First letter capitalization for EditText

Statically (i.e. in your layout XML file): set android:inputType="textCapSentences" on your EditText.

Programmatically: you have to include InputType.TYPE_CLASS_TEXT in the InputType of the EditText, e.g.

EditText editor = new EditText(this); 
editor.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES);

Can be combined with text and its variations to request capitalization of the first character of every sentence.

– Google Docs

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