Android 蓝牙操作－－读取远程已配对的蓝牙设备

1》在AndroidManifest.xml文件中添加相关权限

2》获取信息，具体详见代码注示2,3,4,5

package com.myapp.bluetoothdemo;

import java.util.Iterator;
import java.util.List;
import java.util.Set;

import android.support.v7.app.ActionBarActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.os.RemoteCallbackList;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends ActionBarActivity {

	// 声明控件
	private Button scanBlueDev_btn;

	// 本地蓝牙设备
	private BluetoothAdapter localBlueTooth;

	// 与本地蓝牙设备配对的远程蓝牙设备
	private Set remoteBlueToothes;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		init();
	}

	private void init() {
		scanBlueDev_btn = (Button) findViewById(R.id.scanBlueDev_btn);
		scanBlueDev_btn.setOnClickListener(blueDevClickListener);
	}

	OnClickListener blueDevClickListener = new OnClickListener() {

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			switch (v.getId()) {
			case R.id.scanBlueDev_btn:

				scanBlueDevices();
				break;

			default:
				break;
			}
		}
	};

	private void scanBlueDevices() {
		// 2.得到本地蓝牙设备
		localBlueTooth = BluetoothAdapter.getDefaultAdapter();
		// 3. 判断本地是否有蓝牙设备
		if (localBlueTooth != null) {// 本地有蓝牙设备

			// 4.判断本地蓝牙设备是否已经打开
			if (!localBlueTooth.isEnabled()) {// 本地蓝牙未打开，提示打开蓝牙

				Intent blueToothIntent = new Intent(
						BluetoothAdapter.ACTION_REQUEST_ENABLE);
				startActivity(blueToothIntent);
			}
			// 5.获取已配对的远程蓝牙设备
			// 注意：即使本地蓝牙未打开，也可以得到已配对的远程蓝牙设备，因为这些信息已经存储在本地了。
			remoteBlueToothes = localBlueTooth.getBondedDevices();
			if (remoteBlueToothes.size() > 0) {
				for (Iterator iterator = remoteBlueToothes.iterator(); iterator
						.hasNext();) {
					BluetoothDevice bluetoothDevice = (BluetoothDevice) iterator
							.next();
					Log.i("CXC", bluetoothDevice.getAddress());
				}

			}

		} else {// 本地没有蓝牙设备
			Log.i("CXC", "本地没有蓝牙设备");
		}

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}