How to request USB Permission ?

[kangear]

old method:

    /**
     * 获取Usb权限
     * @param context
     * @param usbManager
     */
    private void tryGetUsbPermission(Context context, UsbManager usbManager, UsbDevice device, UsbInterface intf){
        Log.i(LOG_TAG, "Printer#tryGetUsbPermission");
        IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
//        context.registerReceiver(mUsbPermissionActionReceiver, filter);

        PendingIntent mPermissionIntent = PendingIntent.getBroadcast(context, 0, new Intent(ACTION_USB_PERMISSION), 0);

        if(usbManager.hasPermission(device)){
            //if has already got permission, just goto connect it
            //that means: user has choose yes for your previously popup window asking for grant perssion for this usb device
            //and also choose option: not ask again
            afterGetUsbPermission(context, usbManager, device, intf);
        }else{
            //this line will let android popup window, ask user whether to allow this app to have permission to operate this usb device
            usbManager.requestPermission(device, mPermissionIntent);
        }
    }