Google 2013 | SubramanyamRaju Xamarin & Windows App Dev Tutorials

Monday 23 December 2013

How to Launch setting page from Windows Phone 8 C# app

Introduction:

Windows Phone application is not allowed to modify some of the device’s settings directly.As a developer we can't access the phone functionality directly.And so alternative way  is "launch the settings screen " from the our app.However one of the most wanted functionality is added in "WindowsPhone 8 sdk" is "URI schemes" 

This topic lists the URI schemes that can be used to launch built-in apps. Many of the apps built into Windows Phone can be launched from your app by calling LaunchUriAsync(Uri), passing in a URI that uses the scheme associated with the app you want to launch. 


Thursday 19 December 2013

Customizing windowsphone 8 calender control c#

Introduction

Firstly i would like to say very thanks to http://wpcontrols.codeplex.com/, here we can get calender control for windows phone,which is can support both windowsphone 7.1 and windowsphone 8 OS.I was really impressed by this open source custom control and i would like to say very thanks to making source code available in codeplex.It will be more helpful for developers to customize calender as per their requirement .By the way i want to share a few things about "How to customize this windowsphone calender control"

Tuesday 17 December 2013

Image loader in windows phone 8 ListBox

Introduction

Recently lot of queries has been asked which is regarding to image loader.In general there is a chance of requirement in windows phone  is need to set image loader when image getting from xaml feed or web service responce.Beacuse it will take some time to get our image from the web service and loaded completly.And so from the user point of view we need to put some progress bar or loader for image until it gets loaded completly.However finally i had come up with my best solution with custom progress overrellay.

Friday 13 December 2013

How to submit windows phone app to windows phone marketplace

Introduction

Before going submit your app to windows phone store,it would be best practices to read app polices thoroughly from
App policies for windows phone app submission .  Make sure check once properly about "app navigation's,push notification settings,bing map control, location services, context menu,content visible,App Icon" policies.

Note:This article is updated on August 26,2014

Submitting app to windows phone market is very easy,but to make certification process is little bit difficult.We need to meet the app policies,otherwise app will be rejected.And so please make note once following important policies which are major policies to get app will rejected/accepted

Tuesday 10 December 2013

Windows Phone 8 development shortcut keys with keyboard

Introduction

The Windows Phone 8  SDK comes with some shortcut keys for emulator .It would be very helpful for us to speedup our development process.1.WindowsPhone Emulator Screen unlock

    1.1. To lock the screen in the emulator by using the keyboard
  •     With the emulator open, press F12 on your computer keyboard twice.
    The F12 key emulates the power button on the phone. The first key press turns off the display. The second key press turns the display on again with the lock screen engaged.
    You can unlock the screen by using the mouse to slide the lock screen upward.

Soap Parsing in Windows Phone 8 c#

Introduction

SOAP, originally defined as Simple Object Access Protocol, is a protocol specification for exchanging structured information in the implementation of Web Services in computer networks. It relies on XML Information Set for its message format, and usually relies on other Application Layer protocols, most notably Hypertext Transfer Protocol (HTTP) or Simple Mail Transfer Protocol(SMTP), for message negotiation and transmission.

Monday 2 December 2013

Working with both TextWrapping&TextTrimming at a time in WindowsPhone c#,xaml

Introduction

In windowsphone TextTrimming property has no effect unless the TextWrapping property is set to NoWrap.Both TextWrap and TextTrimming properties works if and only if we set the height & width on our textblock. Yes it is very important to set height&width of textblock while we attempting both properties at a time.

Saturday 30 November 2013

Parsing Json array objects in windowsphone c#

Introduction

HTTP-based Web services frequently use JavaScript Object Notation (JSON) messages to return data back to the client. JSON objects can easily be instantiated in JavaScript, without parsing logic, which makes it a convenient format for messages in Web applications.You may get solve this problem using JObject class or any third party,its is not a best solution to use third party.So i come up with my best option is "parsing json using DataContractJsonSerializer".How it is most important concept in wpf,so now i tried this in wp7.

Friday 29 November 2013

Customizing Default RadioButton and CheckBoxes with our images in WindowsPhone C#

Generally it is not possible to set default radiobuttons and checkbox border , pressed state colors in windows phone using xaml,So we need to override the template of both radiobutton & checkboxes grid template.And so we may need to make customizable controls in some requirement with respect of our images.And it is best practice for if client want to know control pressed state with proper image background selection. And for our requirement, expression blend is best suitable tool for customizing radio button s as well as checkboxes and off course it is very flexible for generating customizable xaml of our app UI.
Note:
1)This sample is targeted on  windows phone 7.1
2)Here I am using expression blend 2012 which is comes under wp8 sdk.

Thursday 28 November 2013

Customizing default listbox horizontal scrollviewer in WindowPhone C#

Introduction

Generally it is not possible to showing default listbox scrollviewer in windows phone,it will be showing only if user scroll the listbox item.And so we may need to make customizable scrollbar in some requirement.And it is best practice for user want to how many items will presented in long horizontal list. And for our requiremnt, expression blend is best suitable tool for customizing listbox and off cource it is very flexible for henerating customizable xaml of our app UI.
Note:
1)Sample is targeted on  windows phone 7.1
2)Here I am using expression blend 2012 which is comes under wp8 sdk.

Latest Twitter integration in windows phone 8 c#

Introduction

I am trying to integrate the Twitter app in Windows Phone 8 app. I have downloaded the tweetsharp package from the Nuget but I am not able to get the Twitterservice method named GetRequestToken.Because of  recentlyTwitter API 1.0 was retired  and Twitter  API 1.1 is available now. So I tried many ways which I got in my search ,finnaly got boring and stop doing.Recently i had come with good solutions "Posting tweets using hammock" instead of using tweetsharp.

Tuesday 26 November 2013

Download Image file using WebClient with progress bar status in windowsphone c#.

Introduction

Recently lot of queries has been asked regarding to large image file downloading with progress bar from webservice.In general there is a chance of requirement in windows phone  is need to set progressbar status when image getting from xaml feed or web service responce.Beacuse it will take some time to get our image from the web service and loaded completly.And so from the user point of view it make sense to showing progress bar status or loader for image until it gets loaded completly.However finally i had come up with my best solution with progress bar.
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