findviewbyid

using findviewbyid in a class that does NOT extend Activity in android

by

you should pass the instance of your Activity to your Second Class on the constructor like this : In your Activity Instanciate your Class like this : MyClass instance = new MyClass(this); And in your second Class , the constructor will be like this : public class MyClass { public Activity activity; //…. other attributes … Read more

Null pointer Exception – findViewById()

by

findViewById() returns a View if it exists in the layout you provided in setContentView(), otherwise it returns null and that’s what happening to you. Note that if you don’t setContentView(), and don’t have a valid view to findViewById() on, findViewById() will always return null until you call setContentView(). This also means variables in the top-level … Read more

How can I assign an ID to a view programmatically?

by

Android id overview An Android id is an integer commonly used to identify views; this id can be assigned via XML (when possible) and via code (programmatically.) The id is most useful for getting references for XML-defined Views generated by an Inflater (such as by using setContentView.) Assign id via XML Add an attribute of … Read more

findViewById in Fragment

by

Use getView() or the View parameter from implementing the onViewCreated method. It returns the root view for the fragment (the one returned by onCreateView() method). With this you can call findViewById(). @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { ImageView imageView = (ImageView) getView().findViewById(R.id.foo); // or (ImageView) view.findViewById(R.id.foo); As getView() works only after onCreateView(), … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)