protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  float x_draw = getPaddingLeft();
  float y_draw = getPaddingTop() + dfPaint.getTextSize();
  for (ExtendText t : extendTexts) {
   Paint paint = t.isHighlight ? hlPaint : dfPaint;
   float textLen = paint.measureText(t.textUnit);
   if (x_draw + textLen > width) {
    x_draw = getPaddingLeft();
    y_draw += paint.getTextSize();
   }
   canvas.drawText(t.textUnit, x_draw, y_draw, paint);
   x_draw += textLen;
  }
 }

public class MainActivity extends Activity {
 private final static String TEXT = "";
 private final static String[] HIGHLIGHT = {};

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  HighLightTextView hlTv = (HighLightTextView) findViewById(R.id.hlTv);
  hlTv.setDisplayedText(TEXT, Arrays.asList(HIGHLIGHT));
  hlTv.setDefaultColor(Color.BLACK);
  hlTv.setHighlightColor(ContextCompat.getColor(this, R.color.colorPrimary));

 }
}

<com.jy.highlighttextview.HighLightTextView
 android:id="@+id/hlTv"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:padding="5dp"
 app:textSize="16sp" />

app:defaultColor="@color/colorPrimary"
app:highlightColor="@color/colorAccent"
app:text="@string/app_name"
app:textSize="16sp"