获取内置/外置sd卡路径

本文主要是介绍获取内置/外置sd卡路径，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

获取内置/外置sd卡路径
Software #112152

获取内外置T卡位置：StorageManager.java类
http://192.168.3.77:8989/wcp/webdoc/view/Pub402880cd5c5da6e7015dab1bb5b40ed2.html 达哥的WCP+廖文星的bug 112152
可参考http://blog.csdn.net/rgen_xiao/article/details/55506025
没有外置T卡
01-04 20:19:12.956 3408-3408/com.example.sharedpreferencestest D/ContentValues:
onCreate: getStoragePath(this,true)==null

内置T卡位置
01-04 20:19:12.959 3408-3408/com.example.sharedpreferencestest D/ContentValues:
onCreate: getStoragePath(this,false)==/storage/emulated/0

有外置T卡
01-04 20:21:05.160 4018-4018/com.example.sharedpreferencestest D/ContentValues:
onCreate: getStoragePath(this,true)==/storage/B403-1BF6

内置T卡位置
01-04 20:21:05.164 4018-4018/com.example.sharedpreferencestest D/ContentValues:
onCreate: getStoragePath(this,false)==/storage/emulated/0

scard0：指系统内部存储
scard1：指外插的sd卡

方法一：
   //is_removable false获取内置sd路径 true获取外置sd路径
   private String getStoragePath(Context mContext,boolean is_removable){
       StorageManager mStorageManager = (StorageManager)mContext.getSystemService(Context.STORAGE_SERVICE);
       Class<?> storageVolumeClazz = null;
       try {
           storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");//获取StorageVolume类
           Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");//通过反射获取StorageManager中方法
           Method getPath = storageVolumeClazz.getMethod("getPath");//通过反射获取StorageVolume中方法
           Method isRemovable = storageVolumeClazz.getMethod("isRemovable");//通过反射获取StorageVolume中方法
           Object result = getVolumeList.invoke(mStorageManager);//通过Method的invoke方法获取当前存在的可以获取到的存储列表
           final int length = Array.getLength(result);//存储列表的数目
           //String pathappend="";
           //下面的for循环会得到当前所有的存储路径：包括内置、外置、otg，但是我们平时的otg不常用，在客户有需求时候，可以稍作修改
           for(int i=0;i<length;i++){
               Object storageVolumeElement = Array.get(result,i);//获取存储元素
               String path = (String)getPath.invoke(storageVolumeElement);//通过存储元素获取对应路径
               boolean removable = (Boolean)isRemovable.invoke(storageVolumeElement);//通过存储元素获取是否支持可拆卸
               if(is_removable == removable){
                   return path;
               }
               //pathappend=pathappend+",,,"+path;
           }
           return null;
           //对N平台的获取到的元素顺序是：内置,,,外置,,,otg：,,,/storage/emulated/0,,,/storage/70FF-15E5,,,/storage/7AB3-AE0B
           //return pathappend；
       } catch (ClassNotFoundException e) {
           e.printStackTrace();
       } catch (InvocationTargetException e) {
           e.printStackTrace();
       } catch (NoSuchMethodException e) {
           e.printStackTrace();
       } catch (IllegalAccessException e) {
           e.printStackTrace();
       }

       return null;
   }

方法一缩略写法：
   public void getPrimaryStoragePath() {
       try {
           StorageManager sm = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
           Method getVolumePathsMethod = StorageManager.class.getMethod("getVolumePaths", null);
           String[] paths = (String[]) getVolumePathsMethod.invoke(sm, null);
           // first element in paths[] is primary storage path
           Log.d(TAG, "getPrimaryStoragePath: getStoragePath(this,true)=="+paths[0]);//内置sd路径
           Log.d(TAG, "getPrimaryStoragePath: getStoragePath(this,true)=="+paths[1]);//外置sd路径
       } catch (Exception e) {
           Log.e(TAG, "getPrimaryStoragePath() failed", e);
       }
   }

廖文星：（此方法可在源码里写，在apk里写sm.getVolumePaths()出错！）
   public void getPrimaryStoragePath() {
       //Redmine#112152 liaowenxing modified for changing record path 2017.12.27,begin
       StorageManager sm = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);
       String[] paths = sm.getVolumePaths();
       if (paths.length > 1)
           sampleDir = new File(paths[1]);
       sampleDir = new File(sampleDir.getAbsolutePath() + "/Recorder/Call Recorder");
       //Redmine#112152 liaowenxing modified for changing record path 2017.12.27,end
   }