我可以在哪裏學習在android中創建http請求？

Question

我想我的Android應用程序進行以下/共享請求（POST）。 https://www.dropbox.com/developers/reference/api#shares

但我以前沒有做過任何HTTP請求，不知道如何。

我的應用已經與Dropbox的認證。

有人可以提供樣品嗎？

ps.i知道在java中http.But不是它的實際用途

Answer 1

我的建議是使用諸如循環J庫的理論。它將處理你不想實施的事情，如「請求重試」。它帶有簡單的例子，已經在這個頁面上。

http://loopj.com/android-async-http/

Answer 2

HTTP請求在Android中，它只是一個示例代碼實現這種方式，你嘗試了很多相關的東西。

實用指南：http://developer.android.com/reference/org/apache/http/client/HttpClient.html

 HttpClient httpclient = new DefaultHttpClient(); 
     HttpPost httpPost = new HttpPost(YOUR_URL); 
     HttpResponse response; 
     try { 
      response = httpclient.execute(httpPost); // the request executes 
      Log.d("HTTP","Executed"); 
    String responseBody = EntityUtils.toString(response.getEntity()); 

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

希望這有助於

Answer 3

您使用下面的示例。

這個例子中HTTP Web服務

public class Httprequest_responseActivity extends Activity { 
ProgressDialog progressdialog; 
TextView txt; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    txt=(TextView)findViewById(R.id.txt); 
    httprequest("http://api.bilubi.com/BBService.svc/Compleateprogress"); 
} 
String urlstr; 
public void httprequest(String url) 
{ 
    urlstr=url; 
    progressdialog=ProgressDialog.show(Httprequest_responseActivity.this, "", "Loadding........",true); 
    new Thread(new Runnable() { 

     @Override 
     public void run() { 
      BufferedReader in=null; 

      Message msg=Message.obtain(); 
      msg.what=1; 
      try 
      { 
       HttpClient client=new DefaultHttpClient(); 
       HttpGet request=new HttpGet(); 
       request.setURI(new URI(urlstr)); 
       HttpResponse response=client.execute(request); 
       in=new BufferedReader(new InputStreamReader(response.getEntity().getContent())); 
       StringBuffer sb=new StringBuffer(""); 
       String line=""; 
       while((line=in.readLine())!=null) 
        sb.append(line); 
       Bundle b=new Bundle(); 
       b.putString("data", sb.toString()); 
       msg.setData(b); 
       in.close(); 

      } 
      catch(Exception e) 
      { 
       System.out.println("****************"+e.getMessage()); 
       //txt.setText(""+e.getMessage()); 
      } 

      handler.sendMessage(msg); 
     } 
    }).start(); 
} 

Handler handler=new Handler() 
{ 
    public void handleMessage(Message msg) 
    { 
     super.handleMessage(msg); 
     switch(msg.what) 
     { 
     case 1: 

      txt.setText(msg.getData().getString("data")); 
      break; 
     } 
     progressdialog.dismiss(); 
    } 
}; 

}

Answer 4

使用HttpURLConnection類用於讀取JSON字符串，而不是HttpClient的的，所推薦的Android開發者在這裏： http://android-developers.blogspot.in/2011/09/androids-http-clients.html

這裏是樣品：

URL url = new URL("www.yandex.ru"); 
HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
InputStream in = new BufferedInputStream(connection.getInputStream()); 
String response = new Scanner(in).useDelimiter("\\A").next();