How to use android.text

private class URLSpanNoUnderline extends URLSpan {
   public URLSpanNoUnderline(String url) {
     super(url);
   }
   @Override public void updateDrawState(TextPaint ds) {
     super.updateDrawState(ds);
     ds.setUnderlineText(false);
   }
 }

  @Override
  public void updateDrawState(TextPaint drawState) {
    drawState.setColor(isPressed ? pressedTextColor : normalTextColor);
    drawState.bgColor = isPressed ? pressedBackgroundColor : 0;
    drawState.setUnderlineText(!isPressed);
  }
}

  @Override
  public void updateDrawState(TextPaint ds) {
    ds.setColor(color);
  }
}

/**
 * Encode HTML
 *
 * @param html
 * @param imageGetter
 * @return html
 */
public static CharSequence encode(final String html,
                 final ImageGetter imageGetter) {
  if (TextUtils.isEmpty(html)) {
    return "";
  }
  return Html.fromHtml(html, imageGetter, TAG_HANDLER);
}

 TextView textView = (TextView) view.findViewById(R.id.textview);
SpannableString content = new SpannableString("Content");
content.setSpan(new UnderlineSpan(), 0, content.length(), 0);
textView.setText(content);

 SpannableString ss = new SpannableString("Android is a Software stack");
ClickableSpan clickableSpan = new ClickableSpan() {
  @Override
  public void onClick(View textView) {
    startActivity(new Intent(MyActivity.this, NextActivity.class));
  }
  @Override
  public void updateDrawState(TextPaint ds) {
      super.updateDrawState(ds);
      ds.setUnderlineText(false);
    }
};
ss.setSpan(clickableSpan, 22, 27, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

TextView textView = (TextView) findViewById(R.id.hello);
textView.setText(ss);
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setHighlightColor(Color.TRANSPARENT);

public static void replaceUnderlineSpans(SpannableStringBuilder builder, Resources resources) {
 UnderlineSpan[] underlineSpans = builder.getSpans(0, builder.length(), UnderlineSpan.class);
 for (UnderlineSpan span : underlineSpans) {
  int start = builder.getSpanStart(span);
  int end = builder.getSpanEnd(span);
  builder.removeSpan(span);
  builder.setSpan(new SquigglySpan(resources), start, end, 0);
 }
}

 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);

private static void setSpan(SpannableStringBuilder builder, Object what) {
  builder.setSpan(what, 0, builder.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}

public void setTitle(CharSequence title) {
  this.title = title;
  this.displayText = new SpannableStringBuilder(title);
}

@TargetApi(Build.VERSION_CODES.M)
private void createLayoutM(int width, float lineSpacingAdd) {
  layout = StaticLayout.Builder.obtain(displayText, 0, displayText.length(), paint,
      width - titleInsetStart - titleInsetEnd)
      .setLineSpacing(lineSpacingAdd, 1f)
      .setMaxLines(maxLines)
      .setEllipsize(TextUtils.TruncateAt.END)
      .setBreakStrategy(BREAK_STRATEGY)
      .build();
  lineCount = layout.getLineCount();
}

/**
 * Sets the size of the center text of the PieChart in pixels.
 *
 * @param sizePixels
 */
public void setCenterTextSizePixels(float sizePixels) {
  ((PieChartRenderer) mRenderer).getPaintCenterText().setTextSize(sizePixels);
}

public void backspace() {
 int length = captionStringBuilder.length();
 if (length > 0) {
  captionStringBuilder.delete(length - 1, length);
 }
}

/**
 * sets the typeface for the center-text paint
 *
 * @param t
 */
public void setCenterTextTypeface(Typeface t) {
  ((PieChartRenderer) mRenderer).getPaintCenterText().setTypeface(t);
}

@Override
public int getTextColor() {
  return paint.getColor();
}

public Typeface getTypeface() {
  return mTextPaint.getTypeface();
}

edittext.setFilters(new InputFilter[] {new InputFilter.AllCaps()});

@Override
public float getLetterSpacing() {
  return paint.getLetterSpacing();
}

private static void setSpanWithPrependedNewline(SpannableStringBuilder builder, Object what) {
  builder.setSpan(what, 1, builder.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}

/**
 * Sets the color of the center text of the PieChart.
 *
 * @param color
 */
public void setCenterTextColor(int color) {
  ((PieChartRenderer) mRenderer).getPaintCenterText().setColor(color);
}