public boolean isNum(String str) { for (int i = 0; i < checkedPersons.size(); i++) { String phone = checkedPersons.get(i).phone; if (!PublicMethod.isphonenum(phone)) { Toast.makeText(this, "您输入的手机号" + phone + "是错误的,请重新输入!", Toast.LENGTH_SHORT).show(); return false; } } return true; }