Android：如何处理嵌入在使用JSON检索的字符串中的html 标记
我有一个显示文章的新闻网站，我已经在android studio中编写了一个java代码，以便从像 JSON这样的URL获取文章的内容，到目前为止它们都很好。
但是在文章中可能有描述中的照片，现在我想从描述节点获取html
这是我的测试代码，如果这有助于：
import java.io.IOException; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ProgressDialog; import android.content.DialogInterface; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.app.Activity; import android.text.Html; import android.util.Log; import android.widget.ImageView; import android.widget.TextView; import java.io.InputStream; public class SingleContactActivity extends Activity { public static String myArticleUrl = "http://ana.fm/api/article/"; TextView title; TextView desc; ImageView img; String ar_id; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.article); title = (TextView) findViewById(R.id.single_article_title); desc = (TextView) findViewById(R.id.single_article_desc); img = (ImageView) findViewById(R.id.single_article_cover_photo); ar_id = getIntent().getExtras().getString("id"); myArticleUrl = myArticleUrl.concat(ar_id); new LoadAllArticles().execute(); } // Load an image from a url private class DownloadImageTask extends AsyncTask { ImageView bmImage; public DownloadImageTask(ImageView bmImage) { this.bmImage = bmImage; } protected Bitmap doInBackground(String... urls) { String urldisplay = urls[0]; Bitmap mIcon11 = null; try { InputStream in = new java.net.URL(urldisplay).openStream(); mIcon11 = BitmapFactory.decodeStream(in); } catch (Exception e) { Log.e("Error", e.getMessage()); e.printStackTrace(); } return mIcon11; } protected void onPostExecute(Bitmap result) { bmImage.setImageBitmap(result); } } // LOADING THE ARTICLE CONTENTS IN THE BACKGROUND class LoadAllArticles extends AsyncTask { private ProgressDialog progressDialog = new ProgressDialog(SingleContactActivity.this); InputStream inputStream = null; String result = ""; HttpResponse httpResponse; HttpEntity httpEntity; protected void onPreExecute() { progressDialog.setMessage("Downloading article..."); progressDialog.show(); progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { public void onCancel(DialogInterface arg0) { LoadAllArticles.this.cancel(true); } }); } @Override protected Void doInBackground(String... params) { String url_select = myArticleUrl; // Set up HTTP Get HttpClient httpClient = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url_select); try { httpResponse = httpClient.execute(httpGet); result = EntityUtils.toString(httpResponse.getEntity(), "UTF-8"); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } protected void onPostExecute(Void v) { //parse JSON data try { JSONObject parent_obj = new JSONObject(result); JSONArray jArray= parent_obj.getJSONArray("article"); JSONObject json = jArray.getJSONObject(0); String ar_title = json.getString("title"); String ar_desc = json.getString("description"); String ar_image = json.getString("inner_photo"); String newTitle = Html.fromHtml(ar_title).toString(); title.setText(newTitle); String newDesc = Html.fromHtml(ar_desc).toString(); desc.setText(newDesc); if(ar_image != null) { String img_url = "http://www.ana.fm/photos/articles/".concat(ar_image); new DownloadImageTask(img).execute(img_url); } this.progressDialog.dismiss(); } catch (JSONException e) { Log.e("JSONException", "Error: " + e.toString()); } // catch (JSONException e) } } }
这是XML article.xml：
有没有办法做到这一点 ？
您可以尝试使用该类：
public class UILImageGetter implements Html.ImageGetter { Context c; TextView container; public UILImageGetter(View textView, Context context) { this.c = context; this.container = (TextView) textView; } @Override public Drawable getDrawable(String source) { urlDrawable = new UrlImageDownloader(c.getResources(), source); urlDrawable.drawable = c.getResources().getDrawable(R.drawable.no_image); ImageLoader.getInstance().loadImage(source, new SimpleListener(urlDrawable)); return urlDrawable; } private class SimpleListener extends SimpleImageLoadingListener { UrlImageDownloader urlImageDownloader; public SimpleListener(UrlImageDownloader downloader) { super(); urlImageDownloader = downloader; } @Override public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) { int width = loadedImage.getWidth(); int height = loadedImage.getHeight(); int newWidth = width; int newHeight = height; if(width > container.getWidth() ) { newWidth = container.getWidth(); newHeight = (newWidth * height) / width; } if (view != null) { view.getLayoutParams().width = newWidth; view.getLayoutParams().height = newHeight; } Drawable result = new BitmapDrawable(c.getResources(), loadedImage); result.setBounds(0, 0, newWidth, newHeight); urlImageDownloader.setBounds(0, 0, newWidth, newHeight); urlImageDownloader.drawable = result; container.setHeight((container.getHeight() + result.getIntrinsicHeight())); container.invalidate(); } } private class UrlImageDownloader extends BitmapDrawable { public Drawable drawable; public UrlImageDownloader(Resources res, String filepath) { super(res, filepath); drawable = new BitmapDrawable(res, filepath); } @Override public void draw(Canvas canvas) { if(drawable != null) { drawable.draw(canvas); } } }
如果这样做，则必须导入库图像加载器 。 在他们之后你写这个：
Spanned spanned = Html.fromHtml(ar_desc, new UILImageGetter(desc, this), null); desc.setText(spanned);
此外，您可以使用WebView。