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Android: A Programmer's Guide by Jerome DiMarzio

By Jerome DiMarzio

Master the Android cellular improvement platform

Build compelling Java-based cellular purposes utilizing the Android SDK and the Eclipse open-source software program improvement platform. Android: A Programmer's Guide exhibits you, step by step, the right way to obtain and arrange the entire useful instruments, construct and music dynamic Android courses, and debug your effects. realize how you can offer internet and chat services, have interaction with the telephone dialer and GPS units, and entry the newest Google companies. You'll additionally how one can create customized content material prone and database-enable your functions utilizing SQLite.
* set up and configure Java, Eclipse, and Android plugin
* Create Android tasks from the Eclipse UI or command line
* combine websites, photos, galleries, and sounds
* install menus, growth bars, and auto-complete functions
* set off activities utilizing Android Intents, Filters, and Receivers
* enforce GPS, Google Maps, Google Earth, and GTalk
* construct interactive SQLite databases, calendars, and notepads
* try out functions utilizing the Android Emulator and Debug Bridge

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Extra resources for Android: A Programmer's Guide

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This background task can continue running even after the user switches the application. In other words, services can or cannot be bound from the activity. The services can work independently in order to perform a task. However in each case, an intent is used to initiate the services. Role of intent in Broadcast Receiver Intent has a wide usage with Broadcast Receiver. Broadcast Receiver is used to respond to the broadcast messages initiated by any other application or even the system. In this context, we catch the Android message and extract the data in order to show it in our application.

It is an intelligent way of keeping images in the project. As we know that there are various types of devices present in the market that support Android OS. In order to differentiate between these devices, the low resolution images are placed in the ldpi folder for the devices with less resolution. Similarly, the mdpi folder is for the device with medium screen density, hdpi for high density, xhdpi for extra high density, and so on. The images placed in these drawable folders should be uniquely named in order to access them with a single reference from the code.

Thus, Android gives focus focuses on the new activity. The activity can take up the whole screen of the device, or it can also take part of the screen, or it can be dragged as well. Whether it is an activity taking the whole area of a screen or a small part of screen, only one activity is focused at a time in Android. When, any existing activity is stopped, it is pushed into the back stack, which in turn results the next top activity being focused. x versions introduced fragments. Fragments can be referred to as sub-activities, which are embedded in an activity to perform different tasks in a single activity at the same time, unlike activities.

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