that is my university project for read the qr code using android.that was part of my project.so you want to use the QRDroid application for this.because that source code support that application,you first download QRDroid for your mobile and use this.
(Note that QR Droid package is “la.droid.qr“, so that’s why all actions have that prefix) You call one of this actions in 3 steps:
Create a new Intent. For example: Intent qrDroid = new Intent( “la.droid.qr.scan” );
Optionally, set any extra parameter: qrDroid.putExtra( “la.droid.qr.complete” , true);
Finally, start activity and wait fo a result: startActivityForResult(qrDroid, 0);
Tips: You can preview the content of files by clicking file names^_^