Question

我已经实现了一个函数，我添加了一个带有一些按钮的视图以及添加了Eventlistener。

使用按钮侦听器我转换到另一个视图并删除了最后一个视图但仍然按钮侦听器处于活动状态。

 function loadingMenu()

     playBtn = display.newImage('play-btn.png', 170, 130)
    playBtn:addEventListener( "tap", listener )

    instructionBtn = display.newImage('instructions-btn.png', 150, 164)
   -- instructionBtn:addEventListener( "tap", instructionListener )

     creditBtn = display.newImage('credits-btn.png', 180, 201)
    --creditBtn:addEventListener( "tap",ceditsListener )

    titleBg = display.newImage('background-with-title.png')

   --titleView = display:newGroup()
     titleView = display.newGroup(titleBg, playBtn, instructionBtn,creditBtn)

end


function listener(event) 
      if titleView ~= nil then 
        playBtn:removeEventListener( "tap", listener ) 
        transition.to(titleView, {time = 300, y = -titleView.width, onComplete = function() --startButtonListeners('rmv') --titleView:removeSelf() display.remove(titleView) titleView = nil end}) 

       end 
       return true 
end

提前致谢

Answer 1

试试这个。这将有效...

    ----------------------------------------------------------------------------
    local playBtn,instructionBtn,creditBtn,titleBg,titleView
    ----------------------------------------------------------------------------
    function newfunction()
      print("inside newfunction...")
    end
    ----------------------------------------------------------------------------
    function listener()
       print("inside listener...")
       if titleView ~= nil then 
               playBtn:removeEventListener( "tap", listener ) 
               transition.to(titleView, {time = 300, y = -titleView.width, onComplete = newfunction()}) --startButtonListeners('rmv') --titleView:removeSelf() display.remove(titleView) titleView = nil end}) 
       end 
       return true 
    end
   ----------------------------------------------------------------------------
   function loadingMenu()
      playBtn = display.newImage("play-btn.png", 170, 130)
      instructionBtn = display.newImage("instructions-btn.png", 150, 164)
      creditBtn = display.newImage("credits-btn.png", 180, 201)
      titleBg = display.newImage("background-with-title.png")
      titleView = display.newGroup(titleBg, playBtn, instructionBtn,creditBtn)

      playBtn:addEventListener( "tap", listener )
   end
  ----------------------------------------------------------------------------
  loadingMenu()
  ----------------------------------------------------------------------------

删除父视图后，RemoveEventListener无法正常工作

1 个答案: