下面列出了android.text.Html#ImageGetter ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private Html.ImageGetter obtainImageGetter() {
if (_imageGetter != null) {
return _imageGetter;
}
_imageGetter = new Html.ImageGetter() {
@Override
public Drawable getDrawable(String source) {
if (_imageCache == null) {
_imageCache = new XulCachedHashMap<String, SpannedLabelImage>();
}
SpannedLabelImage spannedLabelImage = _imageCache.get(source);
if (spannedLabelImage == null) {
spannedLabelImage = new SpannedLabelImage();
spannedLabelImage._source = source;
_imageCache.put(source, spannedLabelImage);
_imageCacheChanged = true;
}
if (spannedLabelImage._drawable == null) {
return null;
}
return spannedLabelImage._drawable;
}
};
return _imageGetter;
}
private Html.ImageGetter obtainImageGetter() {
if (_imageGetter != null) {
return _imageGetter;
}
_imageGetter = new Html.ImageGetter() {
@Override
public Drawable getDrawable(String source) {
if (_imageCache == null) {
_imageCache = new XulCachedHashMap<String, SpannedLabelImage>();
}
SpannedLabelImage spannedLabelImage = _imageCache.get(source);
if (spannedLabelImage == null) {
spannedLabelImage = new SpannedLabelImage();
spannedLabelImage._source = source;
_imageCache.put(source, spannedLabelImage);
_imageCacheChanged = true;
}
if (spannedLabelImage._drawable == null) {
return null;
}
return spannedLabelImage._drawable;
}
};
return _imageGetter;
}
private void startImg(SpannableStringBuilder text, String src, Html.ImageGetter img) {
Drawable d = null;
if (img != null) {
d = img.getDrawable(src);
}
if (d == null) {
d = getResources().getDrawable(R.mipmap.ic_launcher);
d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
}
int len = text.length();
text.append("\uFFFC");
text.setSpan(new ImageSpan(d, src), len, text.length(),
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
private static void startImg(SpannableStringBuilder text,
Attributes attributes, Html.ImageGetter img) {
String cssClass = attributes.getValue("class");
String src = cssClass != null && attributes.getValue("", "src") == null ? cssClass.substring(cssClass.indexOf("-") + 1) : attributes.getValue("", "src");
Drawable d = null;
if (img != null) {
d = img.getDrawable(src);
}
if (d == null) {
// don't draw anything
return;
}
int len = text.length();
text.append("\uFFFC");
text.setSpan(new ImageSpan(d, src), len, text.length(),
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
/**
* Parses String containing HTML to Android's Spannable format and displays it in this TextView.
*
* @param html String containing HTML, for example: "<b>Hello world!</b>"
*/
public void setHtmlFromString(String html, boolean useLocalDrawables) {
Html.ImageGetter imgGetter;
if (useLocalDrawables) {
imgGetter = new LocalImageGetter(getContext());
} else {
imgGetter = new UrlImageGetter(this, getContext());
}
try {
// this uses Android's Html class for basic parsing, and HtmlTagHandler
setText(Html.fromHtml(html, imgGetter, new HtmlTagHandler()));
} catch (RuntimeException e) {
setText("");
}
// make links work
setMovementMethod(LinkMovementCheck.getInstance());
// no flickering when clicking textview for Android < 4, but overriders color...
// text.setTextColor(getResources().getColor(android.R.color.secondary_text_dark_nodisable));
}
private static void startImg(Editable text, Attributes attributes, Html.ImageGetter img) {
String src = attributes.getValue("", "src");
Drawable d = null;
if (img != null) {
d = img.getDrawable(src);
}
if (d == null) {
//d = Resources.getSystem().
// getDrawable(R.drawable.seek_thumb);
//d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
return;
}
int len = text.length();
text.append("\uFFFC");
text.setSpan(new ImageSpan(d, src), len, text.length(),
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
public StyleBuilderImpl(TextView textView, Html.ImageGetter imageGetter) {
this.textViewWeakReference = new WeakReference<>(textView);
this.imageGetter = imageGetter;
Context context = textView.getContext();
TypedArray a = context.obtainStyledAttributes(null, R.styleable.MarkdownTheme, R.attr.markdownStyle, 0);
final boolean failed = !a.hasValue(0);
if (failed) {
Log.w("Markdown", "Missing markdownStyle in your theme, using hardcoded color.");
h1_text_color = 0xdf000000;
h6_text_color = 0x8a000000;
quota_color = 0x4037474f;
quota_text_color = 0x61000000;
code_text_color = 0xd8000000;
code_background_color = 0x0c37474f;
link_color = 0xdc3e7bc9;
h_under_line_color = 0x1837474f;
} else {
h1_text_color = a.getColor(R.styleable.MarkdownTheme_h1TextColor, 0);
h6_text_color = a.getColor(R.styleable.MarkdownTheme_h6TextColor, 0);
quota_color = a.getColor(R.styleable.MarkdownTheme_quotaColor, 0);
quota_text_color = a.getColor(R.styleable.MarkdownTheme_quotaTextColor, 0);
code_text_color = a.getColor(R.styleable.MarkdownTheme_codeTextColor, 0);
code_background_color = a.getColor(R.styleable.MarkdownTheme_codeBackgroundColor, 0);
link_color = a.getColor(R.styleable.MarkdownTheme_linkColor, 0);
h_under_line_color = a.getColor(R.styleable.MarkdownTheme_underlineColor, 0);
}
a.recycle();
}
/**
* 解析markdown文本并返回spanned
*
* @param source 源文本
* @param imageGetter 图片获取回调
* @param textView textView
* @return spanned
*/
public static Spanned fromMarkdown(String source, Html.ImageGetter imageGetter, TextView textView) {
MarkDownParser parser = new MarkDownParser(source, new StyleBuilderImpl(textView, imageGetter));
try {
return parser.parse();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 解析markdown文本并返回spanned
*
* @param inputStream 输入流
* @param imageGetter 图片获取回调
* @param textView textView
* @return spanned
*/
public static Spanned fromMarkdown(InputStream inputStream, Html.ImageGetter imageGetter, TextView textView) {
MarkDownParser parser = new MarkDownParser(inputStream, new StyleBuilderImpl(textView, imageGetter));
try {
return parser.parse();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 解析markdown文本并返回spanned
*
* @param reader BufferReader
* @param imageGetter 图片获取回调
* @param textView textView
* @return spanned
*/
public static Spanned fromMarkdown(BufferedReader reader, Html.ImageGetter imageGetter, TextView textView) {
MarkDownParser parser = new MarkDownParser(reader, new StyleBuilderImpl(textView, imageGetter));
try {
return parser.parse();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public AsyncLoadNetworkPic(Context context, TextView editText, String content, Html.ImageGetter imageGetter, Html.TagHandler htmlTagHandler){
this.context=context;
this.editText = editText;
this.content = content;
this.imageGetter = imageGetter;
this.htmlTagHandler = htmlTagHandler;
}
public CustomHtmlToSpannedConverter(String source,
Html.ImageGetter imageGetter, Html.TagHandler tagHandler,
Parser parser, Html.ImageGetter emojiGetter, String baseUri, Context context) {
mSource = source;
mSpannableStringBuilder = new SpannableStringBuilder();
mImageGetter = imageGetter;
mTagHandler = tagHandler;
mReader = parser;
mEmojiGetter = emojiGetter;
mBaseUri = baseUri;
userMentionColor = ContextCompat.getColor(context, R.color.dark_red);
userMentionSelfColor = ContextCompat.getColor(context, R.color.self_mention_color);
}
/**
* Wrapper around Html.fromHtml for deprecation.
*/
@SuppressWarnings("deprecation")
private static CharSequence fromHtml(String source, Html.ImageGetter imageGetter, CustomHtmlTagHandler customHtmlTagHandler) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
return Html.fromHtml(source, Html.FROM_HTML_MODE_LEGACY, imageGetter, customHtmlTagHandler);
} else {
return Html.fromHtml(source, imageGetter, customHtmlTagHandler);
}
}
public void onBind(byte[] result) {
String text = new String(result).trim();
//Log.d("text", text = UnicodeDecoder.unescape2(text));
Html.ImageGetter imageGetter = new Html.ImageGetter() {
@Override
public Drawable getDrawable(String source) {
//Log.d("text", source);
Bitmap bitmap = StreamUtils.base64ToBitmap(source.replaceAll("data:image/(png|jpeg);base64,", "")/*.replaceAll("\\s", "")*/);
if (null == bitmap || (bitmap.getWidth() < minImgHeight && bitmap.getHeight() < minImgHeight)) {
Log.d("text", "bitmap decode failed.");
return null;
}
float width = bitmap.getWidth() * systemScale;
float height = bitmap.getHeight() * systemScale;
if (width > screenWidth) {
float ratio = screenWidth / width;
height = ratio * height;
width = screenWidth;
}
Drawable drawable = new BitmapDrawable(null, bitmap);
drawable.setBounds(0, 0, (int) width, (int) height);
return drawable;
}
};
Spanned spanned = AKHtml.fromHtml(text, imageGetter, null);
textView.setText(spanned);
}
public HtmlToSpannedConverter(String source, Html.ImageGetter imageGetter,
Html.TagHandler tagHandler, Parser parser, int flags) {
mSource = source;
mSpannableStringBuilder = new SpannableStringBuilder();
mImageGetter = imageGetter;
mTagHandler = tagHandler;
mReader = parser;
mFlags = flags;
}
static SpannableStringBuilder fromDocument(
Context context, @NonNull Document document, boolean compress,
@Nullable Html.ImageGetter imageGetter, @Nullable Html.TagHandler tagHandler) {
return fromDocument(context, document, true, compress, imageGetter, tagHandler);
}
static Spanned fromHtml(@NonNull String html, boolean compress, @Nullable Html.ImageGetter imageGetter, @Nullable Html.TagHandler tagHandler, Context context) {
Document document = JsoupEx.parse(html);
return fromDocument(context, document, false, compress, imageGetter, tagHandler);
}
public void setTextViewHTML(String html, Html.ImageGetter imgGetter) {
SpannableStringBuilder strBuilder = new SpannableStringBuilder(Html.fromHtml(html, imgGetter, null));
removeUnderlines(strBuilder);
setText(strBuilder);
}
/**
* Parses String containing HTML to Android's Spannable format and displays it in this TextView.
* Using the implementation of Html.ImageGetter provided.
*
* @param html String containing HTML, for example: "<b>Hello world!</b>"
* @param imageGetter for fetching images. Possible ImageGetter provided by this library:
* HtmlLocalImageGetter and HtmlRemoteImageGetter
*/
public void setHtml(@NonNull String html, @Nullable Html.ImageGetter imageGetter) {
setText(HtmlFormatter.formatHtml(html, imageGetter, clickableTableSpan, drawTableLinkSpan, onClickATagListener,indent, removeTrailingWhiteSpace));
// make links work
setMovementMethod(LocalLinkMovementMethod.getInstance());
}
/**
* Returns displayable styled text from the provided HTML string with the legacy flags
* {@link #FROM_HTML_MODE_LEGACY}.
*
* @deprecated use {@link #fromHtml(String, int, Html.ImageGetter, Html.TagHandler)} instead.
*/
@Deprecated
public static Spanned fromHtml(String source, Html.ImageGetter imageGetter, Html.TagHandler tagHandler) {
return fromHtml(source, FROM_HTML_MODE_LEGACY, imageGetter, tagHandler);
}