NFC Jar
来自Waveshare Wiki
NFC SDK JAR
20200717 JAR
函数
public int a(NfcA paramNfcA);
初始化
参数： paramNfcA NFC实例NfcA
返回: 1: 初始化成功
-1: 初始化失败
public int a() ;
获取当前进度
返回: -1: 出现错误。或者异常
0-99: 进度败
100: 刷新成功
public int a(int paramInt, Bitmap paramBitmap);
图片发送函数
参数： paramInt：选择对应的墨水屏编号
paramBitmap: 需要刷新的图片
返回: -1: IO错误
0: 失败
1: 成功
2: 图片尺寸错误
| 编号 | 型号 | 宽 | 高 |
| 1 | 2.13 | 250 | 128 |
| 2 | 2.9 | 296 | 128 |
| 3 | 4.2 | 400 | 300 |
| 4 | 7.5 | 800 | 480 |
| 5 | 7.5HD | 880 | 528 |
| 6 | 2.7 | 264 | 176 |
| 7 | 2.9B | 296 | 128 |
public int a(byte[] paramArrayOfbyte) ;
密码验证
参数： paramArrayOfbyte : 验证的密码
返回: -1: IO错误
0: 未设置密码
1: 密码正确
2: 密码错误
3: 无密码固件 或者 未知设备
public int a(byte[] paramArrayOfbyte1, byte[] paramArrayOfbyte2);
密码修改
参数： paramArrayOfbyte1 : 旧密码
paramArrayOfbyte2:新密码
返回: -1: IO错误
1: 密码正确 密码修改成功
2: 密码错误 密码修改失败
3: 无密码固件 或者 未知设备
public int b(byte[] paramArrayOfbyte) ;
开启密码验证
参数： paramArrayOfbyte : 验证的密码
返回: -1: IO错误
1: 密码正确 开启密码功能成功
2: 密码错误 开启密码功能失败
3: 无密码固件 或者 未知设备
public int c(byte[] paramArrayOfbyte) ;
关闭密码验证
参数： paramArrayOfbyte : 验证的密码
返回: -1: IO错误
1: 密码正确 关闭密码功能成功
2: 密码错误 关闭密码功能失败
3: 无密码固件 或者 未知设备
示例
刷图与密码验证示例
protected void onNewIntent(Intent intent) {
// Tag writing mode
final int[] EPD_total_progress = {-1};// 当前进度 -1 上次没有终止的需要终止
final int[] Password_validation = {0};
final byte[] Password_s = new byte[15];
for(int i=0;i<Password_len;i++)
{
Password_s[i]=(byte) Password[i];//得到密码
}
final int[] whether_succeed = {1}; //1 发送函数调用成功 0发送函数调用失败
if (mWriteMode && NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) {
detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
String[] tech = detectedTag.getTechList();//得到描述符
if(tech[0].equals("android.nfc.tech.NfcA")) {//如果描述符正确则发送函数
Thread t = new Thread() {
@Override
public void run() {
Boolean success = false;
NfcA tntag;
tntag = NfcA.get(detectedTag);
final a EPD_send = new a();
EPD_send.a(tntag);//初始化
final String UID;
UID = EPD_send.a(detectedTag);
log.e(" UID"," "+UID);
if(false) {
Thread thread2 = new Thread(new Runnable() {
public void run() {
Looper.prepare();
// Toast.makeText(MainActivity.this, UID, Toast.LENGTH_LONG).show();
Toast toast=Toast.makeText(MainActivity.this, UID, Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP| Gravity.CENTER, 0, 100);
toast.show();
Looper.loop();
}
});
thread2.start();
}
Password_validation[0] = EPD_send.a(Password_s);
if(Password_validation[0] == -1){//IO错误
Looper.prepare();
Toast.makeText(MainActivity.this, R.string.IO_error,Toast.LENGTH_LONG).show();
Looper.loop();
}else if(Password_validation[0] == 1 || Password_validation[0] == 0 || Password_validation[0] == 3) { //验证密码通过 或 者没有设置密码
if(Password_validation[0] == 0 || Password_validation[0] == 3) {//0 没有设置密码 3无密码固件
Thread thread1 = new Thread(new Runnable() {//无密码提示
public void run() {
Looper.prepare();
Toast.makeText(MainActivity.this, R.string.nopassword, Toast.LENGTH_SHORT).show();
Looper.loop();
}
});
thread1.start();
}
Thread thread = new Thread(new Runnable() {//进度显示进程
@Override
public void run() {
EPD_total_progress[0] = 0;
while(true){
EPD_total_progress[0] = EPD_send.a();
if(EPD_total_progress[0] == -1 || whether_succeed[0] == 0){//如果返回-1 或者
break;
}
setStatusBody(getString(R.string.txing) + EPD_total_progress[0] +"%");//显示当前进度
if(EPD_total_progress[0] == 100 ){ //发送成功
break;
}
SystemClock.sleep(10);
}
if(EPD_total_progress[0] == -1 || whether_succeed[0] != 1){
setStatusBody(getString(R.string.txfail)); //显示 失败 字符串
}else {
setStatusBody(getString(R.string.txsuccess));//显示 成功 字符串
}
}
});//进度显示进程 END
thread.start();//进度显示进程 开启线程
try {//NFC异常中断
whether_succeed[0] = EPD_send.a(Size_Flag, bmp_send);//发送函数
if(whether_succeed[0] == 1){//发送成功
success = true;
runOnUiThread(new Runnable() {
@Override
public void run() {
checkNFCpopwindow.dismiss();
}
});
Success_Sound_Effects();
}else{//发送失败
Looper.prepare();
Toast.makeText(MainActivity.this, R.string.txfail,Toast.LENGTH_LONG).show();
Looper.loop();
}
} finally {
try {
if (success == false) {
runOnUiThread(new Runnable() {
@Override
public void run() {
checkNFCpopwindow.dismiss();
}
});
}
tntag.close();
} catch (IOException e) {
e.printStackTrace();
}
}//NFC异常中断END
// 验证密码通过 或 者没有设置密码END
} else if(Password_validation[0] == 2){//密码错误
Looper.prepare();
Toast.makeText(MainActivity.this, R.string.password_error,Toast.LENGTH_LONG).show();
Looper.loop();
log.e(" NFC"," 密码错误");
}
}
};
t.start();
}
}
}
密码验证开启/关闭示例
protected void onNewIntent(final Intent intent) {
super.onNewIntent(intent);
detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
SwitchPass();
}
private void SwitchPass() {
final a EPD_send = new a();
String password_str=((EditText)findViewById(R.id.password_edit)).getText().toString();
if(!"".equals(password_str)&&password_str.length()>=4)
{
int password_lenght = password_str.length();
char[] password_char = password_str.toCharArray();
if(detectedTag != null) {
byte[] password = new byte[password_lenght];
for(int i=0;i<password_lenght;i++)
{
password[i]=(byte) password_char[i];
}
String[] tech = detectedTag.getTechList();
if (tech[0].equals("android.nfc.tech.NfcA")) {
tntag = NfcA.get(detectedTag);
EPD_send.a(tntag);//初始化
if (Switch_flag == 1) {
// System.arraycopy(new byte[]{(byte) 0xff, (byte) 0xfe, (byte) 0xfc, (byte) password_lenght}, 0, cmd, 0, 4); //开启加密
switch (EPD_send.b(password)) {
case 1:
Toast.makeText(SwitchPasswordActivity.this, R.string.encryption_on, Toast.LENGTH_LONG).show();
break;
case 2:
Toast.makeText(SwitchPasswordActivity.this, R.string.old_password_error_prompt, Toast.LENGTH_LONG).show();
break;
case 3:
Toast.makeText(SwitchPasswordActivity.this, R.string.Passwordless_firmware, Toast.LENGTH_LONG).show();
log.e("prompt", " 无密码版本");
break;
case -1:
log.e("NFC ", " IO错误");
break;
case 0:
Toast.makeText(SwitchPasswordActivity.this, R.string.encryption_on, Toast.LENGTH_LONG).show();
log.e("prompt ", " 未设置密码");
break;
}
} else if (Switch_flag == 0) {
//System.arraycopy(new byte[]{(byte) 0xff, (byte) 0xfe, (byte) 0xfd, (byte) password_lenght}, 0, cmd, 0, 4); //关闭加密
switch (EPD_send.c(password)) {
case 1:
Toast.makeText(SwitchPasswordActivity.this, R.string.encryption_off, Toast.LENGTH_LONG).show();
break;
case 2:
Toast.makeText(SwitchPasswordActivity.this, R.string.old_password_error_prompt, Toast.LENGTH_LONG).show();
break;
case 3:
Toast.makeText(SwitchPasswordActivity.this, R.string.Passwordless_firmware, Toast.LENGTH_LONG).show();
log.e("prompt", " 无密码版本");
break;
case -1:
log.e("NFC ", " IO错误");
break;
case 0:
Toast.makeText(SwitchPasswordActivity.this, R.string.encryption_on, Toast.LENGTH_LONG).show();
log.e("prompt ", " 未设置密码");
break;
}
}
}
}
} else
{
Toast.makeText(SwitchPasswordActivity.this, R.string.password_check,Toast.LENGTH_LONG).show();
}
}
密码修改示例
protected void onNewIntent(final Intent intent) {
super.onNewIntent(intent);
detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
ChangePass();
}
private void ChangePass() {
String password_str_old=((EditText)findViewById(R.id.password_old_edit)).getText().toString();
String password_str_new=((EditText)findViewById(R.id.password_new_edit)).getText().toString();
String password_str_match=((EditText)findViewById(R.id.password_new_again_edit)).getText().toString();
if(!"".equals(password_str_old)&&!"".equals(password_str_new)&&!"".equals(password_str_match)&&password_str_old.length()>=4&&password_str_new.length()>=4&&password_str_match.length()>=4)
{
if(password_str_new.equals(password_str_match)) {
int password_old_lenght = password_str_old.length();
int password_new_lenght = password_str_new.length();
char[] password_old_char = password_str_old.toCharArray();
char[] password_new_char = password_str_new.toCharArray();
byte[] password_old_byte = new byte[password_old_lenght];
byte[] password_new_byte = new byte[password_new_lenght];
for(int i=0;i<password_old_lenght;i++) {
password_old_byte[i] = (byte) password_old_char[i];
}
for(int i=0;i<password_new_lenght;i++) {
password_new_byte[i] = (byte) password_new_char[i];
}
if (detectedTag != null) {
String[] tech = detectedTag.getTechList();
if (tech[0].equals("android.nfc.tech.NfcA")) {
tntag = NfcA.get(detectedTag);
final a EPD_send = new a();
EPD_send.a(tntag);//初始化
switch (EPD_send.a(password_old_byte,password_new_byte)){
case 1: Toast.makeText(ChangePasswordActivity.this, R.string.change_success,Toast.LENGTH_LONG).show(); break;
case 2: Toast.makeText(ChangePasswordActivity.this, R.string.old_password_error,Toast.LENGTH_LONG).show();break;
case 3: Toast.makeText(ChangePasswordActivity.this, R.string.Passwordless_firmware,Toast.LENGTH_LONG).show();break;
case -1: log.e("NFC "," IO错误"); break;
}
}
}
}
else
{
Toast.makeText(ChangePasswordActivity.this, R.string.password_no_match,Toast.LENGTH_LONG).show();
}
}
else
{
Toast.makeText(ChangePasswordActivity.this, R.string.password_check,Toast.LENGTH_LONG).show();
}
}
}