poner - ¿Es posible cambiar el color del texto en una cadena a varios colores en Java?

como poner color en java netbeans

Question

Lo que quiero decir es, ¿es posible cambiar el texto "Este texto es azul" al color azul en una sola cadena? Debe haber una forma...

<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

Html.fromHtml(String) está en desuso en Android N

Para admitir la última versión de Android, algo así

 val colorText = ("Some Normal Text/n" 
                    + "<font color=/"#FFA500/"><bold> Orange Text </bold></font>"
                    + "More Normal text")

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            venueAddressValue.setText(Html.fromHtml(colorText, Html.FROM_HTML_MODE_LEGACY));
        } else {
            venueAddressValue.setText(Html.fromHtml(colorText));
        }

Answer 2

Creé una clase como esta:

import android.text.SpannableStringBuilder;
import android.text.style.CharacterStyle;

public class StyleableSpannableStringBuilder extends SpannableStringBuilder {
    public StyleableSpannableStringBuilder appendWithStyle(CharacterStyle c, CharSequence text) {
        super.append(text);
        int startPos = length() - text.length();
        setSpan(c, startPos, length(), 0);
        return this;
    }

    public StyleableSpannableStringBuilder appendWithStyle(CharacterStyle [] c, CharSequence text) {
        super.append(text);
        int startPos = length() - text.length();
        for (CharacterStyle c1 : c)
            setSpan(c1, startPos, length(), 0);         
        return this;
    }       
}

Esto me permite hacer cosas como esta:

private void buildTickerItem(DelayedQuoteServiceObject o)
{   
    Double lastPrice = Double.parseDouble(o.getValue("LastPrice"));
    Double dayChange = Double.parseDouble(o.getValue("DayChange"));
    Double percentChange = Double.parseDouble(o.getValue("PercentDayChange")) / 100;

    if (o.isIndex() == true)
    {

        tickerTapeData.appendWithStyle(new StyleSpan(Typeface.BOLD),o.getDisplayName());            
        tickerTapeData.append(" "+ indexFormat.format(lastPrice) + " (");

        if (dayChange >= 0)
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), indexFormat.format(dayChange));        
        else
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), indexFormat.format(dayChange));
    }
    else
    {
        tickerTapeData.appendWithStyle(new StyleSpan(Typeface.BOLD), o.ticker);

        tickerTapeData.append("@"+ dollarFormat.format(lastPrice) + " (");              

        if (dayChange >= 0)
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), dollarFormat.format(dayChange));       
        else
            tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), dollarFormat.format(dayChange));


    }

    tickerTapeData.append("/");


    if (dayChange >= 0)
        tickerTapeData.appendWithStyle(new ForegroundColorSpan(Colours.getTickerPositive()), percentFormat.format(percentChange));      
    else
        tickerTapeData.appendWithStyle(new ForegroundColorSpan(Color.RED), percentFormat.format(percentChange));

    tickerTapeData.append(")  ");       
}

Para crear una cinta de teletipo Funciona muy bien y mantiene el código limpio.

Answer 3

Estoy en uso para un cambio de estrella si el servicio "Adelante"

String c = "*" + getResources().getString(R.string.rupee) + str_pay_at_store;
SpannableString spannable2 = new SpannableString(c);
spannable2.setSpan(new ForegroundColorSpan(Color.RED), 0, 1, 
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv_payatstore.setText(spannable2);

Puedes ver así

Answer 4

Prueba esto..

TextView update= (TextView) dialog.findViewById(R.id.address);
String colorText= "Driver is nearby "
                + "<font color=/"#E72A02/"><bold>"
                + "43, KR Rd, Tata Silk Farm, Jayanagar"
                + "</bold></font>"
                + " and he is "
                + "<font color=/"#B92000/"><bold>"
                + "11 km"
                + "</bold></font>"
                + " & "
                + "<font color=/"#B92000/"><bold>"
                + "20 mins"
                + "</bold></font>"
                + " away from your current location.";

        update.setText(Html.fromHtml(colorText));

Y el resultado será así.

Answer 5

Puedes probar esto: En un fragmento:

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

View rootView = inflater.inflate(
                R.layout.shipment_accepted_fragment,
                container, false);

        String email = "([email protected])";

        TextView shipment_email = (TextView) rootView
                .findViewById(R.id.textview);
        String text_shipment_email = "Hello"
                + " <font color=''"
                + getResources().getColor(R.color.green_color) + "''>" + email
                + "</font>"
                + "Bye";
        shipment_email.setText(Html.fromHtml(text_shipment_email),
                TextView.BufferType.SPANNABLE);
}

Answer 6

Si es posible. Para esto necesitas usar SpannableString y SpannableString .

Esto debería verse más o menos así:

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);

Answer 7

Una forma sencilla de hacerlo es usar HTML y establecer el texto en TextView programación.

String text = "This text is white. <font color=/"blue/">This text is blue.</font>";
textView.setText(Html.fromHtml(text), BufferType.SPANNABLE);