Fingerprint Scanner using Camera

Working on fingerprint scanner using camera or without, its possibility and its success rate?, I came across one of open source SDK named FingerJetFX its provide feasibilty with android too. The FingerJetFX OSE fingerprint feature extractor is platform-independent and can be built for, with appropriate changes to the make files, and run in environments with […]

How to protect Google Play public key when doing InApp Billing

Actually this is a little bit silly about protecting public key (what is the definition of public key then?) but as per the documentation by Google: To keep your public key safe from malicious users and hackers, do not embed it in any code as a literal string. Instead, construct the string at runtime from […]

make a phone call click on a button

I’m trying to make a call when I press a button in android ((Button)findViewById( OnClickListener() { @Override public void onClick(View v) { String phno=”10digits”; Intent i=new Intent(Intent.ACTION_DIAL,Uri.parse(phno)); startActivity(i); } }); But when I run and click on the button it gives me the error ERROR/AndroidRuntime(1021): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.CALL dat=9392438004 […]

How to solve “invalid resource directory name”, resource “crunch”

lately I am getting this error from eclipse: “invalid resource directory name”, resource “crunch”, type “Android AAPT Problem” what is this problem and how to solve it?

Android: How to configure FFMPEG latest version in android studio?

I want to configure FFMPEG in android studio but i cant get any document or link for that. Github on many FFMPEG lib available for android but that all are with old version. And how to run command in android? and i want to know after configure FFMPEG then how can we run FFMPEG commands. […]

TaskStackBuilder and extras for the back stack

I’m trying to use TaskStackBuilder with notifications to create a back stack for the back button to go through. Normal flow of my app: Activity A is launched from the launcher. User selects an item from A, which launches B with extras for what to load. User selects an item from B, this launches C […]

Android signing with Ant

Using Ant, I’m trying to build an Android application in release mode for distribution. My problem is at the signing process. I’ve created a keystore and alias via Eclipse using the Export Android Application wizard and the app is correctly signed if export it via Eclipse. When I try to complete the same process via […]

android databinding using “&&” logical operator

I am trying to use the and “&&” operator in xml using Android databinding, android:visibility=”@{(bean.currentSpaceId == bean.selectedSpaceId **&&** bean.currentSpaceId > 0)? View.VISIBLE: View.GONE}” but I got the compilation error: Error:Execution failed for task ‘:app:dataBindingProcessLayoutsDevDebug’. org.xml.sax.SAXParseException; systemId: file:/Users/path/app/build/intermediates/res/merged/dev/debug/layout/fragment_space.xml; lineNumber: 106; columnNumber: 89; The entity name must immediately follow the ‘&’ in the entity reference. and red […]

Genymotion Android emulator – adb access?

I downloaded Genymotion Android emulators for Oracle VirtualBox ( on my Windows 7 PC, created a virtual Jelly Bean with Google Apps device. How do I enable ADB access to it? In system settings/Developer options I already enabled “USB debugging”, but typing “adb devices” shows empty list of connected devices. Tried adding a USB port […]

Android single- and multi-stroke gestures in the same library confuses the GesturesOverlayView?

I have noticed a problem on various handsets that if you save gestures while the stroketype is set to single and then change the stroketype to multi and add some multi-stroke gestures, the multi ones are often not recognized by the GesturesOverlayView when you draw them. These can be very simple gestures such as a […]

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