Highlighted Textview With Colors When Coded / Sketchware | MskDev

Set Highlighter For an Textview

Blog : msk-dev.blogspot.com

!! IMPORTANT !!
Set The Highlighter First
& Set The Text in Textview
because The Color Change when the text has been Changed. Only.

sketchub project : https://project.sketchub.in/?id=3270

code in link : https://pastefy.ga/U16JGGPs

Code For Set Highlighter (TextView:view )
Code :
final String secondaryColor = "#678cb1";
final String primaryColor = "#86b55a";
final String numbersColor = "#f6c921";
final String quotesColor = "#ff1744";
final String commentsColor = "#9e9e9e";
final String charColor = "#ff5722";

final TextView regex1 = new TextView(this);
final TextView regex2 = new TextView(this);
final TextView regex3 = new TextView(this);
final TextView regex4 = new TextView(this);
final TextView regex5 = new TextView(this);
final TextView regex6 = new TextView(this);
final TextView regex7 = new TextView(this);
final TextView regex8 = new TextView(this);
final TextView regex9 = new TextView(this);
final TextView regex10 = new TextView(this);
final TextView regex11 = new TextView(this);

regex1.setText("\\b(out|print|println|valueOf|toString|concat|equals|for|while|switch|getText");

regex2.setText("|println|printf|print|out|parseInt|round|sqrt|charAt|compareTo|compareToIgnoreCase|concat|contains|contentEquals|equals|length|toLowerCase|trim|toUpperCase|toString|valueOf|substring|startsWith|split|replace|replaceAll|lastIndexOf|size)\\b");

regex3.setText("\\b(public|private|protected|void|switch|case|class|import|package|extends|Activity|TextView|EditText|LinearLayout|CharSequence|String|int|onCreate|ArrayList|float|if|else|static|Intent|Button|SharedPreferences");

regex4.setText("|abstract|assert|boolean|break|byte|case|catch|char|class|const|continue|default|do|double|else|enum|extends|final|finally|float|for|goto|if|implements|import|instanceof|interface|long|native|new|package|private|protected|");

regex5.setText("public|return|short|static|strictfp|super|switch|synchronized|this|throw|throws|transient|try|void|volatile|while|true|false|null)\\b");

regex6.setText("\\b([0-9]+)\\b");

regex7.setText("(\\w+)(\\()+");

regex8.setText("\\@\\s*(\\w+)");

regex9.setText("\"(.*?)\"|'(.*?)'");

regex10.setText("/\\*(?:.|[\\n\\r])*?\\*/|//.*");

regex11.setText("\\b(Uzuakoli|Amoji|Bright|Ndudirim|Ezinwanne|Lightworker|Isuochi|Abia|Ngodo)\\b");

_view.addTextChangedListener(new TextWatcher() {

ColorScheme keywords1 = new ColorScheme(java.util.regex.Pattern.compile(regex1.getText().toString().concat(regex2.getText().toString())), Color.parseColor(secondaryColor));

ColorScheme keywords2 = new ColorScheme(java.util.regex.Pattern.compile(regex3.getText().toString().concat(regex4.getText().toString().concat(regex5.getText().toString()))), Color.parseColor(primaryColor));

ColorScheme keywords3 = new ColorScheme(java.util.regex.Pattern.compile(regex6.getText().toString()), Color.parseColor(numbersColor));

ColorScheme keywords4 = new ColorScheme(java.util.regex.Pattern.compile(regex7.getText().toString()), Color.parseColor(secondaryColor));

ColorScheme keywords5 = new ColorScheme(java.util.regex.Pattern.compile(regex9.getText().toString()), Color.parseColor(quotesColor));

ColorScheme keywords6 = new ColorScheme(java.util.regex.Pattern.compile(regex10.getText().toString()), Color.parseColor(commentsColor));

ColorScheme keywords7 = new ColorScheme(java.util.regex.Pattern.compile(regex8.getText().toString()), Color.parseColor(numbersColor));


ColorScheme keywords8 = new ColorScheme(java.util.regex.Pattern.compile(regex11.getText().toString()), Color.parseColor(charColor));

final ColorScheme[] schemes = {keywords1, keywords2, keywords3, keywords4, keywords5, keywords6, keywords7, keywords8}; @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { removeSpans(s, android.text.style.ForegroundColorSpan.class); for(ColorScheme scheme : schemes) { for(java.util.regex.Matcher m = scheme.pattern.matcher(s);

m.find();) { if (scheme == keywords4) { s.setSpan(new android.text.style.ForegroundColorSpan(scheme.color), m.start(), m.end()-1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
else { s.setSpan(new android.text.style.ForegroundColorSpan(scheme.color), m.start(), m.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); } } } } void removeSpans(Editable e, Class type) { android.text.style.CharacterStyle[] spans = e.getSpans(0, e.length(), type); for (android.text.style.CharacterStyle span : spans) { e.removeSpan(span); } } class ColorScheme { final java.util.regex.Pattern pattern; final int color; ColorScheme(java.util.regex.Pattern pattern, int color) { this.pattern = pattern; this.color = color; } } });

// End

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