Android :: Scanning With The Camera
Nov 12, 2010
I have a question concerning threads, handlers, loopers, etc. in android: In my application i have to take pictures from the camera preview (not pictures from the camera but rather just a preview frame) every time when the camera gets autofocus. So i want to implement some kind of "scanner". The app continues requesting autofocus and preview frames until the app detects a valid barcode in the picture. To achieve a continuous scanning process the app schould repeatedly request autofocus of the camera. At the moment when the camera got autofocus the next autofocus request should be fired immediately. Do you have any tips for implementig this?
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Jul 6, 2010
I've been looking at books scanning apps - you know, the ones that let you scan the barcodes on books you own and then identify the book and enter it into a database to help in keeping track and to avoid purchasing duplicates. Ideally, this information should be sortable using various keys. The bizarre thing is that after trying two or three, I haven't yet found one that will sort by author's last name! Honestly, who would want to sort by author's first name? (Is whatever is wrong with the People app catching or something? )
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Jul 15, 2010
I send backup tapes offsite each day, and every day I have to write down the barcode numbers and print them off so the driver can sign for them to say he has taken them.I know there is a 101 apps to scan, but they are all for shopping, is there a free app that will simply let me scan more than 1 item at a time, then show the scanned items in a report so I can email it myself from my phone?Just a text file that list barcodes in a row would be nice.
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Jul 24, 2010
Where I can more information regarding Scanning a Text File in Android.
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Feb 6, 2010
Is there a way to stop apps from scanning the phone for files every time one is opened from within the app?
I'm using PDF Viewer and every time I want to open a PDF file, it spends a while scanning the phone for PDFs - time-consuming when I have a collection of several hundred on it.
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May 11, 2010
Alright, so I'm trying to write a program for Android for a project for school, I figured out how to use Intents to scan, but once I find a product, how do I get that info into my app? For example, say I'm getting info from upcdatabase.com, I would just add the barcode number to the end of the url, but then how to I draw that data in? The same with Google search, how would I draw the data and the image of the item into the app?
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Dec 6, 2009
My camera stopped working. When I click my camera application I get the message "The application camera (process com.android.camera) has stopped unexpectedly. Please try again". It's just a blank screen?
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Jan 12, 2010
I've been searching on how to add a barcode scanner to my app. Does anybody know of any examples or know how to do this easily?
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Jul 31, 2010
Is it generally possible to have Wifi Tethering turned on (creating a Hotspot) and at the same time scanning for Wifi devices? I want several devices just discover (NOT connect) each other and log the signal strength. To do that all devices must be discoverable over Wifi and at the same time discover others.
I would just need that for some specific use case..
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Sep 8, 2010
Kindly provide the sample code for scanning Bar code for Android application.
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Apr 10, 2014
I am working on a capstone project for school, what i need is to be able to take WiFi scans (no need to connect, only scan available network BSSID and signal Levels) quickly.
Currently, the Android API takes up to 5 seconds for a scan. Is there something i can do to improve my scan rate?
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Jul 2, 2010
I am on my 3rd Evo and this one was perfect except that the 4g doesn't work, it simply keeps scanning. My previous two evos worked instantaneous. I was on the phone with a technician for an hour and still no luck. Anyone else experience this issue?
I've done everything from factory reset, updating profile, turning off phone, etc. Anyone in chicago 4g working fine?
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Sep 4, 2010
I am trying out this code for scanning wifi networks but getting null pointer exception not sure what problem I registered all permission in manifest.
IntentFilter i = new IntentFilter();
i.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i(TAG, "opening wifimanager");
WifiManager mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mWifiManager.getScanResults();
} } ,i);
mWifiManager.startScan();
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Sep 5, 2010
I am looking for an app that will let me create a Christmas list by scanning items found in store. Anyone seen one?
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Aug 10, 2010
Is it possible to change prompt text that says "place the barcode inside the viewfinder..." when launching Barcode scanner (zxing) via intent (Intent intent = new Intent("com.google.zxing.client.android.SCAN")) ?
I want to have prompt in my language, how should i do that?
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Nov 24, 2010
I've been running xtrSense and xtrRom for months with great results.
I decided to try a Froyo based Rom and my first two attempts (FroShedYo.V6 and Nonsensikal v13.2) both had the same WiFi issue.
I can't connect or even detect my wireless network. I'm 5 feet away from the AP which had great connectivity with the xtr Roms.
Settings..show Wi-Fi scanning continously.
Reboot...cycled airplane mode... nothing.
Even rewiped and reflashed.
Everything else appears to be working great.
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Apr 7, 2010
I would like to download some apps that say "Download app by scanning Barcode". I hate to ask this question but how do you go about scanning the immage on your computer screen and then download the app?
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May 3, 2012
I have coded an NFC application, but everytime i scan the tag i need to go to my application. Currently when i scan tag, a pop up menu shows other nfc applications like one from nxp...
Is there a way ,when i scan tag my application can appear or start as default app.
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Jan 10, 2010
I seem to be the only one having this problem. I got my Hero about a week ago and stumbled upon this thread, so I figured I'd try some of these apps out. Well, when I scan the barcode, three options come up, two of which are to share the URL, the other, to open the browser. Naturally, I pick the first to open the browser only to receive an error message "There are no matches in android market for the search: XXXX". What am I doing wrong? Also, I wanted to make sure my build number was correct as it suggests at the top of the thread, but I couldn't find anything like that on the HTC website.
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Nov 5, 2010
Ok here is my setup: Rom = Fresh EVO 3.4.0.1 *Kernal = 2.6.32.24-king #11
4G constantly scans and will not connect. I live in Atlanta 4G was working. I have checked my Mac Address and it matches with the phone. Any help would be appreciated. I have searched but most articles I found were from July.
Also I am on a Mac, I am rooted via unRevoked and use Rom manager to load roms.
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May 21, 2010
I just a update to rom manager and now I can scan a QR code and pow. Well I have not seen to many codes to scan. Neat I wonder if it will backup and wipe auto if needed if it knows changing rom. Has anybody tried?
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Nov 8, 2013
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]....
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Sep 10, 2013
wrong area for this but i have a alcatel one touch 960C (not even on this site) but i cant connect to wifi at ALL. its stuck on scanning and it flashs scanning sometimes. any way to access wifi files or some sort?
ive tried everything.
hard reset.
sysetem restoring
SDK (not sure if any wifi sdk's are out there)
i dont have data so i have no way but PC to access files.
how to flash nor do i now anything on roms or flashing roms.
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Jan 6, 2010
Does anyone know a good App that will scan a business card but also keep the image.I use google goggles and works great but I want something that will keep the image of the card,just like on a PC.
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Aug 25, 2010
When I check the tab to turn on 4G it is stuck on Scanning for hours. What is the correct procedure to turn on 4G on the EVO?
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Feb 18, 2010
I recently bought a Plantronics bluetooth. I went through the setup (as described in the bluetooth manual and my HTC Eris manual. It shows the bluetooth as "working" by the symbol at the top of my screen however, it's not allowing me to use it. It's fully charged, light blinking. When I clicked "scan for bluetooth" it didn't find it.
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Jul 7, 2010
Just got my Galaxy S, Very happy with the phone but having a problem with the phone scanning for media. Problem is its taking ages! I started it at 8am this moring and its still scanning at 4pm! Surely it cant take this long! I have the 8gb model with a 16gb sd card. Also dont actually hve much media on there onlyabout 1gb worth.
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May 26, 2010
Is there an actual way to take a photo of complicated maths equations or something like that and get those converted to text automatically? Combined with wolframalpha.com that would be sweet.
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May 9, 2014
I have a samsung galaxy n7000, the wifi & bluetooth aren't working nor scanning. i've tried factory reset but nothing. or a download link for jelly bean 4.1.2 XXLT5 to reflash it.
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Apr 18, 2012
I'm trying to enable the active scanning mode on my HTC Desire but still got no luck. I've forced Android and wpa supplicant to go in to active mode. I've retraced this and the forcing works but when wpa supplicant tries to set the driver in active mode it always got set in passive mode and I can't force it in to active mode.
Any way to force an android device to scan active for wifi networks? It doesn't mind if It's on another device. I'm desperate to get it to work.
And I know it's not power efficient but that's not the goal. The only goal is to scan as fast as possible. Scanning in active mode should make this possible.
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