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1、数据库导出：

//导出数据库private void backupDatabase() {public static final String DATABASES_PATH = "/data/data/com.zhuang.database/databases";        File srcDir = new File(Constants.DATABASES_PATH);        //一级目录        public static String APPDIR = "离线数据";                      File destDir = new File(FileUtil.getSDCardPath() + Constants.APPDIR + File.separator + "databases");        AppExecutors.getInstance().diskIO().execute(() -> {            boolean isSuccess = FileUtils.copyDir(srcDir, destDir);            AppExecutors.getInstance().mainThread().execute(() -> {                //
   
    成功备份到：%s
                   //
   
    备份失败
                   Toast.makeText(this,isSuccess ? getString(R.string.successfully_backed_up_to, destDir) : getString(R.string.backup_failed),Toast.LENGTH_SHORT).show();                dismissDialog();            });        });    }

2、导入数据库：

private void importDatabase() {        File srcDir = new File(FileUtil.getSDCardPath() + Constants.APPDIR + File.separator + "databases");        if (!srcDir.exists()) {            ToastUtils.showShort(srcDir.toString() + getString(R.string.directory_does_not_exist));            return;        }        File destDir = new File(Constants.DATABASES_PATH);        AppExecutors.getInstance().diskIO().execute(() -> {            boolean isSuccess = FileUtils.copyDir(srcDir, destDir);            AppExecutors.getInstance().mainThread().execute(() -> {                //
   
    成功导入到：%s
                   //
   
    导入失败
                   Toast.makeText(this,isSuccess ? getString(R.string.successfully_imported_to2, destDir) : getString(R.string.imported_failed),Toast.LENGTH_SHORT).show();                dismissDialog();            });        });    }

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