//点击发送按钮后发送用户输入的内容        //1、获取用户输入的内容        EditText et_phone = (EditText) findViewById(R.id.et_phone);        EditText et_content = (EditText) findViewById(R.id.et_content);        String phone = et_phone.getText().toString();        String ms = et_content.getText().toString();        //拿到发送短信的api        SmsManager sm = SmsManager.getDefault();        ArrayList<String> mss = sm.divideMessage(ms);        for(String msg : mss){            sm.sendTextMessage(phone, null, msg, null, null);        }