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- Images, layout descriptions, binary blobs and string dictionaries can be included
- in your application as resource files. Various Android APIs are designed to
- operate on the resource IDs instead of dealing with images, strings or binary blobs
- directly.
- For example, a sample Android app that contains a user interface layout (Main.xml),
- an internationalization string table (Strings.xml) and some icons (drawable/Icon.png)
- would keep its resources in the "Resources" directory of the application:
- Resources/
- Drawable/
- Icon.png
- Layout/
- Main.axml
- Values/
- Strings.xml
- In order to get the build system to recognize Android resources, the build action should be set
- to "AndroidResource". The native Android APIs do not operate directly with filenames, but
- instead operate on resource IDs. When you compile an Android application that uses resources,
- the build system will package the resources for distribution and generate a class called
- "Resource" that contains the tokens for each one of the resources included. For example,
- for the above Resources layout, this is what the Resource class would expose:
- public class Resource {
- public class Drawable {
- public const int Icon = 0x123;
- }
- public class Layout {
- public const int Main = 0x456;
- }
- public class String {
- public const int FirstString = 0xabc;
- public const int SecondString = 0xbcd;
- }
- }
- You would then use Resource.Drawable.Icon to reference the Drawable/Icon.png file, or
- Resource.Layout.Main to reference the Layout/Main.axml file, or Resource.String.FirstString
- to reference the first string in the dictionary file Values/Strings.xml.
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