android 调用蓝牙打印机（ESC/POS 热敏打印机）打印小票和图片

其中对蓝牙配对和连接打印功能进行了封装，可以快速实现蓝牙打印功能

package com.xmwdkk.boothprint;import android.Manifest;import android.bluetooth.BluetoothAdapter;import android.content.Intent;import android.os.Build;import android.os.Bundle;import android.text.TextUtils;import android.view.View;import android.widget.TextView;import com.xmwdkk.boothprint.base.AppInfo;import com.xmwdkk.boothprint.bt.BluetoothActivity;import com.xmwdkk.boothprint.print.PrintMsgEvent;import com.xmwdkk.boothprint.print.PrintUtil;import com.xmwdkk.boothprint.print.PrinterMsgType;import com.xmwdkk.boothprint.util.ToastUtil;import de.greenrobot.event.EventBus;/*** * Created by liugruirong on 2017/8/3. */public class MainActivity extends BluetoothActivity implements View.OnClickListener { TextView tv_bluename; TextView tv_blueadress; boolean mBtEnable = true; int PERMISSION_REQUEST_COARSE_LOCATION=2; /** * bluetooth adapter */ BluetoothAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv_bluename =findViewById(R.id.tv_bluename); tv_blueadress =findViewById(R.id.tv_blueadress); findViewById(R.id.button4).setOnClickListener(this); findViewById(R.id.button5).setOnClickListener(this); findViewById(R.id.button6).setOnClickListener(this); findViewById(R.id.button).setOnClickListener(this); //6.0以上的手机要地理位置权限 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION); } EventBus.getDefault().register(MainActivity.this); } @Override protected void onStart() { super.onStart(); BluetoothController.init(this); } @Override public void btStatusChanged(Intent intent) { super.btStatusChanged(intent); BluetoothController.init(this); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.button4: startActivity(new Intent(MainActivity.this,SearchBluetoothActivity.class)); break; case R.id.button5: if (TextUtils.isEmpty(AppInfo.btAddress)){ ToastUtil.showToast(MainActivity.this,"请连接蓝牙..."); startActivity(new Intent(MainActivity.this,SearchBluetoothActivity.class)); }else { if ( mAdapter.getState()==BluetoothAdapter.STATE_OFF ){//蓝牙被关闭时强制打开 mAdapter.enable(); ToastUtil.showToast(MainActivity.this,"蓝牙被关闭请打开..."); }else { ToastUtil.showToast(MainActivity.this,"打印测试..."); Intent intent = new Intent(getApplicationContext(), BtService.class); intent.setAction(PrintUtil.ACTION_PRINT_TEST); startService(intent); } } break; case R.id.button6: if (TextUtils.isEmpty(AppInfo.btAddress)){ ToastUtil.showToast(MainActivity.this,"请连接蓝牙..."); startActivity(new Intent(MainActivity.this,SearchBluetoothActivity.class)); }else { ToastUtil.showToast(MainActivity.this,"打印测试..."); Intent intent2 = new Intent(getApplicationContext(), BtService.class); intent2.setAction(PrintUtil.ACTION_PRINT_TEST_TWO); startService(intent2); } case R.id.button: if (TextUtils.isEmpty(AppInfo.btAddress)){ ToastUtil.showToast(MainActivity.this,"请连接蓝牙..."); startActivity(new Intent(MainActivity.this,SearchBluetoothActivity.class)); }else { ToastUtil.showToast(MainActivity.this,"打印图片..."); Intent intent2 = new Intent(getApplicationContext(), BtService.class); intent2.setAction(PrintUtil.ACTION_PRINT_BITMAP); startService(intent2); }// startActivity(new Intent(MainActivity.this,TextActivity.class)); break; } } /** * handle printer message * * @param event print msg event */ public void onEventMainThread(PrintMsgEvent event) { if (event.type == PrinterMsgType.MESSAGE_TOAST) { ToastUtil.showToast(MainActivity.this,event.msg); } } @Override protected void onDestroy() { super.onDestroy(); EventBus.getDefault().register(MainActivity.this); }}