Android通过广播接收器BroadcastReceiver监听蓝牙连接变化

上一篇介绍了通过广播对蓝牙的打开关闭等变化的监听，这一篇将对蓝牙连接状态的变化进行封装。

首先是广播接收器BlueToothConnectReceiver 类

import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;public class BlueToothConnectReceiver extends BroadcastReceiver {private OnBleConnectListener onBleConnectListener;@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);switch (action) {case BluetoothDevice.ACTION_ACL_CONNECTED:if (onBleConnectListener != null) {onBleConnectListener.onConnect(device);}Log.d("BlueToothConnect", "BroadcastReceiver蓝牙已连接：" + device.getName());break;case BluetoothDevice.ACTION_ACL_DISCONNECTED://当直接关闭蓝牙时此处不会被触发，只有当蓝牙未关闭并且断开蓝牙时才会触发if (onBleConnectListener != null) {onBleConnectListener.onDisConnect(device);}Log.d("BlueToothConnect", "BroadcastReceiver蓝牙已断开：" + device.getName());break;}}public interface OnBleConnectListener {void onConnect(BluetoothDevice device);void onDisConnect(BluetoothDevice device);}public void setOnBleConnectListener(OnBleConnectListener onBleConnectListener) {this.onBleConnectListener = onBleConnectListener;}
}

接着是封装注册和取消注册的BlueToothUtils类，依旧使用单例模式

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.IntentFilter;/*** @author wang songbo*/
public class BlueToothUtils {private static BlueToothUtils INSTANCE;private BlueToothStateReceiver blueToothStateReceiver;private BlueToothConnectReceiver blueToothConnectReceiver;public static synchronized BlueToothUtils getInstance() {if (INSTANCE == null) {INSTANCE = new BlueToothUtils();}return INSTANCE;}//注册广播接收器，用于监听蓝牙状态变化public void registerBlueToothStateReceiver(Activity activity) {blueToothStateReceiver = new BlueToothStateReceiver();IntentFilter filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);activity.registerReceiver(blueToothStateReceiver, filter);blueToothStateReceiver.setOnBlueToothStateListener(new BlueToothStateReceiver.OnBlueToothStateListener() {@Overridepublic void onStateOff() {//do something}@Overridepublic void onStateOn() {//do something}@Overridepublic void onStateTurningOn() {//do something}@Overridepublic void onStateTurningOff() {//do something}});}public void unregisterBlueToothStateReceiver(Activity activity) {activity.unregisterReceiver(blueToothStateReceiver);}//注册广播接收器，用于监听蓝牙连接情况的变化public void registerBlueToothConnectReceiver(Activity activity) {blueToothConnectReceiver = new BlueToothConnectReceiver();IntentFilter filter_connect = new IntentFilter(BluetoothDevice.ACTION_ACL_CONNECTED);activity.registerReceiver(blueToothConnectReceiver, filter_connect);IntentFilter filter_disconnect = new IntentFilter(BluetoothDevice.ACTION_ACL_DISCONNECTED);activity.registerReceiver(blueToothConnectReceiver, filter_disconnect);blueToothConnectReceiver.setOnBleConnectListener(new BlueToothConnectReceiver.OnBleConnectListener() {@Overridepublic void onConnect(BluetoothDevice device) {}@Overridepublic void onDisConnect(BluetoothDevice device) {}});}public void unregisterBlueToothConnectReceiver(Activity activity) {activity.unregisterReceiver(blueToothConnectReceiver);}}

在Activity中注册与取消

BlueToothUtils.getInstance().registerBlueToothConnectReceiver(this);//注册广播
BlueToothUtils.getInstance().unregisterBlueToothConnectReceiver(this);//取消注册广播

AndroidManifest.xml中添加权限

    <uses-permission android:name="android.permission.BLUETOOTH" /><uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

蓝牙打开关闭状态变化传送门：

https://blog.csdn.net/u010161303/article/details/88824846

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