29 lines
1.4 KiB
Markdown
29 lines
1.4 KiB
Markdown
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# Hello World Kindlet
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This is an example Kindlet written for the Kindle 4 NT. It only contains a text
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area. It can be used to test a development environment.
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## Requirements
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If using the `signJar` task, put developer.keystore in the root of the project.
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This is not necessary when signing through other means, such as the command
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line. The `signJar` task assumes the developer.keystore is the shared developer
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keystore.
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For compilation, `Kindlet-1.3.jar` needs to be placed in the `libs` directory.
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`Kindlet-1.3.jar` is part of the KDK for the Kindle 4 NT. If you have access to
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the root filesystem (for instance, via SSH), you can find it in
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`/opt/amazon/ebook/lib`. This is not included in the repository.
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## Compilation
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Use the `jar` gradle task to compile the project into a jar file. The Kindle
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will refuse to open the Kindlet unless you sign the resulting jar, which you
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can do with the `signJar` task. These tasks will generate warnings because of
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the use of legacy Java versions and insecure signing algorithms, but the use
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of these old versions are necessary because the Kindle itself uses these old
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versions and algorithms.
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## Installation
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Once you have a signed jar, you can place it in `/mnt/us/documents` on the
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Kindle with the `azw2` extension instead of `jar`. In USB Drive Mode, you
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can simply place it in the `documents` folder on the Kindle. The Kindlet will
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appear on the home page, denoted with the `dev` tag.
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