如何從URL中讀取txt文件並將其用作字符串？

Question

如何從服務器讀取txt文件內容並在android中使用它？新的android！ 這是我的代碼。

import android.app.Activity; 
    import android.net.Uri; 
    import android.os.Bundle; 
    import android.widget.MediaController; 
    import android.widget.VideoView; 
    /** 
    * Created by Mukesh on 4/23/2017. 
    */ 

    public class PlayerActivity extends Activity { 
     private String urlStream; 
     private VideoView myVideoView; 

     public static void main(String[] args) { 
      try { 
       URL url = new URL("http://www.example.com/file.txt"); 
       InputStream is = url.openStream(); 
       BufferedReader br = new BufferedReader(new InputStreamReader(is)); 

       String line; 
       while ((line = br.readLine()) != null) 
        System.out.println(line); 

       br.close(); 
       is.close(); 

      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    } 
     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_player); 
      myVideoView = (VideoView) this.findViewById(R.id.myVideoView); 
      MediaController mc = new MediaController(this); 
      myVideoView.setMediaController(mc); 


urlStream = ""; //how to keep the text read from txt file from server 


runOnUiThread(new Runnable() { 
       @Override 
       public void run() { 
        myVideoView.setVideoURI(Uri.parse(urlStream)); 
        myVideoView.start(); 
       } 
      }); 
     } 
    } 

此處urlStream =從url中讀取的文本。檢查解決方案無處不在，但無法修復。這是一個M3U8播放器的Android應用程序。 m3u8 url保存在服務器的txt文件中，應用程序應該從txt文件讀取url並將其附加到appStream中的urlStream。

Answer 1

查找解決

private String getTextFromUrl(){ 
    String link="http://.../file.txt"; 
    ArrayList<String> al=new ArrayList<>(); 

    try{ 
     URL url = new URL(link); 
     URLConnection conn = url.openConnection(); 
     conn.setDoOutput(true); 
     conn.connect(); 

     InputStream is = conn.getInputStream(); 
     InputStreamReader isr = new InputStreamReader(is, "UTF-8"); 
     BufferedReader br = new BufferedReader(isr); 
     String line; 

     try { 
      while ((line = br.readLine()) != null) { 
       al.add(line); 
      } 
     } finally { 
      br.close(); 
     } 
    }catch (IOException e){ 
     e.printStackTrace(); 
    } 
    return al.get(0).toString(); 
} 

然後把文本的int TextView的

t.setText(getTextFromUrl());