USBTool

package uni.dcloud.io.uniplugin_richalert;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.os.Build;
import android.util.Log;
import android.widget.Toast;

import java.util.HashMap;

public class USBTool {

    private static final String TAG = USBTool.class.getSimpleName();
//    private static final String ACTION_USB_PERMISSION = "com.github.mjdev.libaums.USB_PERMISSION";
    private int currentDevice = -1;
    private Activity activity;

    private USBTool() {
    }

    private static USBTool instance;

    public static USBTool getInstance() {
        if (instance == null) {
            instance = new USBTool();
        }
        return instance;
    }

    //获取USB设备ACTION
    private static final String ACTION_USB_PERMISSION = "com.android.usb.USB_PERMISSION";

    //开始申请USB权限
    private void getUsbPermission(UsbDevice mUSBDevice, UsbManager mUsbManager) {
        PendingIntent pendingIntent = PendingIntent.getBroadcast(activity, 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);
        activity.registerReceiver(usbReceiver, filter);
        mUsbManager.requestPermission(mUSBDevice, pendingIntent); // 该代码执行后，系统弹出一个对话框/等待权限
    }


    /**
     * Searches for connected mass storage devices, and initializes them if it
     * could find some.
     */
    public String discoverDevice(Activity activity) {
        this.activity = activity;
        // 获取USB设备列表及定位到要申请权限的USB设备
        UsbManager mUsbManager = (UsbManager) activity.getSystemService(Context.USB_SERVICE);
        HashMap<String, UsbDevice> devices = mUsbManager.getDeviceList();
        UsbDevice usbDevice = null;
        for (UsbDevice device : devices.values()) {
            if(device != null){
                usbDevice = device;
            }
        }
        String mInfo = "";
//        UsbDevice usbDevice = (UsbDevice) activity.getIntent().getParcelableExtra(UsbManager.EXTRA_DEVICE);

        if(usbDevice != null) {
            getUsbPermission(usbDevice, mUsbManager);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                mInfo =
                        "DeviceID: " + usbDevice.getDeviceId() + "\n" +
                                "DeviceName: " + usbDevice.getDeviceName() + "\n" +
                                "DeviceClass: " + usbDevice.getDeviceClass() + " - " +
                                "DeviceSubClass: " + usbDevice.getDeviceSubclass() + "\n" +
                                "SerialNumber: " + usbDevice.getSerialNumber() + "\n" +
                                "VendorID: " + usbDevice.getVendorId() + "\n" +
                                "ProductID: " + usbDevice.getProductId() + "\n";
            }
        }
        return mInfo;
    }


    public void register(Context context) {
        IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
        filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
        filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
        context.registerReceiver(usbReceiver, filter);

    }


    public void unregisterReceiver() {
        activity.unregisterReceiver(usbReceiver);
    }


    private final BroadcastReceiver usbReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {

            String action = intent.getAction();
            if (ACTION_USB_PERMISSION.equals(action)) {

                UsbDevice usbDevice = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
                if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
                    if (usbDevice != null) {
                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                            String mInfo = "DeviceID: " + usbDevice.getDeviceId() + "\n" +
                                    "DeviceName: " + usbDevice.getDeviceName() + "\n" +
                                    "DeviceClass: " + usbDevice.getDeviceClass() + " - " +
                                    "DeviceSubClass: " + usbDevice.getDeviceSubclass() + "\n" +
                                    "SerialNumber: " + usbDevice.getSerialNumber() + "\n" +
                                    "VendorID: " + usbDevice.getVendorId() + "\n" +
                                    "ProductID: " + usbDevice.getProductId() + "\n";
                            Log.d(TAG, "USB device mInfo=="+mInfo);
                        }
                    }
                } else {
                    showToast("未获取到U盘权限");
                }

            } else if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) {
                UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
                showToast("onReceive: USB设备已连接");
                Log.d(TAG, "USB device attached");

                // determine if connected device is a mass storage devuce
                if (device != null) {
                    discoverDevice(activity);
                }
            } else if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
                UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
                showToast("onReceive: USB设备已拔出");
                Log.d(TAG, "USB device detached");

                // determine if connected device is a mass storage devuce
                if (device != null) {
                    if (currentDevice != -1) {
                    }
                    // check if there are other devices or set action bar title
                    // to no device if not
                    discoverDevice(activity);
                }
            }

        }
    };

    public void showToast(String s) {
        Toast.makeText(activity, s, Toast.LENGTH_SHORT).show();
    }

    public void setUsBlistener(USBlistener usBlistener) {
        this.usBlistener = usBlistener;
    }

    private USBlistener usBlistener = null;

    public void getDeviceInfo() {


    }


    public interface USBlistener {
        void hasPermissionUSB();

        void attachedUSB();

        void detachedUSB();
    }


    public void requestPermission(UsbDevice usbDevice) {
    }
}