Android :: ARM Directly Read / Write File On Sd Card I/O Without Cache


I need to directly read/write a file on sd card without cache. I can use "posix_fadvise" to achieve the purpose on Ubuntu I try NDK to make the function call, but it seems disabled on Android How can I do?

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How the directories are disposed? Where do I copy my musics and pictures in my virtual device to test my apps? update: I entered the internet on the Android's virtual device, tried to save an image, and it says that "An SD card is required". I thought I've read in the android.developers.com that the device has a SD card by default. Anyway, I'll look for how to create it.

General :: SD Card Music Not Showing Up On Music Player? forums.androidcentral.com

I recently bought an SD card for my Samsung Galaxy Centura, mainly so I could store music on it without taking up much of the memory. The odd thing is, when i went to play some music using the music player, only about a quarter of the songs showed up. When I used Android File Manage to check the SD card, they were all there and playable. All the songs are MP3 format. how I can get the songs to work on the music player?

General :: Command Not Found Error While Trying To Compile Kernel From Source With NDK forum.xda-developers.com

I am following this right here [URL] .... And i keep getting command not found even though i am sure its right. Code: ~/AlienKernel3.0-alien-4 $ export CROSS_COMPILE=/home/user/ndk/android-ndk-r9c/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi- Code: sudo make clean && sudo make mrproper Code: make: /home/dm47021/Android/toolchains/arm-unknown-linux-gnueabi-linaro_4.8.2-2013.08/bin/arm-unknown-linux-gnueabi-gcc: Command not found /bin/bash: /scripts/gcc-version.sh: No such file or directory [Code] ....

Lenovo X Series ThinkPad :: X240 - SD Reader Slot - Unable To Extract Card forums.lenovo.com

I just reveiced my Lenovo Thinkpad x240 20AL000AAU with SD card reader integrated.   I inserted an SD card standard size and the card is read properly, I can access all the files and I can write on it.   The problem is that I cannot extract the card from the SD card slot!   If I right-click on SD card in My Computer and choose eject, it says that it is safe to remove the card. If I select "Safely remove Hardware and eject media" it tells me that it is safe to remove it...but the card is stuck inside!   I read somewhere to press the card until I hear a click but I cannot hear any click.   Also the card is unreachable inside the slot. I cannot grab it to pull it. I can only press it a little bit with the nail, it goes one millimeter inside but I don't hear any click.

Read Tag And Then Write Information Into Tag Without Scanning Again androidforums.com

I am writing application to read information from NFC tag after that edit the information and write again to NFC tag without touch second tag (only read and write in the first touch). The data after write into the tag that is displayed into mobile. The processing is such as (Read tag=>Get Information=>Edit information=>Write Tag again=>Read information to display)I found some solution in the internet such as android read back the tag infomation after write, without second touch of tag...But when I implement it.It did not work for writing. [HIGH]import android.nfc.NfcAdapter; import android.nfc.Tag; import android.nfc.tech.Ndef; import android.nfc.tech.NdefFormatable; import android.os.Bundle; [code]....

General :: How To Store Data On SD Card forums.androidcentral.com

I'm using a Blu Tank 4.5 running Android 4.1.1 Everything (apps, email, txts, etc) all file to the internal phone memory even though, on the settings page, (Settings/Storage/Phone Storage) I have highlighted the SD Card button. The SD card is recognised by the phone and reports 29.57 GB available. I want data to file to the SD card.

Android :: Trying To Write A Desktop Client To Synchronize Data With App groups.google.com

I am trying to write a desktop client to synchronize data with my android app. When i mount the SD card how can i find is this is android SD card and how to check if given application is installed of the phone ( by DE desktop client).

HTC Eris :: Storage Space Error androidforums.com

I just put xtrROM on my Eris and now I'm getting the "low space" notification. It says that I have 7mb left on my phone. I have 3.5 gb on my SD card. I had 4.0.4 on previously with the cache and apps on the SD card I had 4.5gb left before I did the wipe and install.After I reinstalled my apps using Titanium Backup, I started getting the notification. I can't figure out why I'm getting it though. It almost appears like the apps may have gotten installed on the internal memory on the reinstall.I first saved my SD card contents to my PC, did an SD card wipe, repartition, and made it ext3, then copied all data back. I tried running the apps2sd script via GScript and I get the following errors: stderr : sys : not found stderr: cannot create /system/etc/usersettings/conf/apps2sd_value: read-only filesystem Market apps (.apk files) will be moved to the sd card, reboot phone for changes to take effect.

HTC Hero : Phone Wont Read Old SD Card / Way To Fix? androidforums.com

I am new to android. Got HTC Hero recently. Had HTC TyTN windows mobile. The Sd card from TyTn is not read by Hero. Files like MS word, Adobe, notepad etc are being detected, but when tried to open, it says application not found. I have downloaded sd card reader from market, but still the same problem. I am still using my old phone because of this.

Motorola Droid :: SD Card Not Present & Won't Connect Via USB To Mac forums.motorola.com

suddenly my SD card decided that it was going to disappear, and even though it's there, my phone is not detecting it. I pulled the battery, removed the SD card and plugged it into my computer via adapter (not phone) and was able to access it. I put the SD card back in my phone, power up then go to Settings>SD Card & phone storage and under 'Mount SD card' it says "Insert an SD card for mounting". Okay ... so a few days later I exchanged SD cards with a "droid" friend and she was able to detect my card in her phone, but again my phone is not detecting her card. Bummer... Also, when I plug my phone into my computer via USB to Mac I am unable to establish a connection. I am using Android File Transfer. I have tried to format SD card (FAT32) with Disk Utility and still nothing... So I'm almost convinced that my phone is damaged. It was working last week.

General :: SD Card File Removal? forums.androidcentral.com

I had to get a new android and sprint gave me a Galaxy S2 in place of my Samsung Conquer,Well when sprint set up my new phone they just installed my SD card from the Conquer,Now when I go to my files, it shows SD card and EXT SD card, I want to remove the fines and the EXT SD card,all my files, folders, photos etc. are in the SD card folder, and work correctly, I have already tried to delete it through the phone, and it won't let me delete the folder, and If I put it in my laptop only the SD card shows up with only part of my folders and files,How can I remove the EXT SD card Folder ?

General :: Running Out Of Storage Space And Can't Transfer To Another Partition Or SD Card forums.androidcentral.com

I'm not very familiar with Android OS, I recently purchased a NOBIS 9, 1.5GHz Cortex A9 Dual-Core processor, 1GB DDR2 of system memory, and 8GB of internal storage running on Android 4.1. So far I have only downloaded and installed exactly 7 apps from Google Play and all my pictures and videos are in my SD card and I suddenly have no storage room. When I go to settings/storage, I see that there are 2 partitions to the tablet's storage both named INTERNAL STORAGE. Apparently all the apps are being installed in one of the partitions, the one with only 661 MB of space. I was able to go into the APPS setting and move 4 off the apps to the SD card, but the rest of the apps do show the MOVE TO SD CARD option but are not allowing me to press it. Is there any way to somehow move the apps to the other partition or the SD card? Or is there a setting that I can change to allow all new apps to be installed in the SD card?

General :: Move Gallery Cache To SD Card? forum.xda-developers.com

My gallery cache is close to 2gigs. Syncing from Picasa... Any way to move it my SD Card? If I clear the cache, it just re-downloads and creates new ones. Currently internal storage cache: SGH-I317MPhoneAndroiddatacom.sec.android.gallery3d

HTC Desire :: Putting Apps To SD Card androidforums.com

So I updated by phone to android 2.2, and am having problems putting apps to the SD card. I have used ROM Manager to set a partition, and used App 2 SD to copy the Apps over, but it always fails. So I put a diffrent ROM on, and it does the same thing. So I decided it was time to get a bigger SD card anyway, so while I wait for it to arrive, I thought I would ask, is there anything I should do to either my phone, or the SD card before I put it in my phone or anything I should do to prepare it so I can get apps on my SD Card. In my root settings (I think its root then you turn phone on and press the down button), in the partition section there what should the settings be? Also as I'm getting a 16gig card, having read bits on here by helpful posters who say I need to partition it to be 256 with a 0 swap file, as I will have more space, can I/should i increase this, and should I put a value for the swap file (what does this do?).

Android :: Phone Read Blackberry Mem Card? androidforums.com

My daughter has a Blackberry Storm, and has ordered an Incredible, which is due to arrive Monday Sept. 13th. Is the card formatted in a format that Android can read? Or will I need to mount the card in my computer and copy all of the photos and stuff she wants to save, let Android reformat the card, mount it in the computer and transfer the stuff back onto the card? I would appreciate the advice of someone with knowledge of BB use of the Micro SD card.

Android :: Can App Access Files On Removable Media? groups.google.com

From what I've been able to find, Android apps are sandboxed, and can only list, read, and write files within the application's data directory (e.g. /data/data/<pkgname>). but, what about an application that allows users to view photos on an SD card (or play music, etc)? Surely this must be possible. Does one have to write a Service Provider for this?

Nokia Music :: 5800 Music Player Library Won't Read Music Files discussions.nokia.com

I have an Xpress 5800 and it was working fine until one day I put my micro SD card in my work PC, which automatically started syncing the music through Windows Media Player. After that, the music player library in the 5800 just will not recognise the music files on the micro sd card. I can still play the same music files through the file manager on the phone (one by one) but the music player library just won't be able to locate any music files on my card when I choose "Refresh Music Library" from the Music Player menu. More so, when I choose "View Card Details", it counts the music files as "other files" rather than "Sound files". But if I put in another sd card in the phone (from my previous E66) then it works with music player on the 5800 just fine. I suspect it's the WMP which has written something on my sd card which has stopped the 5800 from reading it properly.

General :: SD Card Blank Or Unsupported File System forums.androidcentral.com

Seen this error. My sd card is not readable on any android phone or computer ive tried it on. What I think broke it was the NEW SD CARD storage optimizer by Kalyani, I opened it up after downloading off the android market and used a feature called file explorer. It took forever to read all the files on my card and eventually I closed it out before its completion and immediately noticed my sd card is now inaccesable. Is that error fixable or should I throw out the card?

Samsung :: Galaxy S - Turn Off DRM Services / Speeds Up Access To Applications www.howardforums.com

I was experiencing slowdowns on applicationss accessing the SD card for storage and caching. Among them are browsers like Dolphin, applications like Twidroyd, and news applications like Huffington Post. It helped with some of the applications by setting their storage options to internal memory, but the best solution so far, without rooting your phone and adding some MODACO mod, is to go to Settings, go to Managing Applications, go to Running Services, look for something that mentions DRM, then kill it. Killing this does not harm the system, as I tested this already, and it speeds up access to applications that cache on the internal SD card. Of course, another way is to disable all SD access, and everything flies. But I find killing DRM services works well. DRM services is not part of the standard Android set, since I don't find this on the HTC phones, so killing it won't harm anything. Killing off Samsung's own slow ware such as Daily Briefings and the social Feeds widget may also help speed up the UI further, but on the other hand, these widgets can also be useful for some people.

General :: New Context Menu Doesn't Appear When Accessing SD Card From Computer forums.androidcentral.com

Basically, I'm unable to make a briefcase folder on my phone's SD card. I can make new folders, but I don't get the range of options that you would normally get when hovering your cursor over the "New" option (when opening the "New" context menu) when accessing my SD card via a usb cable plugged into the phone; I'm actually able to get the context menu when accessing the SD card by sticking it straight into the computer, but when it remains in my phone (and the phone's hooked up to the computer), I don't get the context menu. Here's what I want: Obviously, I can just use the SD card by plugging it directly into the computer, but it's inconvenient to take off the case, remove the back, etc. I'd rather just plug a USB cable directly into the phone. Why is my phone preventing me from getting that context menu when doing so though? Samsung-SGH-I437 Android version 4.1.2

Compiling LibUSB For Android androidforums.com

I'm writing an application that requires a custom USB driver, and i need LibUSB to be able to do it. I downloaded the following: android.git.kernel.org Git - platform/external/libusb.git/summary My problem is that when i try to cross compile using ./configure this lib, i get the error: unsupported operating system. I've been trying to configure like this: Code: ./configure --host=arm-eabi CC=arm-linux-androideabi-gcc CPPFLAGS="-I$NDK_ROOT/platforms/android-3/arch-arm/usr/include/" CFLAGS="-nostdlib" LDFLAGS="-Wl,-rpath-link=$NDK_ROOT/platforms/android-3/arch-arm/usr/lib/ -L$NDK_ROOT/platforms/android-3/arch-arm/usr/lib/" LIBS="-lc" The main aim is to be able to use the library with the Android NDK.

HTC Incredible :: App Alert SD Card Speed Tester androidforums.com

With all the talk in this forum of SD cards & class differences, I thought this was worth passing along (Available free in the Market)I came across this app & tested my SD card. Sure enough it detected my Class 6 card, etc.SD Card Speed Tester - Android app on AppBrain I'm using a Centron 16GB Micro SD HC card 27% full

Android : How To Force MediaStore To Rescan SD Card groups.google.com

If I pragmatically store new media files on the SD card, the MediaStore does not know about them until I remove and reinsert the SD card. Is there a way to tell the MediaStore to rescan the SD card without first unmounting the SD card?

General :: No SD Card Notification On GS3 forum.xda-developers.com

My SD card was running normally on my gs3...yet this morning I had this notification "no sd card" something like that ...I couldn't enter neither to my files nor to my songs and photos....its like no sd card there !!!! How do I fix it without losing my data also when I plugging it in my laptop I cant see the sd card ever !!!!!

Android :: Call Java File On Click In Another Java Class? stackoverflow.com

i have two files App.java Gallery.java App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java App.java package gallery.display; import android.app.Activity; import android.os.Bundle; import android.view.View.OnClickListener; import android.view.View;...........

General :: Apps That Can Save Data To File forum.xda-developers.com

are there any android apps that can save data to files then copy to folder or sd card? for example, I want to take some notes and save to text files in notepad and save to sd card. I found almost none of android apps can save. can any list some apps can save data ?

General :: Note II / SD Card - How To Change File Destination forums.androidcentral.com

How to prevent files from saving onto my sd card, without unmounting it. Note II on steroids

Sony Ericsson Xperia X10 :: Moving Data From Phone Memory To SD Card? talk.sonyericsson.com

My internal phone memory is getting eaten up fast, how can I move the applications and make installations go directly to the SD card?

Android :: Possible To Attach File To Email Without Writing To SD? stackoverflow.com

My application stores data locally in the native SQLite db, and I want to allow users to export this data by emailing themself a .csv file. In order to do this I'm generating the .csv from the database and writing it to the SD card, then attaching it to an email:String Builder csv = generateFile();writeFile(csv.toString(),"file.csv");Intent email = new Intent(android.content.Intent.ACTION_SEND);email.setType ("application /octet -stream"); email.putExtra(android.content.Intent. EXTRA_ STREAM, Uri.parse ("file://sdcard/file.csv")); Which all works great. What I'm wondering, though, is if it is possible to skip the step of writing to SD first, and directly attach the data.

Motorola Droid Razr :: Get A Picture From A Text Message To Save Directly To Sd Card? forums.motorola.com

any one know how to get a picture from a text message to save directly to sd card.

How To Import Photos From SD Card forums.macrumors.com

Is it possible to import photos directly from the SD card to a storage app, like Box.net or Dropbox?

General :: Storage - Mount "locked" SD Card As Read-write In GNU superuser.com

My Canon PowerShot A470 + CHDK can write to SD-cards that are "locked" (the lock switch is used to make the card bootable), but GNU/Linux `/dev/mmcblk1': Read-only file system (I'm using "Texas Instrument 5-in-1 Multimedia Card Reader") So I have to switch that switch on and off again and again. ("unlocked" to write to the card in Linux, "locked" to boot the camera from it). How to force locked card to be writable in GNU/Linux?

Motorola Droid X2 :: Error Installing / Updating Apps On USB Storage Or SD Card forums.motorola.com

Today my droid x 2 wont install or update my apps I get an error message that reads "couldn't install on USB storage or SD card". I have turned off my phone did a battery pull, took out sd card put it back in and cleared market data and cache. And still have the problem.

General :: SD Card Not Detected In Recovery (TWRP) forum.xda-developers.com

My tablet is: Asus Transformer TF300T (rooted) What I did: - I accidentally wiped all data in tablet - ROM, etc. Only left is Team Win Recovery Project (TWRP) v2.2.0 recovery - I put Android.zip (installation files) into MicroSD Card / uSD Card - I boot into recovery (TWRP) - TWRP does not read/detect the SD Card - There is no files in /sdcard except one; /sdcard/TWRP/.twrps I also - installed adb on PC - did 'adb devices' - no device detected when connect between tablet and PC How?

Android :: Restart Service For Application SD Card / Remounted stackoverflow.com

Due to overwhelming user complaints I have decided try allowing users of my Android application to move it to the SD card as per the official documentation. However, a core feature of my application requires a background service to be continuously running. When someone who has moved my app to their SD card mounts their SD card for whatever reason, my background service will be killed. That's all okay by me, as long as I can restart the service at the first available opportunity. Unfortunately, despite the install-location guide claiming I can use the Broadcast Intent ACTION_EXTERNAL_APPLICATIONS_AVAILABLE to detect when the SD card is remounted locally, the documentation for that flag itself, this newsgroup discussion, and my own testing show that this broadcast is not delivered to the applications which become available. Only applications which have not been moved to the SD card get the Broadcast Intent. Is there any way to restart my background service without waiting for the user to open my app after the SD card is remounted?

General :: GS2 - How To Move App To USB Mass Storage (internal SD) forum.xda-developers.com

I use Samsung Galaxy S2 with Ice Scream Sandwich 4.0.3. WITHOUT EXTERNAL SD CARD ,rooted with SuperSu,oh and I rooted my phone specifically to be able to move apps to internal mass storage. Firstly,before I tried rooting my phone,I tried moving my apps to internal mass storage via the basic application manager in settings,but it only showed the "move to SD" option. Then I rooted my phone and downloaded x-plore.With x-plore ( file manager app with root browsing ) I found out that there were two parts of any app on the internal memory.First part ( located in /root/data/app ) contains .apk of an app which is oftenly same size as the installation of an app.Second part ( located in /root/data/user/data/data ) and it contains ".com.android." files of an app,which I believe are downloaded folders by that app.So for an example ,if I have Angry Birds installed, angrybirds.apk will be available in /root/data/app and ".com.android.rovio.angrybirds" will be available in /root/data/user/data/data.Since I couldn't find ANY app that is specifically made to move app to INTERNAL mass storage,I tried moving these two parts of an app (.apk and ".com.android..") to internal mass storage ( named as "sd" on x-plore ).But,as expected the app I moved tho the mass storage was "installed on sd card" as android would specify when I'd try to run it.Note:I moved it to a random directory on internal mass storage.When I moved the files back to their original paths,since they wouldn't work on mass storage,they worked properly again. So any way I count kind of mount those two parts I mentioned of an app as one,so Android would recognize it as a whole app when I move those files on internal mass storage.Or is there some other way to move them to mass storage?Or to make apps automatically install on internal mass storage? I really don't want to buy a SD card since I've read multiple articles that apps don't run best from SD cards.Once again,I repeat , I wan't to move them to INTERNAL mass storage which is around 11.50 GB of space,because my internal(system) memory is like 1/1,97 GB used.

General :: Cubot C9W - Install Or Move Apps To SD Card To Make Phone Memory Free? forum.xda-developers.com

I bought Cubot c9w android phone, i install 2 gb SD card on it, i can not install some apps on it for example facebook. after i tried to move apps from phone memory into SD card but impossible, there was not activated move to SD card button. what have to do how to install or move after that apps to SD card to make phone memory free?

General :: Wiped And Formatted SD Card - Files For Android? forum.xda-developers.com

Ok so I wiped and formatted my SD Card to FAT32. I am in the reboot/recovery screen of my android with ClockworkMod and I noticed when I turned on USB Mass Storage, the SD Card is readable but there is nothing on it now. Is there any important files I am going to need to put on the SD Card for my android to function correctly on start up/running? Or will my android automatically put the correct files on the SD Card on boot? Haven't tried booting it .