By James Sheusi
We're witnessing an explosion within the use of hand held cellular units all over the world. fresh polls have proven that many of us personal and use a couple of cellular equipment, and a few use as many as 3 or 4. clever telephones, capsules, and hand-held online game units are ubiquitous. The Android working method (OS)--an open-source OS with Linux at its core--is an ever-more-popular OS on those units. ANDROID software improvement FOR JAVA PROGRAMMERS presents an excellent, quick-start educational for an individual drawn to constructing Android cellular machine functions, from the coed or hobbyist conversant in Java, to the skilled programmer eager to input the cellular gadget software industry. as the Android improvement software program offers an emulator software, the reader doesn't have to personal an Android cellular equipment to use this ebook. even if the code awarded within the e-book can be utilized to provide entire working functions, the objective is to encourage the reader to deliver his personal cellular program principles to fact very quickly. The ebook is geared up in a logical, evolutionary demeanour beginning with configuration of the advance setting and finishing with entire initiatives. the start chapters disguise uncomplicated software parts and configuration of the Android emulator and easy person interface layout, while later chapters disguise how one can accomplish extra concerned components comparable to use of GPS, images, networking, and databases.
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Extra info for Android Application Development for Java Programmers
6 Running emulator screen. The only caution here is that the string values must conform to what Java permits. For example, certain punctuation must be preceded by the escape character, \. 5. Then click the green icon again and restore the minimized emulator screen. In a moment, the application should restart in the emulator, reflecting your text changes. java file: There is a warning at the top of this file not to change it. Heed that warning. xml, add graphics to the application, and so on. java.
The layout and values subdirectories under res contain XML files. The layout directory contains XML files that configure the screens of the application. The values folder contains values for text strings and a couple of other data types you might use in your application. Assignments can be made here in the XML file, and they will be available throughout the coded application. These XML files together allow you to design the whole user interface without having to write a single line of Java code.
XML documents must have a root element. A single tag pair must surround all other elements of the document. This is the root element. 5. XML attribute values must be quoted using either single or double quotes. xml File As you have seen already, Eclipse creates a functional application as soon as you create a new project; you don’t have to do anything. xml file that Eclipse generates. xml File
Android Application Development for Java Programmers by James Sheusi