Android - 为我的应用显示错误信息

Question

我正在从 Android Studio 中的本地 HTML 页面抓取数据，而不是抓取所有显示“text_view”的正确信息。有人知道如何显示我抓取的数据吗？下面是一段主要代码。

 public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
/*    try {

        File input = new File("C:\\Users\\user\\Desktop\\Mobile Newest\\JSoup\\app\\src\\main\\assets\\filename.html");
        Document doc = Jsoup.parse(input, "UTF-8");
        Elements tableElements = doc.select("td");
        TextView textView = (TextView)findViewById(R.id.text_view);
        for (Element td : tableElements) {
            textView.setText(td.text());
           System.out.println(td.text());
        }

    } catch (IOException e) {
        e.printStackTrace();
    }*/
    try {
        StringBuilder buf=new StringBuilder();
        InputStreamReader inputStream = new InputStreamReader(getAssets().open("filename.html"));
        BufferedReader bufferedReader = new BufferedReader(inputStream);
        String str;
        while ((str=bufferedReader.readLine()) != null) {
            buf.append(str);
        }
        Document doc = Jsoup.parse(buf.toString());
        //other code parts goes next
        Elements tableElements = doc.select("td");
        TextView textView = (TextView)findViewById(R.id.text_view);
        for (Element td : tableElements) {
            textView.setText(td.text());
            System.out.println(td.text());
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

下面是content_main.xml

    <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/activity_main" tools:context=".MainActivity">

<TextView android:text="text_view1"
    android:id="@+id/text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

Answer 1

我认为您无法从 android 设备访问本地计算机上的路径 C:\Users\user\Desktop\Mobile Newest\JSoup\app\src\main\assets\filename.html。您是否尝试过调试代码？我想你应该让你的 IOException 被解雇。您可以尝试像这样读取您的资产文件。

try {
        StringBuilder buf=new StringBuilder();
        InputStreamReader inputStream = new InputStreamReader(getAssets().open("filename.html"));
        BufferedReader bufferedReader = new BufferedReader(inputStream);
        String str;
        while ((str=bufferedReader.readLine()) != null) {
            buf.append(str);
        }
        Document doc = Jsoup.parse(buf.toString());
        //other code parts goes next

    } catch (IOException e) {
        e.printStackTrace();
    }