Android授权USB使用权限示例

使用效果：

授权实现过程：

1.在AndroidManifest.xml中增加android.hardware.usb.action.USB_DEVICE_ATTACHED的action及meta-data

action: 

 <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"/>

meta-data: 

<meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" android:resource="@xml/device_filter"/>

2.增加USB设备过滤

3.获取USB管理服务：

UsbManager mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE);

 4.获取USB设备列表:

HashMap<String, UsbDevice> deviceList = mUsbManager.getDeviceList();

5.遍历USB设备列表:

for (UsbDevice dev: deviceList.values()){
            String usbInfo = "DeviceID: "+dev.getDeviceId()+"\n"+
                    "VendorId: "+dev.getVendorId()+"\n"+
                    "ProductId: "+dev.getProductId()+"\n"+
                    "Manufacturer: "+dev.getManufacturerName()+"\n"+
                    "Product: "+dev.getProductName()+"\n"+
                    "Version: "+dev.getVersion()+"\n";
            tv.setText(usbInfo);
            System.out.println("==========================");
            System.out.println(usbInfo);
            System.out.println("==========================");
}

6.注册USB授权广播:

            //设备授权配置
            //Android14 API34 及或更高使用 FLAG_IMMUTABLE
            //Android14 API33 及或更低使用 FLAG_MUTABLE
            PendingIntent mPermissionIntent = PendingIntent.getBroadcast(this, 0,
                    new Intent(ACTION_USB_PERMISSION),
                    Build.VERSION.SDK_INT>=34? PendingIntent.FLAG_IMMUTABLE:PendingIntent.FLAG_MUTABLE);
            IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
            if (Build.VERSION.SDK_INT>=33){
                registerReceiver(mUsbReceiver, filter,Context.RECEIVER_EXPORTED);
            }else{
                registerReceiver(mUsbReceiver, filter);
            }

7.实现广播接收器

private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";
    private final String TAG = "usb_auth_demo";
    private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (ACTION_USB_PERMISSION.equals(action)){
                synchronized (this) {
                    UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)){
                        if(device != null){
                            Log.i(TAG,"设备授权成功");
                            Toast.makeText(context,"设备授权成功",Toast.LENGTH_LONG).show();
                        }
                    }else{
                        Log.d(TAG, "设备拒绝授权: " + device);
                    }
                }
            }
        }
    };

2.请求USB设备权限：

mUsbManager.requestPermission(dev, mPermissionIntent);

完整示例源码: 

https://github.com/tonyimax/usb_auth_demo.git