android EditText问题? 400 报错

android EditText问题? 400 报错

红色区域怎么理解；又是什么作用；为什么又创建一个new UserInfo(); 

public void onClick(View v) {

int id = v.getId();
       if (id == R.id.goorder) {
            if(!"".equals(name.getText().toString())&&!"".equals(address.getText().toString())&&!"".equalsIgnoreCase(phone.getText().toString())){
new Thread(){
public void run(){
String uri=Constants.uri+"saveOrder";

UserInfo userInfo=new UserInfo();
userInfo.setUsername(name.getText().toString());
userInfo.setAddress(address.getText().toString());
userInfo.setTelphone(phone.getText().toString());

int i=SendServer.getInstance().sendToServer(userInfo,goodslist, uri);//个人信息--商品信息发过去
if(i==1){
mHandler.sendEmptyMessage(2);//表示传到服务器保存后回传的
}else if(i==0){
mHandler.sendEmptyMessage(0);//表示服务器端保存出错提示网络异常重新提交
}
}

}.start();

```````````

public class UserInfo {
private String username;
private String address;
private String telphone;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTelphone() {
return telphone;
}
public void setTelphone(String telphone) {
this.telphone = telphone;
}
}