Bringing the Open Web & APIs to mobile devices with Firefox OS - SpainJS
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Firefox OS uses open web technologies like HTML5, CSS and JavaScript to build apps that run on mobile devices. It provides access to device APIs for features like vibration, screen orientation, geolocation and more. Apps can be installed from the Firefox Marketplace and have different security levels depending on their capabilities and access to device features. The document provides examples of how to use APIs for battery status, screen orientation, vibration and other device functions from within Firefox OS apps.
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Bringing the Open Web & APIs to mobile devices with Firefox OS - SpainJS
- 1. Bringing the Open Web & APIs to mobile devices with Firefox OS
- 8. @robertnyman
- 9. Mozilla is a global non- profit dedicated to putting you in control of your online experience and shaping the future of the Web for the public good
- 13. Using HTML5, CSS and JavaScript together with a number of APIs to build apps and customize the UI. Firefox OS
- 14. "Movistar to offer the ZTE Open for €69, including €30 of balance for prepaid customers and a 4GB microSD card" Launch!
- 15. Foxconn
- 17. Open Web Apps
- 18. HTML5 + manifest file (JSON)
- 20. { "version": "1", "name": "Firefox OS Boilerplate App", "launch_path": "/index.html", "description": "Boilerplate Firefox OS app", "icons": { "16": "/images/logo16.png", "32": "/images/logo32.png", "48": "/images/logo48.png", "64": "/images/logo64.png", "128": "/images/logo128.png" }, "developer": { "name": "Robert Nyman", "url": "http://robertnyman.com" }, "installs_allowed_from": ["*"], "default_locale": "en" }
- 22. Packaged & hosted apps
- 23. WebAPIs
- 25. Security Levels
- 26. Web Content Regular web content Installed Web App A regular web app Privileged Web App More access, more responsibility Certified Web App Device-critical applications
- 28. "permissions": { "contacts": { "description": "Required for autocompletion in the share screen", "access": "readcreate" }, "alarms": { "description": "Required to schedule notifications" } }
- 29. PERMISSIONS
- 30. Vibration API (W3C) Screen Orientation Geolocation API Mouse Lock API (W3C) Open WebApps Network Information API (W3C) Battery Status API (W3C) Alarm API Web Activities Push Notifications API WebFM API WebPayment IndexedDB (W3C) Ambient light sensor Proximity sensor Notification REGULAR APIS
- 32. var battery = navigator.battery; if (battery) { var batteryLevel = Math.round(battery.level * 100) + "%", charging = (battery.charging)? "" : "not ", chargingTime = parseInt(battery.chargingTime / 60, 10), dischargingTime = parseInt(battery.dischargingTime / 60, 10); // Set events battery.addEventListener("levelchange", setStatus, false); battery.addEventListener("chargingchange", setStatus, false); battery.addEventListener("chargingtimechange", setStatus, false); battery.addEventListener("dischargingtimechange", setStatus, false); }
- 34. // Portrait mode: screen.mozLockOrientation("portrait"); /* Possible values: "landscape" "portrait" "landscape-primary" "landscape-secondary" "portrait-primary" "portrait-secondary" */
- 35. VIBRATION API
- 36. // Vibrate for one second navigator.vibrate(1000); // Vibration pattern [vibrationTime, pause,…] navigator.vibrate([200, 100, 200, 100]); // Vibrate for 5 seconds navigator.vibrate(5000); // Turn off vibration navigator.vibrate(0);
- 37. DEVICEPROXIMITY
- 38. window.addEventListener("deviceproximity", function (event) { // Current device proximity, in centimeters console.log(event.value); // The maximum sensing distance the sensor is // able to report, in centimeters console.log(event.max); // The minimum sensing distance the sensor is // able to report, in centimeters console.log(event.min); });
- 40. window.addEventListener("devicelight", function (event) { // The lux values for "dim" typically begin below 50, // and the values for "bright" begin above 10000 console.log(event.value); });
- 41. Device Storage API Browser API TCP Socket API Contacts API systemXHR PRIVILEGED APIS
- 43. var deviceStorage = navigator.getDeviceStorage("videos");
- 44. var storage = navigator.getDeviceStorage("videos"), cursor = storage.enumerate(); cursor.onerror = function() { console.error("Error in DeviceStorage.enumerate()", cursor.error.name); }; cursor.onsuccess = function() { if (!cursor.result) return; var file = cursor.result; // If this isn't a video, skip it if (file.type.substring(0, 6) !== "video/") { cursor.continue(); return; } // If it isn't playable, skip it var testplayer = document.createElement("video"); if (!testplayer.canPlayType(file.type)) { cursor.continue(); return; } };
- 45. WEB ACTIVITIES
- 46. Interacting with the camera
- 48. var activity = new MozActivity({ name: "view", data: { type: "image/png", url: ... } }); activity.onsuccess = function () { console.log("Showing the image!"); }; activity.onerror = function () { console.log("Can't view the image!"); };
- 49. { "activities": { "share": { "filters": { "type": ["image/png", "image/gif"] } "href": "sharing.html", "disposition": "window" } } }
- 50. navigator.mozSetMessageHandler("activity", function (a) { var img = getImageObject(); img.src = a.source.url; // Call a.postResult() or a.postError() if // the activity should return a value });
- 51. Future APIs
- 53. Resource lock API UDP Datagram Socket API Peer to Peer API WebNFC WebUSB HTTP-cache API Calendar API Spellcheck API LogAPI Keyboard/IME API WebRTC FileHandle API Sync API
- 54. Web Apps from Mozilla
- 56. Dialer Contacts Settings SMS Web browser Gallery Video Player Music Player E-mail (POP, IMAP) Calendar Alarm Clock Camera Notes First Run Experience Notifications Home Screen Mozilla Marketplace System Updater Localization Support
- 58. Get started
- 66. Go have some fun!