EditText将光标移至文字末尾

edittext.addTextChangedListener(new TextWatcher() {    @Override    public void afterTextChanged(Editable arg0) {        edittext.setSelection(arg0.length());//将光标移至文字末尾    }    @Override    public void beforeTextChanged(CharSequence cs, int arg1,                                  int arg2, int arg3) {    }    @Override    public void onTextChanged(CharSequence cs, int arg1, int arg2,                              int arg3) {     }});