Download E-books Programming Google Glass: Build Great Glassware Apps with the Mirror API and GDK (2nd Edition) PDF

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By Eric Redmond

This e-book is designed to aid skilled builders fast commence writing
Google Glass purposes with the reflect API. even if this e-book covers
using the interface with Google’s Java replicate shopper code, the replicate API itself
is an HTTP interface with aid for lots of languages. which means many
of the teachings in regards to the reflect API itself can practice to languages past the
simple Java client.
The pertinent code is roofed within the booklet, and the remaining might be downloaded
along with the e-book (or from GitHub.1)
You needn’t be a Java specialist to stick with half considered one of this publication, however it can help
to recognize your approach round the syntax and Eclipse editor. you may as well get
more out of half One if you’re acquainted with Google App Engine, even supposing you
can use any Platform as a carrier (PaaS) or host your personal Glassware applications.
Part calls for a way more intensive wisdom of Java, and there
we’ll be utilizing The Intellij-based Android Studio.

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Read or Download Programming Google Glass: Build Great Glassware Apps with the Mirror API and GDK (2nd Edition) PDF

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It-ebooks. information file erratum • talk about Launching the Balloon count number Scroller from the Menu • 183 simply to make the alternative suppose like a normal Glass interface selection, we play the major click on sound influence, that is simply so simple as calling playSoundEffect(AudioManager. FX_KEY_CLICK) at the audio supervisor item. It’s now not functionally invaluable, however it is sweet UX. as soon as the end result has been set and sound impression has performed, we will finish() this job. yet end to what? And the place are we sending this end result to? we've one final little bit of glue code earlier than our app is whole. Launching the Balloon count number Scroller from the Menu We’ve written a good little bit of code during this bankruptcy, brought a number of new themes, and laid all the items out at the board. Let’s end this puzzle by means of returning to the LiveCardMenuActivity. A menu choice we’ve noticeable prior to is cease, which simply calls stopService, passing an particular cause for the PartyService. The menu is additionally the place we'll release the balloon count number section of the applying, based on our serviette comic strip. this suggests we need to upload a brand new menu merchandise that might release the BalloonCountActivity. Android offers an easy mechanism for launching one job from one other, and ready round for a consequence to come. similar to any time we wish to make our intentions identified, we populate an purpose item, and phone startActivityForResult in addition to a request code. chapter-12/Partify/app/src/main/java/glass/partify/LiveCardMenuActivity. java inner most static ultimate int REQ_CODE_BALLOON_COUNT = a hundred; public boolean onOptionsItemSelected(MenuItem merchandise) { change (item. getItemId()) { case R. identity. cease: go back stopService(new Intent(this, PartyService. class)); case R. identification. balloon_count: purpose balloonCountI = new Intent(this, BalloonCountActivity. class); balloonCountI. putExtra( BalloonCountActivity. EXTRA_CURRENT_COUNT, carrier. getBalloonCount()); startActivityForResult(balloonCountI, REQ_CODE_BALLOON_COUNT); waitingForResult = precise; go back real; default: go back large. onOptionsItemSelected(item); } } www. it-ebooks. details file erratum • speak about Chapter 12. complicated Rendering and Navigation • 184 We’ve given the request code the quantity a hundred, yet so long as the quantity is exclusive inside our software, it’s a sound code. This request code is critical while launching an job, as we’re approximately to determine. while the task known as in startActivityForResult units a end result with the outcome code RESULT_OK and an reason, Android calls the onActivityResult. this lets you reply to no matter what info the referred to as job despatched again. The request code, outcome code, and information saved within the ensuing rationale are all supplied to the strategy. regularly, if the end result code isn’t RESULT_OK, we simply end the menu task. anything went incorrect. Then, reckoning on the request code, we practice a few motion. when it comes to REQ_CODE_BALLOON_COUNT, we extract the EXTRA_BALLOON_COUNT worth, and use it to set the balloon expect our provider. chapter-12/Partify/app/src/main/java/glass/partify/LiveCardMenuActivity.

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