Android, density independent pixel (dp) to pixels(px)

Hola, It's highly recommended to use (dp/dip) when defining UI layout, to express layout dimensions or position in a density-independent way.But, how can we specify the dimensions in (dp) programmatically? The answer is: float android.util.TypedValue.applyDimension(int unit, float value, DisplayMetrics metrics) Where (as mentioned in the documentation): unit is the unit to convert from. value...

Read More [...]

Posted in Android

iOS6, Rotation.

Hi, it's been a while since I posted some thing. Ok, This post is to fix the auto-rotation problem that has been around since the release of iOS6. To be clear, the problem is that iOS6 doesn't support - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation; any more. And hence, our apps/code won't behave as expected any more. In this post, I'll be using...

Read More [...]

Posted in iOS, iOS6

Android: Saving cache files on external storage.

Hi, If you want to save some files on external storage and you want those files to be removed on application un-installation, then do as the documentation says ;) If you're using API Level 8 or greater, use getExternalCacheDir() to open a File that represents the external storage directory where you should save cache files. If the user uninstalls your application, these files will be automatically...

Read More [...]

Posted in Android

Android: Create an image Viewer using ViewPager.

Hi, This post is for those guys digging the Internet trying to find out how to create an image viewer. And I managed to do that using ViewPager. First, you'll need to download the support package using the SDK manager. Then, set up the project to use the library, as mentioned here. OR, if you use Eclipse, you can simply right click your project > Android Tools > Add Compatibility Library. I'll...

Read More [...]

Posted in Android

Android: Create a simple horizontal image list.

Hi, In this post we'll create our horizontal image List using HorizontalScrollView. First,  create the layout. main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <HorizontalScrollView...

Read More [...]

Posted in Android

Android: Layout params programmatically.

Hi, This is a concise tip. To set the width, height and gravity for -say - a LinearLayout, do the following: LinearLayout linearLayout = (LinearLayout)findViewById(R.id.movieDetails_linearLayout); linearLayout.setLayoutParams(new ParentView.LayoutParams(LayoutParams.WRAP_CONTENT , LayoutParams.WRAP_CONTENT,Gravity.CENTER_HORIZONTAL)); Note...

Read More [...]

Posted in Android

Android: Play HTML5 Youtube videos inside a WebView !!!

Hi, I've never imagined that playing a HTML5 Youtube video inside a WebView would be such a tedious task. I even didn't think of it as a separate task. The problem is that the video doesn't play. YES, it's as simple as that. Any way, I found a work around solution that causes the video to run inside the media player instead of the WebView and of-course instead...

Read More [...]

Posted in Android

Galaxy SII, Forgot account password and want to reset to factory settings

Hi, The problem can be solved by opening the keypad and pressing the following keys: *2767*3855# CAUTION: Once you press the ( # ) key, the device will start the process. No menus will appear and No options will be available, The process will just start. The original thread is here. That's it, don't hesitate to comment, to share your knowledge and to correct me.&nb...

Read More [...]

Posted in Tech

How does Google's WiFi location based services work??

Hi, I was wondering how Google can find my location when I'm using WiFi, and I kept digging the Internet to find an answer. To collect information about WiFi access points, Google uses information provided by   cellphone handsets. computer applications. radio receivers attached to vehicles. Google used wardriving to collect data about access points. It used the same vehicles...

Read More [...]

Posted in Tech

Android: Push notifications using Urban-Airship's push library

This Post Is Deprecated ... Hi, Once upon a time I was developing an application for platforms starting from 2.1 ( API level 7 ) and it happened that I needed the app to receive notifications from the server. Actually, I achieved this using C2DM directly ( with no external libraries ) by following this tutorial, AND then I  achieved this  once again...

Read More [...]

Posted in Android

Objective-C: Hello World!

Hi, This is the famous (Hello, World!) example using the Objective-C programming language. #import <Foundation/Foundation.h> int main(int arg, const char * argv[]){ NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog(@"Hello, World!"); [pool drain]; return 0; } Explanation: #import: It's used to include what's in a file (classes, functions,...

Read More [...]

Posted in Objective-C

Android: Enable/Disable 3G programmatically

Here we go again, Hint: this post will be just a wrap up to what you can find here. Unfortunately, the data-connection enable/disable APIs are not exposed to the user, So we'll access them using JAVA reflection. Starting from API level 8 (platform 2.2) we can use the following snippet: final ConnectivityManager conman = (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);...

Read More [...]

Posted in Android

Hello World !

This is my first blogging activity ever and I feel so excited about it. So, as a warm up, let's get our hands dirty in some ANDROID issue that confused me for a while. SlidingDrawer is a very interesting and useful tool that acts the same as a desk drawer. It contains a layout but the layout, and of course its contents, can't be seen except if the drawer is openned/dragged. well, what I found...

Read More [...]

Posted in Android