Question

I am developeing a barcode app. in which captured barcode camera image are decode through ZXing library. so simply i have download jar file and add it as external jar. but my problem is that how can i start use of that class there are no sample code at all. so can you provide me some initial thing so i can easily go through that process.

Answer 1

The way to call the ZXing SCAN Intent from your application, like this:

public Button.OnClickListener mScan = new Button.OnClickListener() {
    public void onClick(View v) {
        Intent intent = new Intent("com.google.zxing.client.android.SCAN");
        intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
        startActivityForResult(intent, 0);
    }
};

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == 0) {
        if (resultCode == RESULT_OK) {
            String contents = intent.getStringExtra("SCAN_RESULT");
            String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
            // Handle successful scan
        } else if (resultCode == RESULT_CANCELED) {
            // Handle cancel
        }
    }
}

Ref:http://code.google.com/p/zxing/wiki/ScanningViaIntent

Sample code:http://as400samplecode.blogspot.in/2011/09/android-barcode-scanner-using-zxing.html