android - WCF With Android- 绑定(bind)结果与标签或 ListView

Question

1. 我创建了一个带有 2 个参数用户名和密码的 WCF。
2. 我创建了一个 android 用户界面，它接受输入的用户名和密码，并且在按钮单击事件中它的用户名和密码存在我已经为标签分配了一个静态值“登录成功”。

我需要指导如何将结果集与标签绑定(bind)，而不是将静态值传递给标签。

公共(public)类 JSONSampleAppActivity 扩展 Activity 实现 OnClickListener{ /** 在第一次创建 Activity 时调用。 */

//Property declaration
Button btnLogin;
TextView lblStatus;
EditText txtUserName,txtPassword;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    btnLogin=(Button)findViewById(R.id.btnLogin);
    btnLogin.setOnClickListener(this);

    lblStatus=(TextView)findViewById(R.id.lblStatus);

    txtUserName=(EditText)findViewById(R.id.txtUserName);
    txtPassword=(EditText)findViewById(R.id.txtPassword);
}

@Override
public void onClick(View v) {

    switch(v.getId())
    {
        case R.id.btnLogin:
            String userName=txtUserName.getText().toString();
            String password=txtPassword.getText().toString();
            if(verifyLogin(userName,password))
            {

                lblStatus.setText("Login Successfully");
            }
            else
            {
                lblStatus.setText("Login Failed");
            }
            break;
    }
}

public static String convertStreamToString(InputStream is) 
{
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb = new StringBuilder();

    String line = null;
    try {
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
    } 
    catch (IOException e) {
        e.printStackTrace();
    } 
    finally {
        try {
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return sb.toString();
}

public static boolean verifyLogin(String UserName,String Password)
{
    try
    {
        System.out.println("guru");
        DefaultHttpClient httpClient=new DefaultHttpClient();

        //Connect to the server
        HttpGet httpGet=new HttpGet("http://xxxx/Service1.svc/checkLogin?name="+UserName+"&pass="+Password);
        //Get the response
        HttpResponse httpResponse = httpClient.execute(httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        InputStream stream=httpEntity.getContent();

        //Convert the stream to readable format
        String result= convertStreamToString(stream);

        if(result.charAt(1)=='1')
        {

            return true;
        }
        else
        {
            return false;
        }
    }
    catch(Exception e)
    {
        return false;
    }

}

Answer 1

To get the result set in label your code should look like this :

public static String verifyLogin(String UserName,String Password)
{
    try
    {
        System.out.println("guru");
        DefaultHttpClient httpClient=new DefaultHttpClient();

        //Connect to the server
        HttpGet httpGet=new HttpGet("http://xxxx/Service1.svc/checkLogin?name="+UserName+"&pass="+Password);
        //Get the response
        HttpResponse httpResponse = httpClient.execute(httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        InputStream stream=httpEntity.getContent();

        //Convert the stream to readable format
        String result= convertStreamToString(stream);



    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
    return result;
}

call above method like this in onclick:

            String userName=txtUserName.getText().toString();
            String password=txtPassword.getText().toString();
            String res=verifyLogin(userName,password)
            lblStatus.setText(res);

whatever result is will be displayed in textview.