viewgroup

public class MainActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TableView tv = new TableView(this); tv.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT)); setContentView(tv); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } public class TableView extends ViewGroup { private Paint oval; private RectF rect; public TableView(Context context) { super(context); oval= new Paint(Paint.ANTI_ALIAS_FLAG); oval

What is the difference between a View and a ViewGroup in Android programming? saibaba vali View View objects are the basic building blocks of User Interface(UI) elements in Android. View is a simple rectangle box which responds to the user's actions. Examples are EditText , Button , CheckBox etc.. View refers to the android.view.View class, which is the base class of all UI classes. ViewGroup ViewGroup is the invisible container. It holds View and ViewGroup For example, LinearLayout is the ViewGroup that contains Button(View), and other Layouts also. ViewGroup is the base class for Layouts.

I have a ListView with some focusable components inside (mostly EditText s). Yeah, I know this isn't exactly recommended, but in general, almost everything is working fine and the focus goes where it has to go (with a few tweaks I had to code). Anyway, my problem is that there's a weird race condition when scrolling the list with your finger and then suddenly using the trackball when the IME keyboard is being displayed . Something must go out of bounds and get recycled at which point the offsetRectBetweenParentAndChild() method must kick in and throw the IllegalArgumentException . The problem