एक TextView

Question

का हिस्सा करने के लिए विभिन्न फ़ॉन्ट और रंग सेट करें मैं इस कोशिश की:

String s = "Some big string" 
SpannableStringBuilder sb = new SpannableStringBuilder(s); 
//normal font for 1st 9 chars 
sb.setSpan(robotoRegular, 0,9,Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
//bold font for rest of the chars 
sb.setSpan(robotoBold, 9,s.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
//also change color for rest of the chars 
sb.setSpan(new ForegroundColorSpan(Color.BLACK), 9,s.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
textView.setText(sb); 

लेकिन यह काम नहीं किया।

यह केवल नवीनतम सेटस्पैन लेता है, यानी .., पाठ रंग बदला जा रहा है लेकिन फ़ॉन्ट नहीं।

Answer 1

आप एक Typeface के बजाय एक TypefaceSpan उपयोग करना होगा।

लेकिन चूंकि आप एक कस्टम टाइपफेस का उपयोग कर रहे हैं तो आपको TypefaceSpan का विस्तार करने की आवश्यकता है।

यह answer देखें और CustomTypefaceSpan कक्षा बनाएं।

Typeface robotoRegular = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Regular.ttf"); 
Typeface robotoBold = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Bold.ttf"); 

TypefaceSpan robotoRegularSpan = new CustomTypefaceSpan("", robotoRegular); 
TypefaceSpan robotoBoldSpan = new CustomTypefaceSpan("", robotoBold); 

// normal font for 1st 9 chars 
sb.setSpan(robotoRegularSpan, 0, 9, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
// bold font for rest of the chars 
sb.setSpan(robotoBoldSpan, 9, s.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
// also change color for rest of the chars 
sb.setSpan(new ForegroundColorSpan(Color.BLUE), 9, s.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
textView.setText(sb); 

Answer 2

जांच के लिए इस कोड: -

protected void onDraw(Canvas canvas) { 

     Paint circlePaint = new Paint(); 
     Typeface mType = Typeface.create(Typeface.SANS_SERIF, Typeface.ITALIC); 
     circlePaint.setTextSize(25); 
     circlePaint.setColor(Color.RED); 
     circlePaint.setTypeface(mType); 
     canvas.drawText("Default Typeface", 50, 100, circlePaint); 
     // 
     circlePaint.setFlags(Paint.UNDERLINE_TEXT_FLAG); 
     circlePaint.setColor(Color.YELLOW); 
     canvas.drawText("Underline Text Flag", 50, 120, circlePaint); 
     // 
     circlePaint.setFlags(Paint.STRIKE_THRU_TEXT_FLAG); 
     circlePaint.setColor(Color.GREEN); 
     canvas.drawText("Strike Thru Text Flag", 50, 140, circlePaint); 
     // 
     circlePaint.setFlags(Paint.ANTI_ALIAS_FLAG); 
     circlePaint.setColor(Color.WHITE); 
     canvas.drawText("Anti Alias Flag", 50, 160, circlePaint); 
     // 
     circlePaint.setFlags(Paint.DEV_KERN_TEXT_FLAG); 
     circlePaint.setColor(Color.WHITE); 
     canvas.drawText("Dev Kern Text Flag", 50, 180, circlePaint); 
     // 
     circlePaint.setFlags(Paint.FAKE_BOLD_TEXT_FLAG); 
     circlePaint.setColor(Color.CYAN); 
     canvas.drawText("Fake Bold Text Flag", 50, 200, circlePaint); 
    } 

Answer 3

peaple ने इस के लिए utils कक्षाएं बनाने के लिए पसंद करते हैं के लिए::

public static SpannableStringBuilder makeTextBold (Activity activity, String string, int fromCharIndex, int toCharIndex) { 
    return makeTextBold(activity, new SpannableStringBuilder(string), fromCharIndex, toCharIndex); 
} 

public static SpannableStringBuilder makeTextBold (Activity activity, SpannableStringBuilder string, int fromCharIndex, int toCharIndex) { 
    SpannableStringBuilder sb = new SpannableStringBuilder(string); 
    Typeface bold = Typeface.createFromAsset(activity.getAssets(), "fonts/NexaBold.ttf"); 
    TypefaceSpan robotoBoldSpan = new CustomTypefaceSpan("", bold); 
    sb.setSpan(robotoBoldSpan, fromCharIndex, toCharIndex, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
    return sb; 
} 

public static SpannableStringBuilder colorText (int resourceId, String string, Activity activity, int fromCharIndex, int toCharIndex) { 
    return colorText(resourceId, new SpannableStringBuilder(string), activity, fromCharIndex, toCharIndex); 
} 

public static SpannableStringBuilder colorText (int resourceId, SpannableStringBuilder sb, Activity activity, int fromCharIndex, int toCharIndex) { 
    sb.setSpan(new ForegroundColorSpan(activity.getResources().getColor(resourceId)), fromCharIndex, toCharIndex, Spannable.SPAN_INCLUSIVE_INCLUSIVE); 
    return sb; 
}