活动未启动

Question

我可以让进度对话框停止，但TabbedView活动永远不会启动，只会进入黑屏。有任何想法吗？

class DownloadWebPageTask extends AsyncTask<String, Void, String> { 
    private final ProgressDialog dialog = new ProgressDialog(MainScreen.this); 
    @Override 
     protected void onPreExecute() { 
      dialog.setMessage("Gathering data for\n"+selectedSportName+".\nPlease wait..."); 
      dialog.show(); 
     } 


    @Override 
    protected String doInBackground(String... urls) { 
     String response = ""; 
     updateMaps(); 
     return response; 
    } 



    @Override 
    protected void onPostExecute(String result) { 
     dialog.dismiss(); 
     startTabbedViewActivity(); 
    } 
} 


private void startTabbedViewActivity(){ 
    Intent intent = new Intent(this, TabbedView.class); 
    intent.putExtra(SPORT_NAME_EXTRA, selectedSportName); 
    intent.putExtra(HEADLINES_FOR_SPORT_EXTRA,   existingSportHeadlines.get(selectedSportName)); 
    intent.putExtra(SCORES_FOR_SPORT_EXTRA, existingSportScores.get(selectedSportName)); 
    intent.putExtra(SCHEDULE_FOR_SPORT_EXTRA, existingSportSchedule.get(selectedSportName)); 
    startActivity(intent); 
} 

我已经看过了Manifest文件，我没有看到任何奇怪的东西。无法弄清楚这一点。

Answer 1

是活动的布局导向正确

android:orientation="vertical" 

Answer 2

你忘所以根本没有执行它添加@覆盖上面的“onPostExecute”的方法。