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know I'm dumb... really... but what am I missing here - (apart form a screw or two...)
I've never developed an app for a mobile device in my life, but every time I look into it, it seems so incredibly... complicated.
For a native app I suppose I can understand that, but there is much talk now of cross-platform "open" apps built using HTML, CSS and JavaScript as single page applications (SPA's) and then bundled up into some kind of wrapper for the various devices. This should be a simple nut to crack - but even this seems to involve a whole load of sledgehammers...
Suppose I want to build a simple app that asks you to enter your name, click a button, and it will say Hello to you.
I could write this as a simple web-page:
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>Hello you</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script type="text/ecmascript">
function sayHello(){
document.getElementById("ur").innerHTML = 'Hello ' + document.getElementById("txt").value;
document.getElementById("iam").style.display = 'none';
document.getElementById("youare").style.display = 'inline';
}
function goBack(){
document.getElementById("txt").value = '';
document.getElementById("iam").style.display = 'inline';
document.getElementById("youare").style.display = 'none';
}
</script>
</head>
<body>
<div id="iam">
<input type="text" id="txt" style="width:200px;" maxlength="25" />
<input type="button" id="btn" value="Say hello" onclick="sayHello()" />
</div>
<div id="youare" style="display:none;">
<div id="ur"></div>
<input type="button" id="goback" value="< Back" onclick="goBack()" />
</div>
</body>
</html>
SO... my question then is: what else (avoiding sledgehammers) do I need to do to wrap this up as an open cross-platform app for smartphones? Or am I barking up the wrong tree (in the wrong forest, even)...?
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Did you check Xamarin[^]? Using this, you can create native iOS, Android, Windows, and Mac apps in C#. I hope, this might help you.
Vote up or Mark as Answered, if this information helped you.
Kind Regards - Kunal Chowdhury, Windows Platform Development MVP
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Thanks - in the end I found Phonegap[^] which will serve my purpose. What I'm playing with now is trying to avoid the myriad JavaScript libraries that seem obligatory - so much of it seems like using sledgehammers to crack nuts. I'd rather write my own.
Thanks again though.
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Yes, phonegap is another option to try.
Vote up or Mark as Answered, if this information helped you.
Kind Regards - Kunal Chowdhury, Windows Platform Development MVP
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Hi all, I have just joined ios development course in Toronto in Cestar College of Business, Health and Technology. In my knowledge core java is basic for these both. What is the major difference between both these courses. I mean what are the main modules included in these courses. Expecting your replies. Thank you.
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You joined a course that didn't started with pointing out the different approaches of different platforms? Demand your money back! Now!
In iOS the main development is based on Objective-C or Swift (both C-like languages) and not on Java. Even in Android Java used as a language and not as a platform (means no Java libraries presented as part of the development environment).
If you want to target all (most) mobile platforms you should look for cross-platform development tools, like Xamarin Studio or Cordova...
However - I would advise you to take slow steps if this is your first time as developer...Learn basic things unrelated to platform, and then target a single platform and only then go multi-platform...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Hello All,
I have question about testing my web application in window phone. i was made one application in Asp.net(c#) in this application i use Canvas Control for users digital signature. my application working fine in Android and i-phone application . Now i want to test this application on window phone . so there is any way to test application in window phone from my Visual Studio 2012 or any Emulator for that.
Thanks
Sanket
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See if this helps.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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Hi Sanket,
If you are looking for a way to check how your website looks in different browsers (including mobile), checkout https://dev.windows.com/en-us/microsoft-edge/tools/screenshots/[^] and enter the public version of your web address.
Also, you can load your webapp in mobile browser to test it. If you don't have the required device, you can install the Visual Studio Community Edition (FREE)[^] and try directly in the emulator. Hope this helps.
Vote up or Mark as Answered, if this information helped you.
Kind Regards - Kunal Chowdhury, Windows Platform Development MVP
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I’m developing a responsive website to one of my client, while working in local host is there any tool to test responsiveness instead of checking responsive after website is hosted in server.
Also provide method of testing.
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Is this anything to do with Mobile development?
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Does anyone have an estimation for software development cost for mobile gps system?
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Anything from 1 to 1,000,000,000 (dollars, pounds, euros, dinars ...), or maybe even more.
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I agree with your answer, Richard. This can be anything.
Vote up or Mark as Answered, if this information helped you.
Kind Regards - Kunal Chowdhury, Windows Platform Development MVP
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Simple, table based app – $1,000-4,000 – you provide all the content, clear direction, and example apps of what you want it to do. If you know your way around Photoshop, you can probably supply the graphics which will cap this project at $1,500. The additional costs are when you want to GPS locators, Social media integration or bells and whistles like that. Also check out How Much Does It Cost to Build a Mobile App? | Archer Software[^]
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Hi, here i am tring to decode my QR using ZXing but i am not able to decode it. Can any one help me.
Thanks in advance.....
public static String readQRImage(Bitmap bMap)
{
int[] intArray = new int[bMap.Width * bMap.Height];
bMap.GetPixels(intArray, 0, bMap.Width, 0, 0, bMap.Width,bMap.Height);
byte[] bmpresult = intArray.SelectMany(v => BitConverter.GetBytes(v)).ToArray();
LuminanceSource source = new RGBLuminanceSource(bmpresult, bMap.Width, bMap.Height);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Reader reader = new MultiFormatReader();
ZXing.Result result = reader.decode(bitmap);
return result;
}
here result is getting null value.
for encode i have used
ZXing.Mobile.BarcodeWriter writer = new ZXing.Mobile.BarcodeWriter
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i thinking how the phone trace working, just require the phone number so we can trace someone in real time,just like what police or FBI trace the criminal.
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You have been watching too much TV.
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Hello,
I am developing an app for Windows Phone 8.1 by using XALM and C# within a Windows Universal Project.
My problem is that the background images of the buttons do not correctly scale.
I want to use an image as the background of a button and the image should always scale to maximum size of the button, but keep the correct ratio (a circle shall always look like a circle and not like an ellipse!).
I tried this:
<Grid.RowDefinitions>
<RowDefinition Height="17.3*" />
<RowDefinition Height="4.2*" />
<RowDefinition Height="1*" />
<RowDefinition Height="6.025*" />
<RowDefinition Height="4.95*" />
<RowDefinition Height="6.025*" />
<RowDefinition Height="6.5*" />
<RowDefinition Height="1*" />
<RowDefinition Height="6.5*" />
<RowDefinition Height="30*" />
<RowDefinition Height="8*" />
<RowDefinition Height="8.5*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="12*" />
<ColumnDefinition Width="9.5*" />
<ColumnDefinition Width="16.5*" />
<ColumnDefinition Width="15*" />
<ColumnDefinition Width="16.5*" />
<ColumnDefinition Width="9.5*" />
<ColumnDefinition Width="1.0*" />
<ColumnDefinition Width="10.0*" />
<ColumnDefinition Width="1.0*" />
</Grid.ColumnDefinitions>
<TextBox x:Name="textBox1" Grid.Row="8" Grid.Column="1" Grid.ColumnSpan="5" TextAlignment="Center" VerticalContentAlignment="Stretch" HorizontalAlignment="Stretch" Margin="0,0,0,0" TextWrapping="Wrap" VerticalAlignment="Stretch" BorderThickness="0" />
<Button x:Name="buttonMeasurement" Grid.Row="9" Grid.Column="2" Grid.ColumnSpan="3" Content="" HorizontalAlignment="Stretch" Margin="0,0,0,0" VerticalAlignment="Stretch" BorderThickness="0" Click="buttonMeasurement_Click" >
<Button.Background>
<ImageBrush ImageSource="Images/Screen3/START.png" Stretch="UniformToFill"/>
</Button.Background>
</Button>
But the background image of the button is cut at the top and the bottom!
It seems that there is not enough vertical space (height) for the image.
If I use
<ImageBrush ImageSource="Images/Screen3/START.png" Stretch="Uniform"/>
instead of
<ImageBrush ImageSource="Images/Screen3/START.png" Stretch="UniformToFill"/>
then the image is not cut and looks OK, but only on 16:9 devices such as Lumia 640 XL.
On 15:9 devices auch as Lumia 520 there is a distortion: a circle looks like an elipse!
The image is not correctly scaled: the aspect ratio is not perserved!
What did I wrong?
Thanks for any hints!
Best wishes,
Miroslav
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i have C# Windows-Mobile program, that open frmWork form - from Main form.
my Forms Directed for:
WindowStat = Maximized
TopMost = True
FormBorderStyle = None
from Form1 to Form2 i do something like this:
this.TopMost = false;
Form FG = new frmWork();
FG.ShowDialog();
this.TopMost = true ;
i try allso do this:
Form FG = new frmWork();
FG.ShowDialog();
i try on frmWork to do something like this:
this.BringToFront();
this.TopMost = true;
But unfortunately nothing helps, Sometimes the form is opened below the main form and can not see it.
I'd love to get direction to solve the problem
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Hello,
Could anyone please let me know on urgent basis that how should I use the printer in the Universal windows 10 app in the visual studio 2015.
Thanks in advance
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Visual Studio 2015 would work also.