今天遇到个问题，需要对蓝牙状态进行监听。这个功能之前做过，一直没有总结记录过，今天又遇到了，就记录一下蓝牙状态的监听过程。
首先写一个广播接收器，主要实现蓝牙状态变化的广播接收。
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class BluetoothStateBroadcastReceive extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
switch (action){
case BluetoothDevice.ACTION_ACL_CONNECTED:
Toast.makeText(context , "蓝牙设备:" + device.getName() + "已链接", Toast.LENGTH_SHORT).show();
break;
case BluetoothDevice.ACTION_ACL_DISCONNECTED:
Toast.makeText(context , "蓝牙设备:" + device.getName() + "已断开", Toast.LENGTH_SHORT).show();
break;
case BluetoothAdapter.ACTION_STATE_CHANGED:
int blueState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 0);
switch (blueState){
case BluetoothAdapter.STATE_OFF:
Toast.makeText(context , "蓝牙已关闭", Toast.LENGTH_SHORT).show();
break;
case BluetoothAdapter.STATE_ON:
Toast.makeText(context , "蓝牙已开启" , Toast.LENGTH_SHORT).show();
break;
}
break;
}
}
}然后注册上面这个广播接收器，这里就要根据具体需要可选择静态注册或动态注册了。
静态注册方法
动态注册方法
首先定义一个接收器对象
private BluetoothStateBroadcastReceive mReceive;然后写注册方法
private void registerBluetoothReceiver(){
if(mReceive == null){
mReceive = new BluetoothStateBroadcastReceive();
}
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
intentFilter.addAction("android.bluetooth.BluetoothAdapter.STATE_OFF");
intentFilter.addAction("android.bluetooth.BluetoothAdapter.STATE_ON");
registerReceiver(mReceive, intentFilter);
}再不需要的时候记得要注销，注销方法
private void unregisterBluetoothReceiver(){
if(mReceive != null){
unregisterReceiver(mReceive);
mReceive = null;
}
}