How to use

android.text.SpannableStringBuilder

constructor

 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);

SpannableStringBuilder builder = new SpannableStringBuilder();
 builder.append("My string. I ")
     .append(" ", new ImageSpan(getActivity(), R.drawable.ic_action_heart), 0)
     .append(" Cree by Dexode");
 textView.setText(builder);

  private CharSequence getFormattedMessage() {
    final String prefix = "Formatted ";
    final String highlight = "bold italic";
    final String suffix = " text";
    SpannableStringBuilder ssb = new SpannableStringBuilder(prefix).append(highlight).append(suffix);
    int prefixLen = prefix.length();
    ssb.setSpan(new StyleSpan(BOLD_ITALIC),
        prefixLen, prefixLen + highlight.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    return ssb;
  }
}

private SpannableStringBuilder createSpannable(Drawable drawable) {
  String text = "bitmap";
  SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text);
  ImageSpan span = new ImageSpan(drawable);//ImageSpan.ALIGN_BOTTOM);
  spannableStringBuilder.setSpan(span, 0, text.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
  spannableStringBuilder.append("图文混排");
  spannableStringBuilder.setSpan(new BackgroundColorSpan(Color.parseColor("#8A2233B1")), 0, spannableStringBuilder.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
  return spannableStringBuilder;
}

 final SpannableStringBuilder sb = new SpannableStringBuilder("HELLOO");

final StyleSpan bss = new StyleSpan(android.graphics.Typeface.BOLD); // Span to make text bold
final StyleSpan iss = new StyleSpan(android.graphics.Typeface.ITALIC); //Span to make text italic
sb.setSpan(bss, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE); // make first 4 characters Bold 
sb.setSpan(iss, 4, 6, Spannable.SPAN_INCLUSIVE_INCLUSIVE); // make last 2 characters Italic

etx.setText(sb);

private CharSequence buildMessageSummary(String sender, String subject) {
  if (sender == null) {
    return subject;
  }
  SpannableStringBuilder summary = new SpannableStringBuilder();
  summary.append(sender);
  summary.append(" ");
  summary.append(subject);
  return summary;
}

private SpannableStringBuilder createSpannable(Drawable drawable) {
  String text = "bitmap";
  SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text);
  ImageSpan span = new ImageSpan(drawable);//ImageSpan.ALIGN_BOTTOM);
  spannableStringBuilder.setSpan(span, 0, text.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
  spannableStringBuilder.append("图文混排");
  spannableStringBuilder.setSpan(new BackgroundColorSpan(Color.parseColor("#8A2233B1")), 0, spannableStringBuilder.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
  return spannableStringBuilder;
}

final SpannableStringBuilder str = new SpannableStringBuilder("Your awesome text");
 str.setSpan(new android.text.style.StyleSpan(android.graphics.Typeface.BOLD), INT_START, INT_END, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 TextView tv=new TextView(context);
 tv.setText(str);

 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);

private SpannableStringBuilder createSpannable(Drawable drawable) {
  String text = "bitmap";
  SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text);
  ImageSpan span = new ImageSpan(drawable);//ImageSpan.ALIGN_BOTTOM);
  spannableStringBuilder.setSpan(span, 0, text.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
  spannableStringBuilder.append("图文混排");
  spannableStringBuilder.setSpan(new BackgroundColorSpan(Color.parseColor("#8A2233B1")), 0, spannableStringBuilder.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
  return spannableStringBuilder;
}

TextView txt = (TextView) findViewById(R.id.custom_fonts);  
   txt.setTextSize(30);
   Typeface font = Typeface.createFromAsset(getAssets(), "Akshar.ttf");
   Typeface font2 = Typeface.createFromAsset(getAssets(), "bangla.ttf");   
   SpannableStringBuilder SS = new SpannableStringBuilder("আমারநல்வரவு");
   SS.setSpan (new CustomTypefaceSpan("", font2), 0, 4,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
   SS.setSpan (new CustomTypefaceSpan("", font), 4, 11,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
   txt.setText(SS);

 /**
  * {@inheritDoc}
  */
 @Override
 public CharSequence format(CalendarDay day) {
  return new SpannableStringBuilder()
    .append(monthLabels[day.getMonth() - 1])
    .append(" ")
    .append(String.valueOf(day.getYear()));
 }
}

 SpannableStringBuilder longDescription = new SpannableStringBuilder();
longDescription.append("First Part Not Bold ");
int start = longDescription.length();
longDescription.append("BOLD");
longDescription.setSpan(new ForegroundColorSpan(0xFFCC5500), start, longDescription.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
longDescription.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), start, longDescription.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
longDescription.append(" rest not bold");

 int ecolor = xxxx; // whatever color you want
String estring = "Input is incorrect";
ForegroundColorSpan fgcspan = new ForegroundColorSpan(ecolor);
SpannableStringBuilder ssbuilder = new SpannableStringBuilder(estring);
ssbuilder.setSpan(fgcspan, 0, estring.length(), 0);
myedittext.setError(ssbuilder);

public static CharSequence toFriendly(Address[] addresses, Contacts contacts) {
  if (addresses == null) {
    return null;
  }
  if (addresses.length >= TOO_MANY_ADDRESSES) {
    // Don't look up contacts if the number of addresses is very high.
    contacts = null;
  }
  SpannableStringBuilder sb = new SpannableStringBuilder();
  for (int i = 0; i < addresses.length; i++) {
    sb.append(toFriendly(addresses[i], contacts));
    if (i < addresses.length - 1) {
      sb.append(',');
    }
  }
  return sb;
}

SpannableStringBuilder builder = new SpannableStringBuilder();
 builder.append("My string. I ").append(" ");
 builder.setSpan(new ImageSpan(getActivity(), R.drawable.ic_action_heart),
     builder.length() - 1, builder.length(), 0);
 builder.append(" Cree by Dexode");
 textView.setText(builder);

TextView txt = (TextView) findViewById(R.id.custom_fonts);  
   txt.setTextSize(30);
   Typeface font = Typeface.createFromAsset(getAssets(), "Akshar.ttf");
   Typeface font2 = Typeface.createFromAsset(getAssets(), "bangla.ttf");   
   SpannableStringBuilder SS = new SpannableStringBuilder("আমারநல்வரவு");
   SS.setSpan (new CustomTypefaceSpan("", font2), 0, 4,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
   SS.setSpan (new CustomTypefaceSpan("", font), 4, 11,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
   txt.setText(SS);

 firstNormalCue = cue;
} else if (normalCueTextBuilder == null) {
 normalCueTextBuilder = new SpannableStringBuilder();
 normalCueTextBuilder.append(firstNormalCue.text).append("\n").append(cue.text);
} else {
 normalCueTextBuilder.append("\n").append(cue.text);

SpannableStringBuilder stringBuilder = new SpannableStringBuilder();
 String between = "";
 for (String tag : eventListing.getTags()) {
   stringBuilder.append(between);
   if (between.length() == 0) between = "  ";
   String thisTag = "  "+tag+"  ";
   stringBuilder.append(thisTag);
   stringBuilder.setSpan(new RoundedBackgroundSpan(this), stringBuilder.length() - thisTag.length(), stringBuilder.length() - thisTag.length() + thisTag.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
   //stringBuilder.setSpan(new BackgroundColorSpan(getResources().getColor(R.color.gray)), stringBuilder.length() - thisTag.length(), stringBuilder.length() - thisTag.length() + thisTag.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
 }
 TextView tv = new TextView(this);
 tv.setText(stringBuilder);

 Drawable myDrawable; //Drawable you want to display

@Override
public CharSequence getPageTitle(int position) {

  SpannableStringBuilder sb = new SpannableStringBuilder(" Page #"+ position); // space added before text for convenience

  myDrawable.setBounds(0, 0, myDrawable.getIntrinsicWidth(), myDrawable.getIntrinsicHeight()); 
  ImageSpan span = new ImageSpan(myDrawable, ImageSpan.ALIGN_BASELINE); 
  sb.setSpan(span, 0, 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 

  return sb;
}