Android内置和外置SD卡的位置获取

public class StorageUtils {
    private static String TAG="123";

    // 获取主存储卡路径 内置内存卡路径
    public static String getPrimaryStoragePath(Context context) {
        try {

            StorageManager sm = (StorageManager) context.getSystemService(context.STORAGE_SERVICE);
            Method getVolumePathsMethod = StorageManager.class.getMethod("getVolumePaths");
            String[] paths = (String[]) getVolumePathsMethod.invoke(sm);
            // first element in paths[] is primary storage path
            return paths[0];
        } catch (Exception e) {
            Log.e(TAG, "getPrimaryStoragePath() failed", e);
        }
        return null;
    }

    //获取可用的所有外置内存卡路径
    public static List<String> getSecondaryStoragePath(Context context) {
        try {
            List<String> sdPaths=new ArrayList<>();
            StorageManager sm = (StorageManager) context.getSystemService(context.STORAGE_SERVICE);
            Method getVolumePathsMethod = StorageManager.class.getMethod("getVolumePaths");
            String[] paths = (String[]) getVolumePathsMethod.invoke(sm);//获取所有sd卡路径
            if(paths.length>=1){
                for (int i = 1; i <paths.length ; i++) {
                    if(getStorageState(context,paths[i])){
                        sdPaths.add(paths[i]);
                    }
                }
            }

            return sdPaths;
        } catch (Exception e) {
            Log.e(TAG, "getSecondaryStoragePath() failed", e);
        }
        return null;
    }

    // 判断存储卡的路径是否可用
    public static boolean getStorageState(Context context,String path) {
        try {
            StorageManager sm = (StorageManager) context.getSystemService(context.STORAGE_SERVICE);
            Method getVolumeStateMethod = StorageManager.class.getMethod("getVolumeState", new Class[] {String.class});
            String state = (String) getVolumeStateMethod.invoke(sm, path);
            if(state.equals(Environment.MEDIA_MOUNTED_READ_ONLY)||state.equals(Environment.MEDIA_MOUNTED)){
                return true;
            }
            return false;
        } catch (Exception e) {
            Log.e(TAG, "getStorageState() failed", e);
            return false;
        }
    }

}