Android Default Icons

                                                            
                             Android Default Drawable Icon is enough for Android App Development ! Basically all the Android phones supports icon based on resolution of phone(screen density).If we use some other icons we need to resize and put in drawable based on size of an Image. Most of the cases icons are really looks bad after resizing the icons.here there is another option  for Icons.

       Android Provides Default Drawable Icons we can use that. it didn't need any specific size or something .we just using like this @android/drawable/App_Icon_name . Android are Categorize the icons based on screens like Setting Screen , Menus , Media,Dialog (ic_media_play, ic_menu_send , ic_dialog_alert..ect) . And also the provide some default colors , String , Array , Dimensions , Style Theme , Layout ListItem .We just use like this @android/ they show all items whatever availabe in default.

                     - Default icons are automatically adapt for screen resolution

                    

                     - It updates automatically based on their android version

             In Android Market have the app about this default drawables (android.R) .the above link is to download that App for Reference : https://play.google.com/store/apps/details?id=org.routine_work.android_r&hl=en         

         

              

Android 5.0, Lollipop

               Google’s next version of Android to be released, referred to as Android L, comes with many new features and capabilities. There are also a few noteworthy security updates. Google representatives emphasized that they are taking security seriously and are now offering security updates that will be pushed out every six weeks for the Android OS through the Google Play Service. This means that issues, such as the recent OpenSSL vulnerability, can be fixed for most devices in a timely manner, reducing the attack window.

One of the most notable security features for everyday users is the “personal unlock” feature for Android L smartphones. This feature allows the user to setup a trusted environment where no passcode is required to unlock their Android device. The trusted environment can be a defined location based on GPS coordinates or the presence of a trusted Bluetooth device, like a smartwatch. This handy feature should encourage more users to enable security precautions on their phones. 

Get Started on Android 5.0

click here : http://developer.android.com/preview/index.html