Android 获取 usb 权限的两种方法

一、直接在AndroidManifest.xml文件中的acitivity加入以下配置：

二、动态代码获取

private static final String ACTION_USB_PERMISSION = “com.android.usb.USB_PERMISSION”;

///申请权限

PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ACTION_USB_PERMISSION), 0);

IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);

filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);

filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);

///注册广播

mContext.registerReceiver(mUsbReceiver, filter);

///获取权限

mUsbManager.requestPermission(mUSBDevice, pendingIntent); // 该代码执行后，系统弹出一个对话框/等待权限

///广播

private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {

@SuppressLint(“NewApi”)

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (ACTION_USB_PERMISSION.equals(action)) {

synchronized (this) {

mContext.unregisterReceiver(mUsbReceiver);

UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);

if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)

&& currentDevice.equals(device)) {

//TODO 授权成功，操作USB设备

}else{

//用户点击拒绝了

}

}

}

}

};