B4A Class ExternalStorage - Access SD cards and USB sticks - Erel    Mar 5, 2018   (53 reactions)   tags: File, Access SD and USB, externsl sd, storage
storage means a real sd card or a connected mass storage USB device.
This class can also be used to... RuntimePermissions.GetAllSafeDirsExternal to directly access a specific folder on the SD card.
You can use...
B4R Tutorial SD cards - Erel    Apr 19, 2016   (8 reactions)
The rSD library allows reading and writing to SD cards. The Ethernet shield as well as other shields include a SD slot.
The steps required to work with files:
1. Initialize a SD object. You need to... the data file. The data file is then manually copied to the sd card.
This is the important code:
B4A Question how to ext. SD Card write on Android 4.4. - monki    Jun 19, 2014
in Android 4.4 it is only possible to write to the external SD card in a directory whose name Andoid / data / "apk name".
But as it is created?
B4A Question File.DirRootExternal not the path of the sd-card? - Alexander Stolte    Jan 19, 2017
Hello, In the theory you get with DirRootExternal the path of an external storage media or sd-card. Is that right? Because with me comes a completely different path out and try to save something under the path it saves it always on the device not on the SD. I add this permission to the manifest editor: AddPermission("android.permission.WRITE_EXTERNAL_STORAGE") And writeable is true. Or is there another way to save the sd card? All tutorials I have read have been based...
B4R Question SOLVED - SD card adapter tyep, Max SD card size / format - Robert Valentino    Apr 15, 2020
Want to hook a SD card on to my ESP8266EX
What sd cards adaptors are you guys using (known to work)
What is the max sd card size I can use in the adapter (have an old 16gig) I have read use fat16...
B4R Tutorial Arduino - PC File Transfer - Erel    Jun 8, 2016   (9 reactions)
In this example the Arduino board acts as a server. Clients can list the available files and can download files stored on the SD card, which is part of the Ethernet shield. https://www.b4x.com... analyzes the response. The SD and the ethernet features cannot be used at the same time as both work... with the SetSD sub. Note the usage of the large buffer in the client program. It simplifies the client solution... such as the Arduino Mega. During the tests I've found a bug in SD.ListFiles which can cause some of the files to...
B4i Library SD: ScratchCard - Star-Dust    Dec 9, 2018   (4 reactions)   tags: myapp
Touch (Action...I created a new view / panel that simulates the effect of scratch cards.
Create a panel from code... PanelScratchCard1 As PanelScratchCard
Private Sub Application_Start (Nav As NavigationController....LoadLayout("Layout1")
B4R Question Is SD cards open in append mode supported? - tigrot    Nov 10, 2017
Hi everybody, to write and append data to a SD file, it's enough to position to the end of the file and write the record? After opening readwrite? Best regards Mauro Zanin...
B4A Question Files and Database Must Reside on SD Card. How to Refer To SD Card Root? - Mahares    Nov 7, 2012
My files and database must reside in the SD card in case the device is damaged, I can insert.... On the other it is : /mnt/extsd. How do I insure that everything is saved on the SD card regardless... the root of the SD card as I use File.DirRootExternal. I removed the SD card and popped it into a card reader but the files are not there they are on the phone memory. I read some threads where the SD card is referred to as File.DirDefaultExternal. So, I removed the SD card from the device and found out...
B4R Tutorial ESP8266 FTP Client - Erel    Dec 21, 2016   (8 reactions)
To complete the B4X FTP season (https://www.b4x.com/android/forum/threads/74320/#content) I've written a client in B4R. It allows to connect to a FTP server and download or upload files. There is no SD card involved in this example. It downloads a file and prints its content and uploads a string (array of bytes) as the file content. The file is stored in an array of bytes (FileBuffer). Its size is set to 1000. You can increase it if you want to download or upload larger files...
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