Java Magazine - May/June 2012

//mobile and embedded /

// second entry is GPS Latitude - 2 bytes bos.write(0x02); bos.write(0x00);

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// data format (rational) - 2 bytes bos.write(0x05); bos.write(0x00);

// number of components ( 2 - degrees and minutes) - 4 bytes bos.write(0x02); bos.write(0x00); bos.write(0x00); bos.write(0x00);

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// offset to data value ( 64) - 4 bytes bos.write(0x40); bos.write(0x00); bos.write(0x00); bos.write(0x00);

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tion to have their own entry (that is why we specified earlier that the number of components for the GPS latitude is 2). We could become even more fine-grained and show seconds as well. In that case, we would need to mark the number of components as 3.

The GPS longitude uses the same format (omitted here for space purposes).

only briefly on the Location API and taking snapshots. We then discussed modifying the image data to hold EXIF metadata information, covered the basics of EXIF, and worked on the code for an actual application. </article>

Conclusion This article combined three separate technologies to modify an image to hold GPS metadata information. We touched

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;; “Getting Started with Touchscreen UIs in Java Platform, Micro Edition” ;; “Working with the XML Parser API — JSR 172” ;; “Working with the Mobile Sensor API”