使用HTTP post方法将数据从android应用程序发送到PHP页面

Question

我是android开发新手。我正在尝试一个基本的应用程序。我的要求是我需要将数据从android应用程序中的文本框发送到使用POST方法在网络上托管的PHP页面。我已经浏览了很多网站的这个方法的教程，但没有找到一个正确的。任何人都可以请我提供一个示例代码，使用post方法将数据从android应用中的一个文本框发送到PHP页面？先谢谢你。

Answer 1

事情是这样的：

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    final EditText input = (EditText)findViewById(R.id.yourinput); 
    input.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      String text = input.getText().toString(); 
      new UploadTask().execute(text); 
     } 
    }); 
} 

private class UploadTask extends AsyncTask<String, Integer, String> { 

    private ProgressDialog progressDialog; 
    @Override 
    protected void onPreExecute() { 
     progressDialog = new ProgressDialog(MainActivity.this); 
     progressDialog.setMessage("Uploading..."); 
     progressDialog.setCancelable(false); 
     progressDialog.setIndeterminate(true); 
     progressDialog.show(); 
     super.onPreExecute(); 
    } 

    @Override 
    protected String doInBackground(String... params) { 
     HttpClient httpclient = new DefaultHttpClient(); 
     HttpPost httppost = new HttpPost(
       "http://yourwebsite.com/commit.php"); 

     try { 
      // Add your data 
      List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); 
      nameValuePairs 
        .add(new BasicNameValuePair("username", params[0])); 

      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 

      // Execute HTTP Post Request 
      HttpResponse response = httpclient.execute(httppost); 
      if (response != null) { 
       InputStream in = response.getEntity().getContent(); 
       String responseContent = inputStreamToString(in); 

       return responseContent; 
      } 
     } catch (ClientProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(String result) { 
     if (progressDialog != null) { 
      progressDialog.dismiss(); 
     } 
     // process the result 
     super.onPostExecute(result); 
    } 

    private String inputStreamToString(InputStream is) throws IOException { 
     String line = ""; 
     StringBuilder total = new StringBuilder(); 

     // Wrap a BufferedReader around the InputStream 
     BufferedReader rd = new BufferedReader(new InputStreamReader(is)); 

     // Read response until the end 
     while ((line = rd.readLine()) != null) { 
      total.append(line); 
     } 

     // Return full string 
     return total.toString(); 
    } 
}