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Trackball Mouse: The mouse is mostly used in laptops, the shape looks like a reverse mechanical mouse, its internal principle and mechanical mouse has a lot of similarities.
Its greatest advantage is that it does not have to run around like a mechanical mouse, saving space and reducing the fatigue of the user's wrist.
Relative to the general mouse, track ball due to its design characteristics, positioning accuracy, not easy to shake and other
Use BlackBerry API
Use Java on Blackberry devices
Application Control
The design of the BlackBerry API BlackBerry Java Development Environment (jde) provides a complete set of APIs and tools to develop Java applications running on Blackberry devices.
The
I have been idle for a while recently, so I learned how to develop BlackBerry. Of course, the first step of development is to build a development environment. Google has a few tutorials, but they are very old, probably because there are few BlackBerry developers in China. The advantage of Blackberry is its well-known security, so there are a group of loyal fans.
Don't talk nonsense, look at the parameters.See the following links for details.Key features and specifications of the BlackBerry PlayBook include:* 7 "LCD, 1024x768 x, WSVGA, capacitive touch screen with full multi-touch and gesture support* BlackBerry Tablet OS with support for symmetric multiprocessing* 1 GHz Dual-core processor* 1 GB RAM* Dual HD Cameras (3 MP front facing, 5 MP rear facing), supports 1
1. BlackBerry Object handler to be sufficient
Programs cannot consume too many object handles
2. Or the BlackBerry object Handler, in Persistant store persistent object handles is also limited, to save the use
Reference: Performance of the persistent store
(BlackBerry manuals Help > documentation for developers > Java Development Guides and API Reference > D AT
Blackberry Interface Program 3 dialog box and information box
Dialog Box (Dialog) and information box (Status)
Similarities: the two are subclasses of the interface (Screen). In use, you only need to call its static method (and call it using the class name)
Difference: the Dialog box contains a form with buttons and prompt messages. When you click a button, a value is returned. The value is compared with the constant defined in the Dialog; status is
Target: BlackBerry mobile phone via Bluetooth serial read Arduino Bluetooth transmission of temperature and humidity information
Hardware: Arduino motherboard + DHT11 temperature and humidity sensor + Bluetooth module, development tools C language
Mobile: BlackBerry 9360 Mobile, OS 7.1, development tools Java
Mobile: BlackBerry Alpha Mobile, OS 10.0.xxx, developm
According to the BlackBerry KB23699, BlackBerry os 6/7 's mobile phone default has only one browser icon, this browser by default is the BlackBerry channel, through the enterprise's BES server to access the Internet.
In the following several requirements, some customer requirements can not go BES access to the Internet
1 Enterprise BES Server can not access the I
www.rim.com/careers/Search Developer Relation
BlackBerry Developer Evangelist (based in China)
Description on Motion (RIM), a global leader in wireless innovation, revolutionized the mobile industry W ith the introduction of the Blackberry®solution in 1999. Today, BlackBerry products and services is used by millions of customers around the world to stay
RIM China will host the first domestic BlackBerry Application Development Contest (BlackBerry Developer Challenge 2011), which is based on BlackBerry BlackBerry mobile business platform, will attract China's best mobile app developers to participate, Experience a variety of BlackBe
network connection and transmission mode
The BlackBerry Solution acts as a bridge between the wired and mobile networks, the public network (the Internet) and the Internal network (intranet), leading to a wide variety of internet connections and data transmission patterns involved in BlackBerry.
From an application perspective, the following factors need to be considered in selecting the data transfer mode
Scroll screen: Press and hold the Alt key before moving Trackball Page flip • Multiple choice: In the message and call history lists, you can press shift and move the trackball to select multiple items, similar to Shift + direction key in windows. • Check: In the check box or single button, press the Space key to select or uncheck the trackball/scroll wheel cli
BlackBerry App list
Is a list.
Next we will create a list of instances.
Function: a list containing two rows. Click (or press) a row in the list. A dialog box is displayed, showing the clicked result.
Steps:
1. Create a UiApplication object and initialize the application. For details about UiApplication and Screen, refer to blackberry ui app (1) | blackberry a
Purpose: Product Manager draws the BlackBerry UI user interface on a Windows notebookNote: Not WYSIWYG UI code generation toolPrice: Free ...
BlackBerry UI prototyping-v1.0
BlackBerry UI prototyping Visio Stencils is a free product that's oriented on project managers and gurus that participate In planning of the project as the first stage of development. We suppo
Topic: Develop blackberry applications in java
The ui program of blackberry starts from the main function and needs to do three things in this main function.
1. Create a UiApplication object instance
2. Create a Screen object instance and add it to the Screen queue.
3. Place the UiApplication object instance created in step 1 to the event scheduling queue
Code:
| -- StatUiApplication. java
Code highlighti
BlackBerry China includes address of Beijing, Shanghai, Guangzhou, Shenzhen, Tianjin
6th Floor World Financial Centre East TowerNo. 1 Mid Road 3rd East Ring RoadChaoyang DistrictBeijing 10020 China
Http://ca.blackberry.com/company/about-us/maps.html
QNX China Office-Automotive BusinessAddress: Shanghai Pudong New Area, 88th Darwin Road, Peninsula Science and Technology Park 5th Building 3 FloorOffice Phone: +86-1350 198 4213Fax: +86-21-6182 677
methods such as the Drawtext,drawline,drawrect of a Graphics object to draw field
field can choose whether to handle and how to handle keyboard/trackball events, such as the user pressed "BlackBerry exit key", you can choose to pop Up the dialog box dialog, let the user confirm the need to exit
Implement Keychar (), Trackwheelclick (), invokeaction () and other methods.
Field ne
Reprint: http://www.51blackberry.com/news/zonghe/2012-08-17/7860.html
Rim Jinsongwei: BlackBerry leads the enterprise mobile keynote speech
Time: 2012-08-17 13:11:17 Source: Author:
BlackBerry was invited to participate in the 2012 China it value Summit, in which Jinsongwei, the China manager of LN Motion, made a speech on the theme "
IntroductionBlackBerry Advanced Usage Tips
Steps/MethodsPower Saving Tips
1. Do not use Bluetooth, WiFi function, do not open;
2. Note that after you have finished using a program, press the "Exit key" to exit. Press "End/Power key" can also exit to the desktop, but the program is still running in the background;
3. Adjust the brightness of the screen, of course, the low brightness of the power-saving, there is a "backlight timeout" set shorter.
4. Use the sleeping sleeve in the accessory. Do
In the digital age, the impact of social networking applications on consumers and business markets is one of the most attractive wonders. Marketing experts have changed the way they deal with potential customers, and groups with the same interests can be quickly set up, which are inseparable from social networks. The U.S. presidential campaign in the fall of 2008 showed that social networks have become part of a successful political campaign. The combination of social networks and popular, power
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