Question

如何从服务器读取txt文件内容并在android中使用？ Android新手！这是我的代码。

    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();
                }
            });
        }
    }

这里urlStream =从url读取的文本。检查解决方案无处不在，但无法修复它。这是一个m3u8播放器Android应用程序。 m3u8 url保存在服务器的txt文件中，应用程序应该从txt文件中读取url并将其附加到app中的urlStream。

Answer 1

找到解决方案

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();
}

然后将文本int放到TextView

t.setText(getTextFromUrl());

如何从URL读取txt文件并用作字符串？

1 个答案: