Android : TextView.setText ()를 사용하여 문자열의 일부를 색칠합니까?

Android : TextView.setText ()를 사용하여 문자열의 일부를 색칠합니까?

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.setText ( "") 메서드를 통해 TextView보기의 텍스트를 변경하는 동시에 텍스트의 일부를 채색 (또는 굵게, 기울임 꼴, 투명 등)하고 나머지는 변경하지 않으려 고합니다. 예를 들면 :

title.setText("Your big island <b>ADVENTURE!</b>";

위의 코드가 정확하지 않다는 것을 알고 있지만 달성하고 싶은 것을 설명하는 데 도움이됩니다. 어떻게해야합니까?

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스팬을 사용 합니다.

예:

final SpannableStringBuilder sb = new SpannableStringBuilder("your text here");

// Span to set text color to some RGB value
final ForegroundColorSpan fcs = new ForegroundColorSpan(Color.rgb(158, 158, 158)); 

// Span to make text bold
final StyleSpan bss = new StyleSpan(android.graphics.Typeface.BOLD); 

// Set the text color for first 4 characters
sb.setSpan(fcs, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 

// make them also bold
sb.setSpan(bss, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 

yourTextView.setText(sb);

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title.setText(Html.fromHtml("Your big island <b>ADVENTURE!</b>")); 

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이 정보가 도움이 되었기를 바랍니다 (다국어 지원).

<string name="test_string" ><![CDATA[<font color="%1$s"><b>Test/b></font>]]> String</string>

그리고 자바 코드에서 다음을 수행 할 수 있습니다.

int color = context.getResources().getColor(android.R.color.holo_blue_light);
String string = context.getString(R.string.test_string, color);
textView.setText(Html.fromHtml(string));

이렇게하면 "테스트"부분 만 색상이 지정되고 굵게 표시됩니다.

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다음은 단어의 모든 발생 (대소 문자 구분 안 함)을 찾아 빨간색으로 표시하는 예입니다.

String notes = "aaa AAA xAaax abc aaA xxx";
SpannableStringBuilder sb = new SpannableStringBuilder(notes);
Pattern p = Pattern.compile("aaa", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(notes);
while (m.find()){
    //String word = m.group();
    //String word1 = notes.substring(m.start(), m.end());

    sb.setSpan(new ForegroundColorSpan(Color.rgb(255, 0, 0)), m.start(), m.end(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
editText.setText(sb);

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a Spannable를 사용하여 텍스트의 특정 부분에 특정 측면을 제공 할 수 있습니다 . 원하시면 예를 찾아 볼 수 있습니다.

Ah, from right here on stackoverflow.

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);

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If you want to use HTML, you need to use TextView.setText(Html.fromHtml(String htmlString))

If you want to do that often / repeatedly, you may have a look at a class (SpannableBuilder) I wrote, as Html.fromHtml() is not very efficient (it is using a big xml parsing machinery inside). It is described in this blog posting.

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If you are using Kotlin you can do the following using the android-ktx library

val title = SpannableStringBuilder()
        .append("Your big island ")
        .bold { append("ADVENTURE") } 

title.text = s 

The bold is an extension function on SpannableStringBuilder. You can see the documentation here for a list of operations you can use.

Another example:

val ssb = SpannableStringBuilder()
            .color(green, { append("Green text ") })
            .append("Normal text ")
            .scale(0.5, { append("Text at half size " })
            .backgroundColor(green, { append("Background green") })

Where green is a resolved RGB color.

It is even possible to nest spans so you end up with something like an embedded DSL:

bold { underline { italic { append("Bold and underlined") } } }

You will need the following in your app module level build.gradle for it to work:

repositories {
    google()
}

dependencies {
    implementation 'androidx.core:core-ktx:0.3'
}

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You can concatenate two or more Spans. This way is easier to color dynamic text using length value.

SpannableStringBuilder span1 = new SpannableStringBuilder("Android");
ForegroundColorSpan color1=new ForegroundColorSpan(getResources().getColor(R.color.colorPrimary));
span1.setSpan(color1, 0, span1.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);

SpannableStringBuilder span2 = new SpannableStringBuilder("Love");
ForegroundColorSpan color2=new ForegroundColorSpan(getResources().getColor(R.color.colorSecondary));
span2.setSpan(color2, 0, span2.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);

Spanned concatenated=(Spanned) TextUtils.concat(span1," => ",span2);

SpannableStringBuilder result = new SpannableStringBuilder(concatenated);

TextView tv = (TextView) rootView.findViewById(R.id.my_texview);
tv.setText(result, TextView.BufferType.SPANNABLE);

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Use this code its helpful

TextView txtTest = (TextView) findViewById(R.id.txtTest);
txtTest.setText(Html.fromHtml("This is <font color="#ff4343">Red</font> Color!"));

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            String str1 = "If I forget my promise to ";
            String penalty = "Eat breakfast every morning,";
            String str2 = " then I ";
            String promise = "lose my favorite toy";
           

            String strb = "<u><b><font color='#081137'>"+ penalty +",</font></b></u>";
            String strc = "<u><b><font color='#081137'>"+ promise + "</font></b></u>";
            String strd = str1 +strb+ str2 + strc;
           tv_notification.setText(Html.fromHtml(strd));

or use this code:

    SpannableStringBuilder builder = new SpannableStringBuilder();
            SpannableString text1 = new SpannableString(str1);
            text1.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.silver)), 0, str1.length() - 1, 0);
            builder.append(text1);

            SpannableString text2 = new SpannableString(penalty);
            text2.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.midnight)), 0, penalty.length(), 0);
            text2.setSpan(new UnderlineSpan(), 0, penalty.length(), 0);
            builder.append(text2);

            SpannableString text3 = new SpannableString(str2);
            text3.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.silver)),0, str2.length(), 0);
            builder.append(text3);


            SpannableString text4 = new SpannableString(promise);
            text4.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.midnight)), 0, promise.length(), 0);
            text4.setSpan(new UnderlineSpan(),0, promise.length(), 0);
            builder.append(text4);

          tv_notification.setText(builder);

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I like to use SpannableStringBuilder by appending the different spans one by one, rather than calling setSpan by calculating the string lengths

as: (Kotlin code)

val amountSpannableString = SpannableString("₹$amount").apply {
  // text color
  setSpan(ForegroundColorSpan("#FD0025".parseColor()), 0, length, 0)
  // text size
  setSpan(AbsoluteSizeSpan(AMOUNT_SIZE_IN_SP.spToPx(context)), 0, length, 0)
  // font medium
  setSpan(TypefaceSpan(context.getString(R.string.font_roboto_medium)), 0, length, 0)
}

val spannable: Spannable = SpannableStringBuilder().apply {
  // append the different spans one by one
  // rather than calling setSpan by calculating the string lengths
  append(TEXT_BEFORE_AMOUNT)
  append(amountSpannableString)
  append(TEXT_AFTER_AMOUNT)
}

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public static void setColorForPath(Spannable spannable, String[] paths, int color) {
    for (int i = 0; i < paths.length; i++) {
        int indexOfPath = spannable.toString().indexOf(paths[i]);
        if (indexOfPath == -1) {
            continue;
        }
        spannable.setSpan(new ForegroundColorSpan(color), indexOfPath,
                indexOfPath + paths[i].length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    }
}

Using

Spannable spannable = new SpannableString("Your big island ADVENTURE");
Utils.setColorForPath(spannable, new String[] { "big", "ADVENTURE" }, Color.BLUE);

textView.setText(spannable);

참고URL : https://stackoverflow.com/questions/4897349/android-coloring-part-of-a-string-using-textview-settext