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    <h1>Tips for wide range devices</h1> <p>The question is: how to write code that will handle different RIM OS, carriers and device models? In code that will depends on available/deprecated API, in workflow about handling carriers features and characteristics of device. </p> <p>First of all, read <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800783/How_To_-_Develop_applications_for_different_BlackBerry_Device_Software_versions_and_BlackBerry_smartphone_models.html?nodeid=1734478&amp;vernum=0" rel="nofollow noreferrer">How To - Develop applications for different BlackBerry Device Software versions and BlackBerry smartphone models </a></p> <h2>Wide range RIM OS support</h2> <p><a href="https://stackoverflow.com/questions/1437044/which-blackberry-os-version-to-target-for">StackOverflow - Which BlackBerry OS version to target for?</a> - to be short, my choice is RIM OS 4.5 </p> <p>Tips for 4.7 - 4.6 - 4.5 - ? support: </p> <ul> <li>navigation, use accelerometer and touchscreen, but don't forget about trackball and menu </li> <li>borders, there are no BorderFactory in 4.5 and earlier </li> <li>background, there are no Background in 4.5 and earlier </li> <li>transparency, there is no Graphics.setGlobalAlpha(alpha) in 4.5 and earlier </li> <li>multimedia, different formats are supported on differen OS and phones </li> </ul> <p>See also<br> <a href="https://stackoverflow.com/questions/1135349/blackberry-how-to-add-border-to-basiceditfield">Blackberry - How to add border to BasicEditField?</a><br> <a href="https://stackoverflow.com/questions/1431189/setting-background-and-font-colors-for-richtextfield-textfield">Setting background and font colors for RichTextField, TextField</a><br> <a href="https://stackoverflow.com/questions/1445953/blackberry-user-interface-design-customizable-ui/1450719#1450719">Skinning Blackberry Application</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/1089414/What_Is_-_Supported_audio_formats.html?nodeid=1187763&amp;vernum=0" rel="nofollow noreferrer">What Is - Supported audio formats</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/1089414/Support_-_Playing_audio_in_an_application_pauses_the_Media_application_on_BlackBerry_smartphones_running_on_the_CDMA_network.html?nodeid=1376897&amp;vernum=0" rel="nofollow noreferrer">Support - Playing audio pauses Media app on BlackBerry CDMA smartphones</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/1089414/How_To_-_Record_audio_on_a_BlackBerry_smartphone.html?nodeid=1311883&amp;vernum=0" rel="nofollow noreferrer">How To - Record Audio on a BlackBerry smartphone</a> </p> <h2>Carrier support</h2> <p>I have no statistical information about BlackBerry carriers. But lets see what are those carrier features we can meet: </p> <ul> <li>if we use carrier network resources, carrier controlls all network configuration. That means on ex. we may have no UDP, max. transfer file size about 3 Mb, and we will have to config APN settings</li> <li>also, carrier and device combination defines what GPS type is accessible. And for Verizone, there is a special signing process to access GPS.</li> </ul> <p>See also<br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is_-_Restricted_ports.html?nodeid=1449563&amp;vernum=0" rel="nofollow noreferrer">What Is - Restricted ports</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is_-_Network_Diagnostic_Tool.html?nodeid=1450596&amp;vernum=0" rel="nofollow noreferrer">What Is - Network Diagnostic Tool</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/How_To_-_Determine_when_to_route_data.html?nodeid=1181674&amp;vernum=0" rel="nofollow noreferrer">How To - Determine when to route data </a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is_-_Different_ways_to_make_an_HTTP_or_socket_connection.html?nodeid=826935&amp;vernum=0" rel="nofollow noreferrer">What Is - Different ways to make an HTTP or socket connection</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/How_To_-_Specify_APN_information_for_a_direct_TCP_connection.html?nodeid=1265025&amp;vernum=0" rel="nofollow noreferrer">How To - Specify APN information for a direct TCP connection </a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800703/What_Is_-_Best_practices_for_designing_GPS_applications_for_BlackBerry_smartphones_operating_on_CDMA_networks.html?nodeid=1446048&amp;vernum=0" rel="nofollow noreferrer">What Is - Best practices for designing GPS applications for BlackBerry CDMA smartphones</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800703/What_Is_-_The_BlackBerry_smartphone_models_and_their_corresponding_GPS_capabilities.html?nodeid=1371352&amp;vernum=0" rel="nofollow noreferrer">What Is - The BlackBerry smartphone models and their corresponding GPS capabilities</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800703/What_Is_-_Verizon_GPSSettings_signing_requirement.html?nodeid=1365068&amp;vernum=0" rel="nofollow noreferrer">What Is - Verizon GPSSettings signing requirement</a> </p> <h2>Different devices</h2> <p>Things which may help support set of devices: </p> <ul> <li>use flexible, elastic UI elements, change size and layout according to screen size </li> <li>use several graphic resources sets of different size</li> <li>control font type and size</li> <li>before use camera, check if it's available</li> </ul> <p>See also<br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800719/What_Is_-_Compatibility_mode_on_touch_screen_BlackBerry_smartphones.html?nodeid=1487544&amp;vernum=0" rel="nofollow noreferrer">What Is - Compatibility mode on touch screen BlackBerry smartphones</a><br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800505/800608/What_Is_-_Image_formats_used_in_BlackBerry_applications.html?nodeid=800342&amp;vernum=0" rel="nofollow noreferrer">What Is - Image formats used in BlackBerry applications</a></p> <h2>Building several RIM OS</h2> <p>There are <a href="https://stackoverflow.com/questions/1383277/using-preprocessor-directives-in-blackberry-jde-plugin-for-eclipse">preprocessor directives</a>, but I prefer to use <a href="http://bb-ant-tools.sourceforge.net/docs" rel="nofollow noreferrer">BB Ant tools</a>, copy/delete all platform version diff (code, resources) and target appropriate rapc directory from build task.</p> <p>See also<br> <a href="http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/1407892/How_To_-_Use_the_preprocessor.html?nodeid=1487658&amp;vernum=0" rel="nofollow noreferrer">How To - Use the preprocessor</a> </p>
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    1. COAnother link: http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800901/What_Is_-_Supported_versions_of_Java_for_different_BlackBerry_JDE_versions.html?nodeid=1313614&vernum=0
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