Question

使用JSoup将HTML网站解析为Android Studio（片段）时，Android Studio t show an error and the AVD starts. But, I can不会更改TextView的文本。设置TextView的文本无效。

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        new Website().execute();

        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }


    }

    // Title AsyncTask
    private class Website extends AsyncTask<Void, Void, Void> {
        String title;


        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }


        @Override
        protected Void doInBackground(Void... params) {
            try {
                // Connect to the web site
                Document doc = Jsoup.connect("https://www.facebook.com/").get();
                // Get the html document title
                title = doc.title();
            }
            catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }


        @Override
        protected void onPostExecute(Void result) {

            // Set title into TextView
            TextView txttitle = (TextView) getView().findViewById(R.id.titletxt);
            txttitle.setText(title);
        }


        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }

我想在TextView“ titletxt”中显示网站的标题。

Answer 1

最好在onImagePick(event: Event){ const file = (event.target as HTMLInputElement).files[0]; this.uploadForm.patchValue({ pdf : file }); this.uploadForm.get('pdf').updateValueAndValidity(); }上执行任务片段该代码工作正常。或将用户代理设置为jsoup。可能会有帮助

用Fragment中的JSoup解析HTML

1 个答案: