String-based Socket communication classes

I recently removed an old post called "A little framework for TCP client-server communication".

That's why I think it was not so clear and useful.
Today I propose the "engine" I used.

I used those libs for some projects like:

• A push server for Android clients
• A server that controls some computer's feature like volume, services, tasks, also file exchange
• A computer's mouse controller
• Data exchange between two different processes

I think it's very useful, scalar and powerful for simple projects.

It's basically composed by two class and two interfaces.

class Server: wraps a ServerSocket object and manages incoming client connections, and messages through an interface called OnServerEventsListener.
interface OnServerEventsListener: defines some standard events like, adding a client, receiving messages, receiving errors of Server or from Clients.
class Client: wraps a Socket object and manages a simple communication through an interface called OnClientEventsListener.
interface OnClientEventsListener: defines events like connecting, disconnecting, on receiving message, on exception generated.

SQLite wrapper based on java.lang.reflect

In Android development, data persistence is often realized with SQLite. Sometimes the act of preparing all the classes, the adapter, every kind of query (CRUD) and rewrap into model,is a bit frustrating. It's like something already done, to do again every time.

I never see this kind of class on the web, so I decided to make my own one.

What I'm talking about?

A class that simplifies the common use of SQLite with a friendly usage (inspired by .NET's LINQ one).
SQL Scripts are defined by the model, so you need to supply the object instance or just its class.

For the moment I provided:

• select (distinct, count,where, limit, order by)
• delete (where)
• insert
• transactions

Some use of java.lang.reflect

You should remember it... a private member of a private class or a private method of a library... it's surely inaccessible at compile-time... but it's not completely inaccessible at run-time :)...


This is not the only purpose of java.lang.reflect but it's good to know how to use the main classes of this namespace.

Catch LogCat programmatically or export it to file

UPDATE - THIS POST IS VALID ONLY FOR API < 16 (ANDORID 4.1 JELLY BEAN), OTHERWISE YOU NEED ROOT PERMISSION 

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Let'see how to catch LogCat from code.
It's very simple, just remember how to call it, and read his input stream.


LogCat process can be launched with parameters such as -help for help,
-s for silent filter,
-d for dump
-c for clear and,
-f for file export.

The (Nyan)LogCat

A month view calendar for WP7

We know that wp7 is a bit young but it has a good potential.
We also know that its youth means, for developers, poor os-controls, poor API etc...

Last week I had to demonstrate that WP7 is comparable to iOS and Android. 

I had to realize a sort of "accounting app" already done in iOS and Android.

I had no significant problems while working except for some limits of SDK.

SDK doesn't provide a datetime picker, a combo box or list picker not even a calendar.

I found on the web a Silverlight for Windows Phone Toolkit that brings some controls I've just mentioned.

No track of a calendar :(

I found only 1 calendar for wp7 on web but it didn't like me.... So..
I decided to make my own :)

Fixed layout for PhoneApplicationPage

As a beginner in WP7 I found some issues for my first applications.
One of those problems I had was the hated "fixed layout" of a page.

It's a topic already discussed (view the post for Android) but in this case, it's a bit different.

Suppose we want a "fixed header and footer" for every page, how do you do it?

A little framework for TCP client-server communications (part2)

Here we are for the second part of this article.  I remeber to everybody that this little framework is not created for market, distrubution or diffusion. (Not even for best practices)

Let's start with some example code!

On the base of what I wrote in the first part, let' see how to create a simple server with JRR Framework.

ResponseManager server = new ResponseManager(8888); //8888 is the listening port
server.setConsoleLogEnabled(true); //enable printing log on the console
server.start(); //start listening