如何使用Android应用程序将数据发送到网站 [英] How send data to website by using android app

问题描述

我正在尝试向我的网站发送一些数据.点击按钮时，需要向网站发送数据

I'm trying to send some data to my website. When the button is clicked, data need to be sent to the web site

但是我在运行程序时遇到了一些错误

but I got some errors when I am running the program

当我点击按钮时，这条消息出现不幸的是应用程序已停止"然后它退出我的应用程序.

when I clicked the button this message appears "unfortunately app has stopped" then it exit my application.

 public class testInput extends Activity {

Button Setbutton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);


    setContentView(R.layout.test_input_page);

    Setbutton=(Button)findViewById(R.id.setbtn);

Setbutton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
        testInput ti=new testInput();
            //Create the intent



           ti.postData("Sent Data");


    });

}

public void postData(String toPost) {
    // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://mysite.com/index.php");

    //This is the data to send
    String MyName = toPost; //any data to send

    try {
    // Add your data
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
    nameValuePairs.add(new BasicNameValuePair("action", MyName));

    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

    // Execute HTTP Post Request

    ResponseHandler<String> responseHandler = new BasicResponseHandler();
    String response = httpclient.execute(httppost, responseHandler);

    //This is the response from a php application
    String reverseString = response;
    Toast.makeText(this, "response" + reverseString, Toast.LENGTH_LONG).show();

    } catch (ClientProtocolException e) {
    Toast.makeText(this, "CPE response " + e.toString(), Toast.LENGTH_LONG).show();
    // TODO Auto-generated catch block
    } catch (IOException e) {
    Toast.makeText(this, "IOE response " + e.toString(), Toast.LENGTH_LONG).show();
    // TODO Auto-generated catch block
    }

    }//end postData()

这是我的 PHP 代码.

This is my PHP code.

<?php

//code to reverse the string

$reversed = strrev($_POST["action"]);

echo $reversed;

?>

我也获得了在我的应用中使用互联网的许可.

I got permission also for use internet in my app.

推荐答案

从 Android 3.x 开始，你不能在主线程中执行网络操作.您需要使用 AsyncTask 或单独的线程来调用 postData 方法.

Since Android 3.x you can't perform network operations in main thread. You need to use AsyncTask or separate thread where you can call your postData method.

http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

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