How to "cap" the first character on the keyboard key if the text is displayed via onText?

Question

Android

if (isCaps)
 getCurrentInputConnection().commitText(text.toString().toUpperCase(), 1);

this code in the onText method converts the input text to uppercase, but the problem is that if there is more than one character on the key, then you need to make sure that only the first character is "capsulated". I tried a lot of tricks but in the end nothing. text with type CharSequence