滾動型文本從URL

Question

，所以我想顯示在我的應用程序這支戰隊陣容與此代碼在活動

 /* We will show the data we read in a TextView. */ 
     TextView tv = new TextView(this); 

     /* Will be filled and displayed later. */ 
     String myString = null; 
     try { 
      /* Define the URL we want to load data from. */ 
      //http://androidtest.host.org/roster.txt 
      URL myURL = new URL( 
         "http://androidtest.host.org/roster.txt"); 
      /* Open a connection to that URL. */ 
      URLConnection ucon = myURL.openConnection(); 

      /* Define InputStreams to read 
       * from the URLConnection. */ 
      InputStream is = ucon.getInputStream(); 
      BufferedInputStream bis = new BufferedInputStream(is); 

      /* Read bytes to the Buffer until 
       * there is nothing more to read(-1). */ 
      ByteArrayBuffer baf = new ByteArrayBuffer(50); 
      int current = 0; 
      while((current = bis.read()) != -1){ 
        baf.append((byte)current); 
      } 

      /* Convert the Bytes read to a String. */ 
      myString = new String(baf.toByteArray()); 
     } catch (Exception e) { 
      /* On any Error we want to display it. */ 
      myString = e.getMessage(); 
     } 
     /* Show the String on the GUI. */ 
     tv.setText(myString); 
     this.setContentView(tv); 
    } 
} 

但是如何啓用，因爲它不是用我所做的佈局滾動：名冊.XML？ 那麼，我如何得到它的工作，以便我可以滾動到名單上更進一步的名單？

Answer 1

你可以採取滾動視圖作爲

ScrollView sv = new ScrollView(this); 

那麼你的TextView添加到此滾動型

sv.addView(tv); 

然後設置這個滾動視圖爲內容查看像

this.setContentView(sv); 

把你的代碼如下：

//  take here a scrollview /////////////////////////////////////// 
    ScrollView sv = new ScrollView(this); 

    /* We will show the data we read in a TextView. */ 
    TextView tv = new TextView(this); 

    /* Will be filled and displayed later. */ 
    String myString = null; 
    try { 
     /* Define the URL we want to load data from. */ 
     //http://androidtest.host.org/roster.txt 
     URL myURL = new URL( 
        "http://androidtest.host.org/roster.txt"); 
     /* Open a connection to that URL. */ 
     URLConnection ucon = myURL.openConnection(); 

     /* Define InputStreams to read 
      * from the URLConnection. */ 
     InputStream is = ucon.getInputStream(); 
     BufferedInputStream bis = new BufferedInputStream(is); 

     /* Read bytes to the Buffer until 
      * there is nothing more to read(-1). */ 
     ByteArrayBuffer baf = new ByteArrayBuffer(50); 
     int current = 0; 
     while((current = bis.read()) != -1){ 
       baf.append((byte)current); 
     } 

     /* Convert the Bytes read to a String. */ 
     myString = new String(baf.toByteArray()); 
    } catch (Exception e) { 
     /* On any Error we want to display it. */ 
     myString = e.getMessage(); 
    } 
    /* Show the String on the GUI. */ 
    tv.setText(myString); 
// add your textview to scrollview ///////////////////////////////////// 
     sv.addView(tv); 

// NOW set scrollview as your contentview ///////////////////////////// 
     this.setContentView(sv); 
    } 
}