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Tizen web app works on simulator, but doesn't work on gear 3

 原文  2018-05-26 17:35:48  2   1    javascript/ tizen

Question

I'm trying to develop an app that reads data from the acceleration sensor, and save it on a text file. Using web app development, I've managed to make the app work on the emulator, but when I tried it on Samsung Gear 3 frontier, it didn't work. Can some figure out what I did wrong? Below are the html and the java script code. 

 <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width,user-scalable=no"> <title>Basic</title> <link rel="stylesheet" href="lib/tau/wearable/theme/default/tau.min.css"> <link rel="stylesheet" media="all and (-tizen-geometric-shape: circle)" href="lib/tau/wearable/theme/default/tau.circle.min.css"> <!-- load theme file for your application --> <link rel="stylesheet" href="css/style.css"> </head> <body> <div class="ui-page ui-page-active" id="main"> <header> <h2 class="ui-title">TAU Basic</h2> </header> <div class="ui-content ui-content-padding"> <p id="readings"> Basic </p> </div> </div> <script src="lib/tau/wearable/js/tau.min.js"></script> <script src="js/app.js"></script> <script src="js/lowBatteryCheck.js"></script> <script src="js/circle-helper.js"></script> </body> </html>

Java script code: 

 function init() { console.log("app started"); document.getElementById("readings").innerHTML="Starting"; accelerationSensor=tizen.sensorservice.getDefaultSensor("ACCELERATION"); if (accelerationSensor){ console.log("Sensor captured"); } /* Update the clock hands every second */ accelerationSensor.start(onsuccessCB); setInterval(function() { updateTime(); }, 1000); } window.onload = init(); function onGetSuccessCB(sensorData) { var datetime = tizen.time.getCurrentDateTime(); var Date = ("0" + datetime.getHours()).slice(-2) + ":" + ("0" + datetime.getMinutes()).slice(-2) + ":" + ("0" + datetime.getSeconds()).slice(-2); console.log(Date); console.log("######## Get acceleration sensor data ########"); console.log("x: " + sensorData.x); console.log("y: " + sensorData.y); console.log("z: " + sensorData.z); x = sensorData.x; y = sensorData.y; z = sensorData.z; tizen.filesystem.resolve("documents", function(dir) { var newFile = dir.resolve("newFilePath.txt");; newFile.openStream( "a", function(fs) { fs.write(Date+"\\tx:"+x+"\\ty:"+y+"\\tz:"+z+"\\n"); fs.close(); }, function(e) { console.log("Error " + e.message); }, "UTF-8"); },function(){ document.getElementById("readings").innerHTML="Error"; }); document.getElementById("readings").innerHTML="Reading"; } function onerrorCB(error) { console.log("error occurred: " + error.message); } function onsuccessCB() { console.log("acceleration sensor start"); var datetime = tizen.time.getCurrentDateTime(); var hour = datetime.getHours(), var minute = datetime.getMinutes(), var second = datetime.getSeconds(); tizen.filesystem.resolve("documents", function(dir) { newFile = dir.createFile("newFilePath.txt"); newFile.openStream( "w", function(fs) { fs.write(hour+":"+minute+":"+second+"\\tstart of recording \\n"); fs.close(); }, function(e) { console.log("Error " + e.message); }, "UTF-8"); },function(){ document.getElementById("readings").innerHTML="Error"; }); } function updateTime() { accelerationSensor.getAccelerationSensorData(onGetSuccessCB, onerrorCB); } (function () { window.addEventListener("tizenhwkey", function (ev) { var activePopup = null, page = null, pageid = ""; if (ev.keyName === "back") { activePopup = document.querySelector(".ui-popup-active"); page = document.getElementsByClassName("ui-page-active")[0]; pageid = page ? page.id : ""; if (pageid === "main" && !activePopup) { try { tizen.application.getCurrentApplication().exit(); } catch (ignore) { } } else { window.history.back(); } } }); }());

Thanks in advance.

1 answers

solution1
 2  2018-06-06 03:39:08

I've managed to find the solution, and I post it for helping others who would face the same issue.

It turns out that there is no acceleration sensor in S3, and everything works fine when I change the sensor from Acceleration to linear_acceleration. The codes for both html and javascript are as follow: 

 <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width,user-scalable=no"> <title>Basic</title> <link rel="stylesheet" href="lib/tau/wearable/theme/default/tau.min.css"> <link rel="stylesheet" media="all and (-tizen-geometric-shape: circle)" href="lib/tau/wearable/theme/default/tau.circle.min.css"> <!-- load theme file for your application --> <link rel="stylesheet" href="css/style.css"> </head> <body> <div class="ui-page ui-page-active" id="main"> <header> <h2 class="ui-title">TAU Basic</h2> </header> <div class="ui-content ui-content-padding"> <p id="readings"> Basic </p> </div> </div> <script src="lib/tau/wearable/js/tau.min.js"></script> <script src="js/app.js"></script> <script src="js/lowBatteryCheck.js"></script> <script src="js/circle-helper.js"></script> </body> </html>

The javascript: 

 var accelerationSensor; function onsuccessCB() { console.log("acceleration sensor start"); var datetime = tizen.time.getCurrentDateTime(); var hour = datetime.getHours(); var minute = datetime.getMinutes(); var second = datetime.getSeconds(); tizen.filesystem.resolve("documents", function(dir) { var newFile = dir.createFile("newFilePath.txt"); newFile.openStream( "w", function(fs) { fs.write(hour + ":" + minute + ":" + second + "\\tstart of recording \\n"); fs.close(); document.getElementById("readings").innerHTML = "Reading"; }, function(e) { document.getElementById("readings").innerHTML = "File Error"; }, "UTF-8"); }); } function init() { console.log("app started"); document.getElementById("readings").innerHTML = "Starting"; accelerationSensor = tizen.sensorservice.getDefaultSensor("LINEAR_ACCELERATION"); document.getElementById("readings").innerHTML = "Starting1"; if (accelerationSensor) { console.log("Sensor captured"); document.getElementById("readings").innerHTML = "Acceleration"; } else { document.getElementById("readings").innerHTML = "Error"; } /* Update the clock hands every second */ accelerationSensor.start(onsuccessCB); document.getElementById("readings").innerHTML = "onsuccessCB done"; console.log("onsuccessCB done"); setInterval(function() { updateTime(); }, 1000); } window.onload = init(); function onGetSuccessCB(sensorData) { var datetime = tizen.time.getCurrentDateTime(); var Date = ("0" + datetime.getHours()).slice(-2) + ":" + ("0" + datetime.getMinutes()).slice(-2) + ":" + ("0" + datetime.getSeconds()).slice(-2); console.log(Date); console.log("######## Get acceleration sensor data ########"); console.log("x: " + sensorData.x); console.log("y: " + sensorData.y); console.log("z: " + sensorData.z); var x = sensorData.x; var y = sensorData.y; var z = sensorData.z; tizen.filesystem.resolve("documents", function(dir) { var newFile = dir.resolve("newFilePath.txt"); newFile.openStream( "a", function(fs) { fs.write(Date + "\\tx:" + x + "\\ty:" + y + "\\tz:" + z + "\\n"); fs.close(); }, function(e) { console.log("Error " + e.message); }, "UTF-8"); }, function() { document.getElementById("readings").innerHTML = "Error"; }); document.getElementById("readings").innerHTML = "Reading"; } function onerrorCB(error) { console.log("error occurred: " + error.message); } function updateTime() { accelerationSensor.getLinearAccelerationSensorData(onGetSuccessCB); } (function() { window.addEventListener("tizenhwkey", function(ev) { var activePopup = null, page = null, pageid = ""; if (ev.keyName === "back") { activePopup = document.querySelector(".ui-popup-active"); page = document.getElementsByClassName("ui-page-active")[0]; pageid = page ? page.id : ""; if (pageid === "main" && !activePopup) { try { tizen.application.getCurrentApplication().exit(); } catch (ignore) {} } else { window.history.back(); } } }); }());

The above code will get linear_acceleration sensor readings, and save them to a text file in "Documents" folder. You need filesystem.read and filesystem.write privileges to have access to "Document" folder.

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