遇见到坑爹的队友只有接受现实并且解决问题~
首先介绍一下网上几乎所有的能搜到的方法:
1.首先,要操作蓝牙,先要在AndroidManifest.xml里加入权限
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<uses-permissionandroid:name= "android.permission.BLUETOOTH_ADMIN" />
<uses-permissionandroid:name= "android.permission.BLUETOOTH" />
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2.在android.bluetooth包下就这些能用的东西:
3.我们一般用的是BluetoothAdapter基本就可以实现需求了:
cancelDiscovery() :取消发现,也就是说当我们正在搜索设备的时候调用这个方法将不再继续搜索
disable():关闭蓝牙
enable():打开蓝牙,这个方法打开蓝牙不会弹出提示,更多的时候我们需要问下用户是否打开,一下这两行代码同样是打开蓝牙,不过会提示用户:
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//打开蓝牙 if (!mBluetoothAdapter.isEnabled()) {
Intent intent1 = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent1, ENABLE_BLUE);
//不做提示,强行打开
// mAdapter.enable();
} else {
close_blue();
} |
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@Override protected void onActivityResult( int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super .onActivityResult(requestCode, resultCode, data);
if (requestCode == ENABLE_BLUE) {
if (resultCode == RESULT_OK) {
Toast.makeText( this , "蓝牙开启成功" , Toast.LENGTH_SHORT).show();
open_blue();
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText( this , "蓝牙开始失败" , Toast.LENGTH_SHORT).show();
close_blue();
}
}
} |
getAddress():获取本地蓝牙地址
getDefaultAdapter():获取默认BluetoothAdapter,实际上,也只有这一种方法获取BluetoothAdapter
getName():获取本地蓝牙名称
getRemoteDevice(String address):根据蓝牙地址获取远程蓝牙设备
getState():获取本地蓝牙适配器当前状态(感觉可能调试的时候更需要)
isDiscovering():判断当前是否正在查找设备,是返回true
isEnabled():判断蓝牙是否打开,已打开返回true,否则,返回false
listenUsingRfcommWithServiceRecord(String name,UUID uuid):根据名称,UUID创建并返回BluetoothServerSocket,这是创建BluetoothSocket服务器端的第一步
startDiscovery():开始搜索,这是搜索的第一步
4.使设备能够被搜索:
首先判断初始状态:
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//本机设备被扫描初始状态bufen if (mBluetoothAdapter.getScanMode() == 23 ) {
//开启状态设置bufen
//开启操作
//弹窗
// Intent intent = new Intent( // BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); // //设置蓝牙可见性的时间,方法本身规定最多可见300秒 // intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, BLUE_TIME); // startActivityForResult(intent, SEARCH_BLUE); //不弹窗
SettingblueUtils.setDiscoverableTimeout( 120 );
shezhi_blue_research( true );
new Handler().postDelayed( new Runnable() {
@Override
public void run() {
closeDiscoverableTimeout();
shezhi_blue_research( false );
}
}, 120 * 1000 );
} else if (mBluetoothAdapter.getScanMode() == 21 ) {
//关闭状态设置bufen
closeDiscoverableTimeout();
} |
然后设置代码部分:
开启:
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public static void setDiscoverableTimeout( int timeout) {
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
try {
Method setDiscoverableTimeout = BluetoothAdapter. class .getMethod( "setDiscoverableTimeout" , int . class );
setDiscoverableTimeout.setAccessible( true );
Method setScanMode = BluetoothAdapter. class .getMethod( "setScanMode" , int . class , int . class );
setScanMode.setAccessible( true );
setDiscoverableTimeout.invoke(adapter, timeout);
setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE, timeout);
} catch (Exception e) {
e.printStackTrace();
}
} |
关闭:
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public static void closeDiscoverableTimeout() {
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
try {
Method setDiscoverableTimeout = BluetoothAdapter. class .getMethod( "setDiscoverableTimeout" , int . class );
setDiscoverableTimeout.setAccessible( true );
Method setScanMode = BluetoothAdapter. class .getMethod( "setScanMode" , int . class , int . class );
setScanMode.setAccessible( true );
setDiscoverableTimeout.invoke(adapter, 1 );
setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE, 1 );
} catch (Exception e) {
e.printStackTrace();
}
} |
5.抓取蓝牙列表List的方法:
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// 获取所有已经绑定的蓝牙设备 Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices(); List<BluetoothDevice> mList1 = new ArrayList<>();
if (devices.size() > 0 ) {
mList1 = new ArrayList<>(devices);
} |
6.注册搜索蓝牙receiver:
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IntentFilter mFilter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
mFilter.addAction(BluetoothDevice.ACTION_FOUND); mFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); mFilter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED); mFilter.addAction(BluetoothA2dp.ACTION_PLAYING_STATE_CHANGED); registerReceiver(mReceiver, mFilter); |
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private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
// 获得已经搜索到的蓝牙设备
if (action.equals(BluetoothDevice.ACTION_FOUND)) {
BluetoothDevice device11 = intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// 搜索到的不是已经绑定的蓝牙设备
if (!is_shebei_open) {
receiver1(device11);
} else {
receiver11(device11);
}
/**当绑定的状态改变时*/
} else if (action.equals(BluetoothDevice.ACTION_BOND_STATE_CHANGED)) {
BluetoothDevice device22 = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
receiver2(device22, MainActivity_BlueTooth. this );
} else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
receiver3();
} else if (action.equals(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED)) {
int state = intent.getIntExtra(BluetoothA2dp.EXTRA_STATE, BluetoothA2dp.STATE_DISCONNECTED);
receiver4(state);
} else if (action.equals(BluetoothA2dp.ACTION_PLAYING_STATE_CHANGED)) {
int state = intent.getIntExtra(BluetoothA2dp.EXTRA_STATE, BluetoothA2dp.STATE_NOT_PLAYING);
receiver5(state);
}
}
}; |
最后说一下,多连接目前还没有解决,个人试了很多方法,大家如果有方法告诉我,谢谢~