Android 从url在文本中滚动查看

所以我尝试在我的应用程序中显示这个氏族花名册，并在活动中使用此代码

        /* 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); 
    }
}

但是我如何启用滚动，因为它没有使用我制作的布局：花名册.xml？

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那么，如何使其工作，以便滚动到列表中更靠下的名称呢？

您可以将滚动视图视为

    ScrollView sv = new ScrollView(this);

然后将文本视图添加到此滚动视图

    sv.addView(tv);

然后将此scrollview设置为ContentView

    this.setContentView(sv);

将您的代码如下所示：

//     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); 
    }
}

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你能帮我改一下密码吗？我真的搞不懂如何使用你发布的代码：有没有办法设置背景色？我在你的代码中添加了滚动视图；然后将textview添加到scrollview并将该scrollview设置为contentview。只要试试这个代码，我想它大部分都能用。请告诉我把代码放在哪里，我不明白。你能设置一个bgcolor吗？告诉我你把你的TextView tv=new TextView这个；我已经编辑了我的旧答案并编写了正确的代码，请将该代码在您的系统中进行检查