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Android app compatible on various version of Android

+1 vote
41 views

Encryption in androib 4.1 and 4.2 varies thus failing the login in 4.2.

posted Apr 25, 2013 by Ajith Balakumar

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1 Answer

0 votes

Not very clear what is your exact problem, however there is a concept of Manifest in the Android to have version comparability.Check if the following link helps -

http://developer.android.com/training/basics/supporting-devices/platforms.html

answer Apr 26, 2013 by anonymous
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I am using D3 Graphs in my Android Hybrid app. When this app runs in browser the it shows perfect result but when i am setup for android mobile and testing on Emulator then it is not showing graphe and in LogCat it shows this error but this error not arise when this app runs in chrome, firefox

file:///android_asset/www/sm_libraries/sm_custome/graphClass.js: Line 21 : ReferenceError: Can't find variable: Gauge

Following is code sample

HTML

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>SHA</title>
    <link rel="stylesheet" href="sm_styles/sm_jquery/jquery.mobile.css"/>
    <script src="sm_libraries/sm_jquery/jquery.js"></script>
    <script src="sm_libraries/sm_jquery/jquery.mobile.js"></script>
    <script src="sm_libraries/sm_angular/angular.js"></script>
    <script src="sm_libraries/sm_angular/jquery-mobile-angular-adapter.js"></script>
    <script src="sm_libraries/sm_angular/sm_controllers/sm_report_controller.js"></script>
    <link href="sm_styles/sm_custome/style.css" rel="stylesheet" type="text/css" />
    <script src="includes/footer.js"></script>
</head>
<body  ng-app="myApp">
    <div data-role="page" id="cb_firstReport" ng-controller="reportModule">
    <div data-role="header" data-position="fixed">
        <a style="display:none"  href="#main" data-role="button" data-iconpos="notext" data-icon="home">Home</a>
        <h3>Calories Burn Report</h3>
        <a data-role="button" data-rel="back" data-iconpos="notext" data-icon="back">Back</a>
    </div>
    <div data-role="content">
        <div class="row-fluid">
            <span style="float:left"><a ng-click="cb_first_Prev()" data-role="button" data-iconpos="notext" data-icon="back">Pervious</a></span>
            <span style="float:right"><a ng-click="cb_first_Next()" data-role="button" data-iconpos="notext" data-icon="forward">Next</a></span>
        </div>
        <span class="datesetter" id="cb_first_ViewDate"></span>
        <div id="firstReport" style="margin-top:20%; margin-left:40%">
            <span id="cb_graphGaugeContainer"></span>
        </div>
        <div>
            <span class="datesetter"><strong>Today, You Burn:: </strong>{{ 1425 }}<strong> Calories</strong></span>
        </div>
    </div>
  </div>

  <script type="text/javascript"  charset="utf-8" src="includes/D3Lib/d3.js"></script>

<script type="text/javascript" charset="utf-8"  src="includes/D3Lib/gauge.js"></script>

<script type="text/javascript" src="sm_libraries/sm_custome/graphClass.js"></script>
</body>
</html>

The Js Class in which it shows error is

// JavaScript Document

var GraphClass =
{
    gauges:[],
    cal:0,
    createGauge:function(name, label, min, max)
    {
        var config = 
        {
           size: 120,label: label,min: undefined != min ? min : 0,max: undefined != max ? max : 100,minorTicks: 5
        }

       var range = config.max - config.min;
       config.yellowZones = [{ from: config.min + range*0.75, to: config.min + range*0.9 }];
       config.redZones = [{ from: config.min + range*0.9, to: config.max }];
       GraphClass.gauges[name] = new Gauge(name + "GaugeContainer", config); // **In this line it shows error in eclipse emulator but correct in browsers**
       GraphClass.gauges[name].render();
   },
createGauges:function()
{
    GraphClass.createGauge("cb_graph", "Calories Burn",0,2600);
    GraphClass.createGauge("cn_graph", "Calories Gain",0,localStorage.getItem("DailyRequiredCalories"));
},
updateGauges:function()
{
    for (var key in GraphClass.gauges)
    {
        var value = GraphClass.getRandomValue(GraphClass.gauges[key]);
        GraphClass.gauges[key].redraw(value);
    }
},
getRandomValue:function(gauge)
{
    var overflow = 0; //10;
    console.log(gauge.config.min+" - "+overflow+" + ( "+gauge.config.max+" - "+gauge.config.min+" + "+overflow*2+")*"+Math.random());
    //return gauge.config.min - overflow + (gauge.config.max - gauge.config.min + overflow*2) *  Math.random();
    return GraphClass.cal;
},
initialize:function(cal)
{
    $('#cb_graphGaugeContainer').empty();
    $('#cn_graphGaugeContainer').empty();
    //alert(cal);
    GraphClass.cal = cal;
    GraphClass.createGauges();
    GraphClass.updateGauges();
    }
}
+2 votes

Similar to HAL for enabling s/w apps development on variety of h/w platforms, can a generic OS abstraction Layer ( OAL) be developed such that the apps written on top be immediately supported on all underlying platform?

IOAL can expore two interfaces. The southbound will expose open APIs towards the underlying OS ( Android/IOS/WIndows/Blackberry) which can then invoke the native APIs on OS. More than APIs the other mechanism of dealing with underlying OS will be embedded in this interface.

The northbound interface will be the standard APIs towards the APPs. This will be uniform across platforms. The OAL will also manage abstracted resources inside as it may be required to manage the underlying OS.

There will be no h/w intelligence/awareness inside this layer. This may puncture the individual power of popular platforms which draw strength from number of apps on it.


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