java - 是否可以将字符串中的文本颜色更改为 Java 中的多种颜色？

Question

我的意思是，是否可以在单个字符串中将文本“This text is blue”更改为蓝色？一定有办法……

<TextView
    android:gravity="left"
    android:padding="3dip"
    android:text="This text is white. This text is blue."
    android:textColor="#ffffff"
    android:textSize="22dp"/>

Answer 1

是的，有可能。为此，您需要使用 SpannableString和 ForegroundColorSpan .

这应该看起来像这样:

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);