Android监听U盘插拔广播,并获取路径和卷标名称

• 第一步现在xml下静态注册广播接收器

• 第二步使用下边的接收器获取

   public class USBReceiver extends BroadcastReceiver {
        private static final String TAG = USBReceiver.class.getSimpleName();
        private static final String MOUNTS_FILE = "/proc/mounts";
        private StorageManager mStorageManager;
    
        @Override
        public void onReceive(Context context, Intent intent) {
            mStorageManager = (StorageManager) context.getSystemService(Activity.STORAGE_SERVICE);
            String action = intent.getAction();
            if (action.equals(Intent.ACTION_MEDIA_MOUNTED)) {
                String mountPath = intent.getData().getPath();
                Uri data = intent.getData();
                Log.d(TAG, "mountPath = " + mountPath);
                if (!TextUtils.isEmpty(mountPath)) {
                    //读取到U盘路径再做其他业务逻辑
                    SPUtils.getInstance().put("UsbPath", mountPath);
                    boolean mounted = isMounted(mountPath);
                    Log.d(TAG, "onReceive: " + "U盘挂载" + mounted);
                    getUName();
                }
            } else if (action.equals(Intent.ACTION_MEDIA_UNMOUNTED) || action.equals(Intent.ACTION_MEDIA_EJECT)) {
                Log.d(TAG, "onReceive: " + "U盘移除了");
            } else if (action.equals("android.intent.action.BOOT_COMPLETED")) {
                //如果是开机完成，则需要调用另外的方法获取U盘的路径
            }
        }
    
    
        /**
         * 判断是否有U盘插入,当U盘开机之前插入使用该方法.
         * @param path
         * @return
         */
        public static boolean isMounted(String path) {
            boolean blnRet = false;
            String strLine = null;
            BufferedReader reader = null;
            try {
                reader = new BufferedReader(new FileReader(MOUNTS_FILE));
    
                while ((strLine = reader.readLine()) != null) {
                    if (strLine.contains(path)) {
                        blnRet = true;
                        break;
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    reader = null;
                }
            }
            return blnRet;
        }
    
    
        /**
         * 获取U盘的路径和名称
         */
        private void getUName() {
            Class volumeInfoClazz = null;
            Method getDescriptionComparator = null;
            Method getBestVolumeDescription = null;
            Method getVolumes = null;
            Method isMountedReadable = null;
            Method getType = null;
            Method getPath = null;
            List volumes = null;
            try {
                volumeInfoClazz = Class.forName("android.os.storage.VolumeInfo");
                getDescriptionComparator = volumeInfoClazz.getMethod("getDescriptionComparator");
                getBestVolumeDescription = StorageManager.class.getMethod("getBestVolumeDescription", volumeInfoClazz);
                getVolumes = StorageManager.class.getMethod("getVolumes");
                isMountedReadable = volumeInfoClazz.getMethod("isMountedReadable");
                getType = volumeInfoClazz.getMethod("getType");
                getPath = volumeInfoClazz.getMethod("getPath");
                volumes = (List) getVolumes.invoke(mStorageManager);
    
                for (Object vol : volumes) {
                    if (vol != null && (boolean) isMountedReadable.invoke(vol) && (int) getType.invoke(vol) == 0) {
                        File path2 = (File) getPath.invoke(vol);
                        String p1 = (String) getBestVolumeDescription.invoke(mStorageManager, vol);
                        String p2 = path2.getPath();
                        Log.d(TAG, "-----------path1-----------------" + p1);               //打印U盘卷标名称
                        Log.d(TAG, "-----------path2 @@@@@-----------------" + p2);         //打印U盘路径
                    }
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }