在Android中设置TextView span的颜色

Question

是否可以在TextView中设置文本范围的颜色？

我想做一些类似于Twitter应用程序的东西,其中一部分文本是蓝色的.见下图:

Answer 1

另一个答案非常相似,但不需要设置TextView两次的文本

TextView TV = (TextView)findViewById(R.id.mytextview01);

Spannable wordtoSpan = new SpannableString("I know just how to whisper, And I know just how to cry,I know just where to find the answers");        

wordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

TV.setText(wordtoSpan);

Answer 2

这是一个小帮助功能.非常适合您拥有多种语言!

private void setColor(TextView view, String fulltext, String subtext, int color) {
    view.setText(fulltext, TextView.BufferType.SPANNABLE);
    Spannable str = (Spannable) view.getText();
    int i = fulltext.indexOf(subtext);
    str.setSpan(new ForegroundColorSpan(color), i, i + subtext.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}

Answer 3

在尝试理解新概念时,我总能找到有用的视觉示例.

背景颜色

SpannableString spannableString = new SpannableString("Hello World!");
BackgroundColorSpan backgroundSpan = new BackgroundColorSpan(Color.YELLOW);
spannableString.setSpan(backgroundSpan, 0, spannableString.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

前景色

SpannableString spannableString = new SpannableString("Hello World!");
ForegroundColorSpan foregroundSpan = new ForegroundColorSpan(Color.RED);
spannableString.setSpan(foregroundSpan, 0, spannableString.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

组合

SpannableString spannableString = new SpannableString("Hello World!");
ForegroundColorSpan foregroundSpan = new ForegroundColorSpan(Color.RED);
BackgroundColorSpan backgroundSpan = new BackgroundColorSpan(Color.YELLOW);
spannableString.setSpan(foregroundSpan, 0, 8, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
spannableString.setSpan(backgroundSpan, 3, spannableString.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

进一步研究

• 解释Span标志的含义,如SPAN_EXCLUSIVE_EXCLUSIVE
• Android Spanned,SpannedString,Spannable,SpannableString和CharSequence

Answer 4

如果您想要更多控制,可能需要检查TextPaint该类.以下是如何使用它:

final ClickableSpan clickableSpan = new ClickableSpan() {
    @Override
    public void onClick(final View textView) {
        //Your onClick code here
    }

    @Override
    public void updateDrawState(final TextPaint textPaint) {
        textPaint.setColor(yourContext.getResources().getColor(R.color.orange));
        textPaint.setUnderlineText(true);
    }
};

Answer 5

设置您TextView的文本可跨越并ForegroundColorSpan为您的文本定义一个.

TextView textView = (TextView)findViewById(R.id.mytextview01);    
Spannable wordtoSpan = new SpannableString("I know just how to whisper, And I know just how to cry,I know just where to find the answers");          
wordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);    
textView.setText(wordtoSpan);

Answer 6

在某些情况下可以使用的另一种方法是在采用Spannable的视图的属性中设置链接颜色.

例如,如果您的Spannable将用于TextView,您可以在XML中设置链接颜色,如下所示:

<TextView
    android:id="@+id/myTextView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textColorLink="@color/your_color"
</TextView>

您也可以在代码中设置它:

TextView tv = (TextView) findViewById(R.id.myTextView);
tv.setLinkTextColor(your_color);

Answer 7

String text = "I don't like Hasina.";
textView.setText(spannableString(text, 8, 14));

private SpannableString spannableString(String text, int start, int end) {
    SpannableString spannableString = new SpannableString(text);
    ColorStateList redColor = new ColorStateList(new int[][]{new int[]{}}, new int[]{0xffa10901});
    TextAppearanceSpan highlightSpan = new TextAppearanceSpan(null, Typeface.BOLD, -1, redColor, null);

    spannableString.setSpan(highlightSpan, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    spannableString.setSpan(new BackgroundColorSpan(0xFFFCFF48), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    spannableString.setSpan(new RelativeSizeSpan(1.5f), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

    return spannableString;
}

输出：

Answer 8

使用kotlin-ktx，可以轻松实现

        bindView?.oneTimePasswordTitle?.text = buildSpannedString {
        append("One Time Password ")
        inSpans(
            ForegroundColorSpan(ContextCompat.getColor(bindView?.oneTimePasswordTitle?.context!!,R.color.colorPrimaryText))
        ){
            append(" (As Registered Email)")
        }

    }

Answer 9

只是添加到已接受的答案中，因为所有答案似乎都只讨论android.graphics.Color：如果我想要的颜色定义在 中怎么办res/values/colors.xml？

\n\n

例如，考虑中定义的Material Design 颜色colors.xml：

\n\n

<?xml version="1.0" encoding="utf-8"?>\n<resources>\n    <color name="md_blue_500">#2196F3</color>\n</resources>\n

\n\n

（android_material_design_colours.xml是你最好的朋友）

\n\n

ContextCompat.getColor(getContext(), R.color.md_blue_500)然后在您要使用的地方使用Color.BLUE，以便：

\n\n

wordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);\n

\n\n

变成：

\n\n

wordtoSpan.setSpan(new ForegroundColorSpan(ContextCompat.getColor(getContext(), R.color.md_blue_500)), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);\n

\n\n

我在哪里发现：

\n\n

\n
• 在 Android 中使用跨度 \xe2\x80\x93 Michael Spitsin \xe2\x80\x93 Medium
\n

\n

Answer 10

有一个工厂用于创建Spannable,并避免演员,如下所示:

Spannable span = Spannable.Factory.getInstance().newSpannable("text");

Answer 11

设置颜色对文本的传递字符串和颜色:

private String getColoredSpanned(String text, String color) {
  String input = "<font color=" + color + ">" + text + "</font>";
  return input;
}

通过调用以下代码在TextView/Button/EditText等上设置文本:

TextView的:

TextView txtView = (TextView)findViewById(R.id.txtView);

获取彩色字符串:

String name = getColoredSpanned("Hiren", "#800000");

在TextView上设置文本:

txtView.setText(Html.fromHtml(name));

完成

Answer 12

这是我为此提供的 Kotlin 扩展功能

    fun TextView.setColouredSpan(word: String, color: Int) {
        val spannableString = SpannableString(text)
        val start = text.indexOf(word)
        val end = text.indexOf(word) + word.length
        try {
            spannableString.setSpan(ForegroundColorSpan(color), start, end,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
            text = spannableString
        } catch (e: IndexOutOfBoundsException) {
         println("'$word' was not not found in TextView text")
    }
}

像这样将文本设置为 TextView 后使用它

private val blueberry by lazy { getColor(R.color.blueberry) }

textViewTip.setColouredSpan("Warning", blueberry)