android中的自定义TextView具有不同的颜色词 [英] Custom TextView in android with different color words

问题描述

是否可以让 textview 为每个单词设置不同的颜色?甚至每一个字母?我尝试扩展 textview 并创建它，但是我想到的问题是，如何同时用不同的颜色绘制所有文本?

Is it possible to have a textview to have different color for every word? Or even every letter? I tried extending textview and creating it but however I thought of the problem is, how would I draw all the the text out at the same time with different colors?

推荐答案

使用<代码>android.text.Spannable

final SpannableStringBuilder str = new SpannableStringBuilder(text);
str.setSpan(
    new ForegroundColorSpan(Color.BLUE), 
    wordStart, 
    wordEnd, 
    SpannableStringBuilder.SPAN_EXCLUSIVE_EXCLUSIVE
);
myTextView.setText(str);

编辑:让所有Java"变成绿色

EDIT: To make all "Java" green

final Pattern p = Pattern.compile("Java");
final Matcher matcher = p.matcher(text);

final SpannableStringBuilder spannable = new SpannableStringBuilder(text);
final ForegroundColorSpan span = new ForegroundColorSpan(Color.GREEN);
while (matcher.find()) {
    spannable.setSpan(
        span, matcher.start(), matcher.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
    );
}
myTextView.setText(spannable);

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