如何在Android中處理太多Activites？

Question

我使用VideoView在我的應用中播放視頻，因此我需要爲每個視頻創建大量活動。我的問題是，無論如何要處理這個問題？因爲到目前爲止我已經創建了100多個活動。由於活動太多，我不希望我的應用變得太大。

Answer 1

@Leon您可以使用視圖的鰭狀肢

這可能幫助你

http://www.bogotobogo.com/Android/android9TabWidgetFlipper.html#SlidingDrawer

http://www.warriorpoint.com/blog/2009/05/29/android-switching-screens-by-dragging-over-the-touch-screen/

Answer 2

好，坦白地說，大多數開發商不得不做的功能和低之間的雜耍行爲內存佔用。考慮到各種活動狀態，最好的實施工作已經完成。讀起來吧here

這是最好的，你可以從你身邊做。當其他活動應用需要資源時，Android將始終「殺死」在後臺運行的活動。

Answer 3

這裏是在單個活動中導航下一個/上一個視頻的代碼。像播放列表。

public class Test11Activity extends Activity { 
private int currentVideo=0; 
ArrayList<String> httpLinkArrayList = new ArrayList<String>(); 
VideoView videoView; 
Button n_button; 
Button p_button; 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    httpLinkArrayList.add("http://abb.mp4"); 
    httpLinkArrayList.add("http://abb1.mp4"); 
    httpLinkArrayList.add("http://abb2.mp4"); 
    httpLinkArrayList.add("http://abb3.mp4"); 
    httpLinkArrayList.add("http://abb4.mp4"); 


    LinearLayout mainlayout = new LinearLayout(this); 

mainlayout.setOrientation（LinearLayout.VERTICAL）; LinearLayout n_p_layout = new LinearLayout（this）;

n_button = new Button(this); 
    n_button.setText("Next"); 
    n_button.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub    
      if(currentVideo<httpLinkArrayList.size()){ 
       currentVideo++; 
       videoView.setVideoURI(Uri.parse(httpLinkArrayList.get(currentVideo))); 
       videoView.start(); 
      } 
     } 
    }); 
    p_button = new Button(this); 
    p_button.setText("Previous"); 
    p_button.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub    
      if(currentVideo>0){ 
       currentVideo--; 
       videoView.setVideoURI(Uri.parse(httpLinkArrayList.get(currentVideo))); 
       videoView.start(); 
      } 
     } 
    }); 
    n_p_layout.addView(n_button); 
    n_p_layout.addView(p_button);   

    videoView = new VideoView(this); 
    videoView.setVideoURI(Uri.parse(httpLinkArrayList.get(currentVideo))); 
    videoView.start(); 
    videoView.setOnCompletionListener(new OnCompletionListener() { 

     @Override 
     public void onCompletion(MediaPlayer arg0) { 
      // TODO Auto-generated method stub    
      if(currentVideo<httpLinkArrayList.size()){ 
            currentVideo++; 
       videoView.setVideoURI(Uri.parse(httpLinkArrayList.get(currentVideo))); 
       videoView.start(); 
      } 
     } 
    }); 

    mainlayout.addView(n_p_layout); 
    mainlayout.addView(videoView); 

    setContentView(mainlayout); 
} 

}

希望對你有用。:)