使用SpannableStringBuilder

SpannableStringBuilder builder = new SpannableStringBuilder();

SpannableString str1= new SpannableString("Text1");
str1.setSpan(new ForegroundColorSpan(Color.RED), 0, str1.length(), 0);
builder.append(str1);

SpannableString str2= new SpannableString(appMode.toString());
str2.setSpan(new ForegroundColorSpan(Color.GREEN), 0, str2.length(), 0);
builder.append(str2);

TextView tv = (TextView) view.findViewById(android.R.id.text1);
tv.setText( builder, TextView.BufferType.SPANNABLE);

芬兰湾的科特林:

@JvmStatic
    @BindingAdapter(
        "app:txt1",
        "app:txt2",
        "app:color1",
        "app:color2",
        requireAll = false
    )
    fun setColors(
        txtView: AppCompatTextView,
        txt1: String,
        txt2: String,
        color1: Int,
        color2: Int
    ) {
        txtView.setColors(txt1 = txt1, txt2 = txt2, color1 = color1, color2)
    }


fun AppCompatTextView.setColors(txt1: String, txt2: String, color1: Int, color2: Int) {


        val word: Spannable = SpannableString(txt1)

        word.setSpan(
            ForegroundColorSpan(ContextCompat.getColor(this.context, color1)),
            0,
            word.length,
            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
        )

        this.text = word
        val wordTwo: Spannable = SpannableString(txt2)

        wordTwo.setSpan(
            ForegroundColorSpan(ContextCompat.getColor(this.context, color2)),
            0,
            wordTwo.length,
            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
        )
        this.append(wordTwo)

    }


<androidx.appcompat.widget.AppCompatTextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:txt1="@{}"
            app:txt2="@{}"
            app:color1="@{}"
            app:color2="@{}" />

如果你想在strings.xml中给出文本颜色和文本大小，那么检查下面的代码:

<string name="txt_my_string">
    <font fgcolor='#CFD8DC' > Text with given color </font> // Custom text color
    <font size="14" > Text with given size </font> // Custom Text size
    <font fgcolor='#3A55EA' size="14" > Text with given color and size </font> // Custom text color and size
</string>

希望你能容易理解:)

if (Build.VERSION.SDK_INT >= 24) {
     Html.fromHtml(String, flag) // for 24 API  and more
 } else {
     Html.fromHtml(String) // or for older API 
 }

用于24个API及以上(标志)

public static final int FROM_HTML_MODE_COMPACT = 63;
public static final int FROM_HTML_MODE_LEGACY = 0;
public static final int FROM_HTML_OPTION_USE_CSS_COLORS = 256;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_BLOCKQUOTE = 32;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_DIV = 16;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_HEADING = 2;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_LIST = 8;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_LIST_ITEM = 4;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_PARAGRAPH = 1;
public static final int TO_HTML_PARAGRAPH_LINES_CONSECUTIVE = 0;
public static final int TO_HTML_PARAGRAPH_LINES_INDIVIDUAL = 1;

更多信息

让普通函数转换你的字符串是可扩展的，像这样。

//pass param textviewid ,start,end,string
//R.color.Red it's your color you can change it as requirement

fun SpannableStringWithColor(view: TextView,start:Int,end:Int, s: String) {
    val wordtoSpan: Spannable =
        SpannableString(s)
    wordtoSpan.setSpan(
        ForegroundColorSpan(ContextCompat.getColor(view.context, R.color.Red)),
        start,
        end,
        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
    )
    view.text = wordtoSpan
    }

像这样的要求我们可以在任何地方使用。

 SpannableStringWithColor(tvMobileNo,0,14,"Mobile Number :   " + "123456789")

 SpannableStringWithColor(tvEmail,0,5,"Email :   " + "abc@gmail.com" "))

 SpannableStringWithColor(tvAddress,0,8,"Address :   " + "Delhi India")

我已经这么做了，试试吧:

TextView textView=(TextView)findViewById(R.id.yourTextView);//init

//here I am appending two string into my textView with two diff colors.
//I have done from fragment so I used here getActivity(), 
//If you are trying it from Activity then pass className.this or this; 

textView.append(TextViewUtils.getColoredString(getString(R.string.preString),ContextCompat.getColor(getActivity(),R.color.firstColor)));
textView.append(TextViewUtils.getColoredString(getString(R.string.postString),ContextCompat.getColor(getActivity(),R.color.secondColor)));

在你的TextViewUtils类中添加这个方法:

 /***
 *
 * @param mString this will setup to your textView
 * @param colorId  text will fill with this color.
 * @return string with color, it will append to textView.
 */
public static Spannable getColoredString(String mString, int colorId) {
    Spannable spannable = new SpannableString(mString);
    spannable.setSpan(new ForegroundColorSpan(colorId), 0, spannable.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    Log.d(TAG,spannable.toString());
    return spannable;
}