android:id Supply an identifier name for this view, to later retrieve it with View.findViewById() or Activity.findViewById(). This must be a resource reference; typically you set this using the @+ syntax to create a new ID resources. For example: android:id=”@+id/my_id” which allows you to later retrieve the view with findViewById(R.id.my_id). Must be a reference to another … Read more
An attribute must be specified with the following syntax: Name Eq AttValue where Name is a legal XML name, Eq is = optionally preceded or followed by whitespace, and AttValue is a legal attribute value. This definition is true for both XML 1.0 and XML 1.1. If you are trying to specify an attribute as … Read more
You will have to escape ” to " ‘ to ' < to < > to > & to & for xml.
As Activity.onCreateView source says: String fname = attrs.getAttributeValue(null, “class”); TypedArray a = context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment); if (fname == null) { fname = a.getString(com.android.internal.R.styleable.Fragment_name); } That seemingly means that program looks “class” attribute first. And on fail looks “name” attribute. So as far as it’s true using “class” if more efficient.
No, this isn’t possible. Comments are not allowed in an XML open tag. Depending on your application, you might get away with “commenting out” the attributes by prefixing their names with “_”, or you might not (if the XML is validated against a schema or all attributes are parsed). Because whitespace is allowed, and most … Read more
Usage of attributes or elements is usually decided by the data you are trying to model. For instance, if a certain entity is PART of the data, then it is advisable to make it an element. For example the name of the employee is an essential part of the employee data. Now if you want … Read more
INVISIBLE: This view is invisible, but it still takes up space for layout purposes. GONE: This view is invisible, and it doesn’t take any space for layout purposes.
INVISIBLE: This view is invisible, but it still takes up space for layout purposes. GONE: This view is invisible, and it doesn’t take any space for layout purposes.