Android设备与外接U盘实现数据文件夹拷贝到android设备

项目要求把插入U盘允许权限后，直接把U盘的某个文件夹以及内容同名字拷贝的android 设备中
读取U盘信息用到一个开源框架：https://github.com/magnusja/libaums
引入： compile 'com.github.mjdev:libaums:+'
接着直接上代码：
package com.dianqiu.usbotg;import android.app.PendingIntent;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.pm.ApplicationInfo;import android.content.pm.PackageManager;import android.hardware.usb.UsbDevice;import android.hardware.usb.UsbManager;import android.os.Environment;import android.os.Handler;import android.util.Log;import com.dianqiu.database.MessageEvent;import com.github.mjdev.libaums.UsbMassStorageDevice;import com.github.mjdev.libaums.fs.FileSystem;import com.github.mjdev.libaums.fs.UsbFile;import com.github.mjdev.libaums.fs.UsbFileInputStream;import com.github.mjdev.libaums.partition.Partition;import org.greenrobot.eventbus.EventBus;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.lang.reflect.Method;import java.lang.reflect.Type;import utils.MyDataType;/** * Created by Administrator on 2018/4/9. */public class UsbOtgMananger {      public  static Handler mHandler=null;    private static UsbOtgMananger minstance;    private  Context mContext;    private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";    private UsbMassStorageDevice[] storageDevices;    private UsbFile cFolder;    public UsbOtgMananger() {    }    public  synchronized static UsbOtgMananger getInstance(){        if(minstance==null){            minstance=new UsbOtgMananger();        }        return minstance;    }      public void setmHandler(Handler handler){       this.mHandler=handler;      }      public  void  setConctext(Context context){        this.mContext=context;      }    public void registerUDiskReceiver() {        //监听otg插入 拔出        IntentFilter usbDeviceStateFilter = new IntentFilter();        usbDeviceStateFilter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);        usbDeviceStateFilter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);        //注册监听自定义广播        usbDeviceStateFilter.addAction(ACTION_USB_PERMISSION);        mContext.registerReceiver(mOtgReceiver, usbDeviceStateFilter);        //注册监听自定义广播    }    public  void  unRegisterUDiskReceiver(){        mContext.unregisterReceiver(mOtgReceiver);    }    private BroadcastReceiver mOtgReceiver = new BroadcastReceiver() {        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            switch (action) {                case ACTION_USB_PERMISSION://接受到自定义广播                    UsbDevice usbDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);                    //允许权限申请                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {                        if (usbDevice != null) {                            //用户已授权，可以进行读取操作                            readDevice(getUsbMass(usbDevice));                        } else {                            //    showToastMsg("没有插入U盘");                        }                    } else {                        // showToastMsg("未获取到U盘权限");                    }                    break;                case UsbManager.ACTION_USB_DEVICE_ATTACHED://接收到U盘设备插入广播                    UsbDevice device_add = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);                    if (device_add != null) {                        //接收到U盘插入广播，尝试读取U盘设备数据                        redUDiskDevsList();                    }                    break;                case UsbManager.ACTION_USB_DEVICE_DETACHED://接收到U盘设设备拔出广播                    Log.i("songkunjian","ACTION===拉出U盘");                    //  showToastMsg("U盘已拔出");                    break;            }        }    };    /**     * @description U盘设备读取     * @author ldm     * @time 2017/9/1 17:20     */    private void redUDiskDevsList() {        //设备管理器        UsbManager usbManager = (UsbManager) mContext.getSystemService(Context.USB_SERVICE);        //获取U盘存储设备        storageDevices = UsbMassStorageDevice.getMassStorageDevices(mContext);        PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ACTION_USB_PERMISSION), 0);        //一般手机只有1个OTG插口        for (UsbMassStorageDevice device : storageDevices) {            //读取设备是否有权限            if (usbManager.hasPermission(device.getUsbDevice())) {                   readDevice(device);//读取USB信息            } else {                //没有权限，进行申请           //   Log.i("songkunjian","READDEVICE===:"+ grantAutomaticPermission(device.getUsbDevice()));                usbManager.requestPermission(device.getUsbDevice(), pendingIntent);            }        }        if (storageDevices.length == 0) {            //  showToastMsg("请插入可用的U盘");        }    }    private void readDevice(UsbMassStorageDevice device) {        try {            device.init();//初始化            //设备分区            Partition partition = device.getPartitions().get(0);            //文件系统            FileSystem currentFs = partition.getFileSystem();            currentFs.getVolumeLabel();//可以获取到设备的标识            Log.i("songkunjian","读取U盘信息====:"+currentFs.getCapacity()+"  "                    +currentFs.getOccupiedSpace()+" "+currentFs.getFreeSpace()+" " +currentFs.getChunkSize());            Log.i("songkunjian","发送结束界面===:");            EventBus.getDefault().post(new MessageEvent(MyDataType.U_DRIVE));            //通过FileSystem可以获取当前U盘的一些存储信息，包括剩余空间大小，容量等等            cFolder = currentFs.getRootDirectory();//设置当前文件对象为根目录            if (cFolder==null)return;//            // EventBus.getDefault().post(new MessageEvent(MyDataType.COPYSTRAST));            new Thread() {                @Override                public void run() {                    super.run();                    try {                        Thread.sleep(1000);                        CopyFile(cFolder);//开始删除手机某个原来名字的文件夹（自己定义）                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }            }.start();            //        } catch (Exception e) {            e.printStackTrace();        }    }    private void CopyFile(UsbFile usbFile) {        File file=new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/DianQiu");            if (file.exists()){                EventBus.getDefault().post(new MessageEvent(MyDataType.FILEDETEING));//开始删除原文件                deleteFile(file);            }          file.mkdir();       // file.getAbsolutePath();        UsbFile[] usbFiles = new UsbFile[0];        try {            usbFiles = usbFile.listFiles();            for(UsbFile usbfile : usbFiles){                if (usbfile.getName().equals("DianQiu")){                    prossgerzise=0;                   new Thread(new Runnable() {                       @Override                       public void run() {                           try {                               Thread.sleep(1000);                               EventBus.getDefault().post(new MessageEvent(MyDataType.FILEDETEED));//完成删除原文件                           } catch (InterruptedException e) {                               e.printStackTrace();                           }                       }                   }).start();                    EventBus.getDefault().post(new MessageEvent(MyDataType.COPYSTRAST,getUsbFileLength(usbfile)));                    copy(usbfile,  file.getAbsolutePath());                }            }        } catch (IOException e) {            e.printStackTrace();        } catch (Exception e) {            e.printStackTrace();        }    }    //删除源文件    private void deleteFile(File file) {        if (file.isDirectory()) {            File[] files = file.listFiles();            for (int i = 0; i < files.length; i++) {                File f = files[i];                deleteFile(f);            }            file.delete();//如要保留文件夹，只删除文件，请注释这行        } else if (file.exists()) {            // Log.i("songkunjian","文件大小::"+file.length());            file.delete();        }    }    /**     *     * 复制文件     *     * @param fromFile 要复制的文件目录     * @param toFile   要粘贴的文件目录     * @return 是否复制成功     */  private  static int mIdent=0;    public static boolean copy(UsbFile fromFile, String toFile) {        if (fromFile==null)return false;        //要复制的文件目录        UsbFile[]  currentFiles = new UsbFile[0];        //如果存在则获取当前目录下的全部文件 填充数组        try {            currentFiles = fromFile.listFiles();            mIdent=currentFiles.length;        } catch (IOException e) {            e.printStackTrace();        }        //目标目录        File targetDir = new File(toFile);        //创建目录        if (targetDir.exists()) {            targetDir.delete();        }        targetDir.mkdirs();        //遍历要复制该目录下的全部文件        for (int i = 0; i < currentFiles.length; i++) {            if (currentFiles[i].isDirectory())//如果当前项为子目录 进行递归            {                copy(fromFile, toFile + currentFiles[i].getName() + "/");            } else//如果当前项为文件则进行文件拷贝            {                CopySdcardFile( currentFiles[i], toFile + "/"+ currentFiles[i].getName());            }        }        return true;    }    //文件拷贝    //要复制的目录下的所有非子目录(文件夹)文件拷贝    public static boolean CopySdcardFile( UsbFile cFolder, String toFile) {          EventBus.getDefault().post(new MessageEvent(MyDataType.COPYING,cFolder.getLength()));//正在拷贝文件        try {            InputStream inusb=new UsbFileInputStream(cFolder);            OutputStream fosto = new FileOutputStream(toFile);            byte bt[] = new byte[1024*10];            int c;            while ((c = inusb.read(bt))!= -1) {                fosto.write(bt, 0, c);                }              mIdent--;              Log.i(" songkunjian"," 完成拷贝==:"+mIdent);             if (mIdent<=0){                 Log.i(" songkunjian"," 最终完成拷贝==:");                 EventBus.getDefault().post(new MessageEvent(MyDataType.COPYSTOP));             }            fosto.flush();            inusb.close();            fosto.close();            return true;        } catch (Exception ex) {            return false;        }    }    //获取USB文件夹的大小 以便显示拷贝进度条    private long prossgerzise=0;    public  long getUsbFileLength(UsbFile fromFile) {        if (fromFile==null)return 0;        //要复制的文件目录        UsbFile[]   currentFiles = new UsbFile[0];        //如果存在则获取当前目录下的全部文件 填充数组        try {            currentFiles = fromFile.listFiles();        } catch (IOException e) {            e.printStackTrace();        }        //遍历要复制该目录下的全部文件        for (int i = 0; i < currentFiles.length; i++) {            if (currentFiles[i].isDirectory())//如果当前项为子目录 进行递归            {                getUsbFileLength(currentFiles[i]);            } else//如果当前项为文件则进行文件拷贝            {                prossgerzise+=currentFiles[i].getLength();            }        }        return prossgerzise;    }    private UsbMassStorageDevice getUsbMass(UsbDevice usbDevice) {        for (UsbMassStorageDevice device : storageDevices) {            if (usbDevice.equals(device.getUsbDevice())) {                return device;            }        }        return null;    }}
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