写了一个可以扫描附近蓝牙设备的小演示,可以查看蓝牙设备的设备名和Mac地址
代码量不多,很容易看懂
/* *
*叶应是叶
*时间:2017/9/8二十13
*描述:
*/公开课ScanDeviceActivity延伸AppCompatActivity {
私人LoadingDialog LoadingDialog;
私人DeviceAdapter DeviceAdapter;
私人BluetoothAdapter BluetoothAdapter;
私人处理程序处理程序=new处理程序();
私人BroadcastReceiver discoveryReceiver=new BroadcastReceiver () {
@Override
公共空间>/* *
*叶应是叶
*时间:2017/9/8 20:02
*描述:
*/公开课ConnectA2dpActivity延伸AppCompatActivity {
私人DeviceAdapter DeviceAdapter;
私人BluetoothAdapter BluetoothAdapter;
私人处理程序处理程序=new处理程序();
私人BluetoothA2dp BluetoothA2dp;
私人LoadingDialog LoadingDialog;
私人最终字符串标签=癈onnectA2dpActivity”;
私人BroadcastReceiver a2dpReceiver=new BroadcastReceiver () {
@Override
公共空间onReceive(上下文语境,意图意图){
开关(intent.getAction ()) {
案例BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED:
int connectState=intent.getIntExtra (BluetoothA2dp。EXTRA_STATE BluetoothA2dp.STATE_DISCONNECTED);
如果(connectState==BluetoothA2dp.STATE_DISCONNECTED) {
Toast.makeText (ConnectA2dpActivity。这个,”已断开连接”,Toast.LENGTH_SHORT),告诉();
}else if (connectState==BluetoothA2dp.STATE_CONNECTED) {
Toast.makeText (ConnectA2dpActivity。这个,”已连接”,Toast.LENGTH_SHORT),告诉();
}
打破;
案例BluetoothA2dp.ACTION_PLAYING_STATE_CHANGED:
int playState=intent.getIntExtra (BluetoothA2dp。EXTRA_STATE BluetoothA2dp.STATE_NOT_PLAYING);
如果(playState==BluetoothA2dp.STATE_PLAYING) {
Toast.makeText (ConnectA2dpActivity。这个,”处于播放状态”,Toast.LENGTH_SHORT),告诉();
}else if (playState==BluetoothA2dp.STATE_NOT_PLAYING) {
Toast.makeText (ConnectA2dpActivity。这个,”未在播放”,Toast.LENGTH_SHORT),告诉();
}
打破;
}
}
};
私人BroadcastReceiver discoveryReceiver=new BroadcastReceiver () {
@Override
公共空间onReceive(上下文语境,意图意图){
开关(intent.getAction ()) {
案例BluetoothAdapter.ACTION_DISCOVERY_STARTED:
showLoadingDialog(“正在搜索蓝牙设备,搜索时间大约一分钟”);
打破;
案例BluetoothAdapter.ACTION_DISCOVERY_FINISHED:
Toast.makeText (ConnectA2dpActivity。这个,”搜索蓝牙设备结束”,Toast.LENGTH_SHORT),告诉();
hideLoadingDialog ();
打破;
案例BluetoothDevice.ACTION_FOUND:
BluetoothDevice BluetoothDevice=intent.getParcelableExtra (BluetoothDevice.EXTRA_DEVICE);
deviceAdapter.addDevice (bluetoothDevice);
deviceAdapter.notifyDataSetChanged ();
打破;
案例BluetoothDevice.ACTION_BOND_STATE_CHANGED:=intent.getIntExtra (BluetoothDevice int状态。EXTRA_BOND_STATE BluetoothDevice.BOND_NONE);
如果(状态==BluetoothDevice.BOND_BONDED) {
Toast.makeText (ConnectA2dpActivity。这个,”已连接”,Toast.LENGTH_SHORT),告诉();
}else if(状态==BluetoothDevice.BOND_NONE) {
Toast.makeText (ConnectA2dpActivity。这个,”未连接”,Toast.LENGTH_SHORT),告诉();
}
hideLoadingDialog ();
打破;
}
}
};
私人BluetoothProfile。ServiceListener profileServiceListener=new BluetoothProfile.ServiceListener () {
@Override
公共空间onServiceDisconnected (int) {
如果(profile==BluetoothProfile.A2DP) {
Toast.makeText (ConnectA2dpActivity。“onServiceDisconnected”, Toast.LENGTH_SHORT),告诉();
bluetoothA2dp=零;
}
}
@Override
公共空间onServiceConnected (int,最终BluetoothProfile代理){
如果(profile==BluetoothProfile.A2DP) {
Toast.makeText (ConnectA2dpActivity。“onServiceConnected”, Toast.LENGTH_SHORT),告诉();
bluetoothA2dp=(bluetoothA2dp)代理;
}
}
};
私人AdapterView。OnItemClickListener itemClickListener=new AdapterView.OnItemClickListener () {
@Override
公共空间onItemClick (AdapterView<& # 63;比;父,查看视图,int位置,长id) {
BluetoothDevice设备=deviceAdapter.getDevice(位置);
如果(device.getBondState ()==BluetoothDevice.BOND_BONDED) {
Toast.makeText (ConnectA2dpActivity。这个,”已连接该设备”,Toast.LENGTH_SHORT),告诉();
返回;
}
showLoadingDialog(“正在连接”);
connectA2dp(设备);
}
};
@Override
保护无效onCreate(包savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView (R.layout.activity_connect_a2dp);
BluetoothManager BluetoothManager=(BluetoothManager) getSystemService (Context.BLUETOOTH_SERVICE);
bluetoothAdapter=bluetoothManager.getAdapter ();
如果(bluetoothAdapter==null | | ! getPackageManager () .hasSystemFeature (PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText (ConnectA2dpActivity。这个,”当前设备不支持蓝牙”,Toast.LENGTH_SHORT),告诉();
完成();
}
bluetoothAdapter。getProfileProxy (profileServiceListener, BluetoothProfile.A2DP);
initView ();
registerDiscoveryReceiver ();
registerA2dpReceiver ();
startScan ();
}
@Override
保护无效onDestroy () {
super.onDestroy ();
handler.removeCallbacksAndMessages(空);
unregisterReceiver (a2dpReceiver);
unregisterReceiver (discoveryReceiver);
如果(bluetoothAdapter.isDiscovering ()) {
bluetoothAdapter.cancelDiscovery ();
}
}
私人空间initView () {
ListView lv_deviceList=(视图)findViewById (R.id.lv_deviceList);
deviceAdapter=new deviceAdapter(这个);
lv_deviceList.setAdapter (deviceAdapter);
lv_deviceList.setOnItemClickListener (itemClickListener);
}
私人空间registerDiscoveryReceiver () {
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