Author: Mr Wyken Seagrave Pages: Publication Date Release Date ISBN: Product Group:Book Download. BY MR WYKEN SEAGRAVE PDF. Downloading the book B4A: Rapid Android App Development Using BASIC By Mr Wyken Seagrave in. [P.D.F] B4A: Rapid Android App Development using BASIC [Ebook, EPUB, site] By Mr Wyken Seagrave. B4A: Rapid Android App Development using.
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and reference book "Rapid Android App Development using BASIC" by Customers who have bought the ebook in PDF, EPUB and site. book "Rapid Android App Development using BASIC" by Wyken. Customers who have bought the ebook in PDF, EPUB and site formats. A new edition of “B4A: Rapid Android App Development using BASIC” by here and in 3 electronic versions from the Penny Press Store: PDF.
You cannot install two applications with the same package on one device. Note that you can always change the package name and the label under tools menu. This is the application name that the user will see. Your program will now be compiled and installed to the emulator: 11 The emulator is significantly slower than a real device. In many cases it is more convenient to work with a real device as the installation is much faster.
Note that you can always redeploy your program. There is no need to close the running program on the emulator.
Tracking the log with LogCat Android devices keep an internal buffer of log messages. These messages can be very handy for debugging.
B4A: Ultra-fast Android App Development using BASIC by Wyken Seagrave
To view the logs you should switch to the LogCat tab in the right pane and press connect: There are two "Hello world! Unchecking "Filter" will show all available messages not just messages relevant to your program.
The user needs to guess a random number. The user enters the number in the EditText view control and presses on the button to submit the guess.
A "toast" message will appear, indicating to the user whether the number is larger or smaller than the chosen number. The designer is made of two main components. The "control panel" which contains all the available properties and options, and is part of the IDE: and the "visual" component which runs on a device or emulator: 14 The visual component, as it names suggests, displays the layout.
It also allows you to move and resize the views controls. Changing the layout in the visual component will also change the values stored in the control panel. Note that all the data is stored in the control panel component. Therefore nothing bad will happen if the emulator crashes or is turned off. You can connect to it again and the layout will appear. The first step is to connect to the device.
Press Tools - Connect. This step takes several seconds. Closing the designer will not disconnect the connection. Change the views Text property and position them similar to this: 15 Change the Activity Drawable property to GradientDrawable to achieve the gradient effect.
Tip: When working with a small monitor you may find it convenient to check the "Top Most" option in the upper right corner. It will cause the control panel to stay on top and not be hidden by the emulator. Save your layout, name it Layout1. An important concept about layouts is that there is a complete separation between your code and the layouts. The layout is saved as a file, with ". Each project can have any number of such files and unless you explicitly load a layout file, it will not have any effect on your application.
Once you have saved a layout, it is automatically added to the "File manager". You can see it under the "Files" tab in the IDE right pane.
We want to catch the button's click event. Each view has an EventName value. It is a property in the Designer, and a parameter passed to the Initialize method when adding views programmatically. In the designer, the EventName property is set by default to the view's name.
LoadLayout "Layout 1" ' Load t he l ayout f i l e. Sel ect Al l End Sub - Every activity module comes with an Activity object that you can use to access the activity.
LoadLayout loads the layout file. Like Panel and TabHost. For TabHost each tab page can be created by loading a layout file. Using a toast message in this case is not optimal as it may be unnoticed when the soft keyboard is open.
You should see a small tooltip saying "press tab to insert event declaration". Press tab, choose the object type and choose the event. Supporting multiple screen resolutions and orientations Each layout file can include a number of layout variants.
Each layout variant holds a different set of values for the position and size of the views. If for example, you change the text of any view it will be changed in all variants automatically.
However if you change the position of a view it will only affect the current variant. Note that scaling is handled automatically if required.
Which means that if we run our program on a high resolution device, the layout will be automatically scaled. Still you may choose to create different variants for different scales. When you load a layout file the variant that best matches the current device will be loaded.
This is the default scale in portrait mode. Default scale in landscape mode. Ok, so open the designer again. Load Layout1 file if it is not opened. Choose "New Variant" and choose x second option. Note that the device layout details appear under the list of variants.
Change the layout to be similar to this: 18 You can change the current selected variant and see how it affects the visual layout. Save the layout and run the program. Change the emulator orientation and see how the layout changes accordingly.
Android destroys the old activity and creates a new activity each time the orientation changes. Therefore Activity. LoadLayout will be called again each time. Unfortunately the number will also be randomly chosen again each time. This can be easily fixed But not in this tutorial. The project is attached. This method creates a zip file with all the required files.
The list includes a description for most items. The tool tip might hide some important code that you now need. You can hide it by pressing escape. You can also turn it almost invisible by pressing the ctrl key.
Another press will return it to be fully opaque. These logs are very useful for debugging. You can log messages with the Log keyword. In order to start displaying the logs you press on the Connect button. The logs can be filtered and then you only see messages generated by Basic4android or your application.
Note that if you have more than one device connected you can switch to a different device by pressing on the Connect button. Designer generated members tool - This tool allows you to add the declaration code for the designer views and to add event subs. Note that you only need to declare views that you intend to access by code.
Nothing will happen if you select an existing item there will be no duplicated code. The status bar at the bottom of the screen displays the progress of the process and when the installation is completed. A short sound will notify you if the process failed.
In that case you may need to compile regularly F5 in order to see the error message it depends on the type of error. Working with multiple connected devices - In many cases you have more than one device connected. For any operation that starts a connection you will be shown the list of connected device and you will choose the target device.
If you compile in the background the last device will be used again. This is usually more convenient than compiling in the foreground and selecting the target device each time.
Designer - Duplicate - You can duplicate any view by selecting the view and then choosing Tools - Duplicate View. If the view has child views then all its child views will be duplicated as well. Export as zip - Export as zip option creates a zip file with all the required project files. This is useful when you want to share your project with others or create a backup. A lot of functionality is included. Easy read! Readers Comments About Earlier Editions "This was a book that I now use as a constant reference and have found it a mine of information.
Just what I was looking for.
PhilipBrown , Feb 8, Recent Posts You must log in or sign up to reply here. Show Ignored Content. Your name or email address: Do you already have an account? No, create an account now. Yes, my password is:A small white bag meets an old friend: A Complete Overview and Gu There are many books in the world that can improve our knowledge.
I also have a phone that mostly works with adb in command line mode but adb hangs and doesn't return to the command prompt after performing an install or uninstall although the actual operation on the device is successful.
No, create an account now. Upgrades after that might not work. This book has been really helpful in understanding how to create Android apps using this great fairly new platform 5. This is usually more convenient than compiling in the foreground and selecting the target device each time.
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