如何从我的Android应用程序连接到蓝牙耳机?我发现了很多有关发现蓝牙设备和配对的教程,而很少有关于连接的教程。
首先,您需要确保已启用蓝牙,然后搜索未配对的设备,然后使用设备地址,将设备配对。
成功配对后,您将需要连接到设备以及HSP或HFP配置文件。请注意,如果没有HSP(耳机配置文件)或HFP(免提配置文件),您将无法连接呼叫并将其串流到耳机或扬声器。
我列出了步骤,以便您可以通过搜索每个步骤轻松找到更多详细信息。希望这对您有所帮助。
更新
我会尽力帮助您:在“ src”文件夹下添加一个名称为android.bluetooth的新包,然后创建IBluetoothHeadset.aidl
使用以下代码:
package android.bluetooth;
import android.bluetooth.BluetoothDevice;
interface IBluetoothHeadset {
// Public API
boolean connect(in BluetoothDevice device); //Api 11 and above
boolean connectHeadset(in BluetoothDevice device); // Below Api 11
boolean disconnect(in BluetoothDevice device);
boolean disconnectHeadset(in BluetoothDevice device);
List<BluetoothDevice> getConnectedDevices();
List<BluetoothDevice> getDevicesMatchingConnectionStates(in int[] states);
int getConnectionState(in BluetoothDevice device);
int getState(in BluetoothDevice device);
boolean setPriority(in BluetoothDevice device, int priority);
int getPriority(in BluetoothDevice device);
boolean startVoiceRecognition(in BluetoothDevice device);
boolean stopVoiceRecognition(in BluetoothDevice device);
boolean isAudioConnected(in BluetoothDevice device);
boolean sendVendorSpecificResultCode(in BluetoothDevice device,
in String command,
in String arg);
// APIs that can be made public in future
int getBatteryUsageHint(in BluetoothDevice device);
// Internal functions, not be made public
boolean acceptIncomingConnect(in BluetoothDevice device);
boolean rejectIncomingConnect(in BluetoothDevice device);
int getAudioState(in BluetoothDevice device);
boolean isAudioOn();
boolean connectAudio();
boolean disconnectAudio();
boolean startScoUsingVirtualVoiceCall(in BluetoothDevice device);
boolean stopScoUsingVirtualVoiceCall(in BluetoothDevice device);
void phoneStateChanged(int numActive, int numHeld, int callState, String number, int type);
void clccResponse(int index, int direction, int status, int mode, boolean mpty,
String number, int type);
}
然后在你的活动中
BluetoothDevice DeviceToConnect;
IBluetoothHeadset ibth;
//IBluetoothHeadset instance used to connect and disconnect headset afterwards
// Create and Register BroadCastListener for Action "HEADSET_INTERFACE_CONNECTED"
// In Broadcast your code has to be something like that
// if(ibth != null) ibth.connect(DeviceToConnect);
//Then After Pairing DeviceToConnect;
Intent i = new Intent(IBluetoothHeadset.class.getName());
if (bindService(i, HSPConnection, Context.BIND_AUTO_CREATE)) {
} else {
Log.e("HSP FAILED", "Could not bind to Bluetooth HFP Service");
}
//Method for bind
public static ServiceConnection HSPConnection= new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
ibth = IBluetoothHeadset.Stub.asInterface(service);
//ibth instance used to connect and disconnect headset afterwards
Intent intent = new Intent();
intent.setAction("HEADSET_INTERFACE_CONNECTED");
//same as the one we register earlier for broadcastreciever
ctx.sendBroadcast(intent);
//ctx is Instance of Context
}
@Override
public void onServiceDisconnected(ComponentName name) {
ibth=null;
}
};
更新2:
<intent-filter>
<action android:name="android.bluetooth.device.action.ACL_CONNECTED" />
<action android:name="android.bluetooth.device.action.ACL_DISCONNECT_REQUESTED" />
<action android:name="android.bluetooth.device.action.ACL_DISCONNECTED" />
</intent-filter>
这些是您必须添加到广泛的广播接收器中的过滤器。
ACL_CONNECTED表示何时连接了蓝牙,ACL_DISCONNECTED表示蓝牙断开了连接
对于特定的设备,您必须检查广播接收器中的意图/上下文
因此,您的新Receiver(包括以前的Receiver)将如下所示:
BroadcastReceiver bcr = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
//Device found
}
else if (BluetoothAdapter.ACTION_ACL_CONNECTED.equals(action)) {
//Device is now connected
}
else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
//Done searching
}
else if (BluetoothAdapter.ACTION_ACL_DISCONNECT_REQUESTED.equals(action)) {
//Device is about to disconnect
}
else if (BluetoothAdapter.ACTION_ACL_DISCONNECTED.equals(action)) {
//Device has disconnected add whatever way u want to be notified here
//e.g music-vibration-screen light
}else if("HEADSET_INTERFACE_CONNECTED".equals(action){
if(ibth != null) ibth.connect(DeviceToConnect);
}
}
};
我忘了补充一点,您需要清单中的以下2个权限:
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
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