Android 7.0以上和7.0以下获取USB，sdcard路径的方法

1 7.0以上路径获取方法

   public static List getAllExternalSdcardPath(Context context) {        List uDisks = new ArrayList<>();        String systemPath = Environment.getExternalStorageDirectory().getAbsolutePath();        StorageManager mStorageManager;        mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);        //获取所有挂载的设备（内部sd卡、外部sd卡、挂载的U盘）        if (mStorageManager != null) {            List<StorageVolume> volumes = mStorageManager.getStorageVolumes();            Log.e("MainActivity", "size:" + volumes.size());            if (volumes.size() > 0) {                try {                    Class storageVolumeClazz = Class                            .forName("android.os.storage.StorageVolume");                    //通过反射调用系统hide的方法                    Method getPath = storageVolumeClazz.getMethod("getPath");                    Method isRemovable = storageVolumeClazz.getMethod("isRemovable");                    for (int i = 0; i < volumes.size(); i++) {                        StorageVolume storageVolume = volumes.get(i);//获取每个挂载的StorageVolume                        //通过反射调用getPath、isRemovable                        String storagePath = (String) getPath.invoke(storageVolume);//获取路径                        if (!storagePath.equalsIgnoreCase(systemPath)) {                            uDisks.add(storagePath);                        }                        boolean isRemovableResult = (boolean) isRemovable.invoke(storageVolume);//是否可移除                        String description = storageVolume.getDescription(context);                        Log.e("MainActivity", " i=" + i + " ,storagePath=" + storagePath                                + " ,isRemovableResult=" + isRemovableResult + " ,description=" + description);                    }                } catch (Exception e) {                    e.printStackTrace();                }            }        }        return uDisks;    }

2 7.0以下获取路径的方法

public static List getUSBPaths(Context context) {//反射获取路径        String[] paths = null;        List<String> data = new ArrayList<>();// include sd and usb devices        StorageManager storageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);        try {            paths = (String[]) StorageManager.class.getMethod("getVolumePaths", null).invoke(storageManager, null);            for (String path : paths) {                String state = (String) StorageManager.class.getMethod("getVolumeState", String.class).invoke(storageManager, path);                if (state.equals(Environment.MEDIA_MOUNTED) && !path.contains("emulated")) {                    Log.e("MainActivity", "路径---------->" + path);                    data.add(path);                }            }        } catch (Exception e) {            e.printStackTrace();        }        return data;    }

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