declare-styleable | 易学教程

Declaring styleable attributes in Android

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There's precious little documentation about the declare-styleable tag by which we can declare custom styles for components. I did find this list of valid values for the format attribute of the attr tag. While that's nice as far as it goes, it doesn't explain how to use some of those values. Browsing attr.xml (the Android source for the standard attributes), I discovered that you can do things like:  <attr name="textColorPrimary" format="reference|color" /> The format attribute can evidently be set to a combination of values. Presumably the format

Android library project uses declare-styleable — how to compile?

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问题 I have a custom preferences control that I have defined a few attributes for in values/attrs.xml. Just to focus the conversation, here is an example of attributes that could be found in values/attrs.xml: <?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="MyCustomView"> <attr name="android:text"/> <attr name="android:textColor"/> <attr name="extraInformation" format="string" /> </declare-styleable> </resources> To use the attributes, you use an xmlns tag where you want

ERROR: In <declare-styleable> MenuView, unable to find attribute android:preserveIconSpacing

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I had created an app and when tried to run,get an error like this. ERROR: In <declare-styleable> MenuView, unable to find attribute android:preserveIconSpacing Problems and at end of R.java please help me to fix this issue I had the same problem in Eclipse, and fixed it by changing the API level by... Right Clicking on the project Open PROPERTIES > ANDROID Changed the API level down to the one I had been using up to now. I think I was having the problem because I had just switched from API 21 to 22. I had read earlier that API 22 was trouble-some, so people were not using it. Hope that helps.

Difference between declare-styleable and style

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问题 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,