What type is passed as src charsequence/string or other in InputFilter?

Question

I'm developing android application. My sdk details are minimum sdk version is 7 and target and buid sdk version is 10

In my app in one screen I'm using "EditText" and I'm using filter for that editText
The following are my coding snippet

editText.setFilters
        (
                new InputFilter[] 
                {
                        new InputFilter() 
                        {
                            public CharSequence filter(CharSequence src, int start,int end, Spanned dst, int dstart, int dend) 
                            {

                                String name=src.getClass().getName();
                                System.out.println("\n\tSrc class name ="+name);

                                String tempStr=((String)src).toUpperCase();



                                return tempStr;
                            }                           
                        }
                }
        );

In the above code sometimes src be the String,sometimes it be CharSequence,sometimes it be " android.text.SpannableStringBuilder"

My doubt is at what scenarios charsequence is passed ,String is passed ,android.text.SpannableStringBuilder is passed as src?

Answer 1

It depends on CharSequence you used when calling TextView.setText(CharSequence text)