView working on the Activity page first. I'm trying to implement both a ListView on a Fragment within a ViewPager with TabLayout. I'm wondering if someone could help me with this?
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