The Attribute Declarations

Widgets ordinarily have characteristics that you can placed in your XML record, like the android mobile phone: src capability we all given on the ImageButton widgets from the design 18 Join to be able to messages in http: //commonsware. com Specific Innovative Commons BY-SA 3. 0 Permit Release Making Your personal Opinions above. It is possible to create your personal personalized characteristics which they can use in your personalized widget, by simply developing a res/values/attrs. xml record to be able to identify these.The Attribute Declarations The declare-styleable element describes what attributes are available on the widget class specified in the name attribute – in our case, we will call the widget Meter . Inside declare-styleable you can have one or more attr elements, each indicating the name of an attribute (e.g., incr ) and what data type the attribute has (e.g., integer ). The data type will help with compile-time validation and in getting any supplied values for this attribute parsed into the appropriate type at runtime. Here, we indicate there are three attributes: max (indicating the highest value the Meter will go to), incr (indicating how much the value should increase when the increment button is clicked), and decr (indicating how much the value should decrease when the decrement button is clicked)The Attribute Declarations