android – StyleSpan不适用于TextView中的SpannableString

概述我想使特定的子串的字体BOLD. 这是我的代码： String fullName = "some name"; String searchFreeText = "some"; SpannableString wordToSpan = new SpannableString(fullName);Typeface helvticaBoldTypeface = Typeface.createFr 我想使特定的子串的字体BolD.

这是我的代码：

String fullname = "some name"; String searchFreeText = "some"; SpannableString wordToSpan = new SpannableString(fullname);Typeface helvticaBoldTypeface = Typeface.createFromAsset(context.getAssets(),Font_HELVETICA_BolD);int startposition = fullname.tolowerCase().indexOf(searchFreeText.tolowerCase());StyleSpan bold = new StyleSpan(helvticaBoldTypeface.getStyle());                    wordToSpan.setSpan(bold,startposition,startposition + searchFreeText.length(),0); firstlineTextVIEw.setText(wordToSpan,BufferType.SPANNABLE);

文字仍然不粗体.
如果我将代码更改为：

firstlineTextVIEw.setTypeface(helvticaBoldTypeface,Typeface.BolD);

并删除

StyleSpan bold = new StyleSpan(helvticaBoldTypeface.getStyle());                    wordToSpan.setSpan(bold,0);

然后所有的文字都是粗体,这没关系,但不是我想要的.
我只需要使用大胆的特定文本.
我希望看到这个：一些名字.

问题是什么？
谢谢

解决方法

I noticed one thing:
You are using Font_HELVETICA_BolD (Which is already bold so nothing special gonna happen to your text cuz it is already bold just change it to some regular Font)

You can find some fonts here

For making specific text bold and colored you can try the following code

SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(textToBeSpanneDWithBold);StyleSpan styleSpan = new StyleSpan(androID.graphics.Typeface.BolD);spannableStringBuilder.setSpan(styleSpan,positionOfSearchedText,positionOfSearchedText + searchTextToBeBold.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE);//Use this if you wanna make specific text boldSpannableString uncolouredSpan = new SpannableString(spannableStringBuilder);textVIEwToBeBoldSpanned.setText(uncolouredSpan);//Use this if you wanna make specific text bold plus colouredSpannableString coloredSpan = giveMecoloredSpan(        new SpannableString(spannableStringBuilder),ContextCompat.getcolor(getContext(),R.color.your_specific_colour));textVIEwToBeBoldSpannedAndColoured.setText(coloredSpan);public static SpannableString giveMecoloredSpan(SpannableString spannableString,int color) {    spannableString.setSpan(            new ForegroundcolorSpan(color),spannableString.length(),0);    return spannableString;}

If Still somehow you are stuck with your problem for that i have created a repo on Github 07001

活动代码来自我的回购

CustomTextVIEwActivity.java

import androID.support.v4.content.ContextCompat;import androID.support.v7.app.AppCompatActivity;import androID.os.Bundle;import androID.text.Spannable;import androID.text.SpannableString;import androID.text.SpannableStringBuilder;import androID.text.style.ForegroundcolorSpan;import androID.text.style.StyleSpan;import androID.vIEw.VIEw;import androID.Widget.button;public class CustomTextVIEwActivity extends AppCompatActivity implements VIEw.OnClickListener {    public static final String MAKE_THIS_SPECIFIC_PART_colorED = "MakeThisspecificPartcolored";    public static final String MAKE_THIS_SPECIFIC_PART_BolD = "MakeThisspecificPartBold";    public static final String MAKE_THIS_SPECIFIC_PART_BolD_AND_colorED = "MakeThisspecificPartBoldAndcolored";    CustomTextVIEw customTextVIEw1,customTextVIEw2,customTextVIEw3;    button changetoRoboto,changetoCalculus,makeSpecificTextcolored,makeSpecificTextBold,makeSpecificTextBoldAndcolored;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_text_vIEw);        customTextVIEw1 = (CustomTextVIEw) findVIEwByID(R.ID.customTextVIEw1);        customTextVIEw2 = (CustomTextVIEw) findVIEwByID(R.ID.customTextVIEw2);        customTextVIEw3 = (CustomTextVIEw) findVIEwByID(R.ID.customTextVIEw3);        changetoRoboto = (button) findVIEwByID(R.ID.change_to_roboto);        changetoCalculus = (button) findVIEwByID(R.ID.change_to_calculus);        makeSpecificTextBold = (button) findVIEwByID(R.ID.make_specific_text_bold);        makeSpecificTextcolored = (button) findVIEwByID(R.ID.make_text_colored);        makeSpecificTextBoldAndcolored = (button) findVIEwByID(R.ID.make_text_bold_and_colored);        changetoRoboto.setonClickListener(this);        changetoCalculus.setonClickListener(this);        makeSpecificTextcolored.setonClickListener(this);        makeSpecificTextBold.setonClickListener(this);        makeSpecificTextBoldAndcolored.setonClickListener(this);    }    @OverrIDe    public voID onClick(VIEw v) {        switch (v.getID()) {            case R.ID.change_to_roboto:                customTextVIEw1.setFont(getString(R.string.Font_roboto_regular));                customTextVIEw2.setFont(getString(R.string.Font_roboto_regular));                customTextVIEw3.setFont(getString(R.string.Font_roboto_regular));                break;            case R.ID.change_to_calculus:                customTextVIEw1.setFont(getString(R.string.Font_calculus_sans));                customTextVIEw2.setFont(getString(R.string.Font_calculus_sans));                customTextVIEw3.setFont(getString(R.string.Font_calculus_sans));                break;            case R.ID.make_text_colored:                makeTextColoured();                break;            case R.ID.make_specific_text_bold:                makeSpecificTextBold();                break;            case R.ID.make_text_bold_and_colored:                makeTextBoldAndcolored();                break;        }    }    public static SpannableString giveMecoloredSpan(SpannableString spannableString,int color) {        spannableString.setSpan(                new ForegroundcolorSpan(color),0);        return spannableString;    }    private voID makeTextColoured() {        String textToBeSpanned = customTextVIEw1.getText().toString();        SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(textToBeSpanned);        int positionOfSearchedText = textToBeSpanned.indexOf(MAKE_THIS_SPECIFIC_PART_colorED);        SpannableString coloredSpan = giveMecoloredSpan(                new SpannableString(textToBeSpanned),ContextCompat.getcolor(getApplicationContext(),androID.R.color.holo_red_dark));        customTextVIEw1.setText(coloredSpan);    }    private voID makeSpecificTextBold() {        String textToBeSpanned = customTextVIEw2.getText().toString();        SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(textToBeSpanned);        int positionOfSearchedText = textToBeSpanned.indexOf(MAKE_THIS_SPECIFIC_PART_BolD);        StyleSpan styleSpan = new StyleSpan(androID.graphics.Typeface.BolD);        spannableStringBuilder.setSpan(styleSpan,positionOfSearchedText + MAKE_THIS_SPECIFIC_PART_BolD.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE);        customTextVIEw2.setText(spannableStringBuilder);    }    private voID makeTextBoldAndcolored() {        String textToBeSpanned = customTextVIEw3.getText().toString();        SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(textToBeSpanned);        int positionOfSearchedText = textToBeSpanned.indexOf(MAKE_THIS_SPECIFIC_PART_BolD_AND_colorED);        StyleSpan styleSpan = new StyleSpan(androID.graphics.Typeface.BolD);        spannableStringBuilder.setSpan(styleSpan,positionOfSearchedText + MAKE_THIS_SPECIFIC_PART_BolD_AND_colorED.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE);        SpannableString coloredBoldSpan = giveMecoloredSpan(                new SpannableString(spannableStringBuilder),androID.R.color.holo_red_dark));        customTextVIEw3.setText(coloredBoldSpan);    }}

actvity_text_vIEw.xml

<?xml version="1.0" enCoding="utf-8"?><ScrollVIEw xmlns:androID="http://schemas.androID.com/apk/res/androID"    xmlns:app="http://schemas.androID.com/apk/res-auto"    xmlns:tools="http://schemas.androID.com/tools"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"    androID:background="@androID:color/white">    <linearLayout        androID:layout_wIDth="match_parent"        androID:layout_height="wrap_content"        androID:gravity="center"        androID:orIEntation="vertical"        tools:context="com.harsh.customtextvIEw.CustomTextVIEwActivity">        <com.harsh.customtextvIEw.CustomTextVIEw            androID:ID="@+ID/customTextVIEw1"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:gravity="center"            androID:text="@string/roboto_regular"            androID:textcolor="@color/colorPrimary"            androID:textSize="18sp"            app:Font="@string/Font_roboto_regular" />        <com.harsh.customtextvIEw.CustomTextVIEw            androID:ID="@+ID/customTextVIEw2"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:gravity="center"            androID:text="@string/themed_text"            androID:textcolor="@color/colorPrimary"            androID:textSize="18sp"            app:theme="@style/roboto_theme" />        <com.harsh.customtextvIEw.CustomTextVIEw            androID:ID="@+ID/customTextVIEw3"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:gravity="center"            androID:text="@string/calculus_sans"            androID:textcolor="@color/colorPrimary"            androID:textSize="18sp"            app:Font="@string/Font_calculus_sans" />        <button            androID:ID="@+ID/change_to_roboto"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:text="Change to Roboto" />        <button            androID:ID="@+ID/change_to_calculus"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:text="Change to Calculus" />        <button            androID:ID="@+ID/make_text_colored"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:text="Make text coloured" />        <button            androID:ID="@+ID/make_specific_text_bold"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:text="Make specific text bold" />        <button            androID:ID="@+ID/make_text_bold_and_colored"            androID:layout_wIDth="wrap_content"            androID:layout_height="wrap_content"            androID:layout_margintop="16dp"            androID:text="Make text bold and colored" />    </linearLayout></ScrollVIEw>

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