Android中蓝牙的基本使用----BluetoothAdapter类简介

package com.qin.bt; import android.app.Activity; import android.os.Bundle; import java.util.Iterator; import java.util.Set; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity implements OnClickListener { private static String TAG = "Bluetooth_State"; private BluetoothAdapter mBluetoothAdapter; // 本机蓝牙适配器对象 private TextView btDesc; private Button btOpen; private Button btClose; private Button btOpenBySystem; // 调用系统API去打开蓝牙 private Button btDiscoveryDevice; private Button btCancelDiscovery; private Button btDiscoveryBySystem; //调用系统Api去扫描蓝牙设备 /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); // 获得本机蓝牙适配器对象引用 if (mBluetoothAdapter == null) { toast("对不起 ，您的机器不具备蓝牙功能"); return; } IntentFilter bluetoothFilter = new IntentFilter(); bluetoothFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); bluetoothFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED); this.registerReceiver(BluetoothReciever, bluetoothFilter); //蓝牙扫描相关设备 IntentFilter btDiscoveryFilter = new IntentFilter(); btDiscoveryFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED); btDiscoveryFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); btDiscoveryFilter.addAction(BluetoothDevice.ACTION_FOUND); btDiscoveryFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); this.registerReceiver(BTDiscoveryReceiver, btDiscoveryFilter); int initialBTState = mBluetoothAdapter.getState(); printBTState(initialBTState); // 初始时蓝牙状态 initialViews(); btDesc.setText(" Name : " + mBluetoothAdapter.getName() + " Address : " + mBluetoothAdapter.getAddress() + " Scan Mode --" + mBluetoothAdapter.getScanMode()); //打印处当前已经绑定成功的蓝牙设备 Set<BluetoothDevice> bts = mBluetoothAdapter.getBondedDevices(); Iterator<BluetoothDevice> iterator = bts.iterator(); while(iterator.hasNext()) { BluetoothDevice bd = iterator.next() ; Log.i(TAG , " Name : " + bd.getName() + " Address : "+ bd.getAddress() ); ; Log.i(TAG, "Device class" + bd.getBluetoothClass()); } BluetoothDevice findDevice = mBluetoothAdapter.getRemoteDevice("00:11:22:33:AA:BB"); Log.i(TAG , "findDevice Name : " + findDevice.getName() + " findDevice Address : "+ findDevice.getAddress() ); ; Log.i(TAG , "findDevice class" + findDevice.getBluetoothClass()); } private void initialViews() { btDesc = (TextView) findViewById(R.id.btDesc); btOpen = (Button) findViewById(R.id.btOpen); btClose = (Button) findViewById(R.id.btClose); btOpenBySystem = (Button) findViewById(R.id.btOpenBySystem); btDiscoveryDevice = (Button) findViewById(R.id.btDiscoveryDevice); btCancelDiscovery = (Button) findViewById(R.id.btCancelDiscovery); btDiscoveryBySystem = (Button) findViewById(R.id.btDiscoveryBySystem); btOpen.setOnClickListener(this); btClose.setOnClickListener(this); btOpenBySystem.setOnClickListener(this); btDiscoveryDevice.setOnClickListener(this); btCancelDiscovery.setOnClickListener(this); btDiscoveryBySystem.setOnClickListener(this); } //蓝牙开个状态以及扫描状态的广播接收器 private BroadcastReceiver BluetoothReciever = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction())) { Log.v(TAG, "### Bluetooth State has changed ##"); int btState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.STATE_OFF); printBTState(btState); } else if(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED.equals(intent.getAction())) { Log.v(TAG, "### ACTION_SCAN_MODE_CHANGED##"); int cur_mode_state = intent.getIntExtra(BluetoothAdapter.EXTRA_SCAN_MODE, BluetoothAdapter.SCAN_MODE_NONE); int previous_mode_state = intent.getIntExtra(BluetoothAdapter.EXTRA_PREVIOUS_SCAN_MODE, BluetoothAdapter.SCAN_MODE_NONE); Log.v(TAG, "### cur_mode_state ##" + cur_mode_state + " ~~ previous_mode_state" + previous_mode_state); } } }; //蓝牙扫描时的广播接收器 private BroadcastReceiver BTDiscoveryReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(intent.getAction())) { Log.v(TAG, "### BT ACTION_DISCOVERY_STARTED ##"); } else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(intent.getAction())) { Log.v(TAG, "### BT ACTION_DISCOVERY_FINISHED ##"); } else if(BluetoothDevice.ACTION_FOUND.equals(intent.getAction())) { Log.v(TAG, "### BT BluetoothDevice.ACTION_FOUND ##"); BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); if(btDevice != null) Log.v(TAG , "Name : " + btDevice.getName() + " Address: " + btDevice.getAddress()); } else if(BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(intent.getAction())) { Log.v(TAG, "### BT ACTION_BOND_STATE_CHANGED ##"); int cur_bond_state = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, BluetoothDevice.BOND_NONE); int previous_bond_state = intent.getIntExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE, BluetoothDevice.BOND_NONE); Log.v(TAG, "### cur_bond_state ##" + cur_bond_state + " ~~ previous_bond_state" + previous_bond_state); } } }; private void printBTState(int btState) { switch (btState) { case BluetoothAdapter.STATE_OFF: toast("蓝牙状态:已关闭"); Log.v(TAG, "BT State ： BluetoothAdapter.STATE_OFF ###"); break; case BluetoothAdapter.STATE_TURNING_OFF: toast("蓝牙状态:正在关闭"); Log.v(TAG, "BT State : BluetoothAdapter.STATE_TURNING_OFF ###"); break; case BluetoothAdapter.STATE_TURNING_ON: toast("蓝牙状态:正在打开"); Log.v(TAG, "BT State ：BluetoothAdapter.STATE_TURNING_ON ###"); break; case BluetoothAdapter.STATE_ON: toast("蓝牙状态:已打开"); Log.v(TAG, "BT State ：BluetoothAdapter.STATE_ON ###"); break; default: break; } } private final int R