Question

我想在同一视频中播放很多视频点击按钮时，在其他布局中以videoview播放在线视频例如：

“布局1”中有三个按钮点击任何按钮后转到“布局2” “布局2”中有一个VideoView 每个人的动作点击按钮是在VideoView中更改字符串值“VideoURl”

问题是：如何更改布局2中String变量的值当您单击布局1中的任何按钮时？!!] 1

http://i.stack.imgur.com/ytQiE.jpg

public class MainActivity extends Activity{
Button button1;


public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    addListenerOnButton();
}
     public void addListenerOnButton() {
          final Context context = this;

            button1 = (Button) findViewById(R.id.button1);


            button1.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View arg0) {

                    Intent i = new Intent(context, Main2Activity.class);
                    i.putExtra("VidURL1", "http://img580.imageshack.us/img580/416/4dojlrwiknaexgxaiyqfbz.mp4");

                                startActivity(i);   

                }

            });


    }

  }

守则活动2：

public class Main2Activity extends Activity {

private ProgressDialog pDialog;

VideoView videoview;

@Override

protected void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);

   setContentView(R.layout.activity_main);

   videoview = (VideoView) findViewById(R.id.VideoView);

   new StreamVideo().execute();


   }


   private class StreamVideo extends AsyncTask {

   @Override
   protected void onPreExecute() {

       super.onPreExecute();
       pDialog = new ProgressDialog(Main2Activity.this);
       pDialog.setTitle("Android Video Streaming Tutorial");
       pDialog.setMessage("Buffering...");
       pDialog.setIndeterminate(false);
       pDialog.show();

   }

   @Override
   protected Void doInBackground(Void... params) {
       // TODO Auto-generated method stub
       return null;
   }

   @Override
   protected void onPostExecute(Void args) {

       try {
           // Start the MediaController
           MediaController mediacontroller = new MediaController(
                   Main2Activity.this);
           mediacontroller.setAnchorView(videoview);
           // Get the URL from String VideoURL
           Uri video = Uri.parse(VideoURL);
           videoview.setMediaController(mediacontroller);
           videoview.setVideoURI(video);

           videoview.requestFocus();
           videoview.setOnPreparedListener(new OnPreparedListener() {
               // Close the progress bar and play the video
               public void onPrepared(MediaPlayer mp) {
                   pDialog.dismiss();
                   videoview.start();
               }
           });
       } catch (Exception e) {
           pDialog.dismiss();
           Log.e("Error", e.getMessage());
           e.printStackTrace();
       }

   }

   }

   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
   getMenuInflater().inflate(R.menu.main, menu);
   return true;
   }

}

Answer 1

您可以使用意图

在两个活动之间传递数据

Intent intent = new Intent(getBaseContext(), SignoutActivity.class);
intent.putExtra("EXTRA_SESSION_ID", sessionId);

startActivity(intent)

并从activity1获取数据

String Url = getIntent().getExtras().getString("yourKey");

如何在单击Button后更改Videoview URL的String变量的值？

1 个答案: