DUCK，Fearless！

boolean bool = true;

ViewTreeObserver vto = button.getViewTreeObserver();

         vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

              @Override

              publicvoid onGlobalLayout() {

                  if(bool){

                  ViewGroup.LayoutParams params = view.getLayoutParams();

                  params.height = viewHeight - button.getHeight()

                           - button1.getHeight();

                  view.setLayoutParams(params);

                                  bool = false;

                   }

              }

         });

// 會造成工作管理CPU暴衝 所以要多加判斷bool 才不會一直呼叫 導致無窮