As I see it, the real values you can add in reality to an attribute is limited by what you can obtain from it. Check the AttributeSet class reference here for more hints. So both of them change the activity's background, but the colorBackground changes many more things as well.
Aside: Note the special schema URL in the namespace. If you were using a custom View from your own project you would use a URL based on your package name. But since the custom View is in an included library you should use the res-auto short-cut. The real schema URL will be automatically inserted when your app is built. Difference between declare-styleable and style. Asked 4 Months ago Answers: 5 Viewed 20 times. The difference between styleable and non-styleable seems to be that: You can use styleable attributes in " style.
The constructor of the custom class needs to read the styled and the non-styled attributes in a different way: the styled attributes with obtainStyledAttributes , and the non-styled attributes with attr. There's this question here: Defining custom attrs with some info, but not much. Handling data. User input. Watch Face Studio.
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Some students here may ask, must the styleable collection be included in attr? Why are you looking for styleable? Yes, you can directly judge whether attr is used or not.
I made them independent mainly because, for example, there is a variable that is not used in attr and styleable, I just need to find the styleable. This is useful when debugging code. Tech Community Register Log in. Difference between declare-styleable and style in Android. FaceBook Share. Connect and share knowledge within a single location that is structured and easy to search. I've begun playing around with styles and such in my android applications, and I have gotten everything working so far.
I quite understood the 'style' section of the guide. But, looking around, as in this thread , I can't really figure out the difference between the two declare-stylable and style.
From my understanding declare-styleable takes the attribute specified in it and specifies it as styleable, and then from the code one changes it as he wants. But if this is what it really does, wouldn't it be simpler to just define the attribute in the layout?
Or declare a style specifying it? I think there is only the following difference between declaring an attribute as styleable or not. In attrs. You can use the "styleable" attribute "attrib2" within a style. Again, no namespace is needed here even if a namespace was used in the layout XML.
Let us assume that we do this: we set attrib1 directly in XML, and we set attrib2 in a style. Elsewhere I have seen descriptions stating that " blahblah " must be the name of the custom view class that uses these attributes, and that you need to use a namespace to refer to your custom attributes in the layout XML. But none of this seems to be necessary.
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