I am working to debug a usb crash in android infotainment system . I wanted to know ,what does the keyword "/8836-DAE0/" 'denotes in DirectoryPath=/storage/8836-DAE0/System Volume Information ' in android logcat logs ?
This 4 byte number looks like a FAT32 Volume Serial Number to me. It is part of the file system and stored in the boot sector at offset 67.
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I would like to use Googles UIautomatorViewer to analyse a third Party App running in a Android Virtual Device.
So far, I found a lot of toturials for the UIautomatorViewer using a real device and the ADB.
But is there a way to use a emulated device?
Thank you a lot in advance!
Yes. You can analyse emulator easily with uiautomatorviewer.
let me explain steps.
1) create emulated device from android studio and give it name ex. demo
2) Open cmd from emulator folder by typing "cmd" in search bar.
You will find folder here = "C:\Users\admin\AppData\Local\Android\Sdk\emulator"
3) Hit command " emulator #demo " it will open your emulated device called demo.
4) Now open uiautomatorviewer
Start analyse whatever you want on your device.
I've been using this phone a while, and I have been through tough times with it. Two bootloops, Google Play Services crashing infinitely, weird errors, everything. I'd say I've "bonded" with this Samsung and would like to take it up a notch.
I've been looking everywhere for ROMS for this phone and I haven't been able to find any, not figure out how. Maybe I'm just stupid but man it's aggregating.
I have a PC, Samsung driver's, Odin, and of course, my Samsung. I have everything I believe is necessary to flash a custom ROM.
I would appreciate ANY help to get a nice ROM for my phone.
At the minimum, I'd like it to have a theme changer.
Samsung Galaxy Grand Prime One
SM-G53OT1
You can install CM 13 on your SM G5series
CM 13 is a custom ROM used in android devices.
your warranty will be void if you install a custom rom.
careful that installing a custom ROM would sometimes injure your device
permanently.
Follow these steps to root your device to enjoy vast features
Download a recovery.img,USB driver and ADB tools for your corresponding device(extract and install them and keep the extracted file in one folder)
Download and Copy the zipped cm13 and gapps6(arm)to your device's internal or SD storage
Connect your device to a PC in USB debugging mode(just tap 7 times on the developer options in settings to enable USB debugging)
open program files,open minimal adb tools.Type CMD in location bar to open the command prompt in that folder)
type "adb devices" in the CMD without quotes.
"fastboot recovery.img"
Your device will be reboot and
Team win recovery is opened
wipe the system ,cache,dalvik cache
select INSTALL from the option
choose the zipped file cm13 and swipe it to flash the custom ROM.
choose the zipped file gaapps and flash it by swiping.
Your device will be updated to marshmallow after rebooting
I need to understand how the code on a USB gets the control after plug-in to the QNX device. What I already done:
Save slogger output (using sloginfo) during plugging the USB
Through it I understand that devb-umass driver and then mme-update get the control. I got and disasm the mme-update. Find the string from sloginfo and code that prints it
I ran gdb, check memory on needed addresses (it's ok, just like in disasm) and set breakpoint on code and watchpoint on a string. Plan was to trace the code further till USB code
Eject and plug the USB again. No reaction
Could you please give some ideas why? May be you can thing of a better way to understand how code on the USB gets the control? Changing some byte to 0xCC on a USB doesn't seem the solution
This only happends on the AVD devices within the AVD manager. I never get this error when capturing uiautomatorviewer screenshots from Genymotion.
When attempting to capture within the Android Device Monitor in AS...it gives me a little more detail:
Reason:
Error obtaining UI hierarchy
Try it with HAXM acceleration turned off, if you can. I had to run the test using a profile that then ran the test on a physical device to get the screen shots. Essentially, if the AVD has Use GPU or Snapshot selected - even if running on a USB attached device, screenshots fail. This is a bug in uiautomator according to the developers involved with maturing the Appium platform.
In addition to answer given by Houston Haynes, the problem can happen if you have set the flags for your activity like this:
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
You can just comment the code and take the screenshots via anything(Android Studio, uiatutomatorviewer etc). Hope it helps!!
I'm working on a device that writes some information directly to a flash drive, without using any file system (it just writes blocks of data directly to the disk sectors). After the flash drive is filled, I need to plug it into any computer with windows and read data using my application.
Everything works great except for when I plug the flash drive in windows warns me that flash drive is invalid an offers me to format it. I want to get rid of this message for my flash drives on any computer that have installed my windows application.
My flash drive have signature bytes at the start so I can always make out whether it's my flash drive or just a regular flash drive.
My idea is that I should be able to write some sort of service or driver which will check all flash drives and will disallow OS to mount my drives. However I don't know whether its really possible and I can't find any documents mentioning this sort of functionality.
I'd appreciate any docs / links / functions names that can help me suppress unformatted disk warning.
Make a tiny real partition at the start and format it to keep windows happy.
Then just use the rest of the drive as you please
This seems to work:
Remove the drive letter assigned to the device:
Right-click the 'Computer' (or 'My Computer') icon on your desktop or in the Start Menu and select Manage. The 'Computer Management' window should appear.
From the list on the left, select 'Disk Management' (within the Storage sub-tree).
Right-click the encrypted partition/device and select Change Drive Letter and Paths.
Click Remove.
If Windows prompts you to confirm the action, click OK.