Android7.0 应用连接蓝牙音箱（亲测可用）

Android7.0 应用连接蓝牙音箱（亲测可用）

前言

之前操作android蓝牙，都是直接进行数据流通讯，配对成功后接收方监听socket，发送方连接即可。
最近需要连接蓝牙音箱，和系统比较发现，蓝牙音箱存在已连接的状态，而部分android手机之间是不存在连接状态的。
因此将亲测代码贴出，本人萌新，欢迎探讨。

文章中用到的IBluetoothA2dp可在该路径下下载：
https://download.csdn.net/download/csdn_xiaozhe/10618842
至于aidl的使用方式，将在下一篇中记录。

正文

直接贴代码（蓝牙开启，搜索，配对过程省略）

 private IBluetoothA2dp iBluetoothA2dp = null;
 private BluetoothDevice mRemoteBluetoothDevice = null;
 
 @Override
 public void onCreate() {
 //蓝牙开启，搜索，配对过程已省略，默认已经配对成功
	 if (mRemoteBluetoothDevice != null && mRemoteBluetoothDevice.getBondState()== BluetoothDevice.BONDED) {
	             bindA2dpService();
            while(true) {
                if (processMili < 30000) { //等待服务绑定超时时间
                    if (iBluetoothA2dp != null) {
                        try {
                            iBluetoothA2dp.connect(mRemoteBluetoothDevice);
                        } catch (Exception     e) {
                            e.printStackTrace();
                        }
                        break;
                    } else {
                        processMili = System.currentTimeMillis() - startMili;
                        try {
                            Thread.sleep(500);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                } else {
                Log.e("Altman","超时，此次连接失败");
                break;
                }
            }
	 }
 }
 
private void bindA2dpService(){
	Intent intent = getExplicitIntent(this,new Intent(IBluetoothA2dp.class.getName()));
	boolean success = this.bindService(intent , mServiceConnection, Context.BIND_AUTO_CREATE);
	if (success) {
		Log.e("Altman","只能证明，bindService执行成功，结果在回调函数中");
	} else {
		Log.e("Altman","只能证明，bindService执行失败");
	}
}
    
public ServiceConnection mServiceConnection= new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            try {
                iBluetoothA2dp = IBluetoothA2dp.Stub.asInterface(service);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            Log.e("Altman","获取服务失败");
        }
    };

    public Intent getExplicitIntent(Context context, Intent implicitIntent) {
        PackageManager pm = context.getPackageManager();
        List<ResolveInfo> resolveInfo = pm.queryIntentServices(implicitIntent, 0);
        if (resolveInfo == null || resolveInfo.size() != 1) {
            return null;
        }
        ResolveInfo serviceInfo = resolveInfo.get(0);
        String packageName = serviceInfo.serviceInfo.packageName;
        String className = serviceInfo.serviceInfo.name;
        ComponentName component = new ComponentName(packageName, className);
        Intent explicitIntent = new Intent(implicitIntent);
        explicitIntent.setComponent(component);
        return explicitIntent;
    }