android 蓝牙打印 示例源码下载

Android蓝牙打印二维码打印外卖单打印

package org.yuc.bluetooth;import java.io.BufferedInputStream;import java.io.IOException;import java.io.UnsupportedEncodingException;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.RadioGroup;import android.widget.RadioGroup.OnCheckedChangeListener;import android.widget.Toast;/** * Android蓝牙图片打印 * @author 小土豆YUC * 2015年12月15日 */public class MainActivity extends Activity { // Message types sent from the BluetoothService Handler public static final int MESSAGE_STATE_CHANGE = 1; public static final int MESSAGE_READ = 2; public static final int MESSAGE_WRITE = 3; public static final int MESSAGE_DEVICE_NAME = 4; public static final int MESSAGE_TOAST = 5; // Key names received from the BluetoothService Handler public static final String DEVICE_NAME = "device_name"; public static final String TOAST = "toast"; // Intent request codes private static final int REQUEST_CONNECT_DEVICE = 1; private static final int REQUEST_ENABLE_BT = 2; // Name of the connected device private String mConnectedDeviceName = null; // String buffer for outgoing messages private StringBuffer mOutStringBuffer; // Local Bluetooth adapter private BluetoothAdapter mBluetoothAdapter = null; // Member object for the services public static BluetoothService mService = null;private EditText print_et;private RadioGroup radioGroup1;private RadioGroup radioGroup2;//private RadioGroup radioGroup3; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// Get local Bluetooth adaptermBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();// If the adapter is null, then Bluetooth is not supportedif (mBluetoothAdapter == null) {Toast.makeText(this, "您的设备不支持蓝牙", 0).show();//finish();return;}print_et = (EditText) findViewById(R.id.print_et);print_connect_btn = (Button) findViewById(R.id.print_connect_btn);radioGroup1 = (RadioGroup) findViewById(R.id.radioGroup1);radioGroup2 = (RadioGroup) findViewById(R.id.radioGroup2);//radioGroup3 = (RadioGroup) findViewById(R.id.radioGroup3);radioGroup1.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {switch (checkedId) {case R.id.radio0:mService.printLeft();break;case R.id.radio1:mService.printCenter();break;case R.id.radio2:mService.printRight();break;}}});radioGroup2.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {switch (checkedId) {case R.id.radio0:mService.printSize(0);break;case R.id.radio1:mService.printSize(1);break;case R.id.radio2:mService.printSize(2);break;}}});//radioGroup3.setOnCheckedChangeListener(new OnCheckedChangeListener() {////@Override//public void onCheckedChanged(RadioGroup group, int checkedId) {//switch (checkedId) {//case R.id.radio0://mService.print(11);//break;//case R.id.radio1://mService.print(12);//break;//}//}//});} @Override public void onStart() { super.onStart(); if (!mBluetoothAdapter.isEnabled()) { //打开蓝牙 Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); } if (mService==null) { mService = new BluetoothService(this, mHandler); } }@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.option_menu, menu);return true;}public void onClick(View v){switch (v.getId()) {case R.id.print_btn:sendMessage(print_et.getText().toString() "\n");break;case R.id.print_img_btn: sendMessage("\n"); sendMessage("\n"); BufferedInputStream bis = null;try {bis = new BufferedInputStream(getAssets() .open("android.jpg"));} catch (IOException e) {e.printStackTrace();}Bitmap bitmap = BitmapFactory.decodeStream(bis); sendMessage(bitmap); sendMessage(" \n"); sendMessage(" \n"); sendMessage(" \n");break;case R.id.print_connect_btn:openOptionsMenu();break;case R.id.print_out_btn:sendMessage(" \n");break;}} /** * 打印 * @param message */private void sendMessage(String message) {// Check that we're actually connected before trying anythingif (mService.getState() != BluetoothService.STATE_CONNECTED) {Toast.makeText(this, "蓝牙没有连接", Toast.LENGTH_SHORT).show();return;}// Check that there's actually something to sendif (message.length() > 0) {// Get the message bytes and tell the BluetoothService to writebyte[] send;try {send = message.getBytes("GB2312");} catch (UnsupportedEncodingException e) {send = message.getBytes();}mService.write(send);}}private void sendMessage(Bitmap bitmap) {// Check that we're actually connected before trying anythingif (mService.getState() != BluetoothService.STATE_CONNECTED) {Toast.makeText(this, "蓝牙没有连接", Toast.LENGTH_SHORT).show();return;}// 发送打印图片前导指令byte[] start = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1B,0x40, 0x1B, 0x33, 0x00 };mService.write(start);/**获取打印图片的数据**///byte[] send = getReadBitMapBytes(bitmap);mService.printCenter();byte[] draw2PxPoint = PicFromPrintUtils.draw2PxPoint(bitmap);mService.write(draw2PxPoint);// 发送结束指令byte[] end = { 0x1d, 0x4c, 0x1f, 0x00 };mService.write(end);} public void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case REQUEST_CONNECT_DEVICE: // When DeviceListActivity returns with a device to connect if (resultCode == Activity.RESULT_OK) { // Get the device MAC address String address = data.getExtras() .getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS); // Get the BLuetoothDevice object BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // Attempt to connect to the device mService.connect(device); } break; case REQUEST_ENABLE_BT: // When the request to enable Bluetooth returns if (resultCode == Activity.RESULT_OK) {// setupChat(); Toast.makeText(this, "蓝牙已打开", 0); } else { Toast.makeText(this, "蓝牙没有打开", 0); finish(); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.scan: // Launch the DeviceListActivity to see devices and do scan Intent serverIntent = new Intent(this, DeviceListActivity.class); startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE); return true; case R.id.disconnect: // disconnect mService.stop(); return true; } return false; } // The Handler that gets information back from the BluetoothService private final Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MESSAGE_STATE_CHANGE: switch (msg.arg1) { case BluetoothService.STATE_CONNECTED: print_connect_btn.setText("已连接:"); print_connect_btn.append(mConnectedDeviceName); break; case BluetoothService.STATE_CONNECTING: print_connect_btn.setText("正在连接..."); break; case BluetoothService.STATE_LISTEN: case BluetoothService.STATE_NONE: print_connect_btn.setText("无连接"); break; } break; case MESSAGE_WRITE: //byte[] writeBuf = (byte[]) msg.obj; // construct a string from the buffer //String writeMessage = new String(writeBuf); break; case MESSAGE_READ: //byte[] readBuf = (byte[]) msg.obj; // construct a string from the valid bytes in the buffer //String readMessage = new String(readBuf, 0, msg.arg1); break; case MESSAGE_DEVICE_NAME: // save the connected device's name mConnectedDeviceName = msg.getData().getString(DEVICE_NAME); Toast.makeText(getApplicationContext(), "连接至" mConnectedDeviceName, Toast.LENGTH_SHORT).show(); break; case MESSAGE_TOAST: Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST), Toast.LENGTH_SHORT).show(); break; } } };private Button print_connect_btn;}