android 判断有线耳机、蓝牙耳机连接

参考：http://blog.csdn.net/mu399/article/details/38516039

程序加载时获取有线耳机状态：

AudioManager  audoManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

mContext = getApplicationContext();
mContext.registerReceiver(mReceiver, makeFilter());
if(audoManager.isWiredHeadsetOn()){
Toast.makeText(MainActivity.this,"耳机ok",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(MainActivity.this,"耳机不ok",Toast.LENGTH_SHORT).show();
}

程序加载时获取蓝牙耳机与有限耳机的状态：

public int getheadsetStatsu(){
AudioManager  audoManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

//      IntentFilter iFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
//      Intent iStatus = registerReceiver(null, iFilter);
//      boolean isConnected = iStatus.getIntExtra("state", 0) == 1;
//
//      if(isConnected){
//         Toast.makeText(MainActivity.this,"耳机ok",Toast.LENGTH_SHORT).show();
//      }

if(audoManager.isWiredHeadsetOn()){
return 1;
}else{
Toast.makeText(MainActivity.this,"耳机不ok",Toast.LENGTH_SHORT).show();
}

ba = BluetoothAdapter.getDefaultAdapter();

//      int isBlueCon;//蓝牙适配器是否存在，即是否发生了错误
if (ba == null){
//         isBlueCon = -1;     //error
return -1;
}
else if(ba.isEnabled()) {
int a2dp = ba.getProfileConnectionState(BluetoothProfile.A2DP);              //可操控蓝牙设备，如带播放暂停功能的蓝牙耳机
int headset = ba.getProfileConnectionState(BluetoothProfile.HEADSET);        //蓝牙头戴式耳机，支持语音输入输出
int health = ba.getProfileConnectionState(BluetoothProfile.HEALTH);          //蓝牙穿戴式设备

//查看是否蓝牙是否连接到三种设备的一种，以此来判断是否处于连接状态还是打开并没有连接的状态
int flag = -1;
if (a2dp == BluetoothProfile.STATE_CONNECTED) {
flag = a2dp;
} else if (headset == BluetoothProfile.STATE_CONNECTED) {
flag = headset;
} else if (health == BluetoothProfile.STATE_CONNECTED) {
flag = health;
}
//说明连接上了三种设备的一种
if (flag != -1) {
//            isBlueCon = 1;            //connected
return 2;
}
}
return -2;
}

添加蓝牙耳机与有限耳机的监听：

private int isheadset=2;

//默认值为2，这样，软件启动时，默认耳机是正常的：

private void registerHeadsetPlugReceiver() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.intent.action.HEADSET_PLUG");
registerReceiver(headsetPlugReceiver, intentFilter);

// for bluetooth headset connection receiver
IntentFilter bluetoothFilter = new IntentFilter(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
registerReceiver(headsetPlugReceiver, bluetoothFilter);
}

private BroadcastReceiver headsetPlugReceiver = new BroadcastReceiver() {

@Override
public void onReceive(Context context, Intent intent) {

String action = intent.getAction();
if (BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED.equals(action)) {
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if(BluetoothProfile.STATE_DISCONNECTED == adapter.getProfileConnectionState(BluetoothProfile.HEADSET)) {
isheadset--; //Bluetooth headset is now disconnected
}else{
isheadset++;
}
} else if ("android.intent.action.HEADSET_PLUG".equals(action)) {
if (intent.hasExtra("state")) {
if (intent.getIntExtra("state", 0) == 0) {
isheadset--;
}else if(intent.getIntExtra("state", 0) == 1){
isheadset++;
}
}
}
}

};