Android :: Read Data That Been Separately Copied To Sd Card Without Having Root Permissions?
May 4, 2010
I am developing an application that needs to access data on the sd card. When I run on my development device (an odroid with Android 2.1) I have root access and can construct the path using:
However, when I install this on a phone (2.1) where I do not have root access I get files == null. I assume this is because I do not have the right permissions to read the data from the sd card. I also get files == null when just trying to list files on /sdcard. So the same applies without my constructed path.
Also, this app is not intended to be distributed through the app store and is needs to use data copied separately to the sd card so this is a real use-case. It is too much data to put in res/raw (I have tried, it did not work).
I have also tried adding: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
To the manifest, even though I only want to read the sd card, but it did not help. I have not found a permission type for reading the storage.
Using your own SQLite database in Android applications: http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/comment-page-2/#comment-12368
However it's keep bringing IOException at
I'am trying to use a large DB file. It's as big as >8MB. I built it using sqlite3 in Mac OS X, inserted UTF-8 encoded strings (for I am using Korean), added android_meta table with ko_KR as locale, as instructed above.
However, When I debug, it keeps showing IOException at
I suspect it's caused by trying to read a big file. If not, I have no clue why. I tested the same code using much smaller text file, and it worked fine.
Can anyone help me out on this? I've searched many places, but no place gave me the clear answer, or good solution. Good meaning efficient or easy.
I will try use BufferedInput(Output)Stream, but if the simpler one cannot work, I don't think this will work either.
Can anyone explain the fundamental limits in file input/output in Android, and the right way around it, possibly?
We have ported android to our hardware. I am facing some issues related to sdcard. Here is the test scenario and issues:
First issue : 1. On hardware, insert the card and copy a file to sdcard using dd command. 2. Remove the card from hardware. 3. Do ls /sdcard. It shows the file present in sdcard. It seems unmount of sdcard device is not happening.
Second issue: 1. Copy a file to sdcard using dd command. 2. Remove the sdcard and check the content of the sdcard from PC. File is not visible. 3. Copy file to sdcard again and then check the content of sdcard from PC. File size is zero bytes. 4. Restart the hardware and copy the file again. File is visible when checked from PC.
Third issue: 1. The content of copied file are not matching with the original source file.
I have two published apps that are pretty targeted to the user collecting their personal medical data (like Blood Pressure, etc.) and then, eventually sending it somewhere, if they choose.
I decided to put Read/Write permission on my ContentProvider, so if another app comes along that wants to the access that content, the user will be warned. The permission that is required is declared in my apps.
When the user installs my apps, they are also given a warning that the app requires that permission (even though it's the one that declares it), and it shows up in the Marketplace also.
The question is: Is it possible that the permission acceptance part of installing my app could be putting customers off? I don't know what other's acceptance rate is, but mine is around 50% of customers who download it have active installs.
My android app has nothing to do with phone calls, but I'm seeing that when I install a debug build on my test device it requires "Phone Calls: read phone state and identity" permissions. (I make no mention of this in AndroidManifest.xml). I'd like to have the minimum possible permissions, and wondered if anyone knew how to get rid of this? I commented out the part where I was logging some stuff from Build.MODEL, Build.VERSION.*, etc. I also commented out the part where I was detecting the landscape/portrait orientation thinking that that might be the "phone state". But neither of those seemed to remove that permission required.
I found this bug report but it's marked working-as-intended with a note about permissions being correct from the market but not otherwise. Is this other people's experience? (I'd hate to have to publish to the market just to test that out.) Otherwise, does anyone know if there's an API I can avoid calling that will make it so my app doesn't need this permission?
Is it possible for an Android app to install a native Linux daemon with root privilege that runs when the system starts up? The purpose of this daemon would be to support and communicate with our Android front-end app.
My doubt is where(in which file) it is written in Contact Application that you have to set these permissions. because i want to make a sample application and i want if anyone want to get data from my application, have to get some permission.
Please let me know that where we plan which permission has to get by other application to get data from a application.
I cant copy big compressed (.zip, .rar) to my sd card. The item successfully copied but end with corrupted file (crc). I tried to fix with some software on net. But the is no can fix instead showing no problem. HY5001
While enabling bluetooth (market application) in my Xperia X10 mini pro, I get error message "Files can be transferred only to other android devices" since I don't have root permission. How do I get root permission? Is this legal?
Every few days(sometimes once a day) I get a 'new' android 4.3 update, which once it reboots into the teamwin bootloader, and finishes installing the update(which always seems to work for first 2 steps but says no contents in file, then 2 errors after) I lose root access and it asks if I want to reapply (which I do) and it loads as normal on a restart. I am with build number JWR66N now, but the info page on the TWRP window shows it updates JWR66N to (And I forgot the number here, but its different)
So I'd like to know, is it normal to have 'constant' android updates like this, and if not, what build number should I have?
I have had this issue since about a week after I got my nexus, its been rooted ever since, but in an attempt to fix this issue(Which is just annoying, I doubt its causing any real damage) I unrooted the nexus, updated it(Manually) and re-rooted it using the wugfresh rootkit.
I have got a INQ Cloud Touch mobile with android 2.2.2 froyo installed on it by default.The problem is that i can't get root permissions.. I tried almost everything i found looking on the web but nothing seems to work. Android apps like 'z4root', 'androot' or 'gingerbreak' crash or get stuck, and PC programs get stuck on 'waiting for device' even if the mobile is connected and debug mode is enabled. I really need root permissions because this mobile has plenty of useless apps that i can't remove without.INQ website provides only an update program that doesn't update android at all.I think my problem has 2 solutions:
I just got a dopo 7" tablet from a relative and for the life of me cannot get it to root. I have been at it since 3-4pm (its 11:10 now) and no matter what apk or .bat rootkit, or windows root exe i have tried from old guides and some new ("can root ANY android device 2014!!!") to YouTube videos.
i have unknown sources checked debugging checked tablet never sleeps/screen never shuts off have it plugged into laptop via the cable the tablet came with usb to micro root master apk failed suggested root-rk29 tab rootkit each step it tried it could not find any of the necessary files needed on my tablet (even after 3 restarts and 3 different methods) root will try to restore data like the programs steps shows but as soon as it says restore started it immediately says restore ended and it gives an X in the circle and wants me to retry (tried 4 times)
tried doomlordz v4 rootkit and same as other rootkit it says the files arnt found and does the alternative methods and SAYS its completed but root checker still says its not
tried key root master mentions something about a cloud program but never roots superoneclick becomes unresponsive for 20mins and does nothing so i have to end task (some says it freezes their phone/tablet) but my tablet acts like nothing is happening.I have tried Googling multiple times only to find results related to 9" version.
I have about reached my limit of patience on this thing..I have 0 knowledge on rooting other than reading up why I would want it or the common steps which did not work obviously...
I just updated my SGS to 2.3.6 (JW4) with CF-Root. I've been using Root Browser since 2.3.5 (with Superuser) with no problems but since updating to 2.3.6 (with SuperSU), Root Browser does not get root permissions. For example I can read the system partition but cannot write to it (like deleting a file). Also if I click on a file on the system partition and check it's properties Root Browser does not show the permissions, it just display N/A.
- configured SuperSU to the default allow action instead of prompting me
- installed Superuser, don't launch it, just install to check if it could be a problem with Root Browser way of cheking for root by using the presence of superuser.apk
- uninstalled and reinstalled Root Browser
None of the above has solved my problem. All the other apps that require root work fine.
Confirm that Root Browser does indeed work with SuperSU 0.87?
Specifically, when I go to /mnt/sdcard/download all the files are ---rwxr-x. When I long-click a file I can access a Permissions dialog, but any changes I make there are not actually reflected on the file system. Anyone know what might be going on?
Before rooting my device I had read there's the possibility of adjusting the permissions or even feeding false data to apps.
Today I found such an app to allow me to do so.
Both xposed apk and xprivacy ! I downloaded both which is needed. Anyway before configuring to operate there was a warning to have backup of whole system and know how to recover. Further warning said there was possibility of soft brick and bootloop. I immediately deleted them both. So did I do the right thing?
How can I read the CID (Card Identification register) of an SD card with Java or C-Code in an Android phone? I tried "cat /sys/class/mmc_host/mmc1/mmc1:*/cid" but at least on the Samsung I7500 Galaxy it does not return the CID of the SD card because it is always the same number with different SD cards.
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i have seen the schema of mmssms.db and Their Column of part Table.