Hi,
I am new to android, and got one nexus s, so while trying to play with
NFC Capabilities, when i try to write to a mifare classic 1k card ,
Ndef.get(tag) returns null, upon searching, i find that tag is not
listed in tech list. but when i issue getTechList() command, i am able
to find
MifareClassic , NdefA and Ndefformatable are listed, so where am i
missing.
here is my code
public void onClick(View v) {
IntentFilter ndef=new
IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED );
try{
ndef.addDataType("*/*");
}catch(MalformedMimeTypeException e){
throw new RuntimeException("fail",e);
}
mFilters=new IntentFilter[]{ndef,};
showMessage( mFilters.toString());
// Setup a tech list for all NfcF tags
mTechLists = new String[][] { new String[] {
MifareClassic.class
.getName() } };
Intent intent=getIntent();
String action=intent.getAction();
if(NfcAdapter.ACTION_TECH_DISCOVERED.equals(action) ){
String msg="Discovered Tag with Intent " + intent;
status_Data.setText(msg);
Tag
tagFromintent=intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
MifareClassic mfc=MifareClassic.get(tagFromintent);
boolean auth=false;
try {
String[] ttype=tagFromintent.getTechList();
// Ndef ndef1=Ndef.get(tagFromintent); [here i am
getting null]
mfc.connect();
auth = mfc.authenticateSectorWithKeyA(0,
MifareClassic.KEY_DEFAULT);
} catch (IOException e1) {
status_Data.setText("Authentication of Block 1
Failed");
}
try {
if (auth){
write(tagFromintent);}
} catch (IOException e) {
status_Data.setText(e.toString());
} catch (FormatException e) {
status_Data.setText(e.toString());
//e.printStackTrace();
}
}else{
showMessage("Nothing to read");
}
}
};
any help will be greatly appriciated.
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