返回活动后如何停止progressDialog？

ProgressDialog progressDialog = new ProgressDialog(PreviousActivity.this);
progressDialog.setMessage("加载中...");
progressDialog.show();

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
        // 处理返回结果
        
        // 停止ProgressDialog
        if (progressDialog != null && progressDialog.isShowing()) {
            progressDialog.dismiss();
        }
    }
}

Intent intent = new Intent();
// 设置返回结果
setResult(RESULT_OK, intent);
// 关闭当前活动
finish();