ios - Corona SDK 应用程序异常退出，信号为 10 : Bus Error: 10. 设备崩溃

Question

我有一个应用程序在 Corona 模拟器中运行良好，但在设备本身上崩溃，并且它在 iOS 设备控制台中返回以下错误:

Mar 20 22:56:26 tmacs-iPhone backboardd[28] <Warning>: Application 'UIKitApplication:HappyShaker[0x9cf9]' exited abnormally with signal 10: Bus error: 10
Mar 20 22:56:26 tmacs-iPhone backboardd[28] <Warning>: BKSendGSEvent ERROR sending event type 23: (ipc/send) invalid destination port (0x10000003)

根据我的研究，我发现这个错误是由这两个问题引起的:

1. Accessing memory that doesn't exist
2. Accessing memory that isn't aligned on a 4 or 8 byte boundary

根据 Corona 的运作方式，这很可能是第一个原因。

在调试过程中，我发现了一些可以缩小问题搜索范围的东西。

下面所述的代码会导致应用程序崩溃。这是一个启动物理、设置其比例、添加物理对象、启动计时器以及在按下按钮后移除按钮的按钮。它有点初始化物理。

local playButton = nil
local function handleButtonEvent( event )
    if "ended" == event.phase then
        physics.start()
        physics.setScale(60)
        physics.addBody( red, "dynamic",redBody )
        physics.addBody( borderTop, "static", borderBodyElement )
        physics.addBody( borderBottom, "static", borderBodyElement )
        physics.addBody( borderLeft, "static", borderBodyElement )
        physics.addBody( borderRight, "static", borderBodyElement )
        timer.performWithDelay(1000, fn_counter, number)
        playButton:removeSelf()
        playButton = nil
    end
    return true
end
playButton = widget.newButton {
    left = _W/2-53,
    top = 400,
    width = 105,
    height = 39,
    defaultFile = "start.png",
    overFile = "start_pressed.png",
    label = "",
    onEvent = handleButtonEvent,
}
playButton.isActive = true
group:insert(playButton)

当我注释掉代码的按钮小部件部分时，它工作正常并且不会崩溃。被注释掉的部分在下面的代码中说明。

    -- local playButton = nil
 --     local function handleButtonEvent( event )
    --  if "ended" == event.phase then
            physics.start()
            physics.setScale(60)
            physics.addBody( red, "dynamic",redBody )
            physics.addBody( borderTop, "static", borderBodyElement )
            physics.addBody( borderBottom, "static", borderBodyElement )
            physics.addBody( borderLeft, "static", borderBodyElement )
            physics.addBody( borderRight, "static", borderBodyElement )
            timer.performWithDelay(1000, fn_counter, number)
    --      playButton:removeSelf()
    --      playButton = nil
    --  end
    --  return true
    -- end
    -- playButton = widget.newButton {
    --  left = _W/2-53,
    --  top = 400,
    --  width = 105,
    --  height = 39,
    --  defaultFile = "start.png",
    --  overFile = "start_pressed.png",
    --  label = "",
    --  onEvent = handleButtonEvent,
    -- }
    -- playButton.isActive = true
    -- group:insert(playButton) 

以前有人在使用按钮小部件时遇到过这个问题吗？

我还应该提到这段代码位于 Storyboard的 createScene() 函数中。

Answer 1

我找到了解决方案。它与 physics.start() 在监听器函数内部有关。我做了以下调整:

physics.start()
physics.setScale( 60 )
physics.addBody( borderTop, "static", borderBodyElement )
physics.addBody( borderBottom, "static", borderBodyElement )
physics.addBody( borderLeft, "static", borderBodyElement )
physics.addBody( borderRight, "static", borderBodyElement )

-- local startButton = nil
local function handleButtonEvent( event )
    if "ended" == event.phase then

        physics.addBody( red, "dynamic",redBody )
        timer.performWithDelay(1000, fn_counter, number)
        startButton:removeSelf()
        startButton = nil
    end
    return true
end

通过将 physics.start() 函数放置在监听器事件函数之外使其工作。但是，我仍然对为什么这会导致段错误感到困惑。谁能给我解释一下？