ccui.EditBox ios 横版 点击就黑屏

        local redeemEditBoxBg = ccui.Scale9Sprite:create("commonpics/kong.png")
        redeemEditBoxBg:setVisible(false)
        self.redeemEditBox = ccui.EditBox:create(cc.size(100,50), redeemEditBoxBg)
        self.redeemEditBox:setPosition(cc.p(0,0))
        self.redeemEditBox:setInputMode(6)
        self.redeemEditBox:setInputFlag(4)
        self.redeemEditBox:setReturnType(1)
        self.redeemEditBox:setMaxLength(20)
        self.redeemEditBox:setPlaceHolder("Please Type Friend's Name Here")
        self.redeemEditBox:setPlaceholderFontColor(cc.c3b(247, 182, 110))
        self.redeemEditBox:setFontColor(cc.c3b(247, 182, 110))
        parent:addChild(self.redeemEditBox)

好神奇,android就没有这个问题