Android蓝牙连打印机
博客地址：http://blog.csdn.net/yechaoa/article/details/78666446
以Gprinter佳博打印机为例，从蓝牙到打印。很简单的 >_<
demo环境：as3.0。
app目录下新建libs文件夹，拷入jar包并add as library，具体如图
然后main文件夹目录下新建aidl文件夹
main文件夹目录下新建jniLibs文件夹
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.hardware.usb.accessory" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-feature android:name="android.hardware.usb.host" />
<service
android:name="com.gprinter.service.GpPrintService"
android:enabled="true"
android:exported="true"
android:label="GpPrintService" >
<intent-filter>
<action android:name="com.gprinter.aidl.GpPrintService" />
</intent-filter>
</service>
<service android:name="com.gprinter.service.AllService" >
</service>
* 注意：ACCESS_COARSE_LOCATION权限在6.0+需要动态获取
startService();
connection();
private void startService() {
Intent i = new Intent(this, GpPrintService.class);
startService(i);
}
private void connection() {
Log.i(TAG, "connection(MainActivity.java:90)--->> " + "connection");
conn = new PrinterServiceConnection();
final Intent intent = new Intent();
intent.setAction("com.gprinter.aidl.GpPrintService");
intent.setPackage(this.getPackageName());
bindService(intent, conn, Context.BIND_AUTO_CREATE);
}
private class PrinterServiceConnection implements ServiceConnection {
@Override
public void onServiceDisconnected(ComponentName name) {
Log.i(TAG, "onServiceDisconnected(MainActivity.java:101)--->> " + "onServiceDisconnected");
mGpService = null;
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mGpService = GpService.Stub.asInterface(service);
}
}
findViewById(R.id.button_connect).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.i(TAG, "onClick(MainActivity.java:78)--->> " + "onClick");
searchBlueToothDevice();
}
});
public void searchBlueToothDevice() {
Log.i(TAG, "searchBlueToothDevice(MainActivity.java:112)--->> " + "searchBlueToothDevice");
pdSearch = ProgressDialog.show(MainActivity.this, "", "连接中", true, true);
pdSearch.setCanceledOnTouchOutside(false);
pdSearch.show();
mBluetoothList = new ArrayList<>();
// 检查设备是否支持蓝牙
adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter == null) {
Toast.makeText(this, "当前设备不支持蓝牙", Toast.LENGTH_SHORT).show();
return;
}
// 如果蓝牙已经关闭就打开蓝牙
if (!adapter.isEnabled()) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(intent);
return;
}
if (adapter.isEnabled()) {
//开始搜索
adapter.startDiscovery();
// 设置广播信息过滤
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
// 注册广播接收器，接收并处理搜索结果
receiver = new MyBroadcastReceiver();
registerReceiver(receiver, intentFilter);
}
}
public class MyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//找到设备,有可能重复搜索同一设备,可在结束后做去重操作
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device == null) {
return;
}
if (device.getName() == null) {
return;
}
BluetoothBean bluetoothBean = new BluetoothBean();
bluetoothBean.mBluetoothName = device.getName();
bluetoothBean.mBluetoothAddress = device.getAddress();
bluetoothBean.mBluetoothDevice = adapter.getRemoteDevice(bluetoothBean.mBluetoothAddress);
mBluetoothList.add(bluetoothBean);
Log.i(TAG, "onReceive(MainActivity.java:191)--->> " + device.getName());
Log.i(TAG, "onReceive(MainActivity.java:192)--->> " + mBluetoothList.size());
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
Log.i(TAG, "onReceive(MainActivity.java:220)--->> " + "搜索完成");
pdSearch.dismiss();
if (0 == mBluetoothList.size())
Toast.makeText(MainActivity.this, "搜索不到蓝牙设备", Toast.LENGTH_SHORT).show();
else {
//去重HashSet add会返回一个boolean值，插入的值已经存在就会返回false 所以true就是不重复的
HashSet<BluetoothBean> set = new HashSet<>();
mBluetoothList2 = new ArrayList<>();
for (BluetoothBean bean : mBluetoothList) {
boolean add = set.add(bean);
if (add) {
mBluetoothList2.add(bean);
}
}
showBluetoothPop(mBluetoothList2);
}
unregisterReceiver(receiver);
}
}
}
private void showBluetoothPop(final List<BluetoothBean> bluetoothList) {
pdSearch.dismiss();
View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.layout_bluetooth, null);
ListView mListView = view.findViewById(R.id.lv_bluetooth);
MyBluetoothAdapter myBluetoothAdapter = new MyBluetoothAdapter();
mListView.setAdapter(myBluetoothAdapter);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
if (0 != mBluetoothList2.size()) {
closePopupWindow();
pdConnect = ProgressDialog.show(MainActivity.this, "", "开始连接", true, true);
pdConnect.setCanceledOnTouchOutside(false);
pdConnect.show();
connect(bluetoothList.get(position).mBluetoothAddress, bluetoothList.get(position).mBluetoothDevice);
}
}
});
pw = new PopupWindow(view, (int) (getScreenWidth() * 0.8), -2);
closePopupWindow();
pw.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
pw.setOutsideTouchable(true);
pw.setFocusable(true);
WindowManager.LayoutParams lp = this.getWindow().getAttributes();
lp.alpha = 0.7f;
getWindow().setAttributes(lp);
pw.setOnDismissListener(new PopupWindow.OnDismissListener() {
@Override
public void onDismiss() {
WindowManager.LayoutParams lp = MainActivity.this.getWindow().getAttributes();
lp.alpha = 1f;
getWindow().setAttributes(lp);
}
});
pw.setAnimationStyle(R.style.PopAnim);
//显示
pw.showAtLocation(view, Gravity.CENTER, 0, 0);
}
public synchronized void connect(String macAddress, BluetoothDevice device) {
if (mThread != null) {
mThread.interrupt();
mThread = null;
}
if (socket != null) {
try {
mGpService.closePort(0);
} catch (Exception e) {
e.printStackTrace();
}
socket = null;
}
mThread = new ConnectThread(macAddress, device);
mThread.start();
}
private class ConnectThread extends Thread {
private BluetoothDevice mmDevice;
private OutputStream mmOutStream;
public ConnectThread(String mac, BluetoothDevice device) {
mmDevice = device;
String SPP_UUID = "00001101-0000-1000-8000-00805f9b34fb";
try {
if (socket == null) {
socket = device.createRfcommSocketToServiceRecord(UUID.fromString(SPP_UUID));
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void run() {
adapter.cancelDiscovery();
try {
Log.i(TAG, "run(MainActivity.java:362)--->> " + "连接socket");
if (socket.isConnected()) {
Log.i(TAG, "run(MainActivity.java:364)--->> " + "已经连接过了");
} else {
if (socket != null) {
try {
if (mGpService != null) {
int state = mGpService.getPrinterConnectStatus(0);
switch (state) {
case GpDevice.STATE_CONNECTED:
break;
case GpDevice.STATE_LISTEN:
Log.i(TAG, "run(MainActivity.java:374)--->> " + "state:STATE_LISTEN");
break;
case GpDevice.STATE_CONNECTING:
Log.i(TAG, "run(MainActivity.java:377)--->> " + "state:STATE_CONNECTING");
break;
case GpDevice.STATE_NONE:
Log.i(TAG, "run(MainActivity.java:380)--->> " + "state:STATE_NONE");
registerBroadcast();
mGpService.openPort(0, 4, mmDevice.getAddress(), 0);
break;
default:
Log.i(TAG, "run(MainActivity.java:385)--->> " + "state:default");
break;
}
} else {
Log.i(TAG, "run(MainActivity.java:389)--->> " + "mGpService IS NULL");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
} catch (Exception connectException) {
Log.i(TAG, "run(MainActivity.java:397)--->> " + "连接失败");
try {
if (socket != null) {
mGpService.closePort(0);
socket = null;
}
} catch (Exception closeException) {
}
}
}
}
private BroadcastReceiver printerStatusBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (ACTION_CONNECT_STATUS.equals(intent.getAction())) {
int type = intent.getIntExtra(GpPrintService.CONNECT_STATUS, 0);
int id = intent.getIntExtra(GpPrintService.PRINTER_ID, 0);
if (type == GpDevice.STATE_CONNECTING) {
Log.i(TAG, "onReceive(MainActivity.java:425)--->> " + "STATE_CONNECTING");
} else if (type == GpDevice.STATE_NONE) {
Log.i(TAG, "onReceive(MainActivity.java:427)--->> " + "STATE_NONE");
showErrorDialog();
} else if (type == GpDevice.STATE_VALID_PRINTER) {
//打印机-有效的打印机
Log.i(TAG, "onReceive(MainActivity.java:431)--->> " + "STATE_VALID_PRINTER");
} else if (type == GpDevice.STATE_INVALID_PRINTER) {
Log.i(TAG, "onReceive(MainActivity.java:433)--->> " + "STATE_INVALID_PRINTER");
} else if (type == GpDevice.STATE_CONNECTED) {
//表示已连接可以打印
Log.i(TAG, "onReceive(MainActivity.java:436)--->> " + "STATE_CONNECTED");
unregisterReceiver(printerStatusBroadcastReceiver);
showSuccessDialog();
} else if (type == GpDevice.STATE_LISTEN) {
Log.i(TAG, "onReceive(MainActivity.java:440)--->> " + "STATE_LISTEN");
}
}
}
};
private void showSuccessDialog() {
pdSearch.dismiss();
DialogInterface.OnClickListener mOnClickListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case Dialog.BUTTON_POSITIVE:
printOrder();
break;
case Dialog.BUTTON_NEGATIVE:
dialog.dismiss();
break;
}
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("提示");
builder.setMessage("连接成功，是否开始打印?");
builder.setPositiveButton("确定", mOnClickListener);
builder.setNegativeButton("取消", mOnClickListener);
builder.create().show();
}
private void printOrder() {
Log.i(TAG, "printOrder(MainActivity.java:495)--->> " + "printOrder");
LabelCommand tsc = new LabelCommand();
tsc.addSize(40, 30); // 设置标签尺寸，按照实际尺寸设置
tsc.addGap(1); // 设置标签间隙，按照实际尺寸设置，如果为无间隙纸则设置为0
tsc.addDirection(LabelCommand.DIRECTION.FORWARD, LabelCommand.MIRROR.NORMAL);// 设置打印方向
tsc.addReference(0, 0);// 设置原点坐标
tsc.addTear(EscCommand.ENABLE.ON); // 撕纸模式开启
Log.i(TAG, "sendLabel(MainActivity.java:502)--->> " + EscCommand.ENABLE.ON.getValue());
tsc.addCls();// 清除打印缓冲区
// 绘制简体中文
tsc.addText(30, 20, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"花满楼");
tsc.addText(30, 70, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"仓库：1号仓");
//180
tsc.addText(200, 20, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"箱号：2");
tsc.addText(30, 110, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"线路：A19");
tsc.addText(30, 150, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"数量：5");
tsc.addText(30, 190, LabelCommand.FONTTYPE.SIMPLIFIED_CHINESE, LabelCommand.ROTATION.ROTATION_0, LabelCommand.FONTMUL.MUL_1, LabelCommand.FONTMUL.MUL_1,
"日期：2017年11月21日");
// 绘制图片
// Bitmap b = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
// tsc.addBitmap(20, 50, LabelCommand.BITMAP_MODE.OVERWRITE, b.getWidth(), b);
//二维码
tsc.addQRCode(200, 70, LabelCommand.EEC.LEVEL_L, 4, LabelCommand.ROTATION.ROTATION_0, " www.gprinter.com.cn");
// 绘制一维条码
// tsc.add1DBarcode(20, 250, LabelCommand.BARCODETYPE.CODE128, 100, LabelCommand.READABEL.EANBEL, LabelCommand.ROTATION.ROTATION_0, "Gprinter");
tsc.addPrint(1, 1); // 打印标签
tsc.addSound(2, 100); // 打印标签后 蜂鸣器响
// tsc.addCashdrwer(LabelCommand.FOOT.F5, 255, 255);
Vector<Byte> datas = tsc.getCommand(); // 发送数据
byte[] bytes = GpUtils.ByteTo_byte(datas);
String str = Base64.encodeToString(bytes, Base64.DEFAULT);
int rel;
try {
rel = mGpService.sendLabelCommand(0, str);
GpCom.ERROR_CODE r = GpCom.ERROR_CODE.values()[rel];
if (r != GpCom.ERROR_CODE.SUCCESS) {
Toast.makeText(getApplicationContext(), GpCom.getErrorText(r), Toast.LENGTH_SHORT).show();
}
} catch (RemoteException e) {
e.printStackTrace();
}
}
以上基本是核心代码了，注释都有，按照上面这个顺序来走的话思路还是很清晰的
（就是权限没有动态获取，可参考Android6.0运行时权限。）