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By Gregory M. Travis
This consultant to JDK 1.4 presents a whole reference software and is the reason and illustrates using the APIs. It offers tips about transitioning to the innovations of model 1.4.
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starting Android four is an replace to starting Android three, initially written via Mark Murphy. it's your first step at the route to growing marketable apps for the burgeoning Android industry, Amazon's Android Appstore, and extra. Google’s Android operating-system has taken the by means of hurricane, going from its humble beginnings as a cellphone working approach to its present prestige as a platform for apps that run throughout a gamut of units from telephones to pills to netbooks to televisions, and the record is bound to develop.
shrewdpermanent builders will not be sitting idly by way of within the stands, yet are leaping into the sport of constructing cutting edge and salable purposes for this fast-growing, cellular- and consumer-device platform. If you’re now not within the video game but, now's your probability!
starting Android four is clean with info at the most up-to-date new release of the Android platform. commence in the beginning through fitting the instruments and compiling a skeleton app. go through developing layouts, using widgets, taking person enter, and giving again effects. quickly you’ll be growing cutting edge functions concerning multi-touch, multi-tasking, location-based function units utilizing GPS.
You’ll be drawing information stay from the web utilizing internet prone and delighting your shoppers with life-enhancing apps. now not because the computer period first started has there been this a lot chance for the typical developer. What are you expecting? seize your replica of starting Android four and start!
<h3>What you’ll learn</h3> * strengthen Java-based cellular purposes and video games for a variety of telephones and units.
* Create consumer interfaces utilizing WebKit and the Android widget framework.
* construct place- and map-based functions drawing on reside feeds over the net.
* include actions, companies, content material services, and broadcast receivers into your functions.
* aid a number of Android types, a number of display sizes, and different device-specific features.
* construct and adventure the array of recent WebM video and different multimedia APIs for Android and extra.
Who this publication is for
starting Android four is geared toward programmers new to Android software improvement who wish to create marketable purposes for the burgeoning marketplace of phone, capsule, and different Android machine clients.
desk of Contents * the large photo
* tips to start
* Your First Android venture
* reading Your First undertaking
* a section approximately Eclipse
* bettering Your First venture
* Rewriting Your First venture
* utilizing XML-Based Layouts
* making use of uncomplicated Widgets
* operating with bins
* The enter process Framework
* utilizing choice Widgets
* Getting Fancy with Lists
* nonetheless extra Widgets and boxes
* Embedding the WebKit Browser
* employing Menus
* exhibiting Pop-up Messages
* dealing with job Lifecycle occasions
* dealing with Rotation
* facing Threads
* growing rationale Filters
* Launching actions and Sub-Activities
* operating with assets
* Defining and utilizing kinds
* dealing with a number of reveal Sizes
* Introducing the Honeycomb UI
* utilizing the motion Bar
* Fragments
* dealing with Platform adjustments
* gaining access to documents
* utilizing personal tastes
* coping with and gaining access to neighborhood Databases
* Leveraging Java Libraries
* speaking through the web
* companies: the speculation
* uncomplicated provider styles
* Alerting clients through Notifications
* asking for and Requiring Permissions
* getting access to Location-Based companies
* Mapping with MapView and MapActivity
* dealing with phone Calls
* Fonts
* extra improvement instruments
* The function of different Environments
* HTML5
* PhoneGap
* different replacement Environments
* facing units
* the place can we pass from the following?
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Java: Practical Guide for Programmers (The Practical Guides)
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Additional info for JDK 1.4 Tutorial
Sample text
4 After calling flip(), the limit is set to the old value of position, and the position is set to 0. 5 The reading process begins—as bytes are read, the position advances. 5 slice() and subbuffers The slice() method allows you to create a subbuffer of a given buffer. A subbuffer is just another buffer that happens to share its data with a portion of the data in the buffer it was created from. It is, nevertheless, a separate buffer with its own position, limit, and capacity. The subbuffer does not have to start at the first element of the original buffer.
1) illustrates the entire process of copying all the data from an input channel to an output channel. Watch out for a couple of new methods—flip() and clear(). These methods are used any time a buffer is both written to and read from—which is almost all of the time. flip() to prepare the buffer for being written to another channel. clear() to prepare it for being read into again. 4. Make sure not to confuse reading from a buffer with reading from a channel: reading from a channel means reading data from the channel, and putting it into the buffer.
Reside as close to the operating system as possible, to reduce the number of copying steps as much as possible. You might be tempted to allocate all buffers as direct buffers, but this would be a bad idea. Direct buffers should only be used for buffers that will actually benefit from the speed increase. Direct buffers generally cost more to allocate, and may require more system resources during their lifetimes. Again, this depends on the implementation. NOTE Direct buffers do not contain faster memory.