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