What is the use of ArrayAdapter?
You can use this adapter to provide views for an AdapterView , Returns a view for each object in a collection of data objects you provide, and can be used with list-based user interface widgets such as ListView or Spinner .
How do I set up ArrayAdapter?
Go to app > res > layout > right-click > New > Layout Resource File and create a new layout file and name this file as item_view. xml and make the root element as a LinearLayout. This will contain a TextView that is used to display the array objects as output.
What are the two types of fragments?
FRAGMENTS.
What is difference between View and ViewGroup object give some examples of view and ViewGroup objects?
Eg: EditText, Button, CheckBox, etc. ViewGroup is an invisible container of other views (child views) and other ViewGroup….Difference Table.
| View | ViewGroup |
|---|---|
| View is a simple rectangle box that responds to the user’s actions. | ViewGroup is the invisible container. It holds View and ViewGroup |
Why should you use string resources instead of hard coded strings in your apps?
As a general rule, you should never use hardcoded strings in your layout but always use string resources (which means the all strings are stored in one separate file where they are easily changeable for different languages and so on).
What is the main advantage of reusing views in getView () of an adapter?
Advantage is that if you properly reuse RECYCLED VIEW in your getView, then command inflate() will be invoked sometimes only once (but not for every list item, when it’s not necessary ).
What is an example of an appositive fragment?
An appositive fragment will begin with a noun and usually include one or more clarifying phrases or subordinate clauses after it. Here are some examples: The unprepared student who was always begging for an extra pencil and a couple sheets of blank paper. A slacker wasting his afternoon in front of the television.
What are the four types of sentence fragments?
Listed below are different types of sentence fragments, along with examples and corrections.
- Prepositional Phrase Fragments.
- Infinitive Fragments.
- -ing Fragments.
- Dependent Clauses.
- Fragments using subordinate clauses.
- Relative pronoun fragments.
What is the difference between listadapter and baseadapter and arrayadapter?
ListAdapter is a an interface implemented by concrete adapter classes. BaseAdapter is an abstract class whereas ArrayAdapter and ListAdapter are the concrete classes. ArrayAdapter and ListAdapter classes are developed since in general we deal with the array data sets and list data sets.
Why doesn’t tab1fragment work with listview?
Since Tab1Fragment would extend ListFragment (which, in turn, extends Fragment) the method would not see it as an object of the type Fragment. You need to get a reference to the ListView object to be populated.
Is it possible to extend listfragment?
But you can definitely extend “ListFragment”. I tried extending ListFragment, but then there is the problem with the method getItem () (see above) which returns an object of the type Fragment. Since Tab1Fragment would extend ListFragment (which, in turn, extends Fragment) the method would not see it as an object of the type Fragment.