android蓝牙测试

1.添加权限

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

2.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"    tools:context="com.example.bluetoothtest.MainActivity" >    <ListView        android:id="@+id/listView1"        android:layout_width="match_parent"        android:layout_height="match_parent" >    </ListView></RelativeLayout>

3.MainActivity.java

package com.example.bluetoothtest;import java.util.ArrayList;import java.util.List;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.widget.ArrayAdapter;import android.widget.ListView;import android.widget.Toast;public class MainActivity extends Activity {    private BluetoothAdapter bluetoothAdapter = BluetoothAdapter            .getDefaultAdapter();    private List<BluetoothDevice> deviceList = new ArrayList<BluetoothDevice>();    private int REQUEST_ENABLE_BT = 1;    private ListView listView;    private ArrayAdapter<String> adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        listView = (ListView)findViewById(R.id.listView1);        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);        listView.setAdapter(adapter);        if (bluetoothAdapter == null) {            Toast.makeText(getApplicationContext(), "bluetooth not exist!",                    Toast.LENGTH_SHORT).show();            finish();        } else if (!bluetoothAdapter.isEnabled()) {            // Show a system activity that allows the user to turn on Bluetooth            Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);            startActivityForResult(intent, REQUEST_ENABLE_BT);        }    }    @Override    protected void onStart() {        super.onStart();        // 注册接收器        Intent discoverIntent = new Intent(                BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);        // 开启搜索看见模式，最长10s        discoverIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,                10);        startActivity(discoverIntent);        IntentFilter discoverFilter = new IntentFilter(                BluetoothAdapter.ACTION_DISCOVERY_FINISHED);        registerReceiver(discover_R, discoverFilter);        IntentFilter findFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);        registerReceiver(find_R, findFilter);        bluetoothAdapter.startDiscovery();    }    @Override    protected void onDestroy() {        super.onDestroy();        if (bluetoothAdapter != null) {            bluetoothAdapter.cancelDiscovery();            bluetoothAdapter.disable();        }    }    // ACTION_DISCOVERY_FINISHED，搜索结束后追加已配对的设备    // getName()这一步比较漫长，“已配对”那句话要等好一会儿才出现    BroadcastReceiver discover_R = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            getName();            unregisterReceiver(find_R);            unregisterReceiver(this);        }    };    // ACTION_FOUND，这是搜索到的所有蓝牙（未配对+已配对）    BroadcastReceiver find_R = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);            deviceList.add(device);            adapter.add(device.getName());        }    };    private void getName() {        Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();        if(pairedDevices.size() > 0){            for(BluetoothDevice device : pairedDevices){                deviceList.add(device);                adapter.add(device.getName()+"已配对！");            }        }    }}

注意点：在执行getBondedDevices时候会花费一点时间，一开始我不知道，“已配对”一直没出现，以为出错了。后来上了趟厕所回来发现就有了！！！！尴尬！