android 蓝牙搜索

1.搜索蓝牙权限

<uses-permission android:name="android.permission.BLUETOOTH" /><uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

2.MainActivity.java

package com.example.bluetooth;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Set;import android.app.Activity;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.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {private ListView tvBlueName;private Map<String, String> map;private List<Map<String,String>> list;private DeviceAdapter adapter;private BluetoothAdapter mBluetoothAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tvBlueName = (ListView) findViewById(R.id.textView1);mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();//获取已经绑定的蓝牙设备信息Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices();list = new ArrayList<Map<String,String>>();if(devices.size() > 0){for(BluetoothDevice bluetoothDevice : devices){map = new HashMap<String, String>();map.put("name", bluetoothDevice.getName());map.put("address", bluetoothDevice.getAddress());list.add(map);}adapter = new DeviceAdapter();tvBlueName.setAdapter(adapter);}// 注册用以接收到已搜索到的蓝牙设备的receiver          IntentFilter mFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);          registerReceiver(mReceiver, mFilter);                  // 注册搜索完时的receiver          mFilter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);          registerReceiver(mReceiver, mFilter);          findViewById(R.id.button1).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {setProgressBarIndeterminateVisibility(true);          setTitle("正在扫描....");          // 如果正在搜索，就先取消搜索          if (mBluetoothAdapter.isDiscovering()) {              mBluetoothAdapter.cancelDiscovery();          }          // 开始搜索蓝牙设备,搜索到的蓝牙设备通过广播返回          mBluetoothAdapter.startDiscovery();  }});}private BroadcastReceiver mReceiver = new BroadcastReceiver() {            @Override          public void onReceive(Context context, Intent intent) {              String action = intent.getAction();              if(action.equals(BluetoothDevice.ACTION_FOUND)){            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);            //获取未绑定的蓝牙设备            if(device.getBondState() != BluetoothDevice.BOND_BONDED){            map = new HashMap<String, String>();    map.put("name", device.getName());    map.put("address", device.getAddress());            list.add(map);            }            adapter.notifyDataSetChanged();            }else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {                  setProgressBarIndeterminateVisibility(false);                  setTitle("搜索蓝牙设备");              }         }      };          class DeviceAdapter extends BaseAdapter{@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int arg0) {return list.get(arg0);}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View v = getLayoutInflater().inflate(R.layout.item,null);TextView tv1 = (TextView) v.findViewById(R.id.name);TextView tv2 = (TextView) v.findViewById(R.id.address);tv1.setText(list.get(position).get("name"));tv2.setText(list.get(position).get("address"));return v;}    }}

3.activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <Button        android:id="@+id/button1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:text="搜索" />    <ListView        android:id="@+id/textView1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignRight="@+id/button1"        android:layout_below="@+id/button1"        android:layout_marginTop="10dp" /></RelativeLayout>