Android UI系列-----ScrollView和HorizontalScrollView的详解

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fillViewport="false">

  <LinearLayout
    android:id="@+id/layout"
    android:layout_height="match_parent"
    android:layout_width="wrap_content"
    android:orientation="vertical"/>

</ScrollView>

public class ScrollViewActivity extends Activity
{
  private LinearLayout layout;

  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_scrollview);

    layout = (LinearLayout) findViewById(R.id.layout);

    for(int i = 0; i < 8; i++)
    {
      // 通过资源文件来获得指定一个Drawable对象
      Drawable drawable = getResources().getDrawable(R.drawable.kk_hero);
      ImageView imageView = new ImageView(this);
      imageView.setImageDrawable(drawable);
      layout.addView(imageView);
    }
  }
}

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fillViewport="false">

  <LinearLayout
    android:id="@+id/layout"
    android:layout_height="match_parent"
    android:layout_width="wrap_content"
    android:orientation="vertical"/>

</ScrollView>

public class HttpUtils
{
  /**
   * 访问服务器端的内容
   * @param path 访问的url地址
   * @param encode  编码方式
   * @return 返回String类型的值
   */
  public static String getDataFromServer(String path, String encode)
  {
    String result = "";

    HttpClient httpClient = new DefaultHttpClient();
    try
    {
      HttpPost httpPost = new HttpPost(path);
      HttpResponse httpResponse = httpClient.execute(httpPost);
      if (httpResponse != null && httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
      {
        result = EntityUtils.toString(httpResponse.getEntity(), "utf-8");
      }
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
    finally
    {
      httpClient.getConnectionManager().shutdown();
    }

    return result;
  }
}

public class ScrollViewActivity extends Activity
{
  private LinearLayout layout;
  private ProgressDialog dialog;
  private TextView textView;
  private final String PATH = "http://172.25.152.34:8080/httptest/news.html";
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_scrollview);

    dialog = new ProgressDialog(this);
    dialog.setTitle("提示信息");
    dialog.setMessage("loading......");
    dialog.setCancelable(false);
    dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

    layout = (LinearLayout) findViewById(R.id.layout);
    textView = new TextView(this);

    layout.addView(textView);

    new MyTask().execute(PATH);
  }

  public class MyTask extends AsyncTask<String, Void, String>
  {
    @Override
    protected void onPreExecute()
    {
      dialog.show();
    }

    @Override
    protected String doInBackground(String... params)
    {
      String result = HttpUtils.getDataFromServer(params[0], "utf-8");
      return result;
    }

    @Override
    protected void onPostExecute(String s)
    {
      // Html类的fromHtml方法可以处理一个Html的字符串文本，这样就可以根据Html的标签在手机上展示其样式
      Spanned spanned = Html.fromHtml(s);
      textView.setText(spanned);
      // 给TextView设置一个方法，传一个LinkMovementMethod对象进去，这样当文本中如果有href链接时，系统会自动打开浏览器跳转到该href上
      textView.setMovementMethod(new LinkMovementMethod());
      dialog.dismiss();
    }
  }
}

public static Spanned fromHtml (String source)

Returns displayable styled text from the provided HTML string. Any <img> tags in the HTML will display as a generic replacement image which your program can then go through and replace with real images.

This uses TagSoup to handle real HTML, including all of the brokenness found in the wild.