展开全部

1.方法一

//内置sd卡路径String sdcardPath = System.getenv("EXTERNAL_STORAGE"); //内置sd卡路径String sdcardPath = Environment.getExternalStorageDirectory().getAbsolutePath();//外置置sd卡路径String extSdcardPath = System.getenv("SECONDARY_STORAGE");

在Enviroment类的源码中获得sd卡路径其实也是通过32313133353236313431303231363533e4b893e5b19e31333365666230 System.getnv() 方法来实现的，如隐藏的方法:

/** {@hide} */public static File getLegacyExternalStorageDirectory() {

return new File(System.getenv(ENV_EXTERNAL_STORAGE));}

注：更详细的内容还是去看Enviroment源码。

另外要注意的是，在API 23版本中 SECONDARY_STORAGE 被移除。

2.方法二

代码如下：

private static String getStoragePath(Context mContext, boolean is_removale) {

StorageManager mStorageManager = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);

Class> storageVolumeClazz = null;

try {

storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");

Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");

Method getPath = storageVolumeClazz.getMethod("getPath");

Method isRemovable = storageVolumeClazz.getMethod("isRemovable");

Object result = getVolumeList.invoke(mStorageManager);

final int length = Array.getLength(result);

for (int i = 0; i < length; i++) {

Object storageVolumeElement = Array.get(result, i);

String path = (String) getPath.invoke(storageVolumeElement);

boolean removable = (Boolean) isRemovable.invoke(storageVolumeElement);

if (is_removale == removable) {

return path;

}

}

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

} catch (NoSuchMethodException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

}

return null;}