opupwindowはactivityを開いたときに直接表示されます

 onCreate() popupwindow activity popupwindow ， ：
@Override
	public void onAttachedToWindow() {
		// TODO Auto-generated method stub
		super.onAttachedToWindow();
                // popupwindow 
		showPopupWindow(); 
	
	}

public void showPopupWindow() {
		layout = View.inflate(this, R.layout.widget_main, null);
		popupWindow = new PopupWindow(layout,	LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
		popupWindow.setAnimationStyle(R.style.PopupAnimation);
		//  back 
		ColorDrawable dw = new ColorDrawable(-00000);
		popupWindow.setBackgroundDrawable(dw);
		View view = findViewById(R.id.layout_main);
		popupWindow.showAtLocation(view,	Gravity.CENTER | Gravity.CENTER, 0, 0);
		popupWindow.update();
	}

private Handler mHandler = new Handler();  
  
@Override  
protected void onCreate(Bundle savedInstanceState) {  
    // TODO Auto-generated method stub  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.main);  
    mHandler.postDelayed(mRunnable, 500);  
}  
      
private Runnable mRunnable = new Runnable() {  
    public void run() {  
    //  PopupWindow   
    }  
};