加載屏幕後運行圖庫完成加載

Question

我目前是Android的新手。我看到很多情況下，加載屏幕能夠啓動文件的下載。我想知道在加載屏幕完成處理其後臺任務時，我如何才能在postexecute（）命令上啓動畫廊。 以下是後臺任務中的代碼。我是否想在這個背景下編寫代碼，讓圖庫在postexecute（）上執行，或者還有其他辦法可以做到這一點。

P.S我的載入畫面和畫廊在不同的java文件。那麼有什麼辦法可以讓畫廊在postexecute命令的加載屏幕後立即運行？

感謝

//The code to be executed in a background thread. 
      @Override 
      protected String doInBackground(String... strings) 
      { 
       /* This is just a code that delays the thread execution 4 times, 
       * during 850 milliseconds and updates the current progress. This 
       * is where the code that is going to be executed on a background 
       * thread must be placed. 
       */ 
       try 
       { 
        //Get the current thread's token 
        synchronized (this) 
        { 
         //Initialize an integer (that will act as a counter) to zero 
         int counter = 0; 
         //While the counter is smaller than four 
         while(counter <= 4) 
         { 
          //Wait 850 milliseconds 
          this.wait(850); 
          //Increment the counter 
          counter++; 
          //Set the current progress. 
          //This value is going to be passed to the onProgressUpdate() method. 
          publishProgress(counter*25); 
         } 
        } 
       } 
       catch (InterruptedException e) 
       { 
        e.printStackTrace(); 
       } 
       return null; 
      } 

      //Update the TextView and the progress at progress bar 
      @Override 
      protected void onProgressUpdate(Integer... values) 
      { 
       //Update the progress at the UI if progress value is smaller than 100 
       if(values[0] <= 100) 
       { 
        tv_progress.setText("Progress: " + Integer.toString(values[0]) + "%"); 
        pb_progressBar.setProgress(values[0]); 
       } 
      } 

Answer 1

當然可以。只需從PostExecute啓動畫廊。

@Override 
     protected void onPostExecute(Void...values) 
     { 
      //get image path 
      File file = <imageFilepath>; 
      //add to intent 
     Intent intent = new Intent(Intent.ACTION_VIEW); 
      //start activity 
     intent.setDataAndType(Uri.fromFile(file),"image/*"); 
      startActivity(intent); 
     }