在Android应用中重启后尝试打开文件夹时出现权限错误

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)
        != PackageManager.PERMISSION_GRANTED ||
    ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
        != PackageManager.PERMISSION_GRANTED) {
    // 权限未被授予，需要请求权限
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE},
            PERMISSION_REQUEST_CODE);
} else {
    // 权限已被授予，可以进行文件操作
    openFolder();
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    if (requestCode == PERMISSION_REQUEST_CODE) {
        if (grantResults.length > 0 &&
                grantResults[0] == PackageManager.PERMISSION_GRANTED &&
                grantResults[1] == PackageManager.PERMISSION_GRANTED) {
            // 权限已被授予，可以进行文件操作
            openFolder();
        } else {
            // 权限未被授予，无法进行文件操作，可以给出提示或其他处理
            Toast.makeText(this, "需要文件访问权限才能打开文件夹", Toast.LENGTH_SHORT).show();
        }
    }
}