how to change text color without changing the the whole textview color

Question

I am trying to change the text color by simply clicking the button but when I click the button it changes the previously typed text color also. Means changes the whole text color. When I try to change color through Spannable then it changes the color of the selected part of the text but not for the text which I am going to type next. Is there a way where I can click the button and it does not change the whole text color but the color for which I type next. Thanks

here is what I know only

redtxt.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View view) {
            str.setSpan(new ForegroundColorSpan(Color.parseColor(txtColor)),     selStart, selEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
               text.setTextColor(Color.parseColor("#d32f2f"));
       }
   });

Answer 1

you can use SpannableString for example:

final SpannableString text = new SpannableString("Hello stackOverflow");
text.setSpan(new RelativeSizeSpan(1.5f), text.length() - "stackOverflow".length(), text.length(),
            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new ForegroundColorSpan(Color.RED), 3, text.length() - 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.setText(text);

Answer 2

get your whole text into Spannable like

Spannable text = edittext.getText();

After that just do.

if (edittext.getText().length() != 0){
     text.setSpan(new ForegroundColorSpan(YOUR_COLOR), selection_start, selection_end, 34);
}

Answer 3

You need to implement Spannable String builder(Global Object) and on onChangeText event just append spanned string to Spannable String builder.

    SpannableStringBuilder objSpannableStringBuilder;

edt.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
              final SpannableString text = new SpannableString(s.toString());
              text.setSpan(new ForegroundColorSpan(Color.RED), 3, text.length() - 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);                  objSpannableStringBuilder.append(text);
              your_edit_text.setText(objSpannableStringBuilder);

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });