android 本地数据库报错unknown error (Sqlite code 14): Could not open database, (OS error - 2:No such file or directory)....的根本原因是用了大于23的SDK构建,两种解决方案 一、用低于23的SDK版本构建 二、动态添加权限 public static final int REQUEST_EXTERNAL_STORAGE = 1; private static String[] PERMISSIONS_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}; /** * 验证读取sd卡的权限 * * @param activity */ public boolean verifyStoragePermissions(Activity activity) { /*******below android 6.0*******/ if (Build.VERSION.SDK_INT < 23) { return true; } int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE); if (permission != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE); return false; } else { return true; } }