android上多样式文本的使用

 from stackoverflow.com：

SpannableStringBuilder builder = new SpannableStringBuilder();

String red = "this is red";
SpannableString redSpannable= new SpannableString(red);
redSpannable.setSpan(new ForegroundColorSpan(Color.RED), 0, red.length(), 0);
builder.append(redSpannable);

String white = "this is white";
SpannableString whiteSpannable= new SpannableString(white);
whiteSpannable.setSpan(new ForegroundColorSpan(Color.WHITE), 0, white.length(), 0);
builder.append(whiteSpannable);

String blue = "this is blue";
SpannableString blueSpannable = new SpannableString(blue);
blueSpannable.setSpan(new ForegroundColorSpan(Color.BLUE), 0, blue.length(), 0);
builder.append(blueSpannable);

mTextView.setText(builder, BufferType.SPANNABLE);

or

 

yourTextView.setText(Html.fromHtml("<FONT COLOR=\"#80776b\" >First color</Font>"+"<FONT COLOR=\"#80776b\" >Second color</Font>"));

or 

String text = "This text is white. <font color=\"blue\">This text is blue.</font>";
textView.setText(Html.fromHtml(text), BufferType.SPANNABLE);

还有人封装了一下API:

I created a class like this:

import android.text.SpannableStringBuilder;
import android.text.style.CharacterStyle;

public class StyleableSpannableStringBuilder extends SpannableStringBuilder {
    public StyleableSpannableStringBuilder appendWithStyle(CharacterStyle c, CharSequence text) {
        super.append(text);
        int startPos = length() - text.length();
        setSpan(c, startPos, length(), 0);
        return this;
    }

    public StyleableSpannableStringBuilder appendWithStyle(CharacterStyle [] c, CharSequence text) {
        super.append(text);
        int startPos = length() - text.length();
        for (CharacterStyle c1 : c)
            setSpan(c1, startPos, length(), 0);
        return this;
    }
}

This allows me to do things like this:

 

private void buildTickerItem(DelayedQuoteServiceObject o)
{
    Double lastPrice = Double.parseDouble(o.getValue("LastPrice"));
    Double dayChange = Double.parseDouble(o.getValue("DayChange"));
    Double percentChange = Double.parseDouble(o.getValue("PercentDayChange")) / 100;

    if (o.isIndex() == true)
    {

        tickerTapeData.appendWithStyle(new StyleSpan(Typeface.BOLD),o.getDisplayName());
        tickerTapeData.append(" "+ indexFormat.format(lastPrice) + " (");

        if (dayChange >= 0)
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), indexFormat.format(dayChange));
        else
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), indexFormat.format(dayChange));
    }
    else
    {
        tickerTapeData.appendWithStyle(new StyleSpan(Typeface.BOLD), o.ticker);

        tickerTapeData.append("@"+ dollarFormat.format(lastPrice) + " (");

        if (dayChange >= 0)
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), dollarFormat.format(dayChange));
        else
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), dollarFormat.format(dayChange));


    }

    tickerTapeData.append("/");


    if (dayChange >= 0)
        tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), percentFormat.format(percentChange));
    else
        tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), percentFormat.format(percentChange));

    tickerTapeData.append(")  ");
}