Html.ImageGetter TextView

所以我使用ImageGetter显示来自JSON博客文章的图像。 我在日志中获取正确的源代码,但是当URL达到setBounds时,URL会发生变化。 有任何想法吗?

码:

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_blog_view); Intent intent = getIntent(); Uri blogUri = intent.getData(); mPost = blogUri.toString(); mUrl = getIntent().getStringExtra("mUrl"); TextView textView = (TextView) findViewById(R.id.scrollView1); textView.setText(Html.fromHtml(mPost, imgGetter, null)); } private ImageGetter imgGetter = new ImageGetter(){ @Override public Drawable getDrawable(String source){ Drawable drawable = Drawable.createFromPath(source); try { drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); }catch (NullPointerException e){ logException(e); } return drawable; } }; 

尝试之前的“来源”是

http://www.domain.com/images_blog/feature.png

但在抓错误的是:

无法解码stream:

 java.io.FileNotFoundException: /http:/www.domain.com/images_blog/feature.png : open failed: ENOENT (No such file or directory) 

Solutions Collecting From Web of "Html.ImageGetter TextView"

最简单的解决scheme是:

 import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import org.pskink.soom.R; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.LevelListDrawable; import android.os.AsyncTask; import android.os.Bundle; import android.text.Html; import android.text.Html.ImageGetter; import android.text.Spanned; import android.util.Log; import android.widget.TextView; public class TestImageGetter extends Activity implements ImageGetter { private final static String TAG = "TestImageGetter"; private TextView mTv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.test_image_getter); String source = "this is a test of <b>ImageGetter</b> it contains " + "two images: <br/>" + "<img src=\"http://sofzh.miximages.com/java/dac_logo.png\"><br/>and<br/>" + "<img src=\"http://sofzh.miximages.com/java/icon_search.png\">"; Spanned spanned = Html.fromHtml(source, this, null); mTv = (TextView) findViewById(R.id.text); mTv.setText(spanned); } @Override public Drawable getDrawable(String source) { LevelListDrawable d = new LevelListDrawable(); Drawable empty = getResources().getDrawable(R.drawable.ic_launcher); d.addLevel(0, 0, empty); d.setBounds(0, 0, empty.getIntrinsicWidth(), empty.getIntrinsicHeight()); new LoadImage().execute(source, d); return d; } class LoadImage extends AsyncTask<Object, Void, Bitmap> { private LevelListDrawable mDrawable; @Override protected Bitmap doInBackground(Object... params) { String source = (String) params[0]; mDrawable = (LevelListDrawable) params[1]; Log.d(TAG, "doInBackground " + source); try { InputStream is = new URL(source).openStream(); return BitmapFactory.decodeStream(is); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(Bitmap bitmap) { Log.d(TAG, "onPostExecute drawable " + mDrawable); Log.d(TAG, "onPostExecute bitmap " + bitmap); if (bitmap != null) { BitmapDrawable d = new BitmapDrawable(bitmap); mDrawable.addLevel(1, 1, d); mDrawable.setBounds(0, 0, bitmap.getWidth(), bitmap.getHeight()); mDrawable.setLevel(1); // i don't know yet a better way to refresh TextView // mTv.invalidate() doesn't work as expected CharSequence t = mTv.getText(); mTv.setText(t); } } } } 

图像下载后,有一种不太好的方式来重新布局TextView:

 // i don't know yet a better way to refresh TextView // mTv.invalidate() doesn't work as expected CharSequence t = mTv.getText(); mTv.setText(t); 

如果有人知道更好的解决scheme,请让我知道

如果您有mTV(我的意思是TextView),您可以根据其尺寸(mTv.getWidth()和mTv.getHeight())和创build的位图(bitmap.getWidth()和bitmap.getHeight()这些值作为TextView(mTv)的新维度。

  if (bitmap != null) { BitmapDrawable d = new BitmapDrawable(bitmap); mDrawable.addLevel(1, 1, d); int width = mTv.getWidth() < bitmap.getWidth() ? mTv.getWidth() : bitmap.getWidth(); int height = bitmap.getHeight() * width / bitmap.getWidth(); mDrawable.setBounds(0, 0, width, height); mDrawable.setLevel(1); // i don't know yet a better way to refresh TextView // mTv.invalidate() doesn't work as expected // but we can calculate new TextView dimensions mTv.setHeight(height); CharSequence t = mTv.getText(); mTv.setText(t); } 

这个答案可能有助于某人。 我用Jsoup从string中提取<Img/>标签,然后在ImageView显示图像,在Textview显示<p> 。 结果是根据我所需要的。 此外,我用通用图像加载器Libaray在ImageView加载图像然后我添加视图以编程方式布局在我的情况布局是linearlayout所以我做了一个辅助类,并通过内容,HTMLstring和线性布局作为参数。

在你的项目中添加jsoup。

 compile 'org.jsoup:jsoup:1.9.2' 

这里有一些片段。

 public class PostContentHandler { Context context; String content; LinearLayout linearLayout; public PostContentHandler(Context context, String content, LinearLayout linearLayout) { this.context = context; this.content = content; this.linearLayout = linearLayout; } public void setContentToView() { //custom font Typeface bitterBoldFont = Typeface.createFromAsset(context.getAssets(), "fonts/Bitter-Regular.otf"); List<String> p = new ArrayList<>(); List<String> src = new ArrayList<>(); List<String> li = new ArrayList<>(); Document doc = Jsoup.parse(content); Elements elements = doc.getAllElements(); for (Element element : elements) { Tag tag = element.tag(); if (tag.getName().matches("h[1-6]{1}")) { String heading = element.select(tag.getName().toString()).text(); TextView textView = new TextView(context); textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) textView.getLayoutParams(); int top = (int) context.getResources().getDimension(R.dimen.heading_margin_top); int start = (int) context.getResources().getDimension(R.dimen.content_margin); int end = (int) context.getResources().getDimension(R.dimen.content_margin); params.setMargins(start, top, end, 0); textView.setTextSize(20); textView.setTypeface(bitterBoldFont); textView.setText(heading); textView.setTextColor(context.getResources().getColor(R.color.black)); linearLayout.addView(textView); } if (tag.getName().equalsIgnoreCase("p")) { element.select("img").remove(); String body = element.html(); TextView textView = new TextView(context); textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) textView.getLayoutParams(); int top = (int) context.getResources().getDimension(R.dimen.heading_margin_top); int start = (int) context.getResources().getDimension(R.dimen.content_margin); int end = (int) context.getResources().getDimension(R.dimen.content_margin); params.setMargins(start, top, end, 0); textView.setTypeface(bitterBoldFont); textView.setLinksClickable(true); textView.setAutoLinkMask(Linkify.WEB_URLS); textView.setText(Html.fromHtml(body)); textView.setTextColor(context.getResources().getColor(R.color.content_color)); linearLayout.addView(textView); p.add(body); } if (tag.getName().equalsIgnoreCase("ol")) { String ol = element.select(tag.getName().toString()).outerHtml(); TextView textView = new TextView(context); textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) textView.getLayoutParams(); params.setMarginStart((int) context.getResources().getDimension(R.dimen.content_margin)); int top = (int) context.getResources().getDimension(R.dimen.heading_margin_top); int start = (int) context.getResources().getDimension(R.dimen.content_margin); int end = (int) context.getResources().getDimension(R.dimen.content_margin); params.setMargins(start, top, end, 0); textView.setTypeface(bitterBoldFont); textView.setLinksClickable(true); textView.setAutoLinkMask(Linkify.WEB_URLS); textView.setTextColor(context.getResources().getColor(R.color.content_color)); textView.setText(Html.fromHtml(ol, null, new MyTagHandler())); linearLayout.addView(textView); } if (tag.getName().equalsIgnoreCase("ul")) { String ul = element.select(tag.getName().toString()).outerHtml(); TextView textView = new TextView(context); textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) textView.getLayoutParams(); int top = (int) context.getResources().getDimension(R.dimen.heading_margin_top); int start = (int) context.getResources().getDimension(R.dimen.content_margin); int end = (int) context.getResources().getDimension(R.dimen.content_margin); params.setMargins(start, top, end, 0); textView.setTypeface(bitterBoldFont); textView.setLinksClickable(true); textView.setAutoLinkMask(Linkify.WEB_URLS); textView.setTextColor(context.getResources().getColor(R.color.content_color)); textView.setText(Html.fromHtml(ul, null, new MyTagHandler())); linearLayout.addView(textView); } if (tag.getName().equalsIgnoreCase("img")) { String url = element.select("img").attr("src"); final ImageView imageView = new ImageView(context); imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)); final ProgressBar progressBar = new ProgressBar(context); linearLayout.addView(progressBar); progressBar.setVisibility(View.GONE); ImageLoader imageLoader = ImageLoader.getInstance(); imageLoader.displayImage(url, imageView, new SimpleImageLoadingListener() { @Override public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) { super.onLoadingComplete(imageUri, view, loadedImage); progressBar.setVisibility(View.INVISIBLE); int height = loadedImage.getHeight(); imageView.getLayoutParams().height = getScreenWidth(); imageView.setAdjustViewBounds(true); imageView.requestLayout(); } @Override public void onLoadingStarted(String imageUri, View view) { super.onLoadingStarted(imageUri, view); progressBar.setVisibility(View.VISIBLE); } }); linearLayout.addView(imageView); src.add(url); } } } public static int getScreenWidth() { return Resources.getSystem().getDisplayMetrics().widthPixels; } } 

我希望我的回答能帮助别人。