sd-card

I'm using a microSD card in an embedded design. The card is connected to a microcontroller using the SPI interface. It worked fine for all cards I've used before, but now my new card will not initialize. The card is a Transcend 2 GB microSD card (TS2GUSD). After sending the initial clock train to switch to SPI mode, I do the following: CMD0 (Argument 0, CRC 0x95) -> Response 0x01 -> OK CMD8 (Argument 0x000001AA, CRC 0x87) -> Response 0x01 0x000001AA -> Means it's SDC V2+ card, the voltage range 2.7 V - 3.6 V is supported -> OK Then I should send the ACMD41 command, but when sending the CMD55

Welcome all I have tried every question related to this in Stackoverflow and google and none of them works. I have tried something like this next link, but it returns the same as internal storage: How to get an External storage sd card size (With Mounted SD card)? For example, if I have about 12GB internal storage and 4GB SD card storage, no matter what method I use, I always get the exact same number for the SD space as I do for internal space. It seems that the old methods posted here in Stackoverflow only works until Android KitKat but do not work in next android versions. Is possible to

As I posted a question a few days ago, I realized thet the stock eMail app couldn't send multiple files in attachment: https://stackoverflow.com/questions/5773006/sending-email-with-multiple-attachement-fail-with-default-email-android-app-but Unfortunately, I got no answer on it, so need to find a workaround. The user has to select in a list some pdf and send them by email with stock app. As the multiple attachment fail, I will create a zip file with all the requested files and sent this unique file. So, hoz can I make an archive with some files on SDCard? What I currently found is this: http:

I am making an application, which pulls files(Saved by android app) from the device sdcard by adb. The problem is that different devices, have various sdcard directories i.e: sdcard sdcard/external_sd Firstly I invented following solution: run adb shell ls Check if dir "sdcard" exists If yes run sdcard/ ls and check if external_sd exists return value. But the problem is that I have two samsung devices GT-I9100 and GT-I9000 and both have a directory sdcard/external_sd . When I am checking System.getenv("EXTERNAL_STORAGE") one returns sdcard and another sdcard/external_sd . I need to pull file

I am using the following code to make the android device a ftp server (Android Internal storage). I am getting the exception of os.android.NetworkOnMainThread . I have tried to put the onStart code in the AsyncTask but app never executes and crashes on launch. Any help regarding the ftp server on Android will be great as i have no idea how to get it working. Here is the MainActivity Code package com.googlecode.simpleftp; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import

I'm working on books library in my android app... so I want to add a functionality that allows the user to view the books that he/she has downloaded by my app.. any idea or hint to work this out? The final solution depends a bit on the details you want to store for the books. If you only want to store the book title and author and you don't want to deal with a database yet then SharedPreferences might be an option. But they are more like Java Properties files and with this said not a good solution for persisting more complex data structures. If you want to store more metadata of the books (e.g

How can I search files on my sd-card given an entered string? I'd like to search for "test" and want to get a list with all files that contain in the name the string "test": testfile.txt filetest.jpg thisisatestfile.xml etc. You can use ListFiles() of Apache Commons IO , passing a RegexFileFilter FileFilter. Example using Commons IO jar library in your Android project : Collection<File> files = FileUtils.listFiles( Environment.getExternalStorageDirectory(), new RegexFileFilter(".*test.*"), TrueFileFilter.TRUE); for(File f : files){ //---do something--- } Also, run this code in a separate