A helper class to construct and modify a SpannableString which uses the Factory design pattern
package com.example.util;
import android.content.Context;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextPaint;
import android.text.style.ClickableSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.StyleSpan;
import android.view.View;
import com.example.R;
import java.io.Serializable;
/**
* Created by qtyq on 27/04/15.
*/
public class SpannableBuilder {
private SpannableString mSpanStr;
public static SpannableBuilder init(String s) {
SpannableBuilder builder = new SpannableBuilder();
builder.mSpanStr = new SpannableString(s);
return builder;
}
public SpannableBuilder makeBold(String ss) {
if (mSpanStr == null)
mSpanStr = new SpannableString(ss);
int index = mSpanStr.toString().indexOf(ss);
if (index != -1) {
mSpanStr.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), index, index + ss.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
return this;
}
public SpannableBuilder setSpan(String ss, Object o) {
if (mSpanStr == null)
mSpanStr = new SpannableString(ss);
int index = mSpanStr.toString().indexOf(ss);
if (index != -1) {
mSpanStr.setSpan(o, index, index + ss.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
return this;
}
public SpannableBuilder setColor(String ss, int color) {
if (mSpanStr == null)
mSpanStr = new SpannableString(ss);
int index = mSpanStr.toString().indexOf(ss);
if (index != -1) {
mSpanStr.setSpan(new ForegroundColorSpan(color), index, index + ss.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
return this;
}
public SpannableBuilder makeLink(final Context context, String span, final Serializable object) {
int index = mSpanStr.toString().indexOf(span);
if (index == -1) {
return this;
}
ClickableSpan clickableSpan = new ClickableSpan() {
@Override
public void onClick(View view) {
//do something with the object
}
@Override
public void updateDrawState(final TextPaint textPaint) {
textPaint.setColor(context.getResources().getColor(R.color.dark_grey));
}
};
setSpan(span, clickableSpan);
makeBold(span);
return this;
}
public SpannableString create() {
return mSpanStr;
}
}