對安卓工程師來說，在安卓下使用USB設(shè)備需要了解很多硬件的內(nèi)容，這可能會(huì)導(dǎo)致工程周期的延長或者app的不穩(wěn)定。為了將這種風(fēng)險(xiǎn)降到最低，友我科技發(fā)布了NFC讀寫器在安卓下的sdk，使用NFC讀寫器的類接口，安卓工程師就可以直接調(diào)用NFC讀寫器了，簡單可靠。
NFC讀寫器的安卓庫文件為：yoworfidreader.jar
在ADT工程中導(dǎo)入yoworfidreader.jar庫文件，即可在工程中引用NFC讀寫器的類文件
在代碼中調(diào)用：
public usbreader rfidreader;
rfidreader = new usbreader();
這樣就創(chuàng)建了NFC讀寫器的類的實(shí)體，下面只要使用rfidreader的各種方法就可以了，以下為讀寫M1卡的例子代碼：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_m1);
rbKeyA=(RadioButton) findViewById(R.id.rbkeya);
txtCardNo = (TextView) findViewById(R.id.txtcardno);
edtKey = (EditText) findViewById(R.id.edtkey);
edtKey.setText(""FFFFFFFFFFFF"");
edtBlockID = (EditText) findViewById(R.id.edtblock);
edtBlockID.setText(""1"");
edtData = (EditText) findViewById(R.id.edtdata);
edtData.setText(""11111111111111112222222222222222"");
Button button = (Button) findViewById(R.id.btnreadCard);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
txtCardNo.setText("""");
edtData.setText("""");
int BlockID = MainActivity.ValidInt( edtBlockID.getText().toString() , 63);
if(BlockID<0)
{
MainActivity.dialog(""塊號(hào)必須是0-63"",M1.this);
return;
}
if(!MainActivity.ValidHexString(edtKey.getText().toString(), 6))
{
MainActivity.dialog(""密鑰必須是6字節(jié)16進(jìn)制"",M1.this);
return;
}
if( MainActivity.rfidreader.ISO14443A.YW_RequestCard(MainActivity.rfidreader.ISO14443A.REQUESTMODE_ALL)<0)return;
byte[] CardNo=MainActivity.rfidreader.ISO14443A.YW_AntiCollideAndSelect(MainActivity.rfidreader.ISO14443A.MULTIMODE_ONE);
if(CardNo==null)return;
txtCardNo.setText(""卡號(hào)："" + MainActivity.bytesToHexString(CardNo));
byte KeyMode=MainActivity.rfidreader.ISO14443A.Key_B;
if(rbKeyA.isChecked())KeyMode=MainActivity.rfidreader.ISO14443A.Key_A;
if(MainActivity.rfidreader.ISO14443A.YW_KeyAuthorization(KeyMode, BlockID, MainActivity.HexStringtoBytes( edtKey.getText().toString()))<0)
{
MainActivity.dialog(""密鑰認(rèn)證錯(cuò)誤"",M1.this);
return;
}
byte[] Data = MainActivity.rfidreader.ISO14443A.YW_ReadaBlock(BlockID);
if(Data==null)
{
MainActivity.dialog(""讀取塊失敗"",M1.this);
return;
}
edtData.setText(MainActivity.bytesToHexString(Data));
MainActivity.rfidreader.ReaderHardware.YW_Buzzer(5, 5, 1);
}
});
Button button2 = (Button) findViewById(R.id.btnwritedata);
button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
txtCardNo.setText("""");
int BlockID = MainActivity.ValidInt( edtBlockID.getText().toString() , 63);
if(BlockID<0)
{
MainActivity.dialog(""塊號(hào)必須是0-63"",M1.this);
return;
}
if(!MainActivity.ValidHexString(edtKey.getText().toString(), 6))
{
MainActivity.dialog(""密鑰必須是6字節(jié)16進(jìn)制"",M1.this);
return;
}
if(!MainActivity.ValidHexString(edtData.getText().toString(), 16))
{
MainActivity.dialog(""數(shù)據(jù)必須是16字節(jié)16進(jìn)制"",M1.this);
return;
}
if( MainActivity.rfidreader.ISO14443A.YW_RequestCard(MainActivity.rfidreader.ISO14443A.REQUESTMODE_ALL)<0)return;
byte[] CardNo=MainActivity.rfidreader.ISO14443A.YW_AntiCollideAndSelect(MainActivity.rfidreader.ISO14443A.MULTIMODE_ONE);
if(CardNo==null)return;
txtCardNo.setText(""卡號(hào)："" + MainActivity.bytesToHexString(CardNo));
byte KeyMode=MainActivity.rfidreader.ISO14443A.Key_B;
if(rbKeyA.isChecked())KeyMode=MainActivity.rfidreader.ISO14443A.Key_A;
if(MainActivity.rfidreader.ISO14443A.YW_KeyAuthorization(KeyMode, BlockID, MainActivity.HexStringtoBytes( edtKey.getText().toString()))<0)
{
MainActivity.dialog(""密鑰認(rèn)證錯(cuò)誤"",M1.this);
return;
}
byte[] Data = MainActivity.HexStringtoBytes(edtData.getText().toString());
if(MainActivity.rfidreader.ISO14443A.YW_WriteaBlock(BlockID, Data)>0)
{
MainActivity.dialog(""數(shù)據(jù)寫入成功"",M1.this);
MainActivity.rfidreader.ReaderHardware.YW_Buzzer(5, 5, 1);
}
else
MainActivity.dialog(""數(shù)據(jù)寫入失敗"",M1.this);
}
});
}
}
支持安卓的NFC讀寫器有YW-605系列和YW-607等
安卓NFC讀寫器的在線開發(fā)指南：NFC讀寫器安卓開發(fā)指南
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